![background image](http://html.mh-extra.com/html/panasonic/kx-t7453/kx-t7453_service-manual_270032009.webp)
NROW7
57
output
---
CMOS
4.0mA
low
PC5O02
0.01 LED Row Drive [7]
NROW8
58
output
---
CMOS
4.0mA
low
PC5O02
0.01 LED Row Drive [8]
NROW9
59
output
---
CMOS
4.0mA
low
PC5O02
0.01 LED Row Drive [9]
IP0
27
input 12-38k
CMOS
---
high
PC5D01U 0.01 Input Port [0]
IP1
28
input 12-38k
CMOS
---
high
PC5D01U 0.01 Input Port [1]
IP2
29
input 12-38k
CMOS
---
high
PC5D01U 0.01 Input Port [2]
IP3
30
input 12-38k
CMOS
---
high
PC5D01U 0.01 Input Port [3]
OP0
23
output
CMOS
4.0mA
high
PC5O02
0.01 Output Port [0]
OP1
24
output
CMOS
4.0mA
high
PC5O02
0.01 Output Port [1]
OP2
25
output
CMOS
4.0mA
high
PC5O02
0.01 Output Port [2]
OP3
26
output
CMOS
4.0mA
high
PC5O02
0.01 Output Port [3]
CK2K
22
output
CMOS
4.0mA
high
PC5O02
0.20 2kHz Clock Output (duty
25%)
CK16M
36
output
---
CMOS
2.0mA
high
PC5O01
16.4 Master Clock Out
OSI
33
input
---
Analog
---
---
PC5X02
16.4 X'tal In (XIN)
OSO
34
output
---
Analog
---
---
PC5X02
16.4 X'tal Out (XOUT)
N.C.
32
not used
N.C.
42
not used
N.C.
60
not used
VDD1
1
vdd
Vdd (5V)
VDD2
31
vdd
Vdd (5V)
VDD3
49
vdd
Vdd (5V)
VSS1
17
vss
Vss (GND)
VSS2
35
vss
Vss (GND)
VSS3
64
vss
Vss (GND)
5.2. IC2
9
Summary of Contents for KX-T7453
Page 7: ...5 IC DATA 5 1 IC1 7 ...
Page 10: ...10 ...
Page 15: ...15 ...
Page 21: ...The reset signal is negledted 21 ...
Page 26: ...8 2 THE LCD DOES NOT OPERATE 26 ...
Page 28: ...8 5 SPEAKER PHONE TROUBLE 8 6 TONE DIAL TROUBLE 8 7 HANDSET TROUBLE 28 ...
Page 29: ...9 TERMINAL GUIDE OF ICS TRANSISTORS AND DIODES 29 ...
Page 33: ...13 ACCESSORIES AND PACKING MATERIALS 33 ...
Page 39: ... 39 ...
Page 41: ...41 ...
Page 43: ...43 ...
Page 48: ...1 5 2 6 3 7 4 8 ...
Page 49: ...9 13 10 14 11 15 12 16 ...
Page 50: ...17 21 18 22 19 23 20 24 ...
Page 51: ...33 34 35 36 25 32 ...
Page 57: ...SW301 CN301 1 2 3 ...