atmega164-20pu ATMEL Corporation, atmega164-20pu Datasheet - Page 4

• Manufacturer Part Number: atmega164-20pu
• Description: 8-bit Microcontroller With 16/32/64k Bytes In-system Programmable Flash - Atmel Corporation
• Manufacturer: ATMEL Corporation

Disclaimer
Overview
Block Diagram
Figure 3. Block Diagram
4
RESET
XTAL1
XTAL2
VCC
GND
ATmega164/324/644
NOTE:
The USART 1 is only
available for ATmega164/324
POR / BOD &
Supervision
Generation
Watchdog
Watchdog
Oscillator
Oscillator
Circuits /
RESET
Power
Timer
Clock
Typical values contained in this datasheet are based on simulations and characteriza-
tion of other AVR microcontrollers manufactured on the same process technology. Min
and Max values will be available after the device is characterized.
The ATmega164/324/644 is a low-power CMOS 8-bit microcontroller based on the AVR
enhanced RISC architecture. By executing powerful instructions in a single clock cycle,
the ATmega164/324/644 achieves throughputs approaching 1 MIPS per MHz allowing
the system designer to optimize power consumption versus processing speed.
PORT C (8)
EEPROM
PC7..0
JTAG
Converter
TWI
A/D
PORT A (8)
PA7..0
FLASH
Bandgap reference
Internal
CPU
SRAM
Comparator
Analog
PORT B (8)
16bit T/C 1
PORT D (8)
8bit T/C 0
8bit T/C 2
PB7..0
PD7..0
SPI
USART 0
USART 1
2593AS–AVR–06/05