- 您现在的位置：买卖IC网 > PDF目录80395 > M37270EF-XXXSP 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PDIP64 PDF资料下载
参数资料
| 型号： | M37270EF-XXXSP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PDIP64 |
| 封装： | 0.750 INCH, 1.78 MM PITCH, PLASTIC, SDIP-64 |
| 文件页数： | 38/97页 |
| 文件大小： | 1359K |
| 代理商： | M37270EF-XXXSP |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页当前第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页
MITSUBISHI MICROCOMPUTERS
M37270MF-XXXSP
M37270EF-XXXSP, M37270EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
40
s Bit 3: Arbitration lostV detecting flag (AL)
In the master transmission mode, when the SDA is made “L” by any
other device, arbitration is judged to have been lost, so that this bit is
set to “1.” At the same time, the TRX bit is set to “0,” so that immedi-
ately after transmission of the byte whose arbitration was lost is com-
pleted, the MST bit is set to “0.” In the case arbitration is lost during
slave address transmission, the TRX bit is set to “0” and the recep-
tion mode is set. Consequently, it becomes possible to receive and
recognize its own slave address transmitted by another master de-
vice.
VArbitration lost: The status in which communication as a master is
disabled.
s Bit 4: I2C-BUS interface interrupt request bit (PIN)
This bit generates an interrupt request signal. Each time 1-byte data
is transmitted, the state of the PIN bit changes from “1” to “0.” At the
same time, an interrupt request signal occurs to the CPU. The PIN
bit is set to “0” in synchronization with a falling of the last clock (in-
cluding the ACK clock) of an internal clock and an interrupt request
signal occurs in synchronization with a falling of the PIN bit. When
the PIN bit is “0,” the SCL is kept in the “0” state and clock generation
is disabled. Figure 42 shows an interrupt request signal generating
timing chart.
The PIN bit is set to “1” in one of the following conditions.
Executing a write instruction to the I2C data shift register (address
00F616).
When the ES0 bit is “0”
At reset
The conditions in which the PIN bit is set to “0” are shown below:
Immediately after completion of 1-byte data transmission (includ-
ing when arbitration lost is detected)
Immediately after completion of 1-byte data reception
In the slave reception mode, with ALS = “0” and immediately after
completion of slave address or general call address reception
In the slave reception mode, with ALS = “1” and immediately after
completion of address data reception
s Bit 5: Bus busy flag (BB)
This bit indicates the status of use of the bus system. When this bit is
set to “0,” this bus system is not busy and a START condition can be
generated. When this bit is set to “1,” this bus system is busy and the
occurrence of a START condition is disabled by the START condi-
tion duplication prevention function (Note).
This flag can be written by software only in the master transmission
mode. In the other modes, this bit is set to “1” by detecting a START
condition and set to “0” by detecting a STOP condition. When the
ES0 bit of the I2C control register (address 00F916) is “0” and at
reset, the BB flag is kept in the “0” state.
s Bit 6: Communication mode specification bit (transfer direction
specification bit: TRX)
This bit decides a direction of transfer for data communication. When
this bit is “0,” the reception mode is selected and the data of a trans-
mitting device is received. When the bit is “1,” the transmission mode
is selected and address data and control data are output onto the
SDA in synchronization with the clock generated on the SCL.
When the ALS bit of the I2C control register (address 00F916) is “0”
in the slave reception mode is selected, the TRX bit is set to “1”
(transmit) if the least significant bit (R/W bit) of the address data trans-
mitted by the master is “1.” When the ALS bit is “0” and the R/W bit is
“0,” the TRX bit is cleared to “0” (receive).
The TRX bit is cleared to “0” in one of the following conditions.
When arbitration lost is detected.
When a STOP condition is detected.
When occurence of a START condition is disabled by the START
condition duplication preventing function (Note).
With MST = “0” and when a START condition is detected.
With MST = “0” and when ACK non-return is detected.
At reset
s Bit 7: Communication mode specification bit (master/slave speci-
fication bit: MST)
This bit is used for master/slave specification for data communica-
tion. When this bit is “0,” the slave is specified, so that a START
condition and a STOP condition generated by the master are re-
ceived, and data communication is performed in synchronization with
the clock generated by the master. When this bit is “1,” the master is
specified and a START condition and a STOP condition are gener-
ated, and also the clocks required for data communication are gen-
erated on the SCL.
The MST bit is cleared to “0” in one of the following conditions.
Immediately after completion of 1-byte data transmission when ar-
bitration lost is detected
When a STOP condition is detected.
When occurence of a START condition is disabled by the START
condition duplication preventing function (Note).
At reset
Note: The START condition duplication prevention function disables
the occurence of a START condition, reset of bit counter and
SCL output when the following condition is satisfied:
a START condition is set by another master device.
相关PDF资料 |
PDF描述 |
|---|---|
| M37906M8C-XXXSP | 16-BIT, MROM, 20 MHz, MICROCONTROLLER, PDIP42 |
| MB96F346YSAPMC-GE2 | 16-BIT, FLASH, 56 MHz, MICROCONTROLLER, PQFP100 |
| MB96F386RSAPMC-GE2 | 16-BIT, FLASH, 56 MHz, MICROCONTROLLER, PQFP120 |
| MB96336YWAPMC-GSE2 | 16-BIT, MROM, 48 MHz, MICROCONTROLLER, PQFP144 |
| MK2049-35SITR | 49.152 MHz, OTHER CLOCK GENERATOR, PDSO20 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M37270ERSS | 功能描述:EMULATION MCU/8BIT CMOS EMULATIO RoHS:否 类别:编程器，开发系统 >> 配件 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program RoHS指令信息:IButton RoHS Compliance Plan 标准包装:1 系列:- 附件类型:USB 至 1-Wire? RJ11 适配器 适用于相关产品:1-Wire? 设备 产品目录页面:1429 (CN2011-ZH PDF) |
| M37270MF | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37270MF-100SP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37270MF-101SP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37270MF-103SP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
发布紧急采购，3分钟左右您将得到回复。