The ATMEGA16HVA-4TU is a 8-bit Battery Management Microcontroller for 1-cell and 2-cell Li-ion applications that require high security and authentication, accurate monitoring and high utilization of the cell energy. The microcontroller includes 16kB self-programming flash program memory, 512byte SRAM, 256byte 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 debug Wire interface for on-chip debug. The device features autonomous battery protection during charging and discharging and supports very accurate accumulated current measurements using a 18-bit ADC with a resolution of 0.84µV. It also supports up to 4MIPS throughput at 4MHz. The device operates between 1.8 to 9V.
Advanced RISC architecture
DebugWIRE on-chip debug system
In-system programmable via SPI ports
Power-on reset
On-chip voltage regulator with short-circuit monitoring interface
External and internal interrupt sources
Sleep modes - Idle, ADC noise reduction, power-save and power-off
One or two cells in series
Over-current protection (charge and discharge)
Short-circuit protection (discharge)
High voltage outputs to drive N-channel charge/discharge FETs
Two configurable 8 or 16-bit timers with separate prescaler, optional IC, CTC
SPI-serial programmable interface
12-bit voltage ADC, four external and one internal ADC inputs
High resolution coulomb counter ADC for current measurements
