ATMEGA329V-8AI vs ATMEGA329P-20AU 对比
详细并排对比 ATMEGA329V-8AI 出自 Microchip Technology 和 ATMEGA329P-20AU 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 | ATMEGA329V-8AI | ATMEGA329P-20AU |
|---|---|---|
| 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） | $4.45 | $4.71 |
| Core Architecture | 8-bit AVR RISC | AVR (8-bit RISC, Harvard) |
| CPU Speed | 8 MHz | — |
| Program Memory (Flash) | 32 KB (16K x 16) | 32 KB (16K x 16), In-System Programmable with RWW |
| SRAM | 2 KB | 2 KB (2K x 8) |
| EEPROM | 1 KB | 1 KB |
| Supply Voltage (Vcc) | 1.8 V to 5.5 V | 2.7 V to 5.5 V (10 MHz max below 4.5 V; 20 MHz requires 4.5-5.5 V) |
| General Purpose I/O | 54 lines | — |
| General Purpose Registers | 32 | — |
| LCD Controller | On-chip, supports up to 4x25 segments | — |
| ADC | 10-bit, up to 8 channels | 10-bit, up to 8 single-ended channels |
| Timers/Counters | Three flexible Timer/Counters with PWM | — |
| Serial Interfaces | USART, SPI, TWI (I2C-compatible) | — |
| Debug Interface | JTAG (IEEE 1149.1 compliant) | JTAG (IEEE 1149.1 compliant) |
| 封装 | 64-pin TQFP, 14x14 mm body, 0.5 mm pitch | 64-pin TQFP (14x14 mm, 0.8 mm pitch) |
| 安装类型 | Surface Mount | Surface Mount |
| 工作温度 | -40C to +85C (industrial) | -40C to +85C (industrial, -A suffix) |
| RoHS 状态 | Compliant | Compliant (Pb-free / Green) |
| Instruction Set | — | 131 instructions, mostly single-cycle |
| Maximum Clock Speed | — | 20 MHz |
| Throughput | — | Up to 20 MIPS at 20 MHz |
| General-Purpose I/O Pins | — | 54 |
| General-Purpose Working Registers | — | 32 |
| PWM Channels | — | 6 |
| Communication Peripherals | — | 2x USART, 1x TWI (I2C), 1x SPI (also ISP) |
| Power-Save Modes | — | Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby (picoPower) |
| QTouch Support | — | Yes (peripheral touch controller via library) |