TC820CPL Microchip Technology, TC820CPL Datasheet - Page 7

• Manufacturer Part Number: TC820CPL
• Description: IC ADC 3 3/4DGT LGC PROBE 40DIP
• Manufacturer: Microchip Technology

Specifications of TC820CPL

• Display Type: LCD
• Configuration: 7 Segment + 2 Annunciators
• Digits Or Characters: A/D 3.75 Digits
• Current - Supply: 1mA
• Voltage - Supply: 9V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Interface: -

TABLE 2-1:
© 2007 Microchip Technology Inc.
Pin Number
(40-PDIP)
24
25
—
—
26
27
28
29
30
31
32
33
34
35
36
—
37
38
39
40
Pin Number
(44-PQFP)
PIN FUNCTION TABLE (CONTINUED)
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
PKHOLD Peak hold input. When connected to V
Symbol
VOLTS
FREQ/
C
V
V
HOLD
OSC1
OSC2
OSC3
C
V
EOC/
COM
V
V
V
V
C
OR
REF
V
UR
REF
BUFF
REF
REF
IN
INT
IN
SS
AZ
DD
+
-
+
+
-
-
Voltage or frequency measurement select input. When unconnected, or connected
VOLTS to DGND, the A/D converter function is active. When connected to V
frequency counter function is active. This pin has an internal 5 μA pull-down to DGND.
new conversion value is greater than the preceding value. Thus, the peak reading will be
stored and held indefinitely. When unconnected, or connected to DGND, the converter
will operate normally. This pin has an internal 5 μA pull-down to DGND.
Under range output. This output will be HIGH when the digital reading is 380 counts or
less.
Over range output. This output will be HIGH when the analog signal input is greater
than full scale. The LCD will display "OL" when the input is over ranged.
Negative supply connection. Connect to negative terminal of 9V battery.
Analog circuit ground reference point. Nominally 3.3V below V
Positive connection for reference capacitor.
Negative connection for reference capacitor.
High differential reference input connection.
Low differential reference input connection.
Low analog input signal connection.
High analog input signal connection.
Buffer output. Connect to integration resistor.
Auto-zero capacitor connection.
Integrator output. Connect to integration capacitor.
Bi-directional pin. Pulses low (i.e., from V
connected to V
Crystal oscillator (input) connection.
Crystal oscillator (output) connection.
RC oscillator connection.
LCD segment drive for "a," "g," and "d" segments of MSD.
DD
, conversions will continue, but the display is not updated.
Description
DD
, the converter will only update the display if a
DD
to DGND) at the end of each conversion. If
DD
.
DS21476C-page 7
TC820
DD
, the