msm6577 Oki Optical Components, msm6577 Datasheet - Page 4

• Manufacturer Part Number: msm6577
• Description: Operatable 0.9v Built-in Driver 4-bit Microcontroller
• Manufacturer: Oki Optical Components

¡ Semiconductor
* 3.0 V operation ...... V
PIN DESCRIPTIONS
PORT0
(P0.0 to P0.3)
PORT1
(P1.0 to P1.3)
PORT2
(P2.0 to P2.3)
BD
RESET
TEST
XT
XTB
V
V
V
V
V
V
V
SEG0 to
SEG27
DD
SS1
SS2
SS3
CP
CM
EE
Symbol
1.5 V operation ...... V
Type
I/O
—
—
—
—
—
—
O
O
O
O
I
I
I
I
• When using port as output, the pull-up or pull-down resistor is disconnected
• 4-bit input-output port
• Input or output software selectable.
• A pull-up resistor or pull-down resistor can be selected for each bit (P0.0 to P0.3)
• 4-bit input port
• Pull-up resistor or pull-down
• 4-bit output port
Buzzer output pin
• Reset input pin
• System reset generation level "H" or "L" selectable
Note : If "H" is selected, pull-down resistor is used and if "L" is selected,
Test pin (Tie to the negative pole of the battery.)*
Oscillation crystal connection pin
0V power supply pin
–1.5 V power supply pin (power supply pin for –1.5 V operation)
–3.0 V power supply pin (power supply pin for –3.0 V operation)
–4.5 V power supply pin
Capacitor connection pin for voltage converter
Internal logic power supply pin (voltage regulator output pin)
Liquid crystal display driving pins
from the pin.
(via mask option).
resistor can be selected for
PORT1 (P1.0 to P1.3)
(via mask option).
pull-up resistor is used.
SS
SS
= V
= V
SS2
SS1
Description
P1.0
P1.1
P1.2
P1.3
P2.0
P2.1 to P2.3
External
Interrupt
ports
(mask option)
Serial clock pin
Serial input pin
Serial output pin
—
—
MSM6577-xx
SCLK
SIN
SOUT
Circuit
—
—
—
—
—
—
4/22
D
G
H
A
B
C
B
E
E
F
I