A monitoring and protection circuit for 3-cell and 4-cell Li-ion applications that require the highest safety including safe authentication, low cost, and high utilization of the cell energy. The microcontroller includes 32KB self-programming flash program memory, 2KB SRAM, 1024-byte EEPROM, 2, 3 or 4 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 A/D converter with a resolution of 0.84µV. It also supports up to 8 MIPS throughput at 8MHz. 4-25V operation.

Key Parameters

Parameter
Value

Flash (Kbytes):

32 Kbytes

Pin Count:

44

Max. Operating Frequency:

8 MHz

CPU:

8-bit AVR

# of Touch Channels:

8

Hardware QTouch Acquisition:

No

Max I/O Pins:

17

Ext Interrupts:

15

USB Speed:

No

USB Interface:

No

 

Ordering Codes

Ordering Code Package Speed Power Supply Operational Range Comment Samples
ATMEGA32HVB-8X3 TSSOP 44X1 44 8 4-25 Industrial (D) (-25°C to 85°C) Request