FS9912

Rev. 3.6

5/34

1.

General Description

The FS9912 is a high performance, low cost CMOS 8-bit single chip microcontroller with embedded a 4kx16

bits ROM, an 8-channel 14-bit fully differential input analog to digital converter, low noise amplifier, and 4x16

LCD driver.

The FS9912 is best suited for applications such as low cost, high performance digital thermometer, ear

thermometer, scale, barometer, and hygrometer.

2.

Features

8-bit microcontroller, 37 single word instructions

Embedded 4k x 16 program memory, 128-byte data memory

Voltage operation ranges from 2.4V to 3.6V, 4MHz crystal oscillator

Operation current is less than 2mA, sleep mode current is about 1μA (LVR disable).

Low voltage reset (LVR) function mask option. FS9912R_nnnV LVR enable, FS9912_nnnV LVR disable.

8-level deep hardware stacks

5 Interrupt sources (external: 2, internal: 3)

8-channel 14-bit ADC (±400mV input range, ±2LSB linearity error) with 40Hz output rate

Embedded charge pumper and voltage regulator (4V regulated output)

Embedded bandgap voltage reference (typical 1.2V±50mV, 100ppm/°C)

Low noise (1μV Vpp without chopper, 0.5μV Vpp with chopper, 0.1Hz~1Hz) OPAMPs with chopper

controller

16-bit bidirectional I/O port and buzzer output

Dual 24-bit programmable timers

4 x 16 LCD driver (3V Vpp)

Watchdog timer

3.

Applications

Ear thermometer

Thermometer/Hygrometer

Scale/ Barometer

4.

Ordering Information

Product Number

Package Type

FS9912-nnnV

Dice form, or 64-pin LQFP

FS9912R-nnnV

Dice form, or 64-pin LQFP

Note1: Code number (nnnV) is assigned for customer; ”nnn” = 001~999; ”V” means Version = A~Z.

Note2: FS9912R_nnnV means LVR enable, FS9912_nnnV means LVR disable.