TC815CBU View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

TC815CBU

3-1/2 Digit Auto-Ranging A/D Converter with Triplex LCD Drive and Display Hold Function

Microchip Technology 

TC815

FIGURE 7-2:

AUTO-RANGE OPERATION: RESISTANCE MEASUREMENT

N = 0 if Ω

N = 1 if LOΩ

TC815

N = 0: 200.0Ω Full Scale Range

N = 1: 2,000kΩ Full Scale Range

Kth

Conversion

Remaining in Range Selected

during the Kth Conversion

Continuity

Indicator

Activate

Buzzer

Continuous

4kHz Signal

RX = (1/10N) RIN

Yes RX < 19

?

No

RX < 180

Yes

?

No

N=N–1

No

N = 0 if Ω

N =1 if LOWΩ

Yes

RX >2000

?

Yes

Display

Resistance

K=K+1

No

N=N+1

N=4

?

Yes

Over Range

RX >3000

?

No Display "1" XXX

Flash MSD

Extended Resolution

Display "1" 000

Flash MSD

Yes

Start: Power-on, Function or Measurement Option Change

DS21474B-page 16

© 2002 Microchip Technology Inc.

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