FS91M68

Contents

1.

GENERAL DESCRIPTION ......................................................................................................................... 4

2.

FEATURES ................................................................................................................................................. 4

3.

APPLICATIONS ......................................................................................................................................... 4

4.

ORDERING INFORMATION....................................................................................................................... 4

5.

PAD ASSIGNMENT .................................................................................................................................... 5

6.

PIN DESCRIPTION .................................................................................................................................... 5

7.

FUNCTIONAL BLOCK DIAGRAM ............................................................................................................. 6

8.

TYPICAL APPLICATION CIRCUIT ............................................................................................................ 7

8.1

Digital Clinical Thermometer........................................................................................................ 7

9.

ELECTRICAL CHARACTERISTICS .......................................................................................................... 8

9.1

Absolute Maximum Ratings ......................................................................................................... 8

9.2

D.C. Characteristics ...................................................................................................................... 8

9.3

A.C. Characteristics ...................................................................................................................... 8

10. FUNCTION DESCRIPTION ........................................................................................................................ 9

10.1

CPU Core ....................................................................................................................................... 9

10.1.1 Program Memory Organization ...........................................................................................9

10.1.2 Data Memory Organization .................................................................................................9

10.2

Low Battery Detection ................................................................................................................ 11

10.3

I/O Port ......................................................................................................................................... 11

10.4

R2F Conversion Module ............................................................................................................. 13

10.5

LCD Driver ................................................................................................................................... 15

11. INSTRUCTION SET ................................................................................................................................. 16

11.1

Instruction Set Summary............................................................................................................ 16

12. INSTRUCTION DESCRIPTION ................................................................................................................ 17

13. REVISION HISTORY ................................................................................................................................ 24

Rev. 1.3

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