1.1 Features

◼ Fully integrated battery management solution with

battery capacity measurement and programmable

protection capability.

◼ Supports up to 10 Li-ion or Li-Polymer battery cells in

series. RAJ240090 supports 3 to 8 series cells,

RAJ240100 supports 3 to 10 series cells.

◼ Integrated with Renesas Ultra Low Power RL78 CPU core

for multi-function process.

◼ Memory

Code flash memory: 128 kB

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

SRAM: 7 kB

◼ Clock generator

High speed on-chip oscillator: up to 32 MHz

Low speed on-chip oscillator: 32 kHz

AFE high speed on-chip oscillator: 4.194 MHz

AFE low speed on-chip oscillator: 131.072 kHz

◼ General Purpose I/O Ports

Total: 31 pins

CMOS input/output: 20

CMOS input: 4

N-ch open drain input/output [6V tolerance]: 4

High voltage input/output [VCC tolerance]: 3

◼ Serial interface

CSI (SPI): 2 channels

I2C: 1 channel

UART: 2 channels

Simplified I2C: 2 channels

CAN interface (RS-CAN lite): 1 channel

◼ Timer

MCU 16-bit timer: 6 channels

MCU 12-bit interval timer: 1 channel

MCU Real time clock: 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