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ATMEGA1284P-AU


8-bit AVR MCU, 20MHz, 128KB Flash, 16KB SRAM, 4KB EEPROM, dual USART, TQFP-44

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制造商零件:

ATMEGA1284P-AU

包装:

TQFP-44 (10.0 x 10.0 x 1.20 mm)

品牌:
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说明

产品概览

The ATMEGA1284P-AU from Microchip Technology is an 8-bit AVR RISC microcontroller with 128KB Flash, 16KB SRAM, and 4KB EEPROM. Running at 20 MHz with picoPower technology, it features dual USARTs, 3 SPI, JTAG debug, 8-channel 10-bit ADC, and 32 I/O pins in a 44-pin TQFP (10x10mm) package.

主要规格

核心 AVR Enhanced RISC (8-bit)
Max Clock 20 MHz
闪光灯 128 KB
SRAM 16 KB
EEPROM 4 KB
ADC 10-bit, 8 channels, differential with PGA
计时器 4 (2x 8-bit, 2x 16-bit)
USARTs 2 (with hardware SPI support)
SPI 3 (including USART in SPI mode)
I2C/TWI 1
PWM 6 channels
Comparators 1 (with multiplexed inputs)
I/O Pins 32
电源电压 1.8V – 5.5V
picoPower Yes (ultra-low power in active and sleep)
包装 TQFP-44 (10 x 10 mm)
Operating Temp -40 to 85 C

特点

  • 128KB Flash with 16KB SRAM (8x Arduino Uno SRAM) and 4KB EEPROM
  • picoPower technology for ultra-low power consumption
  • Dual independent USARTs for simultaneous serial communication
  • 8-channel 10-bit ADC with optional differential input and programmable gain
  • JTAG interface for on-chip debugging and boundary scan
  • 6 software-selectable power saving modes including Power-Down at 100 nA
  • 32 general-purpose I/O lines with internal pull-up resistors
  • 32 general-purpose working registers for efficient C code execution

应用

  • 3D printer controllers (Reprap, Melzi)
  • IoT sensor nodes with dual serial interfaces
  • Home automation with 16KB SRAM for protocol stacks
  • Battery-powered data loggers with picoPower
  • Industrial control with JTAG debug capability

The ATMEGA1284P-AU from Microchip Technology is a high-performance, low-power 8-bit AVR RISC microcontroller combining 128KB ISP Flash with read-while-write capability, 16KB SRAM (the largest in the ATmega product line for 8-bit designs), and 4KB EEPROM. Operating at up to 20 MHz, it achieves near 1 MIPS per MHz throughput. The picoPower technology minimizes power consumption in both active and sleep modes, with Power-Down mode consuming as little as 100 nA. Dual independent USARTs enable simultaneous communication with two serial devices. The 8-channel 10-bit ADC supports optional differential input with programmable gain for direct sensor interfacing.

The ATMEGA1284P-AU uses the AVR enhanced RISC architecture with 131 instructions, most executing in a single clock cycle. The 32 general-purpose working registers are directly connected to the ALU, allowing two registers to be accessed in one instruction and enabling efficient C compiler code generation. The 16KB SRAM is particularly significant for applications requiring large data buffers such as network protocol stacks (TCP/IP), display frame buffers, or 3D printer motion planning. The Harvard architecture separates program memory (Flash) from data memory (SRAM), with a 16-bit program counter addressing 128KB Flash and 16-bit data pointers accessing the full 16KB SRAM. The dual USARTs are independent with separate baud rate generators, enabling concurrent communication at different speeds. The ADC uses a successive approximation architecture with 10-bit resolution and auto-triggering capability from timer compare matches for precise sampling intervals.

针脚 名称 类型 功能
VCC 2 电源 Supply (1.8-5.5V)
接地 3 地面 地面
AVCC 1 电源 ADC supply
AREF 1 Reference ADC reference voltage
PA0-PA7 8 输入/输出 Port A – ADC channels 0-7, JTAG
PB0-PB7 8 输入/输出 Port B – SPI, USART0, timer I/O
PC0-PC7 8 输入/输出 Port C – TWI, JTAG (TCK/TMS/TDI/TDO)
PD0-PD7 8 输入/输出 Port D – USART0/1, INT0-3, timer I/O
XTAL1/XTAL2 2 输入/输出 Oscillator pins
重置 1 输入 Reset (active low)
  • 3D printers: 16KB SRAM for motion planning, dual UART for host and LCD
  • IoT nodes: picoPower sleep modes with dual USART for WiFi + GPS modules
  • Home automation: TCP/IP stack in 16KB SRAM with TWI sensor bus
  • Data loggers: 4KB EEPROM for calibration + 128KB Flash for firmware
  • Industrial control: JTAG debug with differential ADC for sensor measurement
制造商 部件编号 包装 说明
微型芯片 ATMEGA1284P-PU PDIP-40 40-pin DIP, same die, prototyping
微型芯片 ATMEGA644P-AU TQFP-44 64KB Flash, 4KB SRAM, lower cost
微型芯片 ATMEGA2560-16AU TQFP-100 256KB Flash, 8KB SRAM, more I/O
ST STM32F103C8T6 LQFP-48 ARM M3, 72 MHz, 20KB SRAM, 64KB Flash
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Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

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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.

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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.

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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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