ATMEGA644PA-MNR vs ATMEGA1284P-MU 对比
详细并排对比 ATMEGA644PA-MNR 出自 Microchip Technology 和 ATMEGA1284P-MU 出自 Microchip Technology。对比关键规格、电气参数、封装、生命周期状态、价格和供货情况，以确定最适合您设计需求的元器件。
Microchip Technology
ATMEGA644PA-MNR - 8-bit AVR MCU 64KB Flash 20MHz | Microchip
ATMEGA644PA-MNR ✓ 量产中Microchip Technology
ATMEGA1284P-MU - 128KB Flash 8-Bit AVR MCU 20MHz | Microchip
ATMEGA1284P-MU ✓ 量产中规格对比
| 参数 | ATMEGA644PA-MNR | ATMEGA1284P-MU |
|---|---|---|
| 品牌 | Microchip Technology | Microchip Technology |
| 分类 | Microcontrollers | Microcontrollers |
| 生命周期状态 | 有效 | 有效 |
| 库存状态 | 有库存 | 有库存 |
| 单价（USD） | $1.80 | $4.10 |
| Core | AVR 8-bit RISC | — |
| Program Memory Size | 64 KB (32K x 16) Flash | — |
| Program Memory Type | ISP FLASH, read-while-write | — |
| EEPROM Size | 2 KB | — |
| SRAM Size | 4 KB (4K x 8) | — |
| CPU Speed | 20 MHz | — |
| Number of I/O | 32 | — |
| General Purpose Working Registers | 32 | — |
| Instructions | 131, mostly single-clock cycle | — |
| Oscillator Type | Internal | — |
| 封装 / 外壳 | 44-VQFN (7x7 mm) Exposed Pad | — |
| 安装类型 | Surface Mount | Surface Mount |
| Packaging | Tape & Reel (TR) | — |
| Programming / Debug | ICSP, JTAG | — |
| Technology Feature | picoPower low-power technology | — |
| 工作温度 | [DATA_NEEDED: exact grade per suffix; Mouser lists 105C grade variant] | [DATA_NEEDED: temperature range for -MU speed grade] |
| Operating Voltage Range | [DATA_NEEDED: exact VCC range for this suffix] | — |
| Core Architecture | — | 8-bit AVR RISC |
| Max CPU Clock | — | 20 MHz |
| Flash Memory | — | 128 KB (64K x 16) ISP, Read-While-Write |
| EEPROM | — | 4 KB |
| SRAM | — | 16 KB |
| Supply Voltage Range | — | 2.7 V to 5.5 V |
| I/O Lines | — | 32 general purpose |
| USART | — | 2 |
| Timer/Counters | — | 3 (with compare modes and PWM) |
| Real Time Counter (RTC) | — | Yes |
| 10-bit ADC | — | 8 channels |
| TWI (I2C) | — | 1, byte-oriented 2-wire |
| SPI | — | 1 |
| Watchdog Timer | — | Yes, programmable with on-chip oscillator |
| 封装 | — | 44-VQFN (7x7 mm) with Exposed Pad |
| Programming Interface | — | ISP via SPI, self-programming boot support |
| RoHS 状态 | — | Compliant (per Microchip product page) |