1.1 Features

 Fully integrated battery management solution with battery capacity measurement and programmable protection capability.

 Supports 2-4 series Li-ion or Li-Polymer battery cells

 Integrated with Renesas Ultra Low Power RL78 CPU core for multi-function process

 Memory

Code flash memory: 64KB

Data flash memory (up to 100,000 erase/write cycles): 4 KB

SRAM: 4 KB

 Clock generator

High speed on-chip oscillator: up to 32 MHz

Low speed on-chip oscillator: 15 KHz

AFE on-chip oscillator: 4.194MHz

 General Purpose I/O Ports

Total: 12 pins

CMOS input/output: 6

CMOS input: 2

N-ch open drain: 2

High voltage input [VCC tolerance]: 1

High voltage output [VCC tolerance]: 1

 Serial interface

CSI (SPI): 1 channel

I2C: 1 channel

UART: 1 channel

Simplified I2C: 1 channel

 Timer

MCU 16-bit timer: 5 channels

MCU 12-bit interval timer: 1 channel

AFE timer: 2 channels

- AFE timer A: setting range: 125 ms to 64 s

- AFE timer B: setting range：30.52 us to 125 ms

 Embedded A/D converter

AFE 15-bit resolution sigma-delta A/D converter

 Current integration circuit

18-bit resolution sigma-delta A/D converter

 Impedance measurement circuit

Simultaneous measurement of battery voltage and current

 Over current detection circuit

Short circuit current detection

Charge overcurrent detection

Discharge overcurrent detection

Charge wakeup current detection

Discharge wakeup current detection

 Series regulator

3.3V CREG2

1.8V CREG1

 Charge and Discharge MOSFET control

High side Nch MOSFET drive circuit embedded

Programmable MOSFET control by 8-bit PWM

 Fuse control

FUSEOUT pin can support fuse blow function.

 Support Intel® Dynamic Battery Power Technology (Intel® DBPT) Note

 Voltage and temperature condition

Power supply voltage: VCC = 4.0 to 25 V

Operating ambient temperature: Ta = -20 to +85°C

 Package Information

32 pin plastic mold QFN

([Body] 4.0 mm x 4.0 mm, 0.4 mm pitch)