參數資料
型號： M37274EFSP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, MICROCONTROLLER, PDIP52
封裝： 0.600 INCH, 1.78 MM PITCH, SHRINK, PLASTIC, DIP-52
文件頁數： 68/147頁
文件大小： 2042K
代理商： M37274EFSP
27
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37274EFSP
PRELIMINARY
Notice:
This
is not
a final
specification.
Some
paramentic
limits
are
subject
to change.
MITSUBISHI MICROCOMPUTERS
Fig. 21. Serial I/O Mode Register
b7 b6 b5 b4 b3 b2 b1 b0
Serial I/O mode register (SM) [Address 021316]
B
Name
Functions
After reset RW
Serial I/O Mode Register
0, 1 Internal synchronous
clock selection bits
(SM0, SM1)
b1 b0
0 0: f(XIN)/4 or f(XCIN)/4
0 1: f(XIN)/16 or f(XCIN)/16
1 0: f(XIN)/32 or f(XCIN)/32
1 1: f(XIN)/64 or f(XCIN)/64
2
Synchronous clock
selection bit (SM2)
3
Port function
selection bit (SM3)
6, 7
5
Transfer direction
selection bit (SM5)
0
0: P11, P13
1: SCL1, SDA1
0: External clock
1: Internal clock
0: LSB first
1: MSB first
Fix these bits to “0.”
0
RW
0
4
Port function
selection bit (SM4)
0: P12, P14
1: SCL2, SDA2
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相關代理商/技術參數
參數描述
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