hn58x2408t Renesas Electronics Corporation., hn58x2408t Datasheet - Page 16

• Manufacturer Part Number: hn58x2408t
• Description: Two-wire Serial Interface 2k / 4k / 8k / 16k / 32k / 64k Eeprom 8-kword X 8-bit - Hitachi Semiconductor
• Manufacturer: Renesas Electronics Corporation.

HN58X2402/58X2404/58X2408/58X2416/58X2432/58X2464
Random Read Operation
Sequential Read:
Sequential reads are initiated by either a current address read or a random read. If the EEPROM receives
acknowledgment “0” after 8-bit read data, the read address is incremented and the next 8-bit read data are
coming out. This operation can be continued as long as the EEPROM receives acknowledgment “0”. The
address will roll over and returns address zero if it reaches the last address of the last page. The sequential
read can be continued after roll over. The sequential read is terminated if the EEPROM receives
acknowledgment “1” (no acknowledgment) and a following stop condition.
Sequential Read Operation
16
Notes: 1. Don‘t care bits for 32k and 64k.
2k to
32k to
2k to
16k
64k
64k
Start
Start
Start
2. Don‘t care bit for 32k.
3. 2nd device address code (#) should be same as 1st (@).
1 0 1 0
1 0 1 0
Device
address
Device
address
1 0 1 0
Device
address
@@@
@@@
Dummy write
W
W
R
R/W
R/W
R/W
Memory
address (n)
1st Memory
address (n)
ACK
ACK
ACK
Read data (n)
Dummy write
ACK
ACK
2nd Memory
address (n)
Read data (n+1) Read data (n+2)
ACK
1 0 1 0
Start
Device
address
# # #
Currect address read
R
R/W
ACK
ACK
1 0 1 0
Start
ACK
Read data (n)
Device
address
No ACK
# # #
R/W
ACK
ACK
Currect address read
Stop
R
Read data (n+m)
Read data (n)
No ACK
No ACK
Stop
Stop