M34E04B datasheet(16/35 Pages) STMICROELECTRONICS

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Device operation

M34E04B

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DocID028428 Rev 1

Figure 7. Read mode sequences

3.7.3

Sequential read

This operation can be used after a Current address read or a Random address read. The

bus master does acknowledge the data byte output, and sends additional clock pulses so

that the device continues to output the next byte in sequence. To terminate the stream of

bytes, the bus master must not acknowledge the last byte, and must generate a Stop

condition, as shown in Figure 7.

The output data comes from consecutive addresses, with the internal address counter

automatically incremented after each byte output. After the last memory address, the

address counter ‘rolls-over’, and the device continues to output data from memory address

00h.

3.7.4

Acknowledge in read mode

For all Read commands, after each byte read, the device waits for an acknowledgment

during the 9th bit time. If the bus master does not drive Serial Data (SDA) low during this

time, the device terminates the data transfer and switches to its Standby mode.

M34E04B Fiches technique(PDF) 16 Page - STMicroelectronics