¡ Semiconductor
ML63187/63189B
APPLICATION CIRCUITS (ML63187)
•Crystal oscillation is selected as low-speed
oscillation.
•RC oscillation is selected as high-speed
oscillation.
LCD
•Ports are powered from external memory
power source.
•Cv is an IC power supply bypass capacitor.
•Values of Ca, Cb, Cc, Cd, Ce, Cl, Cb12, C12,
Ch, and CG, are for reference only.
Crystal
32.768 kHz
COM1-16
SEG0-63
XT0
OSC0
OSC1
ROSH
CG
5 to
25 pF
1.5 V
XT1
VDDH
Ch
1.0 mF
PE.3
PE.2
PE.1
PE.0
VDD
Cv 0.1 mF
CB1
PB.3
PB.2
PB.1
PB.0
Cb12
Cl
1.0 mF
0.1 mF
CB2
VDDL
Ce
Cd
Cc
Cb
Ca
0.1 mF
0.1 mF
0.1 mF
0.1 mF
0.1 mF
VDD5
VDD4
VDD3
VDD2
ML63187
VDD1
C1
C12
0.1 mF
C2
Push SW
RESET
TST1
TST2
MD
VDDI
VDD
Buzzer
MDB
VSS
Note:
V
DDI
is the power supply pin for the input-output ports.
Be sure to connect the V
pin either to the positive power supply pin (V ) of this
DD
DDI
device or to the positive power supply pin of the external memory.
Application Circuit Example with Power Supply Backup
31/35
OKI [ OKI ELECTRONIC COMPONETS ]
