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SNAD01C

8-CHANNEL 8-BIT ADC

Sonix Technology Co., Ltd 

SNAD01C

8-CHANNEL 8-BIT ADC

6. Functional Descriptions

VDD

Host CPU

Output Port1

Output Port2

I/O port

START

CLK

DIO

START

CLK

DIO

SNAD01

VDD

AVDD

REF

VSS

AVSS

0.1uF

CH[0]

CH[1]

CH[7]

Analog/Digital

Signal

Figure-2 Interface with Host CPU

6.1. Interface Format

START

CLK

Channel Setting

HiZ

DIO

CM2 CM1 CM0 CH[7] CH[6] CH[5] CH[4] CH[3] CH[2] CH[1] CH[0] X

X

X

X

X

Port Input

Control Register Setting

HiZ

DIO

CM2 CM1 CM0

PH PL RF MB

X

X

X

X

X

X

X

X

X

Port Input

Digital Input Reading

HiZ

DIO

CM2

CM1 CM0

DI[7] DI[6] DI[5] DI[4] DI[3] DI[2] DI[1] DI[0] DI[7] DI[6] DI[5] DI[4] DI[3]

Power Down

HiZ

DIO

Port Input

CM2 CM1 CM0

Port Output

PDS PDS PDS PDS PDS PDS PDS PDS PDS PDS PDS PDS PDS

Port Input

Port Output

Figure-3 Timing Diagram of Whole Commands

Version: 1.5

5

July 31, 2003

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