TC3401VQR View Datasheet(PDF) - Microchip Technology

Part Name

Description

MFG CO.

TC3401VQR

16-Bit Low Cost, Low Power Sigma-Delta A/D Converter

Microchip Technology 

FIGURE 3-5:

A/D OPERATIONAL FLOWCHART

POR

Sleep

SDAT = High

No

SCLK

Hgh to Low?

Yes

Power Up Analog,

Start CONVCLK (= 0),

Start Conversion,

Resolution = 2m

(m = 16), Latch Input

Channel Address (if applicable).

SCLK

Low to High No

transition?

Yes

SDAT = Low

CONVCLK

No

< 29?

Yes

No

SCLK

High to Low?

Yes

No

A/D

Resolution

> 210?

Yes

Reduce A/D

Resolution by 1-bit

(m = m – 1);

SDAT = High

TC3401

SDAT = Low

CONVCLK = 2m?

No

(Conversion Done?)

Yes

Power Down Analog,

Conversion Complete,

SDAT = High

SCLK

No

High to Low?

Yes

SDAT = Dm;

m=m–1

Yes

m ≥ 0?

No

SDAT = High

Internal Reset

Sleep

© 2002 Microchip Technology Inc.

DS21410B-page 9

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