ATMEGA644P-B_14 Datasheet, PDF (1/344 Pages) ATMEL Corporation – 8-bit Atmel Microcontroller with 16/32/64Kbytes In-system Programmable Flash

ATmega164P-B/ATmega324P-B/
ATmega644P-B Automotive
8-bit Atmel Microcontroller with 16/32/64Kbytes
In-system Programmable Flash
DATASHEET
Features
● High-performance, low-power Atmel^® AVR^® 8-bit microcontroller
● Advanced RISC architecture
● 131 powerful instructions – most single-clock cycle execution
● 32 × 8 general purpose working registers
● Fully static operation
● Up to 16MIPS throughput at 16MHz
● On-chip 2-cycle multiplier
● High endurance non-volatile memory segments
● 16/32/64Kbytes of in-system self-programmable flash program memory
● 512/1/2Kbytes EEPROM
● 1/2/4Kbytes internal SRAM
● Write/erase cycles: 10,000 flash/ 100,000 EEPROM
● Data retention: 20 years at 85°C/ 100 years at 25°C⁽¹⁾
● Optional boot code section with independent lock bits
● In-system programming by on-chip boot program
● True read-while-write operation
● Programming lock for software security
● QTouch^® library support
● Capacitive touch buttons, sliders and wheels
● QTouch and QMatrix acquisition
● Up to 64 sense channels
● JTAG (IEEE std. 1149.1 compliant) interface
● Boundary-scan capabilities according to the JTAG standard
● Extensive on-chip debug support
● Programming of flash, EEPROM, fuses, and lock bits through the JTAG
interface ⁽¹⁾
● Peripheral features
● Two 8-bit Timer/Counters with separate prescalers and compare modes
● One/two 16-bit Timer/Counter with separate prescaler, compare mode, and
capture mode
● Real time counter with separate oscillator
1. See Section 5. “Data Retention” on page 8 for details.
9255E-AVR-08/14