參數(shù)資料
型號(hào): M37151MC-XXXFP
廠商: Renesas Technology Corp.
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
中文描述: 單芯片8位CMOS微機(jī)隱蔽字幕解碼器和屏幕顯示控制器
文件頁(yè)數(shù): 31/139頁(yè)
文件大?。?/td> 1491K
代理商: M37151MC-XXXFP
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SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37151M6/M8/MA/MC/MF-XXXFP, M37151EFFP
MITSUBISHI MICROCOMPUTERS
30
Rev 1.0
8.6.1 I
2
C Data Shift Register
The I
2
C data shift register (S0 : address 00F6
16
) is an 8-bit shift
register to store receive data and write transmit data.
When transmit data is written into this register, it is transferred to the
outside from bit 7 in synchronization with the SCL clock, and each
time one-bit data is output, the data of this register are shifted one bit
to the left. When data is received, it is input to this register from bit 0
in synchronization with the SCL clock, and each time one-bit data is
input, the data of this register are shifted one bit to the left.
The I
2
C data shift register is in a write enable status only when the
ESO bit of the I
2
C control register (address 00F9
16
) is “1.” The bit
counter is reset by a write instruction to the I
2
C data shift register.
When both the ESO bit and the MST bit of the I
2
C status register
(address 00F8
16
) are “1,” the SCL is output by a write instruction to
the I
2
C data shift register. Reading data from the I
2
C data shift regis-
ter is always enabled regardless of the ESO bit value.
Note:
To write data into the I
2
C data shift register after setting the MST bit to
“0” (slave mode), keep an interval of 8 machine cycles or more.
Fig. 8.6.2 I
2
C Data Shift Register
b7 b6 b5 b4 b3 b2 b1 b0
I
2
C data shift register 1(S0) [Address 00F6
16
]
After reset
Functions
Name
B
W
R
W
R
I
2
C Data Shift Register
0
to
7
This is an 8-bit shift register to store
receive data and write transmit data.
Indeterminate
Note :
To write data into the I
2
C data shift register after setting the MST bit to
“0” (slave mode), keep an interval of 8 machine cycles or more.
D0 to D7
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