參數(shù)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(shù)： 45/147頁
文件大?。?/td> 2042K
代理商： M37274EFSP
139
MITSUBISHI MICROCOMPUTERS
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.
Serial I/O Mode Register
Interrupt Input Polarity Register
Address 021216
Address 021316
b7 b6 b5 b4 b3 b2 b1 b0
Interrupt input polarity register (IP) [Address 0212 16]
B
Name
Functions
After reset
R W
Interrupt Input Polarity Register
0
0 to 2,
5
Fix these bits to “0.”
RW
INT1 polarity switch bit
(INT1POL)
0
3
0 : Positive polarity
1 : Negative polarity
4
0 : Positive polarity
1 : Negative polarity
6
INT2 polarity switch bit
(INT2POL)
INT3 polarity switch bit
(INT3POL)
0R W
RW
0 : Positive polarity
1 : Negative polarity
00
0
0 : Positive polarity
1 : Negative polarity
7
A-D conversion INT3
interrupt source selection
bit (RE7)
RW
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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