SNAD01C 데이터 시트보기 (PDF) - Sonix Technology Co., Ltd

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SNAD01C

8-CHANNEL 8-BIT ADC

Sonix Technology Co., Ltd 

SNAD01C

8-CHANNEL 8-BIT ADC

Name

Function

PH Set the pull-up resistor of the channel in digital input mode. 1:ON, 0:OFF.

PL Set the pull-down resistor of the channel in digital input mode.

“1”: ON, “0”: OFF.

RF, MB Set the reference source (from internal bandgap or “REF” pin)

RF=0, MB=1: reference voltage from “REF” pin

RF=1, MB=0: reference voltage from internal bandgap

Table-3

Note:

1. The condition of both PH=1 and PL=1 is prohibited.

2. Pull-up and pull-down resistors are not activated while the corresponding channel is set as

analog input mode.

3. Before into power down mode, the “RF” and “MB” register must set up “0”, otherwise the standby

current will more than 1uA.

6.4. ADC Read Timing

START

CLK

HiZ

DIO

tACQ

1 0 0 ID2 ID1 ID0 xx xx D7 D6 D5 D4 D3 D2 D1 D0 PDS

Port Input

Port Output

Figure-6 The timing diagram of ADC reading

Version: 1.5

8

July 31, 2003

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