ATMEGA644P-20MQ vs ATMEGA644P-20MU 对比
详细并排对比 ATMEGA644P-20MQ 出自 Microchip Technology 和 ATMEGA644P-20MU 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
ATMEGA644P-20MQ - 8-bit AVR MCU 64KB 20MHz VQFN-44 | Microchip
ATMEGA644P-20MQ NrndMicrochip Technology
ATMEGA644P-20MU - 8-bit AVR MCU 20MHz 64KB Flash | Microchip
ATMEGA644P-20MU Nrnd规格对比
| 参数 | ATMEGA644P-20MQ | ATMEGA644P-20MU |
|---|---|---|
| 品牌 | Microchip Technology | Microchip Technology |
| 分类 | Microcontrollers | Microcontrollers |
| 生命周期状态 | 不推荐新设计 | 不推荐新设计 |
| 库存状态 | 有库存 | 有库存 |
| 单价（USD） | $2.48 | $5.02 |
| Core Architecture | AVR 8-bit RISC | AVR 8-bit enhanced RISC |
| CPU Speed | 20 MHz | — |
| Throughput | Up to 20 MIPS (1 MIPS per MHz) | — |
| Flash Program Memory | 64 KB (32K x 16) | — |
| SRAM | 4 KB (4,096 bytes) | 4 KB |
| EEPROM | 2 KB (2,048 bytes) | 2 KB |
| Operating Voltage | 5 V | — |
| Number of I/O | 32 | — |
| Digital Communication Peripherals | 2 UART | — |
| Oscillator Type | Internal | — |
| Instructions | 131 powerful instructions, most single-cycle | — |
| 封装 | 44-VQFN (7x7 mm) with exposed pad | 44-VQFN (7x7 mm) exposed pad |
| 安装类型 | Surface Mount | Surface Mount |
| Temperature Grade | Industrial, extended temperature | — |
| Packaging | Tape & Reel (TR) | — |
| Technology Feature | picoPower low-power, green/RoHS | — |
| Programming | ICSP via 2 I/O pins + reset, MPLAB SNAP compatible | — |
| Lifecycle | Mature; NRND - replaced by ATmega644PA | — |
| 最大时钟频率 | — | 20 MHz |
| Flash Memory | — | 64 KB (32K x 16) |
| 电源电压 | — | 4.5 V to 5.5 V (at 20 MHz) |
| USART Count | — | 2 |
| ADC | — | 10-bit, up to 8 channels |
| Interfaces | — | SPI, TWI (I2C-compatible), USART, JTAG |
| 工作温度 | — | Industrial range |
| MIPS Rating | — | Up to 20 MIPS (1 MIPS/MHz) |
| RoHS 状态 | — | Green / RoHS compliant |
| Product Status | — | Mature product; not recommended for new designs, replaced by ATmega644PA |