MIFARE Classic EV1 4K
NXP MIFARE Classic EV1 4K is an RFID tag IC, operating at 13.56 MHz, supporting ISO/IEC 14443-A, with 4 kB (32 sectors of 4 blocks + 8 sectors of 16 blocks, 16 bytes per block).
4KB ISO 14443A, legacy access control
Full Specifications
| Manufacturer | NXP |
|---|---|
| Frequency Category | HF 13.56 MHz |
| Frequency | 13.56 MHz |
| Protocol | ISO/IEC 14443-A |
| Memory | 4 kB (32 sectors of 4 blocks + 8 sectors of 16 blocks, 16 bytes per block) |
| Interface | RF contactless |
| Temperature Range | -25°C to +70°C |
| Form Factor | Bumped die on sawn wafer (8" 120μm, 8" 75μm, 12" 120μm), MOA4 module (SOT500-2), MOA8 module (SOT500-4) |
| Security | CRYPTO1 stream cipher, mutual three-pass authentication (ISO/IEC DIS 9798-2), two secret keys (A/B) per sector, 7-byte UID or 4-byte NUID, Random ID support |
Engineering Brief
The MIFARE Classic EV1 4K is a 13.56 MHz contactless smart card IC compliant with ISO/IEC 14443 Type A, offering 4 kB of EEPROM organized in 40 sectors with flexible access control. It features CRYPTO1 mutual authentication, dual-key per sector security, and supports both 7-byte UID and 4-byte NUID options with Random ID capability. Designed for fast transactions (<100 ms), it provides 10-year data retention, 200k write endurance, and operates from -25°C to +70°C. Available as bumped wafer die or contactless modules (MOA4/MOA8), it is widely deployed in legacy transport ticketing, access control, and loyalty applications.
Typical Applications
Standards & Compliance
Frequently Asked Questions
How much memory does the MIFARE Classic EV1 4K have?
The MIFARE Classic EV1 4K has 4 KB (4096 bytes) of EEPROM memory organized in 40 sectors: 32 sectors with 4 blocks and 8 sectors with 16 blocks, with each block containing 16 bytes.
What is the difference between MIFARE Classic 1K and 4K?
The MIFARE Classic EV1 4K offers 4 KB of memory (40 sectors) compared to 1 KB (16 sectors) in the 1K version, providing four times the storage capacity while maintaining the same CRYPTO1 authentication and ISO 14443-A protocol.
Is MIFARE Classic EV1 4K secure for new applications?
MIFARE Classic EV1 4K uses legacy CRYPTO1 encryption which has known vulnerabilities. It is not recommended for new high-security applications; consider MIFARE DESFire or MIFARE Plus for modern deployments requiring stronger cryptography.
What is the read range of MIFARE Classic EV1 4K?
The MIFARE Classic EV1 4K typically achieves read ranges up to 10 cm depending on antenna design and reader power, operating at 13.56 MHz according to ISO/IEC 14443-A specifications.
Does MIFARE Classic EV1 4K support NFC smartphones?
Yes, MIFARE Classic EV1 4K can be read by most Android NFC smartphones with native MIFARE Classic support, though iOS devices have limited or no support for MIFARE Classic technology.
What is the data retention and write endurance of MIFARE Classic EV1 4K?
The MIFARE Classic EV1 4K offers 10-year data retention and 200,000 write cycle endurance, operating across an industrial temperature range of -25°C to +70°C.
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Cross-manufacturer alternatives
Sourcing NXP MIFARE Classic EV1 4K in volume?
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