ISO 15693-Compliant 1Kb Memory Fob

The MAX66120 combines 1024 bits of user EEPROM, a 64-bit unique identifier (UID), and a 13.56MHz ISO 15693 RF interface in a plastic key fob. The memory is organized as 16 blocks of 8 bytes plus two more blocks for data and control registers. Each block has a user-readable write-cycle counter. Four adjacent user EEPROM blocks form a memory page (pages 0 to 3). Memory protection features are write protection and EPROM emulation, which the user can set for each individual memory page. The MAX66120 supports all ISO 15693-defined data rates, modulation indices, subcarrier modes, the selected state, application family identifier (AFI), data storage format identifier (DSFID), and the Optionflag bit for read operations. Memory write access is accomplished through standard ISO 15693 memory and control function commands.

Applications

* Access Control * Asset Tracking * Driver Identification (Fleet Application)

* Fully Compliant with ISO 15693 and ISO 18000-3 Mode 1 Standard

* 13.56MHz ±7kHz Carrier Frequency

* 1024-Bit User EEPROM with Block Lock Feature, Write-Cycle Counter, and Optional EPROM-Emulation Mode

* 64-Bit UID

* Read and Write (64-Bit Block)

* Supports AFI and DSFID Function

* 10ms Programming Time

* To Fob: 10% or 100% ASK Modulation Using 1/4 (26kbps) or 1/256 (1.6kbps) Pulse-Position Coding

* From Fob: Load Modulation Using Manchester Coding with 423kHz and 484kHz Subcarrier in Low (6.6kbps) or High (26kbps) Data-Rate Mode

* 200,000 Write/Erase Cycles (Minimum)

* 40-Year Data Retention (Minimum)

* Compatible with Existing 1Kb ISO 15693 Products on the Market

* Supports the OptionFlag for Read Operations

* Powered Entirely Through the RF Field

* Operating Temperature: -25°C to +50°C