1.1 Features
◼ Common
3-series to 10-series Cell Fuel Gauge IC (FGIC)
RL78 Ultra Low Power MCU (S3 core)
◼ Memory
Code flash memory: 64KB
Data flash memory (up to 100,000 erase/write cycles): 4KB
SRAM / 4KB
◼ Clock generator
High speed on-chip oscillator: up to 32 MHz
Low speed on-chip oscillator: 15 KHz
AFE on-chip oscillator: 4.19 MHz
AFE low speed on-chip oscillator: 131.072 KHz
◼ General Purpose I/O Ports
Total: 15 pins
CMOS input/output: 6
CMOS input: 2
N-ch open drain input/output [6.5V tolerance]: 2
N-ch open drain input/output [VREG2 tolerance]: 2
High voltage input/output [VCC tolerance]: 3
◼ Serial Interface
CSI (SPI): 1 channel
I2C: 1 channel
UART: 2 channels
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 msec to 64 sec
- AFE timer B: setting range: 30.52 usec to 2 sec
◼ Embedded A/D converter
AFE 15-bit resolution delta-sigma A/D converter
◼ Current measurement circuit
AFE 18-bit resolution delta-sigma A/D converter
◼ Battery cell voltage and temperature (AN port voltage)
detection circuit
Monitoring over/under voltage and temperature by sigmadelta
A/D converter (AFE) without controlling from MCU
◼ Impedance measurement circuit
Simultaneous measurement of battery voltage and current
◼ Over current detection circuit
Short circuit: 1 filter
Discharge over current: 4 filters
Charge over current: 1 filter
Charge wakeup: 1 filter
Discharge wakeup: 1 filter
◼ Series regulator
3.3 V output (> 20mA)
◼ Charge and Discharge MOSFETs control
Low side N-ch Dual MOSFETs drive circuit embedded
Support individual FET control
◼ Ultra Low Power consumption mode
Power down mode: 1uA
Power down mode with PON timer: 2uA
Sleep mode 1: 25uA (DFET and CFET off)
Sleep mode 2: 40uA (DFET and CFET on)
In Sleep mode 2, enable all H/W protection function
◼ Additional features
Internal Cell Balancing Circuit (>10mA)
Internal Watchdog Timer (MCU)
MCU Runaway Detection Circuit (AFE)
4 Thermistor Sensor Ports with On-chip Pull-up Resistors
Integrated Hardware Diagnostics function
Load detection circuit
Random cell connection tolerant
◼ Voltage and temperature condition
Power supply voltage: VCC = 8.0 to 50V
Operating Ambient Temperature: Ta = -40°C to 85°C
◼ Package information
40pin QFN Package ([Body] 5 mm x 5 mm, 0.4 mm pitch)