FS98O02

Rev.1.5

3/50

Contents

1.

GENERAL DESCRIPTION ......................................................................................................................... 5

2.

FEATURES ................................................................................................................................................. 5

3.

APPLICATIONS ......................................................................................................................................... 5

4.

ORDERING INFORMATION....................................................................................................................... 6

5.

PIN CONFIGURATION ............................................................................................................................... 7

6.

PIN DESCRIPTION .................................................................................................................................... 7

7.

FUNCTIONAL BLOCK DIAGRAM ............................................................................................................. 8

8.

TYPICAL APPLICATION CIRCUIT ............................................................................................................ 9

9.

ELECTRICAL CHARACTERISTICS ........................................................................................................ 13

9.1

Absolute Maximum Ratings ....................................................................................................... 13

9.2

DC Characteristics ...................................................................................................................... 13

9.3

ADC Characteristics ................................................................................................................... 13

9.4

OPAMP Characteristics .............................................................................................................. 14

10. TYPICAL PERFORMANCE CHARACTERISTICS...................................................................................14

11. CPU CORE ............................................................................................................................................... 15

11.1

Program Memory Organization.................................................................................................. 15

11.2

Data Memory Organization......................................................................................................... 15

11.3

System Special Registers........................................................................................................... 16

11.4

Peripheral Special Registers...................................................................................................... 18

12. POWER SYSTEM..................................................................................................................................... 19

12.1

Voltage Doubler ........................................................................................................................... 19

12.2

The FS98O02A and FS98O02C Voltage Regulator ...................................................................20

12.3

The FS98O02B Voltage Regulator..............................................................................................21

12.4

Analog Bias Circuit ..................................................................................................................... 22

12.5

Analog Common Voltage Generator..........................................................................................22

12.6

Low Battery Detector .................................................................................................................. 22

12.7

LCD Bias Circuit.......................................................................................................................... 23

13. CLOCK SYSTEM ..................................................................................................................................... 24

13.1

Oscillator State ............................................................................................................................ 24

13.2

CPU Instruction Cycle ................................................................................................................ 24

13.3

ADC Sample Frequency ............................................................................................................. 24

13.4

Beeper Clock ............................................................................................................................... 24

13.5

Voltage Doubler Operation Frequency ......................................................................................25