ATMEGA644PA-MU vs ATMEGA644-20MUR 对比
详细并排对比 ATMEGA644PA-MU 出自 Microchip Technology 和 ATMEGA644-20MUR 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
ATMEGA644-20MUR - 8-bit AVR MCU 64KB Flash 20MHz | Microchip
ATMEGA644-20MUR ✓ 量产中规格对比
| 参数 | ATMEGA644PA-MU | ATMEGA644-20MUR |
|---|---|---|
| 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 | $5.05 |
| 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 | — |
| EEPROM | 2 KB | 2KB |
| SRAM | 4 KB | 4KB |
| 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 | — |
| USART | Two programmable serial USARTs | — |
| Serial Interfaces | Two-Wire Interface (I2C-compatible), SPI | — |
| ADC | 8-channel 10-bit ADC | 10-bit |
| 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) | 4.5 V to 5.5 V |
| 封装 | 44-VQFN (7x7 mm), exposed pad | 44-VQFN (7x7 mm) Exposed Pad |
| 安装类型 | Surface Mount | Surface Mount |
| RoHS 状态 | RoHS compliant (per Microchip product listing) | [DATA_NEEDED: RoHS status] |
| Data Sheet Document Number | DS40002070A (per Microchip ATMEGA644PA-MU data sheet) | — |
| Max Clock Frequency | — | 20 MHz |
| Program Memory (Flash) | — | 64KB (32K x 16) |
| 数据总线宽度 | — | 8 Bit |
| General Purpose I/O | — | 32 I/O lines |
| Timers/Counters | — | 3 (with compare modes and PWM) |
| Communication Interfaces | — | USART, SPI, TWI (I2C) |
| Programming Interface | — | ICSP (In-Circuit Serial Programming), debugWIRE |
| 工作温度 | — | Industrial (-40C to +85C) |
| Lifecycle Stage | — | ACTIVE |