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MSM80C154S数据手册封面

MSM80C154S Datasheet

  • MSM80C154S

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隆 Semiconductor
MSM80C154S/83C154S
I/O control register (IOCON)
MSB
7
鈥?/div>
6
T32
5
SERR
4
IZC
3
P3HZ
2
P2HZ
1
P1HZ
LSB
0
ALF
NAME
IOCON
BIT LOCATION
IOCON.0
ADDRESS
0F8H
FLAG
ALF
FUNCTION
If CPU power down mode (PD, HPD) is activated with this bit set to "1", the
outputs from ports 0, 1, 2, and 3 are switched to floating status.
When this bit is "0", ports 0, 1, 2, and 3 are in output mode.
Port 1 becomes a high impedance input port when this bit is "1".
Port 2 becomes a high impedance input port when this bit is "1".
Port 3 becomes a high impedance input port when this bit is "1".
The 10 kW pull-up resistor for ports 1, 2, and 3 is switched off when this bit
is "1", leaving only the 100 kW pull-up resistor.
Serial port reception error flag.
This flag is set to "1" if an overrun or framing error is generated when data is
received at a serial port.
The flag is reset by software.
Timer/counters 0 and 1 are connected serially to from a 32-bit timer/counter
when this bit is set to "1".
TF1 of TCON is set if a carry is generated in the 32-bit timer/counter.
Leave this bit at "0".
IOCON.1
IOCON.2
IOCON.3
IOCON.4
IOCON.5
P1HZ
P2HZ
P3HZ
IZC
SERR
IOCON.6
T32
IOCON.7
鈥?/div>
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