TC7129
TABLE 2-1: PIN FUNCTION TABLE (CONTINUED)
Pin No.
Pin No.
Pin No.
40-Pin PDIP 44-Pin PQFP 44-Pin PLCC
36
34
40
37
35
41
38
36
42
39
37
43
40
38
44
—
6,17, 28, 39 12, 23, 34, 1
Symbol
DGND
RANGE
DP2
DP1
OSC2
NC
Function
Internal ground reference for digital section. See Section 4.3,
±5V Power Supply.
3µA pull-down for 200mV scale. Pulled HI externally for 2V scale.
Internal 3µA pull-down. When HI, decimal point 2 will be on.
Internal 3µA pull-down. When HI, decimal point 1 will be on.
Output of first clock inverter. Input of second clock inverter.
No connection.
DS21459B-page 6
© 2002 Microchip Technology Inc.