ATmega644A Overview
ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P 8-bit Atmel Microcontroller with 16/32/64/128K Bytes In-System Programmable Flash DATASHEET.
ATmega644A Key Features
- High-performance, low-power 8-bit Atmel® AVR® Microcontroller
- Advanced RISC architecture
- most single-clock cycle execution ̶ 32 × 8 general purpose working registers ̶ Fully static operation ̶ Up to 20MIPS thr
- In-System Programming by On-chip Boot Program
- True Read-While-Write Operation ̶ Programming Lock for Software Security
- Atmel QTouch® library support ̶ Capacitive touch buttons, sliders and wheels ̶ QTouch and QMatrix acquisition ̶ Up to 64
- JTAG (IEEE std. 1149.1 pliant) Interface ̶ Boundary-scan Capabilities According to the JTAG Standard ̶ Extensive On-chip
- Peripheral Features ̶ Two 8-bit Timer/Counters with Separate Prescalers and pare Modes ̶ One/two 16-bit Timer/Counter wi
- Differential mode with selectable gain at 1×, 10× or 200× ̶ Byte-oriented Two-wire Serial Interface ̶ Two Programmable S
- Special Microcontroller Features ̶ Power-on Reset and Programmable Brown-out Detection ̶ Internal Calibrated RC Oscillat
