ATMEGA649A-MU vs ATMEGA649V-8MI 对比
详细并排对比 ATMEGA649A-MU 出自 Microchip Technology 和 ATMEGA649V-8MI 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。
规格对比
| 参数 | ATMEGA649A-MU | ATMEGA649V-8MI |
|---|---|---|
| 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） | $4.42 | $4.02 |
| Core Architecture | 8-bit AVR RISC | AVR 8-bit RISC |
| Flash Memory | 64 KB (32K x 16) ISP Flash | — |
| EEPROM | 2 KB | 2KB |
| SRAM | 4 KB | — |
| Maximum Clock Speed | 16 MHz | — |
| Supply Voltage Range | 1.8 V to 5.5 V (4.5 V to 5.5 V for 16 MHz operation) | — |
| General Purpose I/O | 54/69 I/O lines | — |
| Working Registers | 32 general purpose registers | — |
| Debug Interface | JTAG (boundary scan and on-chip debug) | — |
| 封装 | 64-QFN (9x9 mm) with exposed pad (64-VFQFN) | 64-QFN (9x9 mm, VFQFN with exposed pad) |
| 安装类型 | Surface Mount | Surface Mount |
| 工作温度 | -40C to +85C (Industrial) | -40C to +85C (industrial) |
| Program Memory Type | Flash (read-while-write) | — |
| Series | AVR ATmega | AVR ATmega ATMEGA649 |
| RoHS 状态 | Compliant (Green package) | — |
| Core Performance | Up to 16 MIPS at 16 MHz (single-cycle instructions) | — |
| Flash Program Memory | — | 64KB (32K x 16) |
| Internal SRAM | — | 4KB |
| 最大时钟频率 | — | 8 MHz |
| Operating Voltage Range | — | 1.8 V to 5.5 V |
| LCD Controller | — | Segment LCD driver (up to 4x25 / 8x25 segments) |
| ADC Resolution | — | 10-bit |
| ADC Channels | — | 8 channels |
| Communication Interfaces | — | USART, SPI, TWI (I2C) |
| Timers | — | 2 x 8-bit, 1 x 16-bit with PWM |
| JTAG | — | IEEE 1149.1 boundary scan + on-chip debug |
| In-System Programming (ISP) | — | Yes, self-programming Flash |
| Instructions | — | 130 instructions, most single-cycle |