The Atmel®AVR® ATmega8 is a low-power CMOS 8-bit microcontroller based on the AVR RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega8 achieves throughputs approaching 1MIPS per MHz, allowing the system designer to optimize power consumption versus processing speed. The Atmega8A is an 8-bit AVR RISC-based microcontroller from Atmel that includes 8KB ISP flash memory, 1KB SRAM, 512B EEPROM, a 7-channel/10-bit A/D converter (TQFP and QFN/MLF), and debug WIRE for on-chip debugging.
Features
- Advanced RISC Architecture
- 130 Powerful Instructions, 32 × 8 General Purpose Working Registers,
- Fully Static Operation,
- Up to 16 MIPS Throughput at 16MHz, On-chip 2-cycle Multiplier
- 23 Programmable I/O Lines
- Operating Voltages: 4.5V - 5.5V
- Power Consumption at 4Mhz, 3V, 25°C : Active: 3.6mA ;Idle Mode: 1.0mA ;Power-down Mode: 0.5µA
- Five Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, and Standby
- Internal Calibrated RC Oscillator
- External and Internal Interrupt Sources
- Programmable Serial USART
- Real-Time Counter with Separate Oscillator
- Three PWM Channels
- 8Kbytes of In-System Self-programmable Flash program memory, 512Bytes EEPROM, 1Kbyte Internal SRAM
- Data retention: 20 years at 85°C/100 years at 25°C
Specifications
| Model | ATmega8A U |
| Package/Case | PDIP-28 |
| Minimum Supply Voltage (V) | 2.7 |
| Maximum Supply Voltage (V) | 5.5 |
| Product Type | 8-bit Microcontrollers – MCU |
| Maximum Clock Frequency (MHz) | 16 |
| Data Bus Width | 8 bit |
| Interface Type | SPI, TWI, USART |
| Program Memory Size (kB) | 8 |
| Data RAM size and Type | 1KB SRAM |
| Data ROM Size and Type | 512-B EEPROM |
| No. of Timers/Counters | 3 Timer |
| Operating Temperature Range | -24°C to 84°C |
| Mounting Type | Through Hole |
| No. of I/Os | 23 |
| Country of Origin | China |
