Описание
The ATmega16HVA is a monitoring and protection circuit for 1-cell and 2-cell Li-ion applications with focus on high security/authentication, accurate monitoring, low cost and high utilization of the cell energy. The device contains secure authentication features as well as autonomous battery protection during charging and discharging. The chip allows very accurate accumulated current measurements using an 18-bit ADC with a resolution of 0.84 µV. The feature set makes the ATmega16HVA a key component in any system focusing on high security, battery protection, accurate monitoring, high system utilization and low cost.
- High Performance, Low Power AVR® 8-bit Microcontroller
- Advanced RISC Architecture
- 131 Powerful Instructions – Most Single Clock Cycle Execution
- 32 x 8 General Purpose Working Registers
- Fully Static Operation
- Up to 4 MIPS Throughput at 4 MHz
- High Endurance Non-volatile Memorie segments
- 16K Bytes of In-System Self-Programmable Flash Program Memory(ATmega16HVA)
- 256 Bytes EEPROM
- 512 Bytes Internal SRAM
- Write/Erase cycles: 10,000 Flash/100,000 EEPROM
- Data Retention: 20 years at 85°C /100 years at 25°C(1)
- Programming Lock for Software Security
- Battery Management Features
- 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
- Peripheral Features
- Two configurable 8 Timers with Separate Prescaler, Optional Input Capture (IC), Compare Mode and CTC
- SPI – Serial Programmable Interface
- 12-bit Voltage ADC, Four External and One Internal ADC Inputs
- High Resolution Coulomb Counter ADC for Current Measurements
- Programmable Watchdog Timer
- Special Microcontroller Features
- debug WIRE 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
- Additional Secure Authentication Features available only under NDA
- Packages
- 36-pad LGA
- 28-lead TSOP
- Operating Voltage: 1.8 – 9V
- Maximum Withstand Voltage (High-voltage pins): 28V
- Temperature Range: – 20°C to 85°C
- Speed Grade: 1-4 MHz
