HN58X2402-SR HITACHI [Hitachi Semiconductor], HN58X2402-SR Datasheet - Page 12

• Manufacturer Part Number: HN58X2402-SR
• Description: Two-wire serial interface 2k / 4k / 8k / 16k / 32k / 64k EEPROM
• Manufacturer: HITACHI [Hitachi Semiconductor]

HN58X2402/58X2404/58X2408/58X2416/58X2432/58X2464-SR
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 2kbit 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
12
Notes: 1. Don‘t care bits for 32k and 64k.
2k to 16k
32k to 64k
Start
Start
2. Don‘t care bit for 32k.
1 0 1 0
1 0 1 0
Device
address
Device
address
W
W
R/W
R/W
Memory
address (n)
1st Memory
address (n)
ACK
ACK
Write data (n)
ACK
2nd Memory
address (n)
ACK
ACK
ACK
Write data (n)
Stop
Stop