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AT25SF128A-SHB-T

128Mbit SPI NOR Flash, 133MHz, Quad I/O, 2.7-3.6V, SOIC-8W, 100K cycles, 20yr retention

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制造商零件：

AT25SF128A-SHB-T

包装：

8-SOIC Wide (0.209 inch / 5.30mm width, 5.0 x 5.3 x 2.16 mm)

品牌：
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说明

产品概览

The AT25SF128A-SHB-T is a 128Mbit (16MB) Serial NOR Flash Memory manufactured by Renesas Electronics (originally developed by Adesto Technologies). It features a Serial Peripheral Interface (SPI) compatible bus supporting standard, dual, and quad I/O modes with clock frequencies up to 133 MHz. Housed in an industry-standard 8-lead wide-body SOIC package (0.209″ / 5.30mm width), this device is optimized for code storage and data logging applications in consumer electronics, IoT devices, and embedded systems, offering flexible erase architecture, low power consumption, and high reliability with 100K program/erase cycles and 20-year data retention.

主要规格

Parameter Value
制造商 Renesas Electronics (Adesto Technologies)
Memory Type Non-Volatile NOR Flash
Memory Size 128Mbit (16M x 8 / 16MB)
Interface SPI (Standard, Dual I/O, Quad I/O)
Maximum Clock Frequency 133 兆赫
Data Transfer Rate (Quad I/O) Up to 480 Mbps
Data Transfer Rate (Quad Output) Up to 532 Mbps
Supply Voltage (VCC) 2.7V 至 3.6V
Active Supply Current 22 mA (max)
Standby Current 13 µA (typ)
Deep Power-Down Current 2 µA (typ)
Access Time 7 ns
Page Program Size 256 Bytes
Page Program Time 0.6 ms (typ)
Sector Erase (4 KB) 70 ms (typ)
Block Erase (32 KB) 150 ms (typ)
Block Erase (64 KB) 250 ms (typ)
Full Chip Erase 30 s (typ)
Endurance 100,000 program/erase cycles
Data Retention 20 years
Security Registers 3 x 256-byte OTP
包装 8-SOIC Wide (0.209″ / 5.30mm width)
安装类型 Surface Mount (SMT)
工作温度 -40°C to +85°C (Industrial)
Packing Tape & Reel
RoHS Compliance Yes (ROHS3, Pb/Halide-free)
MSL 等级 MSL 1 (Unlimited)

特点

  • Flexible SPI Interface: Supports SPI Modes 0 and 3 with standard single-bit, dual I/O (up to 240 Mbps), and quad I/O (up to 480 Mbps) data transfer modes, enabling designers to balance pin count and throughput.
  • High-Speed Performance: 133 MHz maximum clock frequency with 7 ns access time. Quad Output read achieves up to 532 Mbps throughput for rapid code fetch and data streaming.
  • Optimized Erase Architecture: Flexible sector/block erase options (4 KB sector, 32 KB block, 64 KB block) plus full chip erase accommodate both code storage and data logging use cases without wasting erase cycles.
  • Low Power Consumption: Only 13 µA standby current and 2 µA deep power-down current make it ideal for battery-powered and energy-harvesting applications.
  • Program/Erase Suspend & Resume: Allows the system to pause an ongoing program or erase operation to perform a time-critical read, then resume without losing progress.
  • Hardware & Software Write Protection: WP pin provides hardware-controlled locking of protected sectors; software block protection with top/bottom selection via status register; three 256-byte OTP security registers for key storage.
  • Serial Flash Discoverable Parameters (SFDP): Standardized parameter table enables automatic host controller configuration without hardcoded device-specific parameters.
  • Continuous Read with Wrap: Supports 8/16/32/64-byte wrap for cache-line-aligned execution, reducing overhead in XIP (Execute-in-Place) applications.

应用

  • Code Storage & Execute-in-Place (XIP): Stores firmware, bootloader, and application code for microcontrollers and application processors. The fast read speed and continuous read with wrap enable direct code execution from flash without copying to RAM, reducing boot time and memory footprint.
  • IoT & Wearable Devices: Ideal for sensor data logging, configuration storage, and wireless firmware update (OTA) image buffering in smart home devices, wearables, and industrial IoT nodes where low standby current extends battery life.
  • 消费电子产品： Used in smart speakers, set-top boxes, TVs, and audio equipment for storing system firmware, UI assets, voice prompts, and user settings. The flexible erase architecture supports both large firmware images and frequent small data updates.
  • Automotive & Industrial Data Logging: Records operational parameters, fault codes, and diagnostic data in automotive ECUs, PLCs, and industrial control systems. Wide industrial temperature range (-40°C to +85°C) ensures reliable operation in harsh environments.
  • Communication Equipment: Stores FPGA bitstreams, routing tables, and configuration data in network switches, routers, base stations, and communication modules where fast boot and non-volatile storage are essential.

The AT25SF128A-SHB-T is a 128Mbit (16MB) Serial NOR Flash Memory from Renesas Electronics (originally developed by Adesto Technologies / Dialog Semiconductor). Designed for high-volume consumer and industrial applications, this device provides flexible code storage and data logging capabilities through its SPI-compatible interface with support for standard, dual, and quad I/O modes.

With a maximum clock frequency of 133 MHz and access time of just 7 ns, the AT25SF128A delivers fast read performance suitable for Execute-in-Place (XIP) applications. The quad I/O interface achves data transfer rates up to 480 Mbps, while quad output mode pushes throughput to 532 Mbps, enabling rapid firmware fetch and data streaming.

The device features an optimized and flexible erase architecture that supports 4 KB sector erase, 32 KB and 64 KB block erase, and full chip erase. This granularity allows efficient use of flash space for both large firmware images and frequent small data updates, without wasting erase cycles on unused capacity. Program/Erase suspend and resume capability further enhances system responsiveness.

Power efficiency is a key strength: with only 13 uA standby current and 2 uA deep power-down current, the AT25SF128A-SHB-T is ideal for battery-powered and energy-harvesting designs. The device offers 100,000 program/erase cycles and 20-year data retention, ensuring long-term reliability across industrial temperature range (-40C to +85C). Housed in a standard 8-lead wide-body SOIC package (0.209 inch / 5.30mm width), it is compatible with industry-standard PCB footprints.

NOR Flash Memory Architecture

The AT25SF128A uses a NOR-type flash memory array where each memory cell consists of a single floating-gate MOS transistor. Unlike NAND flash, NOR architecture allows random access to individual bytes, making it suitable for code execution directly from the flash array (Execute-in-Place). The 128Mbit array is organized as 16M x 8 bits, addressable through 24-bit addressing.

SPI Interface Protocol

Communication with the host controller occurs through a standard 4-wire SPI bus (CS, SCLK, SI/MOSI, SO/MISO). The device supports SPI Modes 0 and 3, with data latched on the rising edge of SCLK and output on the falling edge. Instructions are initiated by driving CS low, followed by an 8-bit instruction opcode. In standard mode, data transfers use single-bit serial communication. In dual and quad modes, the SI and SO pins (plus WP and HOLD pins in quad mode) become bidirectional I/O lines, transferring 2 or 4 bits per clock cycle respectively.

Programming and Erase Mechanism

Writing data involves a two-step process: first, the target area must be erased (flash cells return to logic high / 0xFF state), then individual bytes are programmed to the desired values. The device supports page programming of up to 256 bytes in a single operation (typical 0.6 ms). Erase operations are available at sector (4 KB), block (32 KB or 64 KB), or full chip level. Both program and erase operations can be suspended to allow time-critical read operations, then resumed.

Protection and Security

The device provides multiple layers of write protection: hardware WP pin for sector-level locking, software block protection via status register with top/bottom selection, and three 256-byte one-time programmable (OTP) security registers for storing encryption keys or unique identifiers. The Serial Flash Discoverable Parameters (SFDP) register enables automatic host controller configuration.

针脚 名称 类型 功能
1 CS (Chip Select) 输入 Active-low chip select; initiates instruction sequence when driven low; device enters standby when high; all inputs ignored and outputs high-Z when CS is high
2 SO / IO1 输入/输出 Serial data output in standard SPI mode; becomes bidirectional I/O1 in dual and quad modes for data transfer
3 WP / IO2 输入/输出 Write protect input in standard/dual mode; when low with SRP bits set, prevents status register writes; becomes bidirectional I/O2 in quad mode; internal pull-up, may be left unconnected if not used
4 接地 电源 Ground reference for all internal circuits and I/O signals
5 SI / IO0 输入/输出 Serial data input in standard SPI mode; receives instructions, addresses, and program data; becomes bidirectional I/O0 in dual and quad modes
6 SCLK (Serial Clock) 输入 SPI clock input; latches input data on rising edge; output data changes on falling edge; provides synchronization reference for all SPI operations
7 HOLD / IO3 输入/输出 Hold (pause) control in standard/dual mode; when CS is low and HOLD goes low, device suspends communication; becomes bidirectional I/O3 in quad mode; internal pull-up, may be left unconnected if not used
8 VCC 电源 Core and I/O power supply (2.7V to 3.6V); requires 100nF decoupling capacitor placed close to pin

Note: In Quad I/O mode, pins 2 (IO1), 3 (IO2), 5 (IO0), and 7 (IO3) all function as bidirectional data lines, enabling 4-bit parallel data transfer per clock cycle.

  • Code Storage and Execute-in-Place (XIP): Stores firmware, bootloader, and application code for microcontrollers and application processors. The 133 MHz read speed and continuous read with 8/16/32/64-byte wrap enable direct code execution from flash, reducing boot time and RAM requirements in resource-constrained embedded systems.
  • IoT and Wearable Data Logging: Records sensor data, configuration parameters, and wireless OTA update images in smart home devices, wearables, and industrial IoT nodes. The 2 uA deep power-down current and 13 uA standby current maximize battery life in always-on sensing applications.
  • Consumer Electronics Firmware: Used in smart speakers, set-top boxes, TVs, and audio equipment for storing system firmware, UI assets, voice prompts, and user preferences. The flexible 4 KB / 32 KB / 64 KB erase architecture supports both large firmware images and frequent small data updates.
  • Automotive and Industrial Diagnostics: Records operational parameters, fault codes, and diagnostic data in automotive ECUs, PLCs, motor controllers, and industrial instrumentation. Industrial temperature range (-40C to +85C) ensures reliable operation in demanding environments.
  • Communication Infrastructure: Stores FPGA bitstreams, routing tables, and boot configuration in network switches, routers, cellular base stations, and wireless access points where fast boot and reliable non-volatile storage are essential for network uptime.
制造商 部件编号 包装 Key Differences
Winbond W25Q128JVSIQ SOIC-8W Pin-compatible; 128Mbit SPI NOR; 133 MHz; wider voltage range (2.7-3.6V); industry-standard replacement
旺宏 MX25L12833FZMI SOIC-8W 128Mbit SPI NOR; 133 MHz; improved security features; MXICY branding
千兆设备 GD25Q128CSIG SOIC-8W 128Mbit SPI NOR; 120 MHz; cost-effective alternative; compatible pinout
Winbond W25Q128FVSIQ SOIC-8W Older generation; 128Mbit; 104 MHz; proven track record; lower cost
美光 N25Q128A13ESF40F SOIC-8W 128Mbit SPI NOR; 108 MHz; Micron/Numonyx heritage; automotive qualified options
Renesas (Adesto) AT25SL128A-SHB-T SOIC-8W Same family; 128Mbit; enhanced low-voltage version (1.65-2.0V); pin-compatible
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质量保证

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

1. Authorized & Genuine Sourcing Promise

All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

3. Industry Standard Compliance

Our products comply with a variety of international industry quality standards to adapt to high-standard application scenarios:
  • 汽车电子: All automotive-grade components pass AEC-Q series certification, featuring excellent stability and durability to adapt to complex vehicle operating environments.
  • 医疗设备: High-reliability components meet medical industry safety and compliance regulations, ensuring stable operation for medical equipment.
  • Industrial Control & Consumer Electronics: Products conform to universal international electronic industry standards, suitable for long-term continuous operation of various equipment.

4. Professional Reliability Control

For static-sensitive, moisture-sensitive and precision components such as ICs, PCBs, sensors and connectors, we carry out reliability screening in advance. Combined with standardized ESD anti-static packaging and vacuum moisture-proof packaging, we avoid component damage caused by static electricity, dampness or collision during storage and transportation, and retain the original performance of products.

5. Traceability Management System

We establish a complete product traceability system. Each batch of goods corresponds to independent batch number, sourcing record, inspection record and delivery record. Customers can query the whole lifecycle information of components at any time. This system effectively solves quality risks and facilitates after-sales handling and production quality control for your company.

6. After-sales Quality Guarantee

If any product is confirmed to have non-conformity quality problems due to our reasons after receipt, we provide free return, exchange and supplementary delivery services. Our professional quality team will also conduct root cause analysis to optimize our quality control process. We respond to quality feedback within 24 hours to resolve your worries efficiently.

联系我们

If you have inquiries about our quality standards, inspection procedures or product certification documents, please feel free to contact us:

 

Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

发货与付款

Materialparts is a professional global supplier of electronic components with over 20 years of industry experience. We provide one-stop supply of passive components, integrated circuits, as well as parts for industrial control, automotive electronics, consumer electronics and medical devices. Below are the unified shipping and payment policies applicable to all orders, samples and bulk purchases worldwide.

1. Payment Terms

We offer a variety of secure and convenient payment methods to meet diverse business cooperation needs. Details are as follows:
  1. Accepted Payment Methods
  • T/T (Bank Wire Transfer): The primary settlement method for bulk orders and a widely used international payment channel.
  • PayPal: Ideal for small orders, sample orders and quick payments.

  1. Settlement Currency

     

    US Dollar (USD) is the default settlement currency. RMB is available for domestic customers.

  2. Bank Charges

     

    All transfer fees, intermediary bank charges and other remittance-related expenses shall be borne by the buyer.

  3. Payment Requirements
  • Sample and small orders: Shipment will be arranged upon full payment.
  • In-stock bulk orders: Goods will be delivered within 2 to 3 working days after full payment.

2. Shipping & Delivery

We partner with leading global logistics providers to ensure safe and fast delivery worldwide. Relevant details are listed below:
  1. Logistics Partners
  • International Express: DHL, FedEx, UPS, TNT
  • Economy Logistics: Air freight and sea freight for large-volume cargo
  • Domestic Delivery: SF Express, Yunda Express
  1. Order Processing Time
  • In-stock items: Orders confirmed and fully paid before 14:00 (GMT+8) will be shipped on the same day. All other orders will be dispatched within 1 to 2 working days.
  • Out-of-stock or sourced items: The delivery lead time will be confirmed separately according to brand and inventory status.
  1. Estimated Transit Time
  • International Express: 3 – 7 working days globally
  • Air Freight: 7 – 12 working days
  • Sea Freight: 25 – 40 working days for heavy and large bulk cargo
  1. Shipping Fee Rules
  • Shipping cost is calculated based on package weight, volume, destination and delivery method.
  • Both freight prepaid and freight collect are available. Please provide your courier account number in advance if you choose freight collect.
  • Free international express delivery is offered for large orders. Terms for long-term partners can be negotiated separately.
  1. Shipment Tracking
     

    Within 24 hours after dispatch, we will send the tracking number, commercial invoice, packing list and other documents to your email or communication account. You may check the shipment status online in real time.

3. General Order Rules & Notes

  1. MOQ & Sample Service

     

    We support flexible minimum order quantities for samples, small-batch and large-batch orders. All sample orders shall comply with the above shipping and payment policies.

  2. Packaging Standard

     

    All electronic components are packed with professional anti-static and shockproof materials. Original factory packaging is available for branded chips and integrated circuits.

4. Customs & Liability Statement

  1. Import Duties & Taxes

     

    All import duties, customs clearance fees and local taxes incurred for international shipments shall be borne by the buyer. We will provide complete customs documents to assist you with clearance procedures.

  2. Handling of Lost or Damaged Goods
  • In case of loss or severe damage during transit, please contact us within 48 hours after receiving the tracking information. We will assist you in filing a claim with the logistics provider.
  • We shall not be liable for any losses caused by incorrect delivery address, wrong contact information or the buyer’s refusal to complete customs clearance.

5. Local Pickup in Shenzhen

Local pickup service is available for customers in Shenzhen and surrounding areas:
  • Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong Province, China
  • Business Hours: 09:00 – 18:00, Monday to Friday. Closed on weekends and official public holidays.
  • Notice: Please make an appointment via email or communication tools one day in advance, and present your order information upon pickup.

Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

服务与包装

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

Core Services

1. One-stop Sourcing & BOM Support

We specialize in a full range of passive and active electronic components, including SMD resistors, power resistors, connectors, aviation connectors, LED beads, flexible circuit boards, printed circuit boards, and integrated circuits. Our professional team provides BOM list consolidation, component matching, and alternative model recommendation services. We support sample orders, small-batch trial production, and mass production orders with flexible MOQs to meet diverse procurement needs.

2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

3. Fast Quotation & Order Processing

Our customer service team responds promptly to inquiries and quotation requests. All in-stock orders will be processed within one working day. We provide stocking reservation services for long-term cooperative customers, effectively solving problems such as component shortages and unstable supply chains.

4. Professional Technical Support

Our senior engineer team provides free technical consultation, model selection guidance and original manufacturer datasheets. We assist customers in solving problems related to product R&D, circuit design and component application, providing reliable technical support for project progress.

5. Sourcing for Special Components

Relying on our global supply chain network, we professionally source scarce components, obsolete parts and customized special components to efficiently solve your procurement difficulties.

6. Global Logistics & Document Services

We cooperate with mainstream international logistics providers including DHL, FedEx, UPS and TNT to achieve fast global delivery. We can provide complete export documents such as customs declaration files, commercial invoices and packing lists to ensure smooth customs clearance for international shipments. Local pickup is also available for customers in Shenzhen, China.

Professional Packaging Standards

Electronic components are sensitive to static electricity, collision, moisture and dust. We adopt industry-standard anti-static packaging solutions to fully ensure the integrity of goods during transportation and storage.

1. General Packaging Specifications

  • All components are packed separately to avoid damage caused by friction and collision;
  • Shockproof buffer materials are added for fragile products to ensure transportation safety;
  • Each package is clearly marked with part number, quantity, batch number and specifications for easy inventory counting and management.

2. Classified Professional Packaging

  • Anti-static Packaging: Static-sensitive components such as chips, circuit boards and sensors are packaged with anti-static bags, shielding boxes and conductive foam in strict accordance with international anti-static standards to prevent static damage.
  • Vacuum Moisture-proof Packaging: Moisture-sensitive components are vacuum-sealed with desiccants to isolate humid air, suitable for ocean transportation and long-term storage.
  • Original Factory Packaging: Integrated circuits of brands such as NXP are delivered with original reels, trays or tubes by default, retaining complete original packaging and adapting to automated SMT production lines.
  • Discrete Device Packaging: Discrete devices such as SMD resistors, power resistors and LEDs are quantitatively and classifiedly packaged with accurate quantity and clear marking.
  • Connector / Aviation Connector Packaging: Hard outer packaging is adopted to prevent pin bending and structural deformation.

3. Custom Packaging Services

We provide value-added services including personalized packaging, custom labeling and re-reeling according to customer requirements, fully matching your production and warehouse management standards.

Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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