ATMEGA164A-PU Atmel, ATMEGA164A-PU Datasheet - Page 65

• Manufacturer Part Number: ATMEGA164A-PU
• Description: IC MCU AVR 16K 20MHZ 40PDIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA164A-PU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• 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): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Controller Family/series: Atmega
• No. Of I/o's: 32
• Eeprom Memory Size: 512Byte
• Ram Memory Size: 1KB
• Cpu Speed: 20MHz
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

11.2.1
8272A–AVR–01/10
Moving Interrupts Between Application and Boot Space
When the BOOTRST Fuse is programmed, the Boot section size set to 8K bytes and the IVSEL
bit in the MCUCR Register is set before any interrupts are enabled, the most typical and general
program setup for the Reset and Interrupt Vector Addresses is:
The General Interrupt Control Register controls the placement of the Interrupt Vector table.
164A/164PA/324A/324PA/644A/644PA/1284/1284P
0x00004
...
0x00036
;
.org 0x1F000
0x1F000 RESET: ldi
0x1F001
0x1F002
0x1F003
0x1F004
0x1F005
Address Labels Code
;
.org 0x1F000
0x1F000
0x1F002
0x1F004
...
0x1F036
;
0x1F03E RESET: ldi
0x1F03F
0x1F040
0x1F041
0x1F042
0x1FO43
jmp
...
jmp
out
ldi
out
sei
<instr>
jmp
jmp
jmp
...
jmp
out
ldi
out
sei
<instr>
EXT_INT1
...
SPM_RDY
r16,high(RAMEND); Main program start
SPH,r16
r16,low(RAMEND)
SPL,r16
RESET
EXT_INT0
EXT_INT1
...
SPM_RDY
r16,high(RAMEND); Main program start
SPH,r16
r16,low(RAMEND)
SPL,r16
xxx
xxx
; IRQ1 Handler
;
; SPM Ready Handler
; Set Stack Pointer to top of RAM
; Enable interrupts
Comments
; Reset handler
; IRQ0 Handler
; IRQ1 Handler
;
; SPM Ready Handler
; Set Stack Pointer to top of RAM
; Enable interrupts
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