TC850
TABLE 2-1:
Pin Number
(40-Pin
PDIP/CERDIP)
33
34
35
36
37
38
39
40
PIN FUNCTION TABLE (CONTINUED)
Pin Number
(44-Pin PLCC)
37
38
39
40
41
42
43
44
Symbol
REF
2
+
C
REF2
+
C
REF2
–
REF–
C
REF1
–
C
REF1
+
REF
1
+
V
DD
Description
Positive input for reference voltage V
REF2
. (V
REF2
= V
REF1
/64)
Positive connection for V
REF2
reference capacitor.
Negative connection for V
REF2
reference capacitor.
Negative input for reference voltages.
Negative connection for V
REF1
reference capacitor.
Positive connection for V
REF1
reference capacitor.
Positive input for V
REF1
.
Positive power supply connection, typically +5V.
Note 1:
This pin incorporates a pull-down resistor to DGND.
2:
This pin incorporates a pull-up resistor to V
DD
.
3:
Pins 1, 23 and 34 (44-PLCC) package are NC “No Internal connection.
2002 Microchip Technology Inc.
DS21479B-page 7
©
MICROCHIP [ MICROCHIP TECHNOLOGY ]
