—
9
—
22
23
24
25
26
27
28
1
2
3
4
5
6
7
21
20
19
18
17
16
15
14
13
12
11
10
9
8
OE–
A11
A9
A8
A13
WE–
VCC
A14
A12
A7
A6
A5
A4
A3
A10
CE–
IO8
IO7
IO6
IO5
IO4
GND
IO3
IO2
IO1
A0
A1
A2
CXK58257ATM
(LSI 2)
Pin No.
Name
I/O
Description
64,65
OSC I/O
I/O
Clock terminal
67,69~71
V1 ~ 4
Voltage for LCD drive
OFF: 0 V
ON– V1: 0.64 Minimum ~ 1.29 Maximum V
V2: 1.29 Minimum ~ 2.56 Maximum V
V3: 3.99 Minimum ~ 2.71 Maximum V
V4: 4.64 Minimum ~ 3.99 Maximum V
68
NC
-
Not used
72
INTO
In
Low battery detection
INTO < 5.2 V => No power on
73
STNT
-
GND 0 V
74
VLCD
In
Power supply terminal (+5.3 V)
S0 ~ 95
Out
Segment signal for display
C5 ~ 32
Out
Common signal for display
168,200
NC
-
Not used
RAM: LSI2 and LSI3 (CXK58257)
Pin No.
Name
I/O
Description
1~10,21,23~26
A0 ~ 14
In
Address bus
11~13,15~19
IO1 ~ IO8
I/O
Data bus
14
GND
In
GND 0 V
20
CE
In
Chip select signal from LSI1
22
OE
In
0 V
27
WE
In
Write enable signal from LSI1
28
VCC
In
Power supply terminal (+ 5.3 V)
172 ~199
75 ~ 171
Summary of Contents for LX-559
Page 1: ...R SF 6300 LX 559 DEC 1994 SF 6300 with price...
Page 20: ...18 SCHEMATIC DIAGRAM Main PCB...
Page 21: ...19 Key PCB...
Page 22: ...20 Key PCB Display Side...
Page 26: ...MA0200751A...
