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.
6.2.
6.3.
6.4.
6.5.
6.6.
6.7.
6.8.
6.9.
INTERFACE FORMAT..................................................................................................................................5
CHANNEL SETTING....................................................................................................................................7
CONTROL REGISTER SETTING...................................................................................................................7
ADC READ TIMING ..................................................................................................................................8
TIMING OF DIGITAL INPUT READING........................................................................................................9
POWER DOWN & CHANNEL WAKE-UP..................................................................................................10
BANDGAP REFERENCE.............................................................................................................................11
INPUT CHANNEL PAD (CHANNEL 0~6) .................................................................................................12
BATTERY MONITORING (CHANNEL 7 ONLY).........................................................................................13
7. ELECTRICAL CHARACTERISTICS ..................................................................................................................14
8. APPLICATION CIRCUITS.....................................................................................................................................15
9. EXAMPLE PROGRAMS .........................................................................................................................................16
9.1.
9.2.
9.3.
9.4.
9.5.
PROGRAM 1: SET CONFIGURATION OF SNAD02C...............................................................................23
PROGRAM 2: READ ADC RESULT FROM CHANNEL 1...........................................................................23
PROGRAM 3: READ DIGITAL INPUT DATA FROM CH4, CH3, CH2 .......................................................23
PROGRAM 4: POWER-DOWN SNAD02C AND HOST, AND WAKE-UP ...................................................24
PROGRAM 5: BATTERY LOW DETECTION ..............................................................................................24
10.
PAD DIAGRAM...................................................................................................................................26
Version: 1.3
July 31, 2003
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