FS9952_LP2

Contents

1.

INTRODUCTION ........................................................................................................................................6

2.

FEATURES.................................................................................................................................................6

3.

USER DEVELOPMENT FUNCTION ..........................................................................................................7

4.

MEASURABLE MODES.............................................................................................................................7

5.

APPLICATION FIELD.................................................................................................................................7

6.

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

7.

PIN DIAGRAM............................................................................................................................................8

8.

PIN DESCRIPTION ....................................................................................................................................9

9.

DICE PAD LAYOUT & PAD COORDINATE .............................................................................................10

10. TECHNICAL SPECIFICATION (VDD=3V, TA=25℃)................................................................................12

11. MEASUREMENT MODE SELECT ...........................................................................................................13

11.1

Measurement Mode Select .........................................................................................................13

11.2

Self-defined Symbols and Decimal Location............................................................................13

12. KEYS DEFINITION...................................................................................................................................14

12.1

Range (Auto/Manual Measurement Switch)..............................................................................14

12.2

Manual Hold (Reading Hold) ......................................................................................................14

12.3

MAXH (Maximum Value Hold) ....................................................................................................14

12.4

BLCTR (Backlight Control).........................................................................................................14

12.5

Select (Function Switch) ............................................................................................................14

12.6

RST (Reset Key) ..........................................................................................................................14

13. OTHER FUNCTIONS................................................................................................................................15

13.1

Auto Power Off ............................................................................................................................15

13.2

Buzzer ..........................................................................................................................................15

13.3

SELECTC1 (Not connected is “1”; Connect to VSS is “0”.) ....................................................15

13.4

Backlight......................................................................................................................................15

14. LCD DISPLAY ..........................................................................................................................................16

15. APPLICATION DESCRIPTION ................................................................................................................18

15.1

Common Use Circuitry ...............................................................................................................18

15.2

Components List of Common Use Circuitry.............................................................................19

15.3

Power System..............................................................................................................................20

15.4

Oscillation Circuit .......................................................................................................................21

15.5

Mode Switch and Function Control Circuit...............................................................................21

15.6

Base Power Source.....................................................................................................................22

Rev. 1.2

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