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品牌：Microchip Atmel
类别：汽车电子单片机
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品牌：Microchip Atmel
类别：汽车电子单片机
-
品牌：Microchip Atmel
类别：汽车电子单片机
-
品牌：Microchip Atmel
类别：汽车电子单片机
-
品牌：Microchip Atmel
类别：汽车电子单片机
ATMEGA644P-20AQR
- 品牌：Microchip Atmel
- 包装：*
- 无铅情况/ROHS: 有铅
- 经营商：科通芯城自营
- 描述：8-bit picoPower AVR Microcontroller, 64KB Flash, 40/44-pin
- 封装：TQFP 44A 44
- 类别：汽车电子单片机
| 参数 | 数值 |
|---|---|
| 核心处理器 | AVR |
| # of Touch Channels | 16 |
| TWI (I2C) | 1 |
| MPU / MMU | no / no |
| FPU | No |
| CPU | 8-bit AVR |
| Output Compare channels | 6 |
| Temp. Range (deg C) | -40 to 85 |
| PWM Channels | 6 |
| 32kHz RTC | Yes |
| EEPROM (Bytes) | 2048 |
| Video Decoder | No |
| ADC channels | 8 |
| Calibrated RC Oscillator | Yes |
| 系列 | AVR® ATmega |
| Graphic LCD | No |
| 芯体尺寸 | 8-Bit |
| 速度 | 20MHz |
| RAM容量 | 4K x 8 |
| 程序存储器类型 | FLASH |
| 程序存储器容量 | 64KB (64K x 8) |
| EEPROM 大小 | 2K x 8 |
| 输入/输出数 | 32 |
| 振荡器型 | Internal |
| 数据转换器 | A/D 8x10b |
| 连通性 | I²C, SPI, UART/USART |
| 工作电压 | 2.7 V ~ 5.5 V |
| 工作温度 | -40°C ~ 125°C |
| 周边设备 | Brown-out Detect/Reset, POR, PWM, WDT |
| Timers | 3 |
| USB Speed | No |
| Flash (Kbytes) | 64 Kbytes |
| DAC Channels | 0 |
| USB Interface | No |
| NAND Interface | No |
| Temp. Sensor | No |
| ADC Speed (ksps) | 15 |
| External Bus Interface | 0 |
| Input Capture Channels | 1 |
| Resistive Touch Screen | No |
| SPI | 3 |
| Ext Interrupts | 32 |
| Self Program Memory | YES |
| picoPower | Yes |
| Max I/O Pins | 32 |
| Max. Operating Frequency | 20 MHz |
| I/O Supply Class | 1.8 to 5.5 |
| ADC Resolution (bits) | 10 |
| DRAM Memory | No |
| SRAM (Kbytes) | 4 |
| DAC Resolution (bits) | 0 |
| UART | 2 |
| Crypto Engine | No |
| Hardware QTouch Acquisition | No |
| Pin Count | 44 |
| Operating Voltage (Vcc) | 1.8 to 5.5 |
| Analog Comparators | 1 |
| Camera Interface | No |
Mature product; not recommended for new designs. Replaced by ATmega644PA.
