ATMEGA644PA-AU vs ATMEGA644A-AU 对比
详细并排对比 ATMEGA644PA-AU 出自 Microchip Technology 和 ATMEGA644A-AU 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-AU - 8-bit AVR MCU, 20MHz, 64KB Flash | Microchip
ATMEGA644PA-AU ✓ 量产中规格对比
| 参数 | ATMEGA644PA-AU | ATMEGA644A-AU |
|---|---|---|
| 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） | $4.61 | $5.40 |
| Core Architecture | AVR 8-bit RISC | 8-bit AVR enhanced RISC |
| Family | ATmega | — |
| Series | ATmega644P / picoPower | — |
| 最大时钟频率 | 20 MHz | — |
| Program Memory (Flash) | 64 KB (32K x 16) | — |
| SRAM | 4 KB | 4 KB |
| EEPROM | 2 KB | 2 KB |
| Supply Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| 工作温度 | -40C to +85C (industrial) | -40C to +85C (Industrial) |
| GPIO Pins | 32 | — |
| ADC | 8-channel, 10-bit | 8-channel, 10-bit |
| USART | 2 | 2 |
| I2C (TWI) | 1 | — |
| SPI | 1 | — |
| Timer/Counters | 3 (with PWM and compare modes) | 3 (with compare modes and PWM) |
| 封装 | 44-pin TQFP (10x10 mm) | 44-TQFP (10x10 mm) |
| 安装类型 | Surface Mount | Surface Mount |
| MIPS | 20 MIPS at 20 MHz | — |
| Programming Interface | ISP / ICSP / JTAG / debugWIRE | — |
| RoHS 状态 | Compliant | — |
| Program Memory Size | — | 64 KB Flash (32K x 16) |
| Program Memory Type | — | ISP FLASH with Read-While-Write |
| Maximum CPU Speed | — | 20 MHz (20 MIPS) |
| General Purpose I/O | — | 32 lines |
| Working Registers | — | 32 general purpose registers |
| Serial Interfaces | — | TWI (2-wire, I2C-compatible), SPI |
| Real Time Counter | — | Yes (RTC) |
| Device Series | — | ATmega644A |