HN58X2408FPIAG Datasheet, PDF (12/21 Pages) Renesas Technology Corp – Two-wire serial interface 8k EEPROM (1-kword × 8-bit)/16k EEPROM (2-kword × 8-bit) 32k EEPROM (4-kword × 8-bit)/64k EEPROM (8-kword × 8-bit)

HN58X2408/HN58X2416/HN58X2432/HN58X2464FPIAG
Write Operations
Byte Write:
A write operation requires an 8-bit device address word with R/W = “0”. Then the EEPROM sends
acknowledgment "0" at the ninth clock cycle. After these, the 8kbit to 16kbit EEPROMs receive 8-bit
memory address word, on the other hand the 32kbit and 64kbit EEPROMs receive 2 sequence 8-bit
memory address words. Upon receipt of this memory address, the EEPROM outputs acknowledgment "0"
and receives a following 8-bit write data. After receipt of write data, the EEPROM outputs
acknowledgment "0". If the EEPROM receives a stop condition, the EEPROM enters an internally-timed
write cycle and terminates receipt of SCL, SDA inputs until completion of the write cycle. The EEPROM
returns to a standby mode after completion of the write cycle.
Byte Write Operation
8k to 16k
Start
Device
address
1010
32k to 64k
Start
Device
address
1010
Memory
address (n)
W
ACK
R/W
1st Memory
address (n)
W
ACK
R/W
Notes: 1. Don‘t care bits for 32k and 64k.
2. Don‘t care bit for 32k.
Write data (n)
ACK
ACK _Stop
2nd Memory
address (n)
Write data (n)
ACK
ACK
Stop
Rev.3.00, Dec.21.2004, page 12 of 19