ATMEGA8L-8PU Atmel, ATMEGA8L-8PU Datasheet - Page 300

• Manufacturer Part Number: ATMEGA8L-8PU
• Description: IC AVR MCU 8K 8MHZ 3V 28DIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA8L-8PU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 8KB (4K 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
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-DIP (0.300", 7.62mm)
• Cpu Family: ATmega
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 8MHz
• Interface Type: SPI/TWI/USART
• Total Internal Ram Size: 1KB
• # I/os (max): 23
• Number Of Timers - General Purpose: 3
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 6-chx10-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Through Hole
• Pin Count: 28
• Package Type: PDIP
• Processor Series: ATMEGA8x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 23
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Minimum Operating Temperature: - 40 C
• Controller Family/series: AVR MEGA
• No. Of I/o's: 23
• Eeprom Memory Size: 512Byte
• Ram Memory Size: 1KB
• Cpu Speed: 8MHz
• Rohs Compliant: Yes
• For Use With: ATSTK600-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFPATSTK600-DIP40 - STK600 SOCKET/ADAPTER 40-PDIP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEMATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ii
ATmega8(L)
System Control and Reset ................................................................ 35
Interrupts ............................................................................................ 44
I/O Ports.............................................................................................. 49
External Interrupts............................................................................. 64
8-bit Timer/Counter0.......................................................................... 67
Timer/Counter0 and Timer/Counter1 Prescalers ............................ 72
16-bit Timer/Counter1........................................................................ 74
8-bit Timer/Counter2 with PWM and Asynchronous Operation .. 102
Internal Voltage Reference ................................................................................. 40
Watchdog Timer ................................................................................................. 41
Timed Sequences for Changing the Configuration of the Watchdog Timer ....... 43
Interrupt Vectors in ATmega8............................................................................. 44
Introduction ......................................................................................................... 49
Ports as General Digital I/O ................................................................................ 50
Alternate Port Functions ..................................................................................... 54
Register Description for I/O Ports ....................................................................... 63
Overview............................................................................................................. 67
Timer/Counter Clock Sources............................................................................. 68
Counter Unit........................................................................................................ 68
Operation ............................................................................................................ 68
Timer/Counter Timing Diagrams......................................................................... 69
8-bit Timer/Counter Register Description ........................................................... 70
Overview............................................................................................................. 74
Accessing 16-bit Registers ................................................................................. 77
Timer/Counter Clock Sources............................................................................. 80
Counter Unit........................................................................................................ 80
Input Capture Unit............................................................................................... 81
Output Compare Units ........................................................................................ 83
Compare Match Output Unit ............................................................................... 85
Modes of Operation ............................................................................................ 86
Timer/Counter Timing Diagrams......................................................................... 93
16-bit Timer/Counter Register Description ......................................................... 95
Overview........................................................................................................... 102
Timer/Counter Clock Sources........................................................................... 103
Counter Unit...................................................................................................... 104
Output Compare Unit........................................................................................ 105
Compare Match Output Unit ............................................................................. 107
Modes of Operation .......................................................................................... 108
Timer/Counter Timing Diagrams....................................................................... 113
2486O–AVR–10/04