General Description

The FS98O12 is a 8-bit high performance and cost-efficient microcontroller, 12-channel 14-bit sigma-delta ADC, and 24-bit general purpose I/O port. The device is suited for use in low power measurement and control applications such as: NiMH charger…etc.



High Performance RISC CPU • 8-bit single chip microcontroller(MCU). • Embedded 4k x 16 bits program memory with one-time programmable (OTP) ROM. • 256-byte data memory (SRAM). • Only 37 single word instructions to learn • 6-level memory stacks. 1.2 Peripheral Features • 24-bit bi-directional I/O port. • Charger current control. • I2C serial I/O port (slave mode only). • 12-channel 14-bit fully differential input analog to digital converter(ADC) 1.3 Analog Features • 12-channel Sigma-Delta ADC with programmable output rate and resolution. • Low noise (1μV Vpp without chopper, 0.5μV Vpp with chopper, 0.1Hz~1Hz) OPAMP with chopper controller. 1.4 Special Microcontroller Features • Embedded Low Voltage Reset (LVR) and Low Voltage Detector (LVD). • Embedded voltage regulator (3.3V regulated output). • 5 Interrupt sources (external: 2, internal: 3). • Watchdog timer (WDT). • Embedded 3.2 MHz oscillator. 1.5 CMOS Technology • Voltage operation ranges from 3.6V to 6.0V. Operation current is less than 1.5 mA; sleep mode current is about 1.5μA.



ADC measure and I/O controls. • NiMH/NiCd charger.



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