TC815CBU View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
TC815CBU
Microchip Technology
TC815CBU Datasheet PDF : 26 Pages
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FIGURE 5-1:
MANUAL RANGE
SELECTION: RESISTANCE
MEASUREMENTS
Manual Range
Select
Continuity
Indicator
Output 4kHz Yes
Audio
Frequency
Continuous 4kHz
Buzzer
Is
RX
<
?
19
No
Is
RX
> 3000
?
No
TC815
Over Range Indicator
Yes
Display "1" 000
"1" = > Flashing MSD
Is
RX > 2000
?
No
Display True
Reading
Yes*
Display Last
3 Digits and Flash
MSD
Extended
Resolution
Feature
*Mode also operates when Auto-Ranging Operation
is selected and 2MΩ < RX < 2.999MΩ
For resistance measurements, the buzzer signal does
not indicate an overrange condition. The buzzer is used
to indicate continuity. Continuity is defined as a resis-
tance reading less than 19 counts.
FIGURE 5-2:
MANUAL RANGE
SELECTION: CURRENT
MEASUREMENTS
Range
Select
TC815
Yes
Output 4kHz
Audio
Frequency
Over Range Indicator
Is
Yes
IX > 3000
?
No
Display
"1" 000
"1" = > Flashing MSD
Is
IX > 2000
Yes
?
No
Display True
Reading
Display Last
3 Digits and Flash
MSD
Extended
Resolution
Feature
TC815
FIGURE 5-3:
MANUAL RANGE
SELECTION: VOLTAGE
MEASUREMENTS
Range Select
Is
VX > 3000
?
No
TC815
Output Noncontinuous
4kHz Audio
Frequency
Over Range Indicator
Yes
Display
"1" 000
"1" = > Flashing MSD
Is
Yes
VX > 2000
?
No
Display True
Reading
Display Last 3 Digits
and Flash
MSD
Extended Resolution
Feature
5.1 Extended Resolution
Manual Operation
The TC815 extends resolution by 50% when operated
in the Manual Range Select mode for current, voltage,
and resistance measurements. Resolution increases to
3000 counts from 2000 counts. The extended resolu-
tion feature operates only on the 2000kΩ and 2000V
ranges during auto-range operation.
In the Extended Resolution Operating mode, readings
above 1999 are displayed with a blinking “1” most sig-
nificant digit. The blinking “1” should be interpreted as
the digit 2. The three least significant digits display data
normally.
An input overrange condition causes the most signifi-
cant digit to blink and sets the three least significant
digits to display “000.” The buzzer output is enabled for
input voltage and current signals with readings greater
than 2000 counts in both manual and auto-range
operation.
© 2002 Microchip Technology Inc.
DS21474B-page 13
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