BL7442LV中文資料上海貝嶺數(shù)據(jù)手冊PDF規(guī)格書

Description

BL7442LV is a IC Card chip (module) made by 1.2um CMOS EERPOM process. It has 256 byte EEPROM with logical encryption and function. It can be operated at low voltage.BL7442LV has two types, type A and type B.

Features

? 256 x 8 bit EEPROM organization

? Byte-wise addressing

? Irreversible byte-wise write protection of lowest 32 addresses (Byte 0 ……31)

? 32 x1 bit organization of protection memory

? Two-wire link protocol

? End of processing indicated at data output

? Answer-to-Reset according to ISO standard 7816-3(B type)

? EEPROM programming time 2.5 ms per byte for both Erasing and writing

? Minimum of 100,000 write/erase cycles

? Data retention time :>10 years

? Contacts configuration and serial interface according to ISO 7816 standard (synchronous transmission)

? BL7442LV A type: Data can only be read(include Answer-to-Reset )and changed after entry of the correct 3-byte Programmable security code

? BL7442LV B type: Data can only be changed after entry of the correct 3-byte Programmable security code