| Key | Value |
|---|---|
| Flash (kBytes): | 64 kBytes |
| Pin Count: | 44 |
| Max. Operating Freq. (MHz): | 20 MHz |
| CPU: | 8-bit AVR |
| # of Touch Channels: | 16 |
| Hardware QTouch Acquisition: | No |
| Max I/O Pins: | 32 |
| Ext Interrupts: | 32 |
| USB Speed: | No |
| USB Interface: | No |
The high-performance Atmel 8-bit AVR RISC-based microcontroller 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, a real time counter, three flexible timer/counters with compare modes and PWM, two USARTs, a byte oriented 2-wire serial interface, an 8-channel 10-bit A/D converter with optional differential input stage with programmable gain, programmable watchdog timer with internal oscillator, SPI serial port, a JTAG (IEEE 1149.1 compliant) test interface for on-chip debugging and programming, and six software selectable power saving modes. The device operates between 1.8-5.5 volts.
By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching 1 MIPS per MHz, balancing power consumption and processing speed.
| 订购码 | 封装 | 操作范围 | 载体类型 |
|---|---|---|---|
| ATMEGA644A-MU | MLF (VQFN) 44M1 44 | Industrial (A) (-40°C to 85°C) | |
| ATMEGA644A-MUR | MLF (VQFN) 44M1 44 | Industrial (A) (-40°C to 85°C) | |
| ATMEGA644A-AU | TQFP 44A 44 | Industrial (A) (-40°C to 85°C) | |
| ATMEGA644A-PU | PDIP 40P6 40 | Industrial (A) (-40°C to 85°C) | |
| ATMEGA644A-AUR | TQFP 44A 44 | Industrial (A) (-40°C to 85°C) |
