ATMEGA644A-AUR vs ATMEGA644PA-AUR 对比
详细并排对比 ATMEGA644A-AUR 出自 Microchip Technology 和 ATMEGA644PA-AUR 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
ATMEGA644A-AUR - 8-bit AVR MCU 64KB Flash 20MHz TQFP-44 | Microchip
ATMEGA644A-AUR ✓ 量产中Microchip Technology
ATMEGA644PA-AUR - 8-Bit AVR MCU 64KB Flash 20MHz TQFP-44 | Microchip
ATMEGA644PA-AUR ✓ 量产中规格对比
| 参数 | ATMEGA644A-AUR | ATMEGA644PA-AUR |
|---|---|---|
| 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） | $2.75 | $1.78 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC (Harvard) |
| Max Clock Frequency | 20 MHz | — |
| Flash Memory | 64 KB (32K x 16), In-System Programmable, Read-While-Write | — |
| SRAM | 4 KB | 4 KB |
| EEPROM | 2 KB | 2 KB |
| I/O Lines | 32 general purpose | — |
| USART | 2 programmable serial USARTs | 2 |
| Timer/Counters | 3 with compare modes and PWM | — |
| ADC | 8-channel, 10-bit, optional differential input | 8-channel 10-bit |
| Serial Interfaces | 2-wire (TWI/I2C), SPI, 2x USART | TWI (I2C-compatible), SPI |
| Real Time Counter | Yes (RTC) | — |
| 封装 | 44-TQFP (10x10 mm) | 44-TQFP (10 x 10 mm) |
| 安装类型 | Surface Mount | Surface Mount |
| 工作温度 | Industrial temperature range | — |
| 电源电压 | [DATA_NEEDED: supply voltage range] | 2.5 V / 3.3 V / 5 V operation |
| RoHS 状态 | Compliant | Compliant (GREEN) |
| Life Cycle Stage | ACTIVE | — |
| Flash Memory (ISP) | — | 64 KB (32K x 16) with read-while-write |
| 最大时钟频率 | — | 20 MHz |
| Maximum Throughput | — | 20 MIPS (1 MIPS per MHz) |
| Instructions | — | 131 instructions, mostly single-clock cycle |
| Hardware Multiplier | — | On-chip 2-cycle multiplier |
| General Purpose I/O | — | 32 lines |
| Working Registers | — | 32 general purpose |
| Timers/Counters | — | 3 flexible timer/counters with compare modes and PWM |
| Real-Time Counter | — | Yes |
| Low Power Technology | — | picoPower |
| Packaging | — | Tape & Reel (T/R) |