HN58X2402 Datasheet, PDF (13/21 Pages) Hitachi Semiconductor – Two-wire serial interface 2k / 4k / 8k / 16k / 32k / 64k EEPROM(8-kword x 8-bit)

HN58X2402/58X2404/58X2408/58X2416/58X2432/58X2464
Page Write:
The EEPROM is capable of the page write operation which allows any number of bytes up to 32 bytes to
be written in a single write cycle. The page write is the same sequence as the byte write except for inputting
the more write data. The page write is initiated by a start condition, device address word, memory
address(n) and write data(Dn) with every ninth bit acknowledgment. The EEPROM enters the page write
operation if the EEPROM receives more write data(Dn+1) instead of receiving a stop condition. The a0 to
a4 address bits are automatically incremented upon receiving write data(Dn+1). The EEPROM can
continue to receive write data up to 32 bytes. If the a0 to a4 address bits reaches the last address of the
page, the a0 to a4 address bits will roll over to the first address of the same page and previous write data
will be overwritten. Upon receiving a stop condition, the EEPROM stops receiving write data and enters
internally-timed write cycle.
Page Write Operation
2k 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
Write data (n) Write data (n+m)
ACK
ACK
2nd Memory
address (n)
Write data (n)
Stop
ACK
Write data (n+m)
ACK
ACK
ACK
ACK
Stop
Notes: 1. Don‘t care bits for 32k and 64k.
2. Don‘t care bit for 32k.
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