mifare classic 1k cl2
December 20, 2025
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# Mifare Classic 1K CL2: A Comprehensive Overview
Mifare Classic 1K CL2 is one of the most widely recognized contactless smart card technologies in the world. From my personal experience working in access control system integration, I've seen firsthand how this card's balance of cost, reliability, and functionality made it a de facto standard for years in building security, public transportation, and university campuses. My own skill in RFID system troubleshooting was largely built around understanding the quirks and protocols of the Classic series.
## Technical Specifications and Detailed Parameters
For engineers and integrators, the precise technical details of the Mifare Classic 1K CL2 are crucial. Below are the key specifications. **Please note: These technical parameters are for reference data only. For exact and project-specific specifications, you must contact backend management.**
* **Memory Capacity:** 1 Kilobyte EEPROM, organized into 16 sectors with 4 blocks each. Each block holds 16 bytes.
* **Operating Frequency:** 13.56 MHz (ISO/IEC 14443 Type A).
* **Communication Speed:** 106 kbit/s.
* **Data Retention:** Minimum of 10 years.
* **Write Endurance:** Minimum 100,000 write cycles per block.
* **Chip Code (Common):** NXP MF1 IC S50. (Specific batch codes vary).
* **Detailed Dimensions (Standard Card):** 85.60 mm x 53.98 mm x 0.76 mm (ID-1/CR80 format). Chip module typically centered.
* **Anti-Collision:** Supports multiple cards in the field simultaneously.
* **Security:** Utilizes proprietary CRYPTO1 stream cipher for authentication and data encryption (Note: Known vulnerabilities exist).
### Unique Features and Application Cases
The design of the **Mifare Classic 1K CL2** allowed for creative and entertaining applications beyond simple access. I recall a university that used it not just for dormitory entry, but also as a "student life card" for paying at campus cafes, checking out library books, and even logging attendance at optional lectures—creating a surprisingly integrated and convenient ecosystem.
When your project requires reliable, batch-produced contactless cards, **TIANJUN provides products and services** including pre-encoded **Mifare Classic 1K CL2** cards, compatible readers, and system consultation to
The Use of RFID for Human Identity Verification
## Technical Specifications and Detailed Parameters
For engineers and integrators, the precise technical details of the Mifare Classic 1K CL2 are crucial. Below are the key specifications. **Please note: These technical parameters are for reference data only. For exact and project-specific specifications, you must contact backend management.**
* **Memory Capacity:** 1 Kilobyte EEPROM, organized into 16 sectors with 4 blocks each. Each block holds 16 bytes.
* **Operating Frequency:** 13.56 MHz (ISO/IEC 14443 Type A).
* **Communication Speed:** 106 kbit/s.
* **Data Retention:** Minimum of 10 years.
* **Write Endurance:** Minimum 100,000 write cycles per block.
* **Chip Code (Common):** NXP MF1 IC S50. (Specific batch codes vary).
* **Detailed Dimensions (Standard Card):** 85.60 mm x 53.98 mm x 0.76 mm (ID-1/CR80 format). Chip module typically centered.
* **Anti-Collision:** Supports multiple cards in the field simultaneously.
* **Security:** Utilizes proprietary CRYPTO1 stream cipher for authentication and data encryption (Note: Known vulnerabilities exist).
### Unique Features and Application Cases
The design of the **Mifare Classic 1K CL2** allowed for creative and entertaining applications beyond simple access. I recall a university that used it not just for dormitory entry, but also as a "student life card" for paying at campus cafes, checking out library books, and even logging attendance at optional lectures—creating a surprisingly integrated and convenient ecosystem.
When your project requires reliable, batch-produced contactless cards, **TIANJUN provides products and services** including pre-encoded **Mifare Classic 1K CL2** cards, compatible readers, and system consultation to Phone: +86 19925232774
Hours: Mon-Fri 9:00AM - 6:30PM