¡ Semiconductor
ML63187/63189B
APPLICATION CIRCUITS (ML63189B)
•Crystal oscillation is selected as low-speed
oscillation.
•Ceramic oscillation is selected as high-speed
oscillation.
LCD
•Ports, external memory, and IC share their
power supply.
•Cv is an IC power supply bypass capacitor.
•Values of Ca, Cb, Cc, Cd, Ce, Cl, C12, CG,
CL0, and CL1 are for reference only.
Crystal
32.768 kHz
CL0 30 pF
COM1-16
SEG0-63
XT0
OSC0
OSC1
Ceramic
Resonator
CG
(Example: 1 MHz)
5 to 25 pF
XT1
VDD
CL1
30 pF
VDDH
PE.3
PE.2
PE.1
PE.0
5.0 V
VDD
CB1
CB2
VDDL
Open
0.1 mF
Cv
PB.3
PB.2
PB.1
PB.0
Cl
Ce
Cd
Cc
Cb
Ca
0.1 mF
0.1 mF
VDD5
VDD4
VDD3
0.1 mF
0.1 mF
0.1 mF
0.1 mF
PA.3
PA.2
PA.1
PA.0
ML63189B
VDD2
VDD1
C1
P9.3
P9.2
P9.1
P9.0
C12
0.1 mF
P0.3
P0.2
P0.1
P0.0
C2
Push SW
RESET
TST1
TST2
VDDI
VDD
Buzzer
MD
MDB
VSS
Note:
V
DDI
is the power supply pin for the input and 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 No Power Supply Backup
34/35
OKI [ OKI ELECTRONIC COMPONETS ]
