ATMEGA1284-AUR vs ATMEGA644A-AUR 对比
详细并排对比 ATMEGA1284-AUR 出自 Microchip Technology 和 ATMEGA644A-AUR 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
ATMEGA1284-AUR - 8-Bit AVR MCU 128KB Flash 20MHz | Microchip
ATMEGA1284-AUR ✓ 量产中Microchip Technology
ATMEGA644A-AUR - 8-bit AVR MCU 64KB Flash 20MHz TQFP-44 | Microchip
ATMEGA644A-AUR ✓ 量产中规格对比
| 参数 | ATMEGA1284-AUR | ATMEGA644A-AUR |
|---|---|---|
| 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） | $4.61 | $2.75 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC |
| Program Memory Size | 128 KB ISP Flash (64K x 16) | — |
| SRAM | 16 KB | 4 KB |
| EEPROM | 4 KB | 2 KB |
| 最大时钟频率 | 20 MHz | — |
| Throughput | Up to 20 MIPS at 20 MHz | — |
| Supply Voltage Range | 1.8 V to 5.5 V | — |
| Operating Voltage (Full 20 MHz) | 2.7 V to 5.5 V | — |
| General Purpose I/O Lines | 32 | — |
| General Purpose Working Registers | 32 | — |
| Instruction Set | 131 powerful instructions, most single-clock cycle | — |
| ADC | 8-channel, 10-bit successive approximation | 8-channel, 10-bit, optional differential input |
| USART Interfaces | 2 | — |
| Timer/Counters | 3 flexible timer/counters with compare modes and PWM | 3 with compare modes and PWM |
| 封装 | 44-pin TQFP (10x10 mm) | 44-TQFP (10x10 mm) |
| 安装类型 | Surface Mount | Surface Mount |
| Packaging | Tape & Reel | — |
| 工作温度 | -40C to +85C | Industrial temperature range |
| RoHS 状态 | Compliant | Compliant |
| Lifecycle Stage | Active | — |
| Max Clock Frequency | — | 20 MHz |
| Flash Memory | — | 64 KB (32K x 16), In-System Programmable, Read-While-Write |
| I/O Lines | — | 32 general purpose |
| USART | — | 2 programmable serial USARTs |
| Serial Interfaces | — | 2-wire (TWI/I2C), SPI, 2x USART |
| Real Time Counter | — | Yes (RTC) |
| 电源电压 | — | [DATA_NEEDED: supply voltage range] |
| Life Cycle Stage | — | ACTIVE |