HN58X24128I/HN58X24256I

Two-wire serial interface

128k EEPROM (16-kword

× 8-bit)

256k EEPROM (32-kword

× 8-bit)

ADE-203-1029B (Z)

Rev. 2.0

Nov. 26, 1999

Description

HN58X24xxx series are two-wire serial interface EEPROM (Electrically Erasable and Programmable

ROM). They realize high speed, low power consumption and a high level of reliability by employing

advanced MNOS memory technology and CMOS process and low voltage circuitry technology. They also

have a 64-byte page programming function to make their write operation faster.

Note:

Hitachi’s serial EEPROM are authorized for using consumer applications such as cellular phone,

camcorders, audio equipment.

Therefore, please contact Hitachi’s sales office before using

industrial applications such as automotive systems, embedded controllers, and meters.

Features

• Single supply: 1.8 V to 5.5 V

• Clock frequency: 400 kHz

• Power dissipation:

 Standby: 3 µA (max)

 Active (Read): 1 mA (max)

 Active (Write): 5 mA (max)

• Automatic page write: 64-byte/page

• Write cycle time: 10 ms (2.7 V to 5.5 V)/15 ms (1.8 V to 2.7 V)

• Data retention: 10 Years