ATMEGA644P-20MQR vs ATMEGA644PA-AU 对比
详细并排对比 ATMEGA644P-20MQR 出自 Microchip Technology 和 ATMEGA644PA-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 | ATMEGA644P-20MQR | ATMEGA644PA-AU |
|---|---|---|
| 品牌 | Microchip Technology | Microchip Technology |
| 分类 | Microcontrollers | Microcontrollers |
| 生命周期状态 | 不推荐新设计 | 有效 |
| 库存状态 | 有库存 | 有库存 |
| 单价（USD） | $4.30 | $4.61 |
| Core Processor | AVR 8-bit RISC | — |
| Core Size | 8-bit | — |
| Speed (Max Clock) | 20 MHz | — |
| Flash Program Memory | 64 KB (32K x 16) | — |
| SRAM | 4 KB (4K x 8) | 4 KB |
| EEPROM | 2 KB | 2 KB |
| Number of I/O | 32 | — |
| Supply Voltage (VCC) | 4.5 V to 5.5 V (at 20 MHz) | — |
| Oscillator Type | Internal | — |
| USART Count | 2 (P variant dual USART) | — |
| Timers | Two 8-bit, one 16-bit | — |
| ADC | 8-channel, 10-bit | 8-channel, 10-bit |
| Communication Interfaces | USART x2, SPI, TWI (I2C) | — |
| Debug Interface | JTAG (on-chip debug, boundary scan) | — |
| Instruction Set | 131 instructions, mostly single-cycle | — |
| Low Power Technology | picoPower | — |
| 工作温度 | -40C to +105C (extended, M grade) | -40C to +85C (industrial) |
| 封装 / 外壳 | 44-VQFN (7x7 mm) exposed pad (MLF) | — |
| 安装类型 | Surface Mount | Surface Mount |
| Packaging | Tape & Reel (TR) | — |
| RoHS / Green Status | GREEN, RoHS compliant | — |
| Core Architecture | — | AVR 8-bit RISC |
| Family | — | ATmega |
| Series | — | ATmega644P / picoPower |
| 最大时钟频率 | — | 20 MHz |
| Program Memory (Flash) | — | 64 KB (32K x 16) |
| Supply Voltage Range | — | 1.8 V to 5.5 V |
| GPIO Pins | — | 32 |
| USART | — | 2 |
| I2C (TWI) | — | 1 |
| SPI | — | 1 |
| Timer/Counters | — | 3 (with PWM and compare modes) |
| 封装 | — | 44-pin TQFP (10x10 mm) |
| MIPS | — | 20 MIPS at 20 MHz |
| Programming Interface | — | ISP / ICSP / JTAG / debugWIRE |
| RoHS 状态 | — | Compliant |