參數(shù)資料
型號: MB90F488B
廠商: Fujitsu Limited
英文描述: 16-bit Proprietary Microcontroller
中文描述: 16位微控制器專有
文件頁數(shù): 39/120頁
文件大?。?/td> 1241K
代理商: MB90F488B
MB90480/485 Series
39
3.
Expanded I/O Serial Interface
The expanded I/O serial interface is an 8-bit
×
1-channel serial I/O interface for clock synchronized data
transfer. A selection of LSB-first or MSB-first data transfer is provided.
There are two serial I/O operation modes.
Internal shift clock mode
External shift clock mode : Data transfer is synchronized with a clock signal input from the external clock
signal pin (SCK) . In this mode the general-purpose port that shares the external
clock signal pin (SCK) can be used for transfer according to CPU instructions.
(1) Register List
: Data transfer is synchronized with the internal clock signal.
Serial mode control status register 0/1 (SMCS0, SMCS1)
Serial data register 0/1 (SDR0, SDR1)
Communication prescaler control register 0/1 (SDCR0, SDCR1)
Initial value
Address : 000027
H
00002B
H
00000010
B
Address : 000026
H
00002A
H
----0000
B
Address : 000028
H
00002C
H
XXXXXXXX
B
Address : 000029
H
00002D
H
0---0000
B
15
14
13
12
11
10
9
8
SMD1
SMD2
SMD0
SIE
SIR
BUSY
STOP
STRT
R/W
R/W
R/W
R/W
R/W
R
R/W
R/W
7
6
5
4
3
2
1
0
MODE
BD
S
S
OE
S
COE
R/W
R/W
R/W
R/W
7
6
5
4
3
2
1
0
D6
D7
D5
D4
D3
D2
D1
D0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
15
14
13
12
11
10
9
8
R/W
MD
DIV3
DIV2
DIV1
DIV0
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