ATMEL ATMEGA644-20AU 微控制器, 8位, 低功率高性能, ATmega, 20 MHz, 64 KB, 4 KB, 44 引脚, TQFP
The is a 8-bit high-performance, low-power AVR RISC-based Microcontroller Unit combines 64kB ISP flash memory with read-while-write capabilities, 2kB EEPROM, 4kB SRAM, 32 general purpose I/O lines, 32 general purpose working registers, real time counter, three flexible timer/counters with compare modes and PWM, 2 USARTs, byte oriented 2-wire serial interface, 8-channel/10-bit A/D converter with optional differential input stage with programmable gain, programmable watchdog timer with internal oscillator, SPI serial port, JTAG test interface for on-chip debugging and six software selectable power saving modes. All the 32 registers are directly connected to the Arithmetic Logic Unit, allowing two independent registers to be accessed in one single instruction executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers.
频率 20 MHz
电源电压DC 5.00 V, 5.50 V max
工作电压 1.8V ~ 5.5V
针脚数 44
时钟频率 20.0 MHz, 20.0 MHz max
RAM大小 4 KB
位数 8
FLASH内存容量 64 KB
I/O引脚数 32
存取时间 20.0 µs
内核架构 AVR
模数转换数ADC 1
输入/输出数 32 Input
工作温度Max 85 ℃
工作温度Min -40 ℃
电源电压 1.8.5.5 V
电源电压Max 5.5 V
电源电压Min 2.7 V
安装方式 Surface Mount
引脚数 44
封装 TQFP-44
长度 10 mm
宽度 10 mm
高度 1.05 mm
封装 TQFP-44
工作温度 -40℃ ~ 85℃
产品生命周期 Unknown
包装方式 Each
制造应用 Automation & Process Control, 自动化与过程控制
RoHS标准 RoHS Compliant
含铅标准 Lead Free
REACH SVHC标准 No SVHC
REACH SVHC版本 2015/06/15
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
ATMEGA644-20AU ATMEL 爱特美尔 | 当前型号 | 当前型号 |
ATMEGA644P-20AU 微芯 | 完全替代 | ATMEGA644-20AU和ATMEGA644P-20AU的区别 |
ATMEGA644PA-AU 爱特美尔 | 类似代替 | ATMEGA644-20AU和ATMEGA644PA-AU的区别 |