FEDL63187B-06
1Semiconductor
ML63187B/63189B
• Crystal oscillation is selected as low-speed
oscillation by mask option.
• Ceramic oscillation is selected as high-speed
oscillation by software.
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
VDD
(Example: 1 MHz)
5 to 25 pF
XT1
CL1
VDDH
PE.3
PE.2
PE.1
PE.0
30 pF
5.0 V
VDD
0.1 µF
Open
CB1
CB2
VDDL
PB.3
PB.2
PB.1
PB.0
Cv
Cl
0.1 µF
0.1 µF
0.1 µF
0.1 µF
0.1 µF
0.1 µF
Ce
Cd
Cc
Cv
Ca
VDD5
VDD4
VDD3
ML63187B
VDD2
VDD1
C1
C12
0.1 µF
C2
Push SW
RESET
TST1
TST2
VDDl
VDD
Buzzer
MD
MDB
VSS
Note:
VDDI is the power supply pin for the input-output ports.
Be sure to connect the VDDI pin either to the positive power supply pin (VDD) of this device
or to the positive power supply pin of the external memory.
Application Circuit Example with No Power Supply Backup
32/36
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