ATMEGA644PA-MU vs ATMEGA1284P-MU 对比
详细并排对比 ATMEGA644PA-MU 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-MU - 8-bit AVR MCU 64KB 20MHz VQFN-44 | Microchip
ATMEGA644PA-MU ✓ 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-MU | 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） | $3.78 | $4.10 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC |
| Core Frequency | 20 MHz | — |
| Flash Memory | 64 KB (32K x 16) ISP Flash, read-while-write | 128 KB (64K x 16) ISP, Read-While-Write |
| EEPROM | 2 KB | 4 KB |
| SRAM | 4 KB | 16 KB |
| GPIO Count | 32 | — |
| MIPS Throughput | Up to 20 MIPS at 20 MHz | — |
| Instructions | 131 instructions, most single-cycle | — |
| Timer/Counters | Three flexible timer/counters with compare modes and PWM | 3 (with compare modes and PWM) |
| USART | Two programmable serial USARTs | 2 |
| Serial Interfaces | Two-Wire Interface (I2C-compatible), SPI | — |
| ADC | 8-channel 10-bit ADC | — |
| RTC | Real Time Counter with separate oscillator | — |
| Low Power Technology | picoPower | — |
| Supply Voltage Range | 2.5 V / 3.3 V / 5 V class (per distributor listing: 2.5V/3.3V/5V) | 2.7 V to 5.5 V |
| 封装 | 44-VQFN (7x7 mm), exposed pad | 44-VQFN (7x7 mm) with Exposed Pad |
| 安装类型 | Surface Mount | Surface Mount |
| RoHS 状态 | RoHS compliant (per Microchip product listing) | Compliant (per Microchip product page) |
| Data Sheet Document Number | DS40002070A (per Microchip ATMEGA644PA-MU data sheet) | — |
| Max CPU Clock | — | 20 MHz |
| I/O Lines | — | 32 general purpose |
| 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 |
| 工作温度 | — | [DATA_NEEDED: temperature range for -MU speed grade] |
| Programming Interface | — | ISP via SPI, self-programming boot support |