Datasheet
TC500/A/510/514
DS21428E-page 22 © 2008 Microchip Technology Inc.
FIGURE 9-4: TC514 To IBM
®
Compatible Printer Port.
IBM
®
Printer Port
Port
0378
Hex
+5V
10 kΩ
100 kΩ
1 μF
1 μF
1
25
2
2
3
3
4
CAP–
5
6
7
8
23
10
22
21
9
26
27
28
DGND
V
OUT
V
DD
A
B
C
REF
+
TC514
BUF
0.22
μF
10 kΩ
10 kΩ
0.22 μF
0.01 μF
0.33 μF
CH1+
Input 1
+
18
–
13
Input 2
+
17
–
12
Input 3
+
16
–
11
Input 4
+
15
–
10
CAP+
C
REF
-
V
REF
+
V
REF
-
C
AZ
C
INT
ACOM
CH1–
CH2+
CH2–
CH3+
CH3–
CH4+
CH4–
CMPTR
Analog
Mux Control Logic
A0
A1
20
19
MCP1525