Renesas RAJ240090A20GFP#HC2

RAJ240090A20GFP#HC2 General Description

RAJ240090/RAJ240100 are Renesas Li-ion battery fuel gauge ICs (FGICs) that consist of an MCU device and an AFE device in a single package. They are packed with a variety of battery management features and the Renesas RL78 CPU core, which has multiple low-power modes and is capable of achieving high performance in ultra-low power operation. RAJ240090/RAJ240100 fuel gauge ICs have control firmware stored in embedded flash memory to control attached embedded analog and digital circuits to perform battery voltage / current / temperature measurement, remaining capacity estimation, over current / voltage / temperature protection, and other battery management operations.

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: 128KB
  • Data flash memory (up to 100,000 erase/write cycles): 4 KB
  • SRAM: 7KB
• Clock generator
  • High-speed on-chip oscillator: up to 32 MHz
  • Low-speed on-chip oscillator:32 KHz
  • AFE high-speed on-chip oscillator: 4.194MHz
  • 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
• Embedded A/D converter
  • AFE 15-bit resolution sigma-delta A/D converter
  • MCU 8/10-bit resolution A/D converter
• Battery cell voltage and temperature (AN port voltage) detection circuit
  • Monitoring over/under voltage and temperature by Sigma-delta AD converter (AFE) without controlling from MCU
• 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 or 5.0V CREG2
  • Over 100mA output current by external Nch MOSFET
• Charge and Discharge MOSFET control
  • High-side Nch MOSFET drive circuit embedded
  • Programmable MOSFET control by 8-bit PWM
• Support RTC function
  • To connect external crystal resonator (32.768kHz) and generate internal clock.
• Voltage and temperature condition
  • Power supply voltage: VCC = 4.0 to 50V
  • Operating ambient temperature : TA= -40 to +85°C
• Package Information
  • 64-pin plastic mold LQFP ([Body] 10.0mm x 10.0mm,0.5 mm pitch)

Specifications