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Pin No.
Name
24
EROUT
25
VFB
26
MIN
27
MAX
28
U/D
29
CLOCK
30
SET
31
PDB
10-7.Character generator ROM pin descriptions (HD62063B01)
Pin No.
Name
1,7~12,23
NC
2
BLD
3
VOSC
4,20
GND
5,6
OSI/OSO
13
TNL
14,19
IN1+,IN2+
15,32
VSS1,VSS2
16,21
IN1-,IN2-
17,22
OUT1,OUT2
18
TNH
24
IN
25
OUT
26,27
BZ1,2
28
INT
29,30
CEH,CEL
31
CED
33
EN
34~37
IO3~IO0
38~42
A0~A3,A15
43
WEB
44
CSB
In/Out
Status
Status
of OFF
of ON
Out
6V
5V
**
H
3.2V
**
5V
3.2V
**
5V
3.2V
In
H
5V
In
L
L
In
H
H
In
L
H
In/Out
Status
Status
of OFF
of ON
L
L
**
**
**
L
L
In
**
**
In
3V
**
3V
Power
In
L
L
H
H
In
Pulse
Pulse
Out
**
**
H
H
In
H
H
In
L
L
Power
In
H
H
Out
H
**
**
H
H
H
Out
**
**
In
L
Pulse
Out
H
Pulse
Out
L
L
Out
H
H
Out
H
Pulse
In
H
Pulse
In
L
H
In/Out
L
Pulse
In
L
Pulse
In
H
Pulse
In
H
Pulse
Description
VFB capacitor terminal
EROUT signal input
Display contrast control signal (Up/Down)
Display contrast clock signal
Display contrast data reset signal
Description
Not used
Not used (Battery voltage detection terminal)
Connected capacitor
GND terminal
VDD terminal
External clock terminal (32.768 KHz)
Not used
Connected to VDD
GND terminal
Connected to VDD
Not used
Not used
Power on key input terminal
KI0 terminal for power on
Buzzer signal
Interrupt signal for alarm clock (alarm time----"L")
RAM chip select signal
Chip enable signal of CPU
Enable signal (Buzzer off-----"L")
Data bus line (IO0~IO3)
Address bus line (A0~A3,A15)
Write signal
Chip select signal
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