ATMEGA48A-PU Atmel, ATMEGA48A-PU Datasheet - Page 58

• Manufacturer Part Number: ATMEGA48A-PU
• Description: IC MCU AVR 4K FLASH 28PDIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA48A-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: 23
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-DIP (0.300", 7.62mm)
• Controller Family/series: Atmega
• No. Of I/o's: 23
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 512Byte
• Cpu Speed: 20MHz
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

11. Interrupts
11.1
Table 11-1.
8271C–AVR–08/10
Vector No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
1
2
3
4
5
6
7
8
9
Interrupt Vectors in ATmega48A and ATmega48PA
Program Address
Reset and Interrupt Vectors in ATmega48A and ATmega48PA
0x00A
0x00B
0x00C
0x00D
0x00E
0x000
0x001
0x002
0x003
0x004
0x005
0x006
0x007
0x008
0x009
0x00F
0x010
0x011
0x012
0x013
0x014
0x015
0x016
T h i s s e c t i o n d e s c r i b e s t h e s p e c i f i c s o f t h e i n t e r r u p t h a n d l i n g a s p e r f o r m e d i n
ATmega48A/48PA/88A/88PA/168A/168PA/328/328P. For a general explanation of the AVR
interrupt handling, refer to
The interrupt vectors in ATmega 48A/48PA, ATmega88A/88PA, ATmega168A/168PA and
ATmega328/328P are generally the same, with the following differences:
• Each Interrupt Vector occupies two instruction words in ATmega168A/168PA and
• ATmega 48A/48PA does not have a separate Boot Loader Section. In ATmega88A/88PA,
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
ATmega328/328P, and one instruction word in ATmega 48A/48PA and ATmega88A/88PA.
ATmega168A/168PA and ATmega328/328P, the Reset Vector is affected by the BOOTRST
fuse, and the Interrupt Vector start address is affected by the IVSEL bit in MCUCR.
Source
RESET
INT0
INT1
PCINT0
PCINT1
PCINT2
WDT
TIMER2 COMPA
TIMER2 COMPB
TIMER2 OVF
TIMER1 CAPT
TIMER1 COMPA
TIMER1 COMPB
TIMER1 OVF
TIMER0 COMPA
TIMER0 COMPB
TIMER0 OVF
SPI, STC
USART, RX
USART, UDRE
USART, TX
ADC
EE READY
”Reset and Interrupt Handling” on page
External Pin, Power-on Reset, Brown-out Reset and Watchdog System Reset
External Interrupt Request 0
External Interrupt Request 1
Pin Change Interrupt Request 0
Pin Change Interrupt Request 1
Pin Change Interrupt Request 2
Watchdog Time-out Interrupt
Timer/Counter2 Compare Match A
Timer/Counter2 Compare Match B
Timer/Counter2 Overflow
Timer/Counter1 Capture Event
Timer/Counter1 Compare Match A
Timer/Coutner1 Compare Match B
Timer/Counter1 Overflow
Timer/Counter0 Compare Match A
Timer/Counter0 Compare Match B
Timer/Counter0 Overflow
SPI Serial Transfer Complete
USART Rx Complete
USART, Data Register Empty
USART, Tx Complete
ADC Conversion Complete
EEPROM Ready
Interrupt Definition
14.
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