ATMEGA161L-4AI Atmel, ATMEGA161L-4AI Datasheet - Page 4

• Manufacturer Part Number: ATMEGA161L-4AI
• Description: IC AVR MCU 16K LV 4MZ IND 44TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA161L-4AI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 35
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -
• Other names: ATMEGA161L4AI

Block Diagram
4
ATmega161(L)
Figure 1. The ATmega161 Block Diagram
VCC
GND
DATA REGISTER
PROGRAMMING
INSTRUCTION
INSTRUCTION
PROGRAM
PROGRAM
REGISTER
COUNTER
CONTROL
PORTA
DECODER
FLASH
LINES
LOGIC
DATA REGISTER
PORTA DRIVERS
PORTB
PA0-PA7
PORTB DRIVERS
PB0 - PB7
REG. PORTA
DATA DIR.
REGISTERS
REG. PORTB
REGISTER
PURPOSE
GENERAL
DATA DIR.
POINTER
STATUS
STACK
SRAM
ALU
SPI
X
Y
Z
8-BIT DATA BUS
DATA REGISTER
PORTD
DATA REGISTER
PORTD DRIVERS
PORTC
MCU CONTROL
OSCILLATOR
WATCHDOG
INTERRUPT
COUNTERS
REGISTER
INTERNAL
PD0 - PD7
EEPROM
TIMER/
PORTC DRIVERS
TIMER
UARTS
UNIT
PC0-PC7
REG. PORTD
DATA DIR.
REG. PORTC
DATA DIR.
DATA REG.
OSCILLATOR
TIMING AND
PORTE
CONTROL
PORTE DRIVERS
PE0 - PE2
REG. PORTE
DATA DIR
1228D–AVR–02/07
XTAL1
XTAL2
RESET