ISSI 4428

ISSI 4428 smart card is a high-performance smart card based on standard CMOS process, with excellent features and wide range of applications. The following are the main features of the ISSI 4428 card:

Chip features:

1. Standard CMOS process: The ISSI 4428 chip uses a standard CMOS process to ensure that it meets high standards in performance and manufacturing.
2. EEPROM Organization: ISSI 4428 is equipped with 1024 x 8-bit EEPROM organization, enabling efficient data storage and management.
3. Byte write protection: Through the byte write protection function, ISSI 4428 provides effective protection of data to ensure the security of critical information.
4. Single 5V power supply: The ISSI 4428 supports a single 5V power supply, ensuring stable operation when reading, writing and erasing.
5. Low-power operation: The ISSI 4428 excels in low-power operation, with a typical active current of 3 mA and a 5 ms programming time, ensuring high energy efficiency and fast operation.
6. 3-wire serial interface: ISSI 4428 uses a 3-wire serial interface and supports a serial clock rate of 20 KHz, complying with the interface standard of ISO standard 7816 (synchronous transmission).
7. High electrostatic discharge protection: With high electrostatic discharge protection exceeding 4KV, it improves the durability and reliability of the card.
8. Wide operating temperature range: ISSI 4428 is suitable for a wide operating temperature range, ranging from 0 to +70°C for commercial applications and -40 to +85°C for industrial applications.
9. High reliability: The ISSI 4428 chip guarantees 1 million erase and write cycles and provides a 10-year data retention period to ensure that the card maintains high reliability during long-term use.
10. Programmable Security Code (PSC): ISSI 4428 is equipped with a 2-byte programmable security code, which can be used for memory write and erase protection to improve security.

The characteristics of the ISSI 4428 smart card make it an ideal choice in various application scenarios, including identity verification, memory cards, financial transactions, etc., meeting users' high requirements for performance, security and reliability.