參數(shù)資料
型號(hào)： 7560
英文描述： 7560 Group Datasheet Datasheet 1682K/JAN.14.03
中文描述： 7560組數(shù)據(jù)表數(shù)據(jù)表1682K/JAN.14.03
文件頁數(shù)： 37/90頁
文件大小： 1682K
代理商： 7560
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
7560 Group
36
Serial I/O2
Serial I/O2 can be used only for clock synchronous serial I/O.
For serial I/O2, the transmitter and the receiver must use the
same clock as a synchronous clock. When an internal clock is se-
lected as a synchronous clock, the serial I/O2 is initialized and,
transmit and receive is started by a write signal to the serial I/O2
register.
When an external clock is selected as an synchronous clock, the
serial I/O2 counter is initialized by a write signal to the serial I/O2
register, serial I/O2 becomes the state where transmission or re-
ception can be performed. Write to the serial I/O2 register while
S
CLK21
is
“
H
”
state when an external clock is selected as an syn-
chronous clock.
Either P6
2
/S
CLK21
or P6
3
/S
CLK22
pin can be selected as an output
pin of the synchronous clock. In this case, the pin that is not se-
lected as an output pin of the synchronous clock functions as a I/
O port.
[Serial I/O2 Control Register (SIO2CON)] 001D16
The serial I/O2 control register contains eight control bits for the
serial I/O2 functions. After setting to this register, write data to the
serial I/O2 register and start transmit and receive.
Fig. 33 Structure of serial I/O2 control register
Fig. 34 Block diagram of serial I/O2 function
S
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b7
Internal synchronous clock select bits
b2 b1 b0
0 0 0: f(X
IN
)/8
0 0 1: f(X
IN
)/16
0 1 0: f(X
IN
)/32
0 1 1: f(X
IN
)/64
1 0 0:
1 0 1:
1 1 0: f(X
IN
)/128
1 1 1: f(X
IN
)/256
Serial I/O2 port selection bit
0: I/O port
1: S
OUT2
,S
CLK21
/S
CLK22
signal output
P6
1
/S
OUT2
P-channel output disable bit
0: CMOS output (in output mode)
1: N-channel open-drain output
(in output mode)
Transfer direction selection bit
0: LSB first
1: MSB first
Serial I/O2 synchronous clock selection bit
0: External clock
1: Internal clock
Synchronous clock output pin selection bit
0: S
CLK21
1: S
CLK22
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