ATMEGA329P-20AU vs ATMEGA325P-20AUR 对比
详细并排对比 ATMEGA329P-20AU 出自 Microchip Technology 和 ATMEGA325P-20AUR 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 | ATMEGA329P-20AU | ATMEGA325P-20AUR |
|---|---|---|
| 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） | $4.71 | $4.11 |
| Core Architecture | AVR (8-bit RISC, Harvard) | AVR 8-bit RISC |
| Instruction Set | 131 instructions, mostly single-cycle | — |
| Program Memory (Flash) | 32 KB (16K x 16), In-System Programmable with RWW | — |
| EEPROM | 1 KB | 1 KB |
| SRAM | 2 KB (2K x 8) | 2 KB |
| Maximum Clock Speed | 20 MHz | — |
| Throughput | Up to 20 MIPS at 20 MHz | Up to 20 MIPS at 20 MHz |
| Supply Voltage (Vcc) | 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 Pins | 54 | — |
| General-Purpose Working Registers | 32 | — |
| ADC | 10-bit, up to 8 single-ended channels | 8-channel, 10-bit |
| PWM Channels | 6 | — |
| Communication Peripherals | 2x USART, 1x TWI (I2C), 1x SPI (also ISP) | — |
| Debug Interface | JTAG (IEEE 1149.1 compliant) | JTAG (on-chip debug and boundary scan) |
| 封装 | 64-pin TQFP (14x14 mm, 0.8 mm pitch) | 64-TQFP (14x14 mm) |
| 工作温度 | -40C to +85C (industrial, -A suffix) | -40C to +85C (industrial) |
| 安装类型 | Surface Mount | Surface Mount |
| RoHS 状态 | Compliant (Pb-free / Green) | Compliant |
| Power-Save Modes | Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby (picoPower) | — |
| QTouch Support | Yes (peripheral touch controller via library) | — |
| CPU Speed | — | 20 MHz |
| Flash Program Memory | — | 32 KB (16K x 16) |
| Supply Voltage Range | — | 1.8 V to 5.5 V |
| Instructions | — | 131 powerful instructions, most single-cycle |
| I/O Lines | — | 54 general-purpose I/O |
| Low Power Technology | — | picoPower |
| Programming | — | In-System Programmable (ISP) Flash |