Datasheet

FS98O22
Rev. 1.6 15/146
There are 5 kinds of functional blocks in the Function Block Diagram, described as table 1-3:
Table 1-3 FS98O22 main function description table
Item Sub Item Description
CPU Kernel FS98O22 CPU Core Please refer to Chapter 1.11 for detailed description
OTP Program Memory OTP: One Time Programmable
8k bytes is used for 4k line programming instructions
Data Memory FS98O22 has 256 bytes SRAM embedded in it.
(128 bytes registers, 256 general data memory)
Clock sys There are two clock sources in FS98O22. One is the
internal clock which generates 1M HZ for CPU works,
and the other is an external one which provide 32768
HZ clock signal to the chip.
Digital Function Timer Module Clock Counter for Time out interrupt and Watch dog
Timer
LCD Module Embedded 4 X 20 LCD driver
I2C Embedded Serial Port for Communication, It support
I2C protocol which is designed by Philips
PDM Similar to PWM function
Buzzer User should connect a Buzzer to the embedded buzzer
port to receive the warning or reminding signal.
Programmable Counter FS98O22 embeds Dual 16-bit Programmable Counter
which could be used to do three kinds of processes:
Counter, Pulse Width Measurement and Frequency
Measurement.
Ext. INT FS98O22 support 2 External Interrupt port
Analog Function ADC An embedded Sigma-Delta Analog to Digital Converter
which converts the analog signal of the sensor to a
digital number.
OP Amplifier FS98O22 has an embedded low noise OP amplifier for
pre-processing the signal, which is connected to the
ADC to get a better A/D resolution or amplify the signal
to fit the ADC Input range.
Power Function Power Module FS98O22 has a special power system. The power
system can supply a fixed voltage for CPU and ADC.
The input voltage of the chip can be within a certain
range and floating.
General Purpose I/O PT1 The PT1 port has 8 bits. User can define these 8 bits
for general purpose or special assignment as ADC
input.
PT2 The PT2 port has 8 bits. User can define these 8 bits
for general purpose or some special function as
External Interrupt, I2C, PDM and the Buzzer.
FORTUNE'
Properties
For Reference Only