msm63188a Oki Semiconductor, msm63188a Datasheet - Page 31

• Manufacturer Part Number: msm63188a
• Description: 4-bit Microcontroller With Built-in 1024-dot Matrix Lcd Drivers And Melody Circuit Msm63188a4-bit Microcontroller With Built-in 1024-dot Matrix Lcd Drivers And Melody Circuit, Operating At 0.9 V Min.
• Manufacturer: Oki Semiconductor

V
Note: V
¡ Semiconductor
APPLICATION CIRCUITS (continued)
C
DD
G
5 to 25 pF
C
Buzzer
5.0 V
v
Be sure to connect the V
device or to the positive power supply pin of the external memory.
C
C
C
C
C
C
d
b
e
c
a
DDI
l
0.1 mF
C
32.768 kHz
12
Crystal
is the power supply pin for the input, output, and input-output ports.
Push SW
Application Circuit Example with No Power Supply Backup
Open
0.1 mF
0.1 mF
0.1 mF
0.1 mF
0.1 mF
0.1 mF
Open
0.1 mF
XT0
XT1
V
V
CB1
CB2
V
V
V
V
V
V
C1
C2
RESET
TST1
TST2
MD
MDB
V
DDH
DD
DDL
DD5
DD4
DD3
DD2
DD1
SS
COM1-16
MSM63188A
DDI
pin either to the positive power supply pin (V
LCD
SEG0-63
P9, PA
OSC0
OSC1
P4-7
P3.3
P3.2
P3.1
P3.0
P2.3
P2.2
P2.1
P2.0
P1.3
P1.2
P1.1
P1.0
P0.3
P0.2
P0.1
P0.0
P8.0
P8.1
V
DDI
•Ceramic oscillation is selected as high-speed
•Ports, external memory, and IC share their
•C
•Values of C
oscillation.
power supply.
C
L0
v
is an IC power supply bypass capacitor.
, and C
L1
C
C
A15-0
D7-0
RD
WR
30 pF
a
L0
L1
, C
are for reference only.
30 pF
b
(64K ¥ 8 bits)
, C
V
Memory
V
External
c
DD
, C
SS
d
Ceramic
Resonator
(Example: 1 MHz)
, C
e
, C
MSM63188A
l
, C
DD
SW Matrix
(8 ¥ 8)
12
, C
) of this
G
31/32
V
,
DD