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BR24L01AFV-W Datasheet(PDF) 9 Page - Rohm |
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BR24L01AFV-W Datasheet(HTML) 9 Page - Rohm |
9 / 26 page BR24L01A-W / BR24L01AF-W / BR24L01AFJ-W / Memory ICs BR24L01AFV-W / BR24L01AFVM-W 9/25 6) 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.7 ACKNOWLEDGE RESPONSE FROM RECEIVER) 18 9 SCL SDA SDA START CONDITION (START BIT) Acknowledge Signal (ACK Signal) (From µ−COM) OUTPUT DATA) ( µ−COM (IC OUTPUT DATA) Fig.7 ACKNOWLEDGE RESPONSE FROM RECEIVER |
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