ATMEGA161-8AI Atmel, ATMEGA161-8AI Datasheet - Page 14

• Manufacturer Part Number: ATMEGA161-8AI
• Description: IC AVR MCU 16K 8MHZ IND 44-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA161-8AI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• 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): 4 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: ATMEGA1618AI

I/O Direct
Data Direct
14
ATmega161(L)
Operands are contained in registers r (Rr) and d (Rd). The result is stored in register d
(Rd).
Figure 11. I/O Direct Addressing
Operand address is contained in six bits of the instruction word. n is the destination or
Source Register Address.
Figure 12. Direct Data Addressing
A 16-bit data address is contained in the 16 LSBs of a two-word instruction. Rd/Rr spec-
ify the destination or source register.
31
15
15
OP
OP
16 LSBs
n
20 19
5
Rr/Rd
P
16
0
0
Data Space
I/O MEMORY
$0000
$FFFF
0
63
1228D–AVR–02/07