Sharp ZQ-5000 Service Manual page 2

ZQ-5000
Terminal No. Signal name
1
2 x 2
3
x3
4 x4
5 VDD
6
v c c
7
RESET
8 GND
TEST
10 Cl
11 I co
12
I
13
I
I
I
15
I
I
22
23
30
31
A l 8
50
51 VA
52
53
K014
54
K013
55
56 K012
57
58
59
60
CE7
61
CE6
62
63
CE4
64
CE3
65
66 CE2
67
68 CEO
69 OA
70
71 HA
72
73
82 KOO
R/D
83
T/D
84
85 E l 5
86
87 El3
E l 2
Input/Output
output
Ceramic oscillation output
Input
Ceramic oscillation
output CR oscillation output
Input CR oscillation input
output Display power
Power Power (+)
Input
Power
Input
Input
Input
Data bus
Input/Output Data bus
Address bus
Not used.
Not used.
Not used.
output 15 pin ER signal (Data terminal ready)
output
output ON KEY strobe signal
output KEY strobe signal
output KEY strobe signal
output KEY strobe signal
Input Interrupt input terminal (Active low)
Not used.
LCD driver slave side chip enable signal.
output
output LCD driver master side chip enable signal.
Not used.
output Internal ROM chip enable signal COOOOH-FFFFFH
Not used.
Not used.
output Internal RAM chip enable signal 1 OOOOH-1 FFFFH
Not used.
output Address latch signal
output LCD driver control signal
Not used.
Not used.
KEY strobe signal
output
KEY strobe signal
output
Input
1 Spin SD signal (receive data)
output
4pin SO signal (send data)
Input/Output
Input/Output 4pin SI signal (receive data)
output
Input
Descriptions
I
I