參數(shù)資料
型號: MB90478PFV
元件分類: 微控制器/微處理器
英文描述: 16-BIT, MROM, 20 MHz, MICROCONTROLLER, PQFP100
封裝: PLASTIC, LQFP-100
文件頁數(shù): 50/118頁
文件大?。?/td> 1199K
代理商: MB90478PFV
MB90470 Series
37
3.
Expanded I/O Serial Interface
The expended I/O serial interface is a serial I/O interface in 8-bit
× 1 channel configuration allowing clock
synchronized data transmission.
The interface has two serial I/O operating modes.
Internal shift clock mode : Data transfer is synchronized with an internal clock.
External shift clock mode : Data transfer is synchronized with a clock input from an external pin (SCK) .
This mode allows the external clock pin (SCK) to be shared with a general
purpose port that can transfer data according to CPU instructions.
(1) Register List
Serial mode control status register (SMCS)
Serial data register (SDR)
Communication prescaler control register (SDCR0, SDCR1)
Initial value
Address :
000027H
00002BH
0 0 0 0 0 0 1 0B
Initial value
Address :
000026H
00002AH
- - - - 0 0 0 0B
Initial value
Address :
000028H
00002CH
XXXXXXXXB
Initial value
Address :
000029H
00002DH
0 - - - 0000B
15
14
13
12
11
10
9
8
SMD1
SMD2
SMD0
SIE
SIR
BUSY
STOP
STRT
(R/W)
76
5
4
3
2
1
0
MODE
BDS
SOE
SCOE
(R/W)
(
)
(
)
(
)
(
)
76
5
4
3
2
1
0
D6
D7
D5
D4
D3
D2
D1
D0
(R/W)
(
)( )( )
(R/W)
15
14
13
12
11
10
9
8
(R/W)
MD
DIV3
DIV2
DIV1
DIV0
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