TC820CLW Просмотр технического описания (PDF) - Microchip Technology

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производитель

TC820CLW

3-3/4 digit A/D converter with frequency counter and logic probe

Microchip Technology 

TC820

FIGURE 3-4:

AUTO-RANGE DECIMAL POINT SELECTION VS. FREQUENCY COUNTER INPUT

DP3

fIN

DP2

DP1

Decimal Point

0Hz - 3999Hz

4kHz - 39.99kHz

40kHz - 399.9kHz

400kHz

DP3

DP2

DP1

NONE

FIGURE 3-5:

LOGIC PROBE SIMPLIFIED SCHEMATIC

LCD

High

Low

Logic

Probe

Input

External Logic

Level Detection

and Pulse Stretching

TC820

CMOS

Logic Levels

DP0/LO

DP1/HI

VDD

LOGIC

LCD

Drivers

Disable A/D Converter

To Buzzer

NC

DS21476B-page 12

© 2002 Microchip Technology Inc.

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