ATMEGA161L-4AI Atmel, ATMEGA161L-4AI Datasheet - Page 16

• 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

Data Indirect with Post-
increment
Constant Addressing Using
the LPM Instruction
Indirect Program Addressing,
IJMP and ICALL
16
ATmega161(L)
Figure 16. Data Indirect Addressing with Post-increment
The X-, Y-, or Z-register is incremented after the operation. Operand address is the con-
tents of the X-, Y-, or Z-register prior to incrementing.
Figure 17. Code Memory Constant Addressing
Constant byte address is specified by the Z-register contents. The 15 MSBs select word
address (0 - 8K), the LSB selects Low byte if cleared (LSB = 0) or High byte if set
(LSB = 1).
Figure 18. Indirect Program Memory Addressing
15
15
15
Z-REGISTER
Z-REGISTER
X, Y, OR Z - REGISTER
1 0
0
1
0
PROGRAM MEMORY
PROGRAM MEMORY
Data Space
1228D–AVR–02/07
$0000
$FFFF
$000
$1FFF
$1FFF
$000