TC7129_06 Datasheet, PDF (6/28 Pages) Microchip Technology – 4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers

TC7129
TABLE 2-1: PIN FUNCTION TABLE (CONTINUED)
Pin No.
Pin No.
Pin No.
40-Pin PDIP 44-Pin PQFP 44-Pin PLCC
Symbol
Function
36
34
40
DGND
Internal ground reference for digital section. See Section 4.2.1
“±5V Power Supply”.
37
35
41
RANGE
3 μA pull-down for 200 mV scale. Pulled high externally for 2V
scale.
38
36
42
39
37
43
40
38
44
DP₂
DP₁
OSC2
Internal 3 μA pull-down. When high, decimal point 2 will be on.
Internal 3 μA pull-down. When high, decimal point 1 will be on.
Output of first clock inverter. Input of second clock inverter.
—
6,17, 28, 39 12, 23, 34, 1
NC
No connection.
DS21459D-page 6
© 2006 Microchip Technology Inc.