Programmable IC Chips ATMEGA8A-AU 8 Bit Microcontroller Programming
ATMEGA8A-AU In-System Programmable Flash 8-bit AVR Microcontroller with 8K
Bytes
FEATURES
Features
• High-performance, Low-power AVR® 8-bit Microcontroller
• Advanced RISC Architecture
– 130 Powerful Instructions – Most Single-clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Fully Static Operation
– Up to 16 MIPS Throughput at 16 MHz
– On-chip 2-cycle Multiplier
• High Endurance Non-volatile Memory segments – 8K Bytes of
In-System Self-programmable Flash program memory – 512 Bytes EEPROM
– 1K Byte Internal SRAM – Write/Erase Cycles: 10,000 Flash/100,000
EEPROM – Data retention: 20 years at 85°C/100 years at 25°C(1) –
Optional Boot Code Section with Independent Lock Bits
• In-System Programming by On-chip Boot Program
• True Read-While-Write Operation – Programming Lock for Software
Security
• Peripheral Features – Two 8-bit Timer/Counters with Separate
Prescaler, one Compare Mode – One 16-bit Timer/Counter with
Separate Prescaler, Compare Mode, and Capture Mode – Real Time
Counter with Separate Oscillator – Three PWM Channels – 8-channel
ADC in TQFP and QFN/MLF package
• Eight Channels 10-bit Accuracy – 6-channel ADC in PDIP package
• Six Channels 10-bit Accuracy – Byte-oriented Two-wire Serial
Interface – Programmable Serial USART – Master/Slave SPI Serial
Interface – Programmable Watchdog Timer with Separate On-chip
Oscillator – On-chip Analog Comparator
• Special Microcontroller Features – Power-on Reset and
Programmable Brown-out Detection – Internal Calibrated RC
Oscillator – External and Internal Interrupt Sources – Five Sleep
Modes: Idle, ADC Noise Reduction, Power-save, Power-down, and
Standby
• I/O and Packages – 23 Programmable I/O Lines – 28-lead PDIP,
32-lead TQFP, and 32-pad QFN/MLF
• Operating Voltages – 2.7 - 5.5V for ATmega8A
• Speed Grades – 0 - 16 MHz for ATmega8A
• Power Consumption at 4 Mhz, 3V, 25°C – Active: 3.6 mA – Idle
Mode: 1.0 mA – Power-down Mode: 0.5 µA
EEPROM Programming Time
| Symbol | Number of Calibrated RC Oscillator Cycles | Typ Programming Time |
| EEPROM Write (from CPU) | 8448 | 8.5 ms |
