HN58X24512FPI Hitachi Semiconductor, HN58X24512FPI Datasheet - Page 12

• Manufacturer Part Number: HN58X24512FPI
• Description: Two-wire serial interface 512k EEPROM (64-kword 8-bit)
• Manufacturer: Hitachi Semiconductor

HN58X24512I
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 EEPROM receives 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
Start
Note: 1. Don't care bit.
1 0 1 0 0
Device
address
W
R/W
1st Memory
address (n)
ACK
ACK
2nd Memory
address (n)
ACK
Write data (n)
Stop