集成电路芯片资料和参数

芯片型号:GT23SC4442

功能特点

Secure Serial Smart Card

• GT23SC4442 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.

• The first 32 bytes (Address: 0 to 31) in memory are irreversibly protected by the corresponding 32 protect bits in the 32 x 1 bit protection memory. The 32 protect bits are onetime programmable, and they cannot be erased once they are set to logical zero.

• GT23SC4442 provides a 3-bit Error Counter (EC), and three bytes Programmable Security Code (PSC) to prevent unauthorized erase/write operation to the memory. All the memory, except the PSC, can be read after the chip is powered on. But, the memory can be written or erased only after the PSC is entered and verified correct. After three successive unsuccessful verifications of PSC, the Error Counter locks the chip from a further attempt, and the memory can never be erased or written.

参数指标

• 容量:2K

• 架构:256 x 8

• 电源电压:2.7V-5.5V

• 工作频率( MHz ):up to 5

• 封装:wafer, module

• 量产状况:Production