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BR34L02FV-W View Datasheet(PDF) - ROHM Semiconductor

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BR34L02FV-W Datasheet PDF : 25 Pages
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BR34L02FV-W
7) Acknowledge
Acknowledge is a software convention used to indicate successful data transfers.
The Transmitter device will release the bus after transmitting eight bits.
(When inputting the slave address in the write or read operation, transmitter is µ-COM. When outputting the data in
the read operation, it is this device.)
During the ninth clock cycle, the receiver will pull the SDA line LOW to acknowledge that the eight bits of data has
been received.
(When inputting the slave address in the write or read operation, receiver is this device. When outputting the data in
the read operation, it is µ-COM.)
The device will respond with an Acknowledge after recognition of a START condition and its slave address (8bit).
In the WRITE mode, the device will respond with an Acknowledge, after the receipt of each subsequent 8-bit word
(word address and write data).
In the READ mode, the device will transmit eight bit of data, release the SDA line, and monitor the line for an
Acknowledge.
If an Acknowledge is detected, and no STOP condition is generated by the master, the device will continue to
transmit the data.
If an Acknowledge is not detected, the device will terminate further data transmissions and await a STOP condition
before returning to the standby mode.
(See Fig.11 ACKNOWLEDGE RESPONSE FROM RECEIVER)
START CONDITION
(START BIT)
SCL
(From µ−COM)
1
SDA
(µ−COM
OUTPUT DATA)
SDA
(IC OUTPUT DATA)
8
9
Acknowledge Signal
(ACK Signal)
Fig.11 ACKNOWLEDGE RESPONSE FROM RECEIVER
Rev.A
9/24
 

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