MAX66120 MAXIM [Maxim Integrated Products], MAX66120 Datasheet
MAX66120
Related parts for MAX66120
MAX66120 Summary of contents
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... Rev 0; 11/10 ISO 15693-Compliant 1Kb Memory Fob General Description 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 ...
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... Note 5: Production tested at 13.56MHz only. Note 6: Measured from the time at which the incident field is present with strength greater than or equal to H which the MAX66120’s internal power-on reset signal is deasserted and the device is ready to receive a command frame. Not characterized or production tested; guaranteed by simulation only. ...
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... Figure 2. ISO 15693 Commands Overview MSb E0h 2Bh Figure 3. 64-Bit UID As a wireless device, the MAX66120 is not connected to any power source. It gets the energy for operation from the surrounding RF field, which must have a mini- mum strength as specified in the Electrical Characteristics table. _______________________________________________________________________________________ INTERNAL SUPPLY ...
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... UID is read accessible through the Inventory and Get System Information commands. Detailed Memory Description The memory of the MAX66120 is organized as 18 blocks of 8 bytes each. Figure 4 shows the memory map. The first 16 blocks (block numbers 00h to 0Fh in hexadecimal counting) are the user EEPROM, the area for application-specific data ...
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ISO 15693-Compliant 1Kb Memory Fob Table 1. Memory Protection Matrix CONTROLLING BLOCKS BLOCKS REGISTER* 00h TO 03h 04h TO 07h BP1 E, W — BP2 — BP3 — — BP4 — — U-Lock — — AFI-Lock — — ...
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... Figure 6. Downlink Modulation (e.g., Approximately 100% Amplitude Modulation) ISO 15693 Communication The communication between the master and the MAX66120 (slave) is based on the exchange of data packets. The master initiates every transaction; only one side (master or slaves) transmits information at any time. Each data packet begins with a start-of-frame (SOF) pattern and ends with an end-of-frame (EOF) pattern ...
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ISO 15693-Compliant 1Kb Memory Fob PULSE- MODULATED CARRIER Figure 7. Downlink Data Coding (Case “1 Out of 256”) The path from master to slave uses amplitude modula- tion (Figure 6); the modulation index can be ...
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ISO 15693-Compliant 1Kb Memory Fob PULSE POSITION “00” ~ 9.44μs ~ 9.44μs PULSE POSITION “01” LSb) ~ 28.32μs PULSE POSITION “10” LSb) PULSE POSITION “11” Figure 8. Downlink Data Coding (Case “1 Out of 4”) (Carrier ...
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ISO 15693-Compliant 1Kb Memory Fob ~ 9.44μs ~ 37.76μs Figure 10. Downlink SOF for “1 Out of 4” Coding (Carrier Not Shown) Figure 11. Downlink EOF (Identical for Both Coding Schemes) (Carrier Not Shown) 423.75kHz, ~ 18.88μs TRANSMITTING A ONE ...
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ISO 15693-Compliant 1Kb Memory Fob 423.75kHz, ~ 18.88μs 484.28kHz, ~ 18.58μs Figure 13. Uplink Coding, Two Subcarriers Case (High Data-Rate Timing) ~ 56.64μs Figure 14. Uplink SOF, Single Subcarrier Case (High Data-Rate Timing) 484.28kHz ~ 55.75μs Figure 15. Uplink SOF, ...
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ISO 15693-Compliant 1Kb Memory Fob ISO 15693 Slave States and Address Modes Initially, the master has no information whether there are any RF devices in the field of its antenna. The master learns the UIDs of the slaves in its ...
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ISO 15693-Compliant 1Kb Memory Fob RESPONSE LEGEND: RESPONSE TO RESET TO READY RESPONSE TO SELECT NO RESPONSE OUT OF FIELD NOTE 2 NOTE 1: THE SLAVE PROCESSES THE INVENTORY COMMAND AND OTHER COMMANDS PROVIDED THAT THEY ARE SENT IN THE ...
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ISO 15693-Compliant 1Kb Memory Fob BIT 8 (MSb) BIT 7 BIT 6 0 Option_flag Address_flag BIT 8 (MSb) BIT 7 BIT Nb_slots_flag The command descriptions on the subsequent pages begin with a byte called request flags. The ...
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ISO 15693-Compliant 1Kb Memory Fob REQUEST FLAGS COMMAND (1 Byte) 01h Note 1: The AFI byte is transmitted only if the AFI_flag bit is set to 1. The AFI byte, if transmitted, narrows the range of slaves that qualify for ...
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... Table 5 shows a matrix of commands and potential errors. If there was no error, the response begins with a response flags byte 00h followed by command-specific data, as specified in the detailed command description. If the MAX66120 does not recognize a command, it does not generate a response. UID (8 Bytes) UID ...
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... Get System Information The Get System Information command allows the mas- ter to retrieve technical information about the MAX66120. The IC reference code indicates the die revision in hexadecimal format, such as A1h, A2h, B1h, etc. Write Single Block The normal way to write data to the device is through the Write Single Block command ...
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ISO 15693-Compliant 1Kb Memory Fob REQUEST FLAGS (1 Byte this command is processed without any error, the slave responds with a response flags byte of 00h. REQUEST FLAGS (1 Byte) Response Data for the Read Single Block Command ...
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ISO 15693-Compliant 1Kb Memory Fob REQUEST FLAGS COMMAND (1 Byte) 23h Response Data for the Read Multiple Blocks Command (No Error, Option_flag Not Set) RESPONSE FLAGS 00h Response Data for the Read Multiple Blocks Command (No Error, Option_flag Set) RESPONSE ...
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ISO 15693-Compliant 1Kb Memory Fob REQUEST FLAGS (1 Byte this command is processed without any error, the slave responds with a response flags byte of 00h. REQUEST FLAGS (1 Byte this command is processed without any ...
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ISO 15693-Compliant 1Kb Memory Fob MSb 1ST 2ND STAGE STAGE STAGE 9TH 10TH 11TH STAGE STAGE STAGE Figure 17. CRC-16-CCITT Generator Command-Specific ISO 15693 Communication Protocol—Legend SYMBOL DESCRIPTION ...
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ISO 15693-Compliant 1Kb Memory Fob Command-Specific ISO 15693 Communication Protocol—Color Codes Master-to-Slave Get System Information SOF RQF GSY [UID] CRC-16 EOF Success Write Single Block SOF RQF WSB [UID] BN BDATA Lock Block SOF RQF LBL [UID] BN CRC-16 Success ...
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ISO 15693-Compliant 1Kb Memory Fob Read Multiple Blocks SOF RQF RMB [UID] SBN #BLK Custom Read Block SOF RQF CRB MFG [UID] Write AFI SOF RQF WAFI [UID] AFI Lock AFI SOF RQF LAFI [UID] CRC-16 22 ______________________________________________________________________________________ ISO 15693 ...
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... ISO 15693 Communication Examples (continued) Write DSFID SOF RQF WDSF [UID] DSFID CRC-16 Success Error Lock DSFID SOF RQF LDSF [UID] CRC-16 EOF Success Error TOP VIEW 28mm MAX66120K-000AA+ SIDE VIEW ______________________________________________________________________________________ EOF (Carrier) t SOF RSF = 00h CRC-16 PROG SOF RSF = 01h ERRC CRC-16 (Carrier) t ...
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ISO 15693-Compliant 1Kb Memory Fob REVISION REVISION NUMBER DATE 0 11/10 Initial release Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the ...