ATMEGA644P Description
8-bit Atmel Microcontroller with 16K/32K/64K Bytes In-System Programmable Flash ATmega164P/V-ATmega324P/V-ATmega644P/V DATASHEET.
ATMEGA644P Key Features
- High-performance, Low-power Atmel® AVR® 8-bit Microcontroller
- Advanced RISC Architecture
- Most Single-clock Cycle Execution ̶ 32 × 8 General Purpose Working Registers ̶ Fully Static Operation ̶ Up to 20 MIPS Th
- In-System Programming by On-chip Boot Program
- True Read-While-Write Operation ̶ Programming Lock for Software Security
- 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 16-bit Timer/Counter with S
- Differential mode with selectable gain at 1×, 10× or 200× ̶ Byte-oriented Two-wire Serial Interface ̶ Two Programmable S
- Special Microcontroller Features
- I/O and Packages ̶ 32 Programmable I/O Lines ̶ 40-pin PDIP, 44-lead TQFP, 44-pad VQFN/QFN/MLF (ATmega164P/324P/644P)