【Atmel汽车电子单片机】ATMEGA644P-20PQ【行情价格评价图片正品行货】

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ATMEGA644P-20PQ

参数	数值
系列	AVR® ATmega
核心处理器	AVR
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
FPU	No
DAC Resolution (bits)	0
UART	2
Crypto Engine	No
Operating Voltage (Vcc)	1.8 to 5.5
Camera Interface	No
Graphic LCD	No
Timers	3
Max. Operating Frequency	20 MHz
I/O Supply Class	1.8 to 5.5
ADC Resolution (bits)	10
# of Touch Channels	16
TWI (I2C)	1
MPU / MMU	no / no
CPU	8-bit AVR
Output Compare channels	6
Analog Comparators	1
32kHz RTC	Yes
EEPROM (Bytes)	2048
Video Decoder	No
Temp. Sensor	No
Calibrated RC Oscillator	Yes
Resistive Touch Screen	No
Temp. Range (deg C)	-40 to 85
PWM Channels	6
USB Speed	No
ADC channels	8
DRAM Memory	No
DAC Channels	0
USB Interface	No
NAND Interface	No
External Bus Interface	0
Input Capture Channels	1
SPI	3
Max I/O Pins	32
Hardware QTouch Acquisition	No
Ext Interrupts	32
Pin Count	44
Self Program Memory	YES
picoPower	Yes
Flash (Kbytes)	64 Kbytes
SRAM (Kbytes)	4
ADC Speed (ksps)	15

Mature product; not recommended for new designs. Replaced by ATmega644PA.

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