tc7135 Microchip Technology Inc., tc7135 Datasheet - Page 9

• Manufacturer Part Number: tc7135
• Description: 4-1/2 Digit A/d Converter
• Manufacturer: Microchip Technology Inc.

5.0
The major digital subsystems within the TC7135 are
illustrated in
shown in
can be displayed on LCD or LED displays. The digital
section is best described through a discussion of the
control signals and data outputs.
FIGURE 5-1:
© 2007 Microchip Technology Inc.
DIGITAL SECTION
FUNCTIONAL DESCRIPTION
Figure
Section
Analog
From
Cross
Detect
DGND
Zero
Figure
5-2. The multiplexed BCD output data
24
Polarity
5-1, with timing relationships
FF
Digital Section Functional Diagram.
Clock
Polarity
In
22
HOLD
RUN/
MSB
Latch
25
D5
Overrange
Control Logic
Latch
Digit
27
D4
Underrange
Multiplexer
Counters
Latch
Drive
D3
28
STROBE
Latch
Signal
D2
26
Output
Data
Latch
LSB
Busy
D1
21
TC7135
13 B1
14 B2
15 B4
16 B8
DS21460D-page 9