DESCRIPTION

IS23SC4442 contains 256 x 8 bits of EEPROM main memory and a 32 x 1 bit protection PROM memory. The main memory can be randomly accessed byte by byte. During memory erase, all 8 bits of a byte are set to logical one. During memory write, individual bit(s) are set to logical zeros depend on the data value to be written. Normally, a data change may consists of an erase and a write operation. The write or erase operation takes at least 2.5 ms to complete.

FEATURES

• Standard CMOS process

• 256 x 8 bits EEPROM organization

• Byte-wise addressing

• Irreversible byte-wise write protection of lowest 32 address (Byte 0..31)

• 3-byte Programmable Security Code (PSC) for memory write/erase protection

• 2.7-5.5V power supply for read and write/erase

• Low power operation: 3 mA typical active current

• 2.5 ms programming time

• 2-wire serial interface

• End of processing indication

• ISO standard 7816 compatible

• High reliability:

– 1,000,000 erase/write cycles guaranteed

– 10 years data retention

• Wide operating temperature range

–30°C to 75°C