參數(shù)資料
型號(hào): M38851FB-HP
廠商: Renesas Technology Corp.
英文描述: Single 2.7-V High-Slew-Rate Rail-to-Rail Output Operational Amplifier With Shutdown 8-SOIC -40 to 125
中文描述: 單芯片8位CMOS微機(jī)
文件頁(yè)數(shù): 40/103頁(yè)
文件大?。?/td> 1580K
代理商: M38851FB-HP
40
3885 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Fig. 36 Interrupt request signal generating timing
Fig. 35 Structure of I2C status register
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 transmitting device is received. When the bit is “1”, the transmis-
sion mode is selected and address data and control data are
output onto the SDA in synchronization with the clock generated on
the SCL.
This bit is set/reset by software and hardware. About set/reset by
hardware is described below. This bit is set to “1” by hardware
when all the following conditions are satisfied:
When ALS is “0”
In the slave reception mode or the slave transmission mode
___
When the R/W bit reception is “1”
This bit is set to “0” in one of the following conditions:
When arbitration lost is detected.
When a STOP condition is detected.
When writing “1” to this bit by software is invalid 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
Bit 7: Communication mode specification bit
(master/slave specification 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 generated. Additionally, the clocks required for data communi-
cation are generated on the SCL.
This bit is set to “0” in one of the following conditions.
Immediately after completion of 1-byte data transfer when arbi-
tration lost is detected
When a STOP condition is detected.
Writing “1” to this bit by software is invalid by the START condi-
tion duplication preventing function (Note).
At reset
Note: START condition duplication preventing function
The MST, TRX, and BB bits is set to “1” at the same time after con-
firming that the BB flag is “0” in the procedure of a START condition
occurrence. However, when a START condition by another master
device occurs and the BB flag is set to “1” immediately after the con-
tents of the BB flag is confirmed, the START condition duplication
preventing function makes the writing to the MST and TRX bits in-
valid. The duplication preventing function becomes valid from the
rising of the BB flag to reception completion of slave address.
SCL
PIN
I2CIRQ
b7
MST
b0
I2C status register
(S1 : address 001416)
Last receive bit (Note)
0 : Last bit = “0”
1 : Last bit = “1”
General call detecting flag
(Note)
0 : No general call detected
1 : General call detected
Slave address comparison flag
(Note)
0 : Address disagreement
1 : Address agreement
Arbitration lost detecting flag
(Note)
0 : Not detected
1 : Detected
SCL pin low hold bit
0 : low hold
1 : release
Bus busy flag
0 : Bus free
1 : Bus busy
Communication mode
specification bits
00 : Slave receive mode
01 : Slave transmit mode
10 : Master receive mode
11 : Master transmit mode
TRX BB PIN AL AAS AD0 LRB
Note: These bit and flags can be read out but cannot
be written.
Write “0” to these bits at writing.
相關(guān)PDF資料
PDF描述
M38851M1-XXXHP Single 2.7-V High-Slew-Rate Rail-to-Rail Output Operational Amplifier With Shutdown 8-SOIC -40 to 125
M38851M2-XXXHP Dual 2.7-V High Slew Rate Rail-To-Rail Output Operational Amplifier 8-SOIC 0 to 70
M38851M3-XXXHP Dual 2.7-V High Slew Rate Rail-To-Rail Output Operational Amplifier 8-SOIC 0 to 70
M38851M4-XXXHP Dual 2.7-V High Slew Rate Rail-To-Rail Output Operational Amplifier 8-MSOP 0 to 70
M38851M8-XXXHP Dual 2.7-V High Slew Rate Rail-To-Rail Output Operational Amplifier 8-MSOP 0 to 70
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