TC7135CKW View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

TC7135CKW

4-1/2 digit A/D converter

Microchip Technology 

TC7135

5.0 DIGITAL SECTION

FUNCTIONAL DESCRIPTION

The major digital subsystems within the TC7135 are

illustrated in Figure 5-1, with timing relationships

shown in Figure 5-2. The multiplexed BCD output data

can be displayed on LCD or LED displays. The digital

section is best described through a discussion of the

control signals and data outputs.

Polarity

D5

MSB

From

Analog

Section

Polarity

FF

Zero

Cross

Detect

Latch

D4

Digit

D3

Drive

Multiplexer

D2

Signal

D1

LSB

Data

Output

13 B1

14 B2

15 B4

16 B8

Latch

Latch

Latch

Latch

Counters

Control Logic

24

22

25

27

28

26

DGND

Clock

In

RUN/

HOLD

Overrange Underrange

FIGURE 5-1:

Digital Section Functional Diagram.

STROBE

21

Busy

 2004 Microchip Technology Inc.

DS21460C-page 9

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