首页 > 内存芯片 > 动态随机存取存储器（DRAM） > IS42S16400J-7TLI-TR

IS42S16400J-7TLI-TR

64Mbit SDR SDRAM, 4Mx16, 143MHz, 3.3V, LVTTL, 54-TSOP-II, Industrial, TR, Obsolete

3948

有效库存

转到查询

Image for reference only

制造商零件：

IS42S16400J-7TLI-TR

包装：

54-TSOP-II (22.22 x 10.16 x 1.0 mm)

说明

产品概览

The IS42S16400J-7TLI-TR is a ISSI product designed for electronic applications. It features compact design with reliable performance characteristics suitable for various industrial and consumer applications.

主要规格

Memory Type	SDR SDRAM
Density	64Mbit (8MB)
Organization	4M x 16
Internal Banks	4
Interface	LVTTL (Parallel)
Max Clock Frequency	143 MHz
Access Time	5.4 ns
电源电压	3.0V to 3.6V (3.3V Typ)
Operating Current	90 mA (Max)
Programmable CAS Latency	2, 3 clocks
Programmable Burst Length	1, 2, 4, 8, Full Page
Burst Sequence	Sequential / Interleave
Refresh	8K cycles / 64ms (Com/Ind/A1), 8K/32ms (A2)
Auto Refresh / Self Refresh	Yes / Yes
工作温度	-40 C to +85 C (Industrial)
包装	54-TSOP-II (10.16mm width)
Process Technology	72nm
部件状态	Obsolete

特点

64Mbit SDR SDRAM organized as 4M x 16; 143MHz maximum clock frequency; 4 internal banks for concurrent operation; Single 3.3V power supply; LVTTL-compatible inputs and outputs; Programmable CAS latency (2, 3 clocks); Programmable burst length (1, 2, 4, 8, full page); Programmable burst sequence (sequential/interleave); Auto precharge; Auto refresh (CBR); Self refresh mode; All signals referenced to positive clock edge; Tape and reel packaging

应用

Embedded systems main memory; Industrial control and automation; Networking equipment buffer memory; Consumer electronics; Set-top boxes; Automotive infotainment (legacy designs); Data buffering and FIFO applications; Legacy system maintenance and replacement

产品介绍：IS42S16400J-7TLI-TR 产品介绍

The IS42S16400J-7TLI-TR from ISSI (Integrated Silicon Solution, Inc.) is a 64Mbit SDR SDRAM organized as 4M x 16 bits, fabricated on 72nm process technology. Operating at a maximum clock frequency of 143MHz with 5.4ns access time, this device provides reliable synchronous DRAM performance for embedded and industrial applications. The quad-bank architecture enables concurrent bank operation, hiding row access and precharge times for seamless high-speed random access. The device supports programmable CAS latency of 2 or 3 clocks and programmable burst lengths of 1, 2, 4, 8, or full page, providing flexibility for various memory controller designs. Auto precharge and auto refresh (CBR) modes simplify memory controller design, while self refresh mode maintains data integrity during low-power standby. The -7TLI-TR designation indicates 143MHz speed grade (7ns tCK), industrial temperature range (-40C to +85C), TSOP-II package, and tape and reel packaging. Note: This device is classified as Obsolete; new designs should consider the IS42S16400N replacement or alternative SDRAM devices from ISSI.

工作原理：IS42S16400J-7TLI-TR 工作原理

The IS42S16400J-7TLI-TR operates as a synchronous dynamic random-access memory where all signals are registered on the positive edge of the system clock (CLK). The memory array is organized as four independent banks, each containing 1M words of 16 bits, allowing one bank to be accessed while another is being precharged. Memory access begins with an ACTIVE command that latches the bank address (BA0-BA1) and row address (A0-A11) to open a specific row in the selected bank. A subsequent READ or WRITE command latches the column address (A0-A9 with A10 for auto precharge) to access the target data within the active row. Data is transferred in burst mode starting at the selected column and continuing for the programmed burst length. The SDRAM requires periodic refresh to maintain data integrity, with 8192 refresh cycles every 64ms for commercial and industrial temperature grades. Auto refresh (CBR) performs this automatically, while self refresh mode allows the device to generate its own internal refresh cycles without external clock, enabling very low standby power consumption. The programmable mode register sets CAS latency, burst type, and burst length at initialization.

引脚说明：IS42S16400J-7TLI-TR 引脚定义和功能

针脚	名称	类型	功能
A0-A11	Address Inputs	输入	Multiplexed row/column address; row during ACTIVE, column during READ/WRITE
BA0, BA1	Bank Select	输入	Selects one of 4 internal banks for ACTIVE, READ, WRITE, or PRECHARGE
DQ0-DQ15	Data I/O	输入/输出	16-bit bidirectional data bus
CLK	System Clock	输入	Master clock; all inputs sampled on rising edge
CKE	Clock Enable	输入	Enables/disables CLK; controls power-down and self refresh entry
CS	Chip Select	输入	Active-low chip select; enables command decoding
RAS	Row Address Strobe	输入	Command input (with CAS, WE, CS)
CAS	Column Address Strobe	输入	Command input (with RAS, WE, CS)
WE	Write Enable	输入	Command input (with RAS, CAS, CS)
DQML, DQMH	Data Mask	输入	Lower/Upper byte data mask; masks input data during writes, enables/disables outputs during reads

Application Scenarios:In which products and applications isIS42S16400J-7TLI-TR 中古

Embedded System Main Memory: Provides 8MB of SDR SDRAM for microcontroller and FPGA-based embedded systems requiring moderate memory bandwidth at 143MHz.
工业控制： Serves as buffer and working memory in PLCs and industrial controllers with industrial temperature grade (-40C to +85C).
Legacy System Maintenance: Drop-in replacement for obsolete SDRAM in existing designs requiring 64Mbit 4Mx16 SDR devices.
Networking Buffer: Packet buffering in network equipment with burst-oriented access patterns and quad-bank interleaving.

Alternative Models:What chips are recommended as replacements for IS42S16400J-7TLI-TR

制造商	部件编号	包装	Density	说明
ISSI	IS42S16400N-7TLI	54-TSOP-II	64Mbit	Recommended replacement, newer generation
Alliance Memory	AS4C4M16SA-5TCN	54-TSOP-II	64Mbit	Pin-compatible alternative
ISSI	IS42S16160J-7TLI	54-TSOP-II	256Mbit	Higher density, same voltage/interface
Winbond	W9812G6KH-6	54-TSOP-II	128Mbit	Double density, backward compatible

IS42S16400J-7TLI-TR

有效库存

制造商零件：

包装：

品牌：

产品类别：

您可能感兴趣的其他建议.

说明

产品概览

主要规格

特点

应用

推荐部件

有库存：

有库存：

有库存：

有库存：

有库存：

有库存：

有效库存

制造商零件：

包装：

品牌：

产品类别：

您可能感兴趣的其他建议.

说明

产品概览

主要规格

特点

应用

推荐部件

有库存：

有库存：

有库存：

有库存：

有库存：

有库存：

质量保证

1. Authorized & Genuine Sourcing Promise

2. Strict Full-batch Quality Inspection

3. Industry Standard Compliance

4. Professional Reliability Control

5. Traceability Management System

6. After-sales Quality Guarantee

联系我们

发货与付款

1. Payment Terms

2. Shipping & Delivery

3. General Order Rules & Notes

4. Customs & Liability Statement

5. Local Pickup in Shenzhen

Contact Information

服务与包装

Core Services

1. One-stop Sourcing & BOM Support

2. Genuine Product Guarantee & Full-process Quality Inspection

3. Fast Quotation & Order Processing

4. Professional Technical Support

5. Sourcing for Special Components

6. Global Logistics & Document Services

Professional Packaging Standards

1. General Packaging Specifications

2. Classified Professional Packaging

3. Custom Packaging Services

Contact Information

Online Inquiry Form

公司名称

工业