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| 型號(hào)： | M37272 |
| 廠(chǎng)商： | Mitsubishi Electric Corporation |
| 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)： | 40/131頁(yè) |
| 文件大?。?/td> | 1297K |
| 代理商： | M37272 |
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SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37272M6H/M8H/MAH/MFH
–
XXXSP/FP
M37272E8SP/FP, M37272EFSP/FP
MITSUBISHI MICROCOMPUTERS
Rev 1.0
Fig. 8.6.12 Address Data Communication Format
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Slave address
1st 7 bits
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(3) A master-transmitter transmits data to a slave-receiver with a 10-bit address
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Slave address
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Slave address
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Slave address
2nd byte
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Slave address
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From master to slave
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8.6.12 Precautions when using multi-master
I
2
C-BUS interface
(1) Read-modify-write instruction
The precautions when the raead-modify-write instruction such as SEB,
CLB etc. is executed for each register of the multi-master I
2
C-BUS
interface are described below.
I
2
C data shift register (S0)
When executing the read-modify-write instruction for this register
during transfer, data may become a value not intended.
I
2
C address register (S0D)
When the read-modify-write instruction is executed for this register
at detecting the STOP condition, data may become a value not
intended. It is because hardware changes the read/write bit (RBW)
at the above timing.
I
2
C status register (S1)
Do not execute the read-modify-write instruction for this register
because all bits of this register are changed by hardware.
I
2
C control register (S1D)
When the read-modify-write instruction is executed for this register
at detecting the START condition or at completing the byte transfer,
data may become a value not intended. Because hardware changes
the bit counter (BC0–BC2) at the above timing.
I
2
C clock control register (S2)
The read-modify-write instruction can be executed for this register.
(2) START condition generating procedure us-
ing multi-master
Procedure example (The necessary conditions of the generating
procedure are described as the following
to
).
—
LDA
SEI
BBS 5,S1,BUSBUSY
BUSFREE:
STA S0
LDM #$F0, S1
CLI
(Taking out of slave address value)
(Interrupt disabled)
(BB flag confirming and branch process)
(Writing of slave address value)
(Trigger of START condition generating)
(Interrupt enabled)
BUSBUSY:
CLI
(Interrupt enabled)
Use “STA,” “STX” or “STY” of the zero page addressing instruction
for writing the slave address value to the I
2
C data shift register.
Use “LDM” instruction for setting trigger of START condition gener-
ating.
Write the slave address value of above
and set trigger of START
condition generating of above
continuously shown the above
procedure example.
Disable interrupts during the following three process steps:
BB flag confirming
Writing of slave address value
Trigger of START condition generating
When the condition of the BB flag is bus busy, enable interrupts
immediately.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M37272M6-205SP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37272M6H | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37272M8H | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37272MAH | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37272MFH | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M37272E8FP | 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37272E8SP | 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37272EF8FP | 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37272EF8SP | 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37272EFFP | 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
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