ACE24AC16C

Two-wire Serial EEPROM

VER 1.1

8

This sequential read continues as long as the micro-controller sends an acknowledge signal after

receiving a new data word. When the internal address counter reaches its maximum valid address, it

rolls over to the beginning of the memory array address. Similar to current address read, the

micro-controller can terminate the sequential read by not acknowledging the last data word received,

but sending a STOP bit afterwards instead.

(C)

Random Read

Random read is a two-steps process. The first step is to initialize the internal address counter with a

target read address usin

g a “dummy write” instruction. The second step is a current address read.

To initialize the internal address counter with a target read address, the micro-controller issues a

) set to “0”. The EEPROM

will then acknowledge. The micro-controller will then send the address word. Again the EEPROM will

acknowledge. Instead of sending a valid written data to the EEPROM, the micro-controller performs

a current address read instruction to read the data. Note that once a start bit is issued, the EEPROM

will reset the internal programming process and continue to execute the new instruction which is to

read the current address.

Figure 3: Byte Write

Figure 4: Page Write