—
13
—
Pin No.
Signal
I/O
Function
64,65
OSC I/O
I/O
Clock terminal (DT-26S)
67,69~71
V1 ~ 4
Voltage for LCD driver
OFF: 0[V]
ON:
V1:
0.64(Light) ~ 1.29(Dark)[V]
V2:
1.29
~ 2.56
[V]
V3:
3.99
~ 2.71
[V]
V4:
4.64
~ 3.99
[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/5.3[V]
75 ~ 171
S0 ~ 95
Out
Segment signal for display
172 ~ 199
C5 ~ 32
Out
Common signal for display
168,200
NC
-
Not used
6-2. RAM:
µ
PD43256G-101215LL (LSI 3)
A0 ~ A14 : Address input signal
IO0 ~ IO7 : Data signal (Input/Output)
WE
: Write enable signal
CS
: Chip select signal
OE
: Output enable signal
CPU (WEB)
CPU (CSRA2)
Summary of Contents for SF-4300B
Page 1: ...MAR 1994 R with price SF 4300B LX 588 SF 4300B ...
Page 3: ... 1 1 SCHEMATIC DIAGRAM 1 1 MAIN PCB ...
Page 4: ... 2 1 2 KEY MATRIX ...
Page 27: ...MA0600741A ...
