MSM6546L データシートの表示（PDF） - Oki Electric Industry
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MSM6546L Datasheet PDF : 16 Pages
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¡ Semiconductor
MSM6546/6546L
PIN DESCRIPTIONS
Symbol
PORT0
(P0.0 to P0.3)
PORT1
(P1.1 to P1.3)
PORT2
(P2.0 to P2.3)
PORT3
(P3.0 to P3.3)
PORT4
(P4.0 to P4.3)
PORT5
(P5.0 to P5.3)
PORT6
(P6.0 to P6.3)
PORT7
(P7.0 to P7.3)
BD
RESET
TEST1
TEST2
TEST3
XT
XTB
VDD
VSS1
VSS2
VSS3
VCP
VCM
VEE
SEG0 to SEG53
Type
Description
I/O 4-bit input-output port, I/O switchable, with/without input pull-down resistor
I/O 4-bit input-output port, I/O switchable, with/without input pull-down resistor
4-bit input-output port, I/O switchable,
I/O
with/without input pull-down resistor
External interrupt
P2.0 to P2.3
port
I/O 4-bit input-output port, I/O switchable, with/without input pull-down resistor
I/O 4-bit input-output port, I/O switchable, with/without input pull-down resistor
I/O 4-bit input-output port, I/O switchable, with/without input pull-down resistor
4-bit input-output port, I/O switchable,
I/O
with/without input pull-down resistor
P6.3: SCLK
Shared with serial
P7.0: SOUT
4-bit input port
port
P7.1: SIN
I Tie to the negative pole of the battery when
P7.2: BU/D Shared with 4-bit
not used.
P7.3: CCLK up/down counter
O Buzzer output pin
I Reset pin with input pull-down resistor
Testing pins with input pull-down resistor;
I
Tie to the negative pole of the battery.
I
Connection pins for crystal oscillator
O
— 0 V power supply pin
— –1.5 V supply pin (power supply pin for –1.5 V operation)
— –3.0 V supply pin (power supply pin for –3.0 V operation)
— –4.5 V supply pin
— Connection pins for internal potential development capacitor
— Supply pin for internal logic (constant voltage circuit output pin)
O LCD driver
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