MSM6351 Просмотр технического описания (PDF) - Oki Electric Industry
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производитель
MSM6351 Datasheet PDF : 17 Pages
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¡ Semiconductor
MSM6351/6351L
PIN DESCRIPTIONS
Symbol
P0.0
P0.1
P0.2
P0.3
P1.0 to P1.3
P2.0
P2.1
P2.2
P2.3
P3.0 to P3.3
P4.0 to P4.3
XTOUT
XT
XT
RESET
TEST1
TEST2
TEST3
SIN
SOUT
SCLK
BD
SEG0 to SEG61
Type
I/O
O
O
I
I
I
I
O
I/O
O
O
PORT0
Description
• 4-bit I/O port 0
The input (*) /output, the existence (*) /
absence of pull-down resistance, and the
HALT function release enable/disable (*)
condition can be selected for each bit.
PORT1 • 4-bit I/O port 1
Capture
trigger
signal
I/O Circuitry
PORT2 • 4-bit I/O port 2
PORT3 • 4-bit I/O port 3
PORT4 • 4-bit I/O port 4
The input (*) /output, External
the existence (*) / interrupt
A
absence of pull-down signal
resistance, and the
HALT function
release enable/
disable (*) condition
can be selected for
each port.
• Oscillator clock output.
The oscillator clock is output when XTF (bit 3 of port P00C) is set
E
to "1".
• Oscillator connection pins.
B
• Reset input.
This is an input with a pull-down resistor. The system is reset when
C
"1" is input.
• Test input.
D
This is an input with a pull-down resistor.
• Serial port data input.
F
• Serial port data output. When the port is not in an output state,
this pin is set at high-impedance level, except when HZOUT
G
(bit 3 of port P2XC) =1 and transmitting data.
• Serial port clock input/output.
The input/output (*) is switched by the serial port control register
H
SCNT. In the output mode, the serial clock frequency can be selected
from the demultiplied signal (1/1, 1/2 or 1/4 of the system clock).
• Melody output (buzzer drive output).
I
• LCD drive output with 1/3 bias and 1/3 duty, or 1/3 bias and 1/4 duty.
The duty can be switched by LCD control register LCDCNT.
A maximum of 177 segments can be displayed when using 1/3 duty
—
and 232 when using 1/4 duty.
* Means system reset conditions.
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