M37280MF Datasheet, PDF (163/178 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

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MITSUBISHI MICROCOMPUTERS
M37280MF–XXXSP, M37280MK–XXXSP
M37280EKSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
Address 021316
Serial I/O Mode Register
b7 b6 b5 b4 b3 b2 b1 b0
Serial I/O mode register (SM) [Address 021316]
B
Name
0, 1 Internal synchronous
clock selection bits
(SM0, SM1)
Functions
b1 b0
0 0: f(XIN)/8 or f(XCIN)/8
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)
0: External clock
1: Internal clock
0: P11, P13
1: SCL1, SDA1
After reset R W
0 RW
0 RW
0 RW
4 Port function
selection bit (SM4)
0: P12, P14
1: SCL2, SDA2
0 RW
5 Transfer direction
selection bit (SM5)
0: LSB first
1: MSB first
0 RW
6 ^{SIN pin switch bit}
(SM6)
0: P17 is SIN pin.
1: P72 is SIN pin.
0 RW
7 ^{Nothing is assigned. This bit is a write disable bit.} 0 R —
When this bit is read out, the value is “0.”
Rev. 1.0
163