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MB90480 Datasheet(PDF) 39 Page - Fujitsu Component Limited.

Part No. MB90480
Description  16-bit Proprietary Microcontroller
Download  120 Pages
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Maker  FUJITSU [Fujitsu Component Limited.]
Homepage  http://edevice.fujitsu.com/fmd/en/index.html
Logo FUJITSU - Fujitsu Component Limited.

MB90480 Datasheet(HTML) 39 Page - Fujitsu Component Limited.

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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.
(1) Register List
• Internal shift clock mode
: Data transfer is synchronized with the internal clock signal.
• 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.
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 : 000027H
00002BH
00000010B
Address : 000026H
00002AH
----0000B
Address : 000028H
00002CH
XXXXXXXXB
Address : 000029H
00002DH
0---0000B
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
76
5
4
3
21
0
⎯⎯
MODE
BDSSOE
SCOE
R/W
R/W
R/W
R/W
⎯⎯
76
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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