AT30TSE004_14 Datasheet, PDF (31/47 Pages) ATMEL Corporation – Integrated Temperature Sensor with Serial EEPROM

8.2 Serial EEPROM Write Operations
The 4-Kbit Serial EEPROM within the AT30TSE004 supports single Byte Write and Page Write operations up to the
maximum page size of 16 bytes in one operation. The only difference between a Byte Write and a Page Write operation
is the amount of data bytes loaded. Regardless of whether a Byte Write or Page Write operation is performed, the
internally self-timed write cycle will take the same amount of time to write the data to the addressed memory location(s).
Temperature sensor operations can be accessed during the write cycle to read the Temperature Register or perform any
other temperature sensor function.
Caution: All Byte Write and Page Write operations should be preceded by the SPA and or RPA commands to ensure
the internal address counter is located in the desired half of the memory.
If a Byte Write or Page Write operation is attempted to a protected quadrant, then the AT30TSE004 will respond (ACK or
NACK) to the Write operation according to Table 8-2.
Table 8-2. Serial EEPROM Acknowledge Status When Writing Data or Defining Write Protection
Quadrant
Status
Write Protected
with Set RSWP
Not Protected
Instruction
Sent
Set RSWP
Clear RSWP
Byte Write or Page
Write to Protected
Quadrant
Set RSWP or
Clear RSWP
Byte Write or Page
Write
Instruction
Response
NACK
ACK
ACK
ACK
ACK
Word
Address
Sent
Don’t Care
Don’t Care
Word
Address
Response
NACK
ACK
Data Word
Sent
Don’t Care
Don’t Care
Data Word
Response
NACK
ACK
Write
Cycle
No
Yes
Word
Address
ACK
Data
NACK
No
Don’t Care
ACK
Don’t Care
ACK
Yes
Word
Address
ACK
Data
ACK
Yes
Atmel AT30TSE004 [PRELIMINARY DATASHEET] 31
8816B–DTS–12/2012