ATMEGA161-8PI Atmel, ATMEGA161-8PI Datasheet - Page 24

• Manufacturer Part Number: ATMEGA161-8PI
• Description: IC AVR MCU 16K 8MHZ IND 40-DIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA161-8PI

• 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: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -
• Other names: ATMEGA1618PI

24
ATmega161(L)
When the BOOTRST fuse is programmed, the most typical and general program setup
for the Reset and Interrupt Vector addresses are:
$01a
$01c
$01e
$020
$022
$024
$026
$028
;
$02a
$02b
$02c
$02d
$02e
…
Address
.org $002
$002
$004
$006
$008
$00a
$00c
$00e
$010
$012
$014
$016
$018
$01a
$01c
$01e
$020
$022
$024
$026
$028
;
$02a
$02b
$02c
$02d
$02e
;
.org $1e00
$1e00
…
MAIN:
…
Labels
MAIN:
…
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
ldi r16,high(RAMEND) ; Main program start
out SPH,r16
ldi r16,low(RAMEND)
out SPL,r16
<instr>
Code
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
ldi r16,high(RAMEND); Main program start
out SPH,r16
ldi r16,low(RAMEND)
out SPL,r16
<instr>
jmp
…
…
UART_RXC0
UART_RXC1
UART_DRE0
UART_DRE1
UART_TXC0
UART_TXC1
EE_RDY
ANA_COMP
EXT_INT0
EXT_INT1
EXT_INT2
TIM2_COMP
TIM2_OVF
TIM1_CAPT
TIM1_COMPA
TIM1_COMPB
TIM1_OVF
TIM0_COMP
TIM0_OVF
SPI_STC;
UART_RXC0
UART_RXC1
UART_DRE0
UART_DRE1
UART_TXC0
UART_TXC1
EE_RDY
ANA_COMP
RESET
…
…
xxx
xxx
; UART0 RX Complete Handler
; UART1 RX Complete Handler
; UDR0 Empty Handler
; UDR1 Empty Handler
; UART0 TX Complete Handler
; UART1 TX Complete Handler
; EEPROM Ready Handler
; Analog Comparator Handler
Comments
; Reset is located at $1e000
; IRQ0 Handler
; IRQ1 Handler
; IRQ2 Handler
; Timer2 Compare Handler
; Timer2 Overflow Handler
; Timer1 Capture Handler
; Timer1 CompareA Handler
; Timer1 CompareB Handler
; Timer1 Overflow Handler
; Timer0 Compare Handler
; Timer0 Overflow Handler
; SPI Transfer Complete Handler
; UART0 RX Complete Handler
; UART1 RX Complete Handler
; UDR0 Empty Handler
; UDR1 Empty Handler
; UART0 TX Complete Handler
; UART1 TX Complete Handler
; EEPROM Ready Handler
; Analog Comparator Handler
; Reset handler
1228D–AVR–02/07