ATmega8

A monitoring and protection circuit for 1-cell and 2-cell Li-ion applications that require high security and authentication, accurate monitoring, low cost, and high utilization of the cell energy. The microcontroller includes 8KB self-programming flash program memory, 512-Bytes SRAM, 256-Bytes EEPROM, 1 or 2 cells in series, over-current, high-current and short-circuit protection, 12-bit voltage A/D converter, 18-bit coulomb counter current A/D converter, and debugWire interface for on-chip debug. The device features autonomous battery protection during charging and discharging, and supports very accurate accumulated current measurements using an 18-bit ADC with a resolution of 0.84??V. It also supports up to 4 MIPS throughput at 4MHz. 1.8 - 9V operation. Parameter Name Value Program Memory Type Flash Program Memory (KB) 8 CPU Speed (MIPS) 16 RAM Bytes 1 Data EEPROM (bytes) 512 Digital Communication Peripherals 1-UART, 1-SPI, 1-I2C Capture/Compare/PWM Peripherals 11 CCP3 Comparators 1 Temperature Range (C) -40 to 85 Operating Voltage Range (V) 2.7 to 5.5 Pin Count 32 Cap Touch Channels 12