ATMEGA644-20AU vs ATMEGA644P-20MQR 对比
详细并排对比 ATMEGA644-20AU 出自 Microchip Technology 和 ATMEGA644P-20MQR 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
ATMEGA644-20AU - 8-Bit AVR MCU 64KB Flash 20MHz | Microchip
ATMEGA644-20AU Nrnd
规格对比
| 参数 | ATMEGA644-20AU | ATMEGA644P-20MQR |
|---|---|---|
| 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） | $4.96 | $4.30 |
| Core Architecture | 8-bit AVR RISC | — |
| Program Memory | 64 KB In-System Programmable Flash (32K x 16) | — |
| SRAM | 4 KB | 4 KB (4K x 8) |
| EEPROM | 2 KB | 2 KB |
| 最大时钟频率 | 20 MHz | — |
| Throughput | Up to 20 MIPS at 20 MHz | — |
| Operating Voltage Range | 2.7 V to 5.5 V | — |
| General Purpose I/O Pins | 32 | — |
| General Purpose Working Registers | 32 | — |
| ADC | 8-channel, 10-bit successive approximation | 8-channel, 10-bit |
| USART Interfaces | 2 | — |
| Timer/Counters | 2 x 8-bit, 1 x 16-bit with compare and PWM modes | — |
| Two-Wire Serial Interface | 1 (byte-oriented, I2C compatible) | — |
| SPI Interface | 1 (master/slave) | — |
| 封装 | 44-TQFP (10x10 mm) | — |
| 安装类型 | Surface Mount | Surface Mount |
| 工作温度范围 | -40C to +85C | — |
| Debug Interface | JTAG (IEEE 1149.1) with on-chip debug | JTAG (on-chip debug, boundary scan) |
| Sleep Modes | 6 (Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby) | — |
| RoHS 状态 | Compliant | — |
| Core Processor | — | AVR 8-bit RISC |
| Core Size | — | 8-bit |
| Speed (Max Clock) | — | 20 MHz |
| Flash Program Memory | — | 64 KB (32K x 16) |
| 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 |
| Communication Interfaces | — | USART x2, SPI, TWI (I2C) |
| Instruction Set | — | 131 instructions, mostly single-cycle |
| Low Power Technology | — | picoPower |
| 工作温度 | — | -40C to +105C (extended, M grade) |
| 封装 / 外壳 | — | 44-VQFN (7x7 mm) exposed pad (MLF) |
| Packaging | — | Tape & Reel (TR) |
| RoHS / Green Status | — | GREEN, RoHS compliant |