ACE24LA1024A

Two-wire Serial EEPROM

VER 1.3

7

Write Operations

Byte Write:

A write operation requires two 8-bit data word address following the device address word and

acknowledgment. Upon receipt of this address, the EEPROM will again respond with a "0" and then clock

in the first 8-bit data word. Following receipt of the 8-bit data word, the EEPROM will output a "0" and the

addressing device, such as a microcontroller, must terminate the write sequence with a stop condition. At

this time the EEPROM enters an internally timed write cycle, tWR, to the nonvolatile memory. All inputs

are disabled during this write cycle and the EEPROM will not respond until the write is complete (see

Figure 5).

Figure 5. Byte Write

Page Write:

A write operation requires two 8-bit data word address following the device address word and

acknowledgment. Upon receipt of this address, the EEPROM will again respond with a "0" and then clock

in the first 8-bit data word. Following receipt of the 8-bit data word, the EEPROM will output a "0" and the

addressing device, such as a microcontroller, must terminate the write sequence with a stop condition. At

this time the EEPROM enters an internally timed write cycle, tWR, to the nonvolatile memory. All inputs

are disabled during this write cycle and the EEPROM will not respond until the write is complete (see

Figure 6).

Figure 6. Page Write