ACE24AC512E

Two-wire Serial EEPROM

VER 1.1

5

Figure 2: Timing diagram for output acknowledge

Device Addressing

The 2-wire serial bus protocol mandates an 8 bits device address word after a start bit condition to invoke

a valid read or write command. The first four most significant bits of the device address must be 1010,

which is common to all serial EEPROM devices. The next three bits are device address bits. These three

the chip will go into standby mode. However, matching may not be needed for some or all device address

the chip goes into read mode. If a “0” is detected, the device enters programming mode.