SNAD02C

8-CHANNEL 10-BIT ADC

======== CONTENTS ========

1.

GENERAL DESCRIPTION.......................................................................................................................................3

2.

FEATURES....................................................................................................................................................................3

3.

APPLICATIONS ..........................................................................................................................................................3

4.

BLOCK DIAGRAM.....................................................................................................................................................4

5.

PIN ASSIGNMENTS ...................................................................................................................................................4

6.

FUNCTIONAL DESCRIPTIONS .............................................................................................................................5

6.1.

INTERFACE FORMAT..................................................................................................................................5

6.2.

CHANNEL SETTING....................................................................................................................................7

6.3.

CONTROL REGISTER SETTING...................................................................................................................7

6.4.

ADC READ TIMING ..................................................................................................................................8

6.5.

TIMING OF DIGITAL INPUT READING........................................................................................................9

6.6.

POWER DOWN & CHANNEL WAKE-UP..................................................................................................10

6.7.

BANDGAP REFERENCE.............................................................................................................................11

6.8.

INPUT CHANNEL PAD (CHANNEL 0~6) .................................................................................................12

6.9.

BATTERY MONITORING (CHANNEL 7 ONLY) .........................................................................................13

7.

ELECTRICAL CHARACTERISTICS ..................................................................................................................14

8.

APPLICATION CIRCUITS.....................................................................................................................................15

9.

EXAMPLE PROGRAMS .........................................................................................................................................16

9.1.

PROGRAM 1: SET CONFIGURATION OF SNAD02C...............................................................................23

9.2.

PROGRAM 2: READ ADC RESULT FROM CHANNEL 1...........................................................................23

9.3.

PROGRAM 3: READ DIGITAL INPUT DATA FROM CH4, CH3, CH2 .......................................................23

9.4.

PROGRAM 4: POWER-DOWN SNAD02C AND HOST, AND WAKE-UP ...................................................24

9.5.

PROGRAM 5: BATTERY LOW DETECTION ..............................................................................................24

10.

PAD DIAGRAM...................................................................................................................................26

Version: 1.3

July 31, 2003

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