FS98O24 (OTP Type)

General Description

The FS98O24 is an 8-bit RISC-like microcontroller with 4k x 16 bits OTP program memory, auto range DMM function network, one 14-bit fully differential input analog to digital converter, two low noise amplifiers, and 4 COM x 20 SEG LCD driver.

The FS98O24 is best suitable for applications such as 3 3/4 DMM and other measurement instrument products.



An 8-bit microcontroller with 37 single word instructions
Embedded 4k x 16 bits One-Time-Programmable(OTP) program memory
256-byte data memory (SRAM)
6-level deep stacks
Embedded 1.0 MHz oscillator
External 32768Hz (RTC) or 4MHz crystal oscillator
Embedded Low Voltage Reset (LVR) and Low Voltage Detector (LVD) [3 mode: <2.3V, <3.5V, ADP2]
Dual 24-bit Programmable counter
8-bit Frequency Synthesizer
16-bit bi-directional I/O port
Buzzer output
4 x 20 LCD drivers
Two low noise amplifier
One 14-bit ADC with programmable output rate and resolution (10-bit/320Hz~14-bit/5Hz)
Two low noise (1μV Vpp without chopper, 0.5μV Vpp with chopper, 0.1Hz~1Hz) OPAMP with chopper controller
7 Interrupt sources (external: 3, internal: 4)
Embedded charge pump (Voltage Doubler) and voltage regulator (3.6V regulated output)
Embedded bandgap voltage reference (typical 1.16V±50mV, 100ppm/ °C)
Internal silicon temperature sensor (typical 550μV±50μV/ °C)
Watchdog timer (WDT)
Package: 100-pin QFP



3 3/4 auto-range DMM
Measurement instrument
Digital meter



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