HN58X2402 View Datasheet(PDF) - Hitachi -> Renesas Electronics

Part Name

Description

View to exact match

HN58X2402

Two-wire serial interface (2k EEPROM 256-word x 8-bit) 4k EEPROM (512-word x 8-bit)

Hitachi -> Renesas Electronics 

HN58X2402/58X2404/58X2408/58X2416/58X2432/58X2464

Random Read Operation

2k to

16k

Start

32k to

64k

Start

Device

address

@@@

1010

W

Memory

address (n)

ACK

R/W

Dummy write

Device

address

@@@

1010

W

1st Memory

address (n)

ACK

R/W

Dummy write

Device

address

###

1010

R

Read data (n)

Start

ACK

ACK No ACK

R/W

Stop

Currect address read

2nd Memory

address (n)

ACK

Device

address

###

1010

R

Start R/W

ACK

ACK

Read data (n)

No ACK

Stop

Currect address read

Notes: 1. Don‘t care bits for 32k and 64k.

2. Don‘t care bit for 32k.

3. 2nd device address code (#) should be same as 1st (@).

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

2k to

64k

Start

Device

address

1010

Read data (n) Read data (n+1) Read data (n+2) Read data (n+m)

R

ACK

R/W

ACK

ACK ACK

No ACK

Stop

16

Share Link: