ANT7-T-M24LR04E

M24LR04E-R Dynamic NFC/RFID tag IC with 4-Kbit EEPROM, energy harvesting, I²C bus and ISO 15693 RF interface Datasheet - production data UFDFPN8 (MC) SO8 (MN) 150 mils width TSSOP8 (DW) • From tag: load modulation using Manchester coding with 423 kHz and 484 kHz subcarriers in low (6.6 kbit/s) or high (26 kbit/s) data rate mode. Supports the 53 kbit/s data rate with Fast commands • Internal tuning capacitance: 27.5pF • 64-bit unique identifier (UID) • Read Block & Write (32-bit blocks) Digital output pin • User configurable pin: RF write in progress or RF busy mode Wafer (SB12I) Energy harvesting • Analog pin for energy harvesting Features • 4 sink current configurable ranges • Belonging to ST25 family, which includes all NFC/RF ID tag and reader products from ST Temperature range • From –40 to 85 °C I2C interface Memory • Two-wires I2C serial interface supports 400 kHz protocol • 4-Kbit EEPROM organized into: – 512 bytes in I2C mode – 128 blocks of 32 bits in RF mode • Single supply voltage: – 1.8 V to 5.5 V • Write time – I2C: 5 ms (max.) – RF: 5.75 ms including the internal Verify time • Byte and Page Write (up to 4 bytes) • Random and Sequential read modes • Self-timed programming cycle • Write cycling endurance: – 1 million write cycles at 25 °C – 150k write cycles at 85 °C • Automatic address incrementing • Enhanced ESD/latch-up protection • I²C timeout • More than 40-year data retention Contactless interface • Multiple password protection in RF mode • ISO 15693 and ISO 18000-3 mode 1 compatible • Single password protection in I2C mode • 13.56 MHz ± 7 kHz carrier frequency • Package – SO8 (ECOPACK2®) – TSSOP8 (ECOPACK2®) – UFDFPN8 (ECOPACK2®) • To tag: 10% or 100% ASK modulation using 1 out of 4 (26 Kbit/s) or 1 out of 256 (1.6 Kbit/s) pulse position coding July 2017 This is information on a product in full production. DocID022208 Rev 11 1/146 www.st.com Contents M24LR04E-R Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2 Signal descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.1 Serial clock (SCL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.2 Serial data (SDA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.3 RF Write in progress / RF Busy (RF WIP/BUSY) . . . . . . . . . . . . . . . . . . . 15 2.4 Energy harvesting analog output (Vout) . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.5 Antenna coil (AC0, AC1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.5.1 Device reset in RF mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.6 VSS ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2.7 Supply voltage (VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2.7.1 2.7.2 Operating supply voltage VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Power-up conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2.7.3 Device reset in I²C mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2.7.4 Power-down conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3 User memory organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 4 System memory area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4.1 M24LR04E-R block security in RF mode . . . . . . . . . . . . . . . . . . . . . . . . . 23 4.1.1 4.2 M24LR04E-R block security in I²C mode (I2C_Write_Lock bit area) . . . . 26 4.3 Configuration byte and Control register . . . . . . . . . . . . . . . . . . . . . . . . . . 26 4.4 5 2/146 Example of the M24LR04E-R security protection in RF mode . . . . . . . 25 4.3.1 RF WIP/BUSY pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 4.3.2 Energy harvesting configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4.3.3 FIELD_ON indicator bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 4.3.4 Configuration byte access in I²C and RF modes . . . . . . . . . . . . . . . . . . 29 4.3.5 Control register access in I²C or RF mode . . . . . . . . . . . . . . . . . . . . . . 29 ISO 15693 system parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 I2C device operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.1 Start condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.2 Stop condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 DocID022208 Rev 11 M24LR04E-R Contents 5.3 Acknowledge bit (ACK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.4 Data input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.5 I²C timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.5.1 I²C timeout on Start condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 5.5.2 I²C timeout on clock period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 5.6 Memory addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 5.7 Write operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 5.8 Byte write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 5.9 Page write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 5.10 Minimizing system delays by polling on Ack . . . . . . . . . . . . . . . . . . . . . . 36 5.11 Read operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 5.12 Random Address Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 5.13 Current Address Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 5.14 Sequential Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 5.15 Acknowledge in Read mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 5.16 M24LR04E-R I2C password security . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 5.16.1 I2C present password command description . . . . . . . . . . . . . . . . . . . . . 38 5.16.2 I2C write password command description . . . . . . . . . . . . . . . . . . . . . . . 39 6 M24LR04E-R memory initial state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 7 RF device operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 7.1 RF communication and energy harvesting . . . . . . . . . . . . . . . . . . . . . . . . 41 7.2 Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 7.3 Initial dialog for vicinity cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 7.3.1 Power transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 7.3.2 Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 7.3.3 Operating field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 8 Communication signal from VCD to M24LR04E-R . . . . . . . . . . . . . . . . 44 9 Data rate and data coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 9.1 Data coding mode: 1 out of 256 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 9.2 Data coding mode: 1 out of 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 9.3 VCD to M24LR04E-R frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 DocID022208 Rev 11 3/146 7 Contents M24LR04E-R 9.4 10 11 Communication signal from M24LR04E-R to VCD . . . . . . . . . . . . . . . . 50 10.1 Load modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 10.2 Subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 10.3 Data rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Bit representation and coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 11.1 11.2 12 Start of frame (SOF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Bit coding using one subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 11.1.1 High data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 11.1.2 Low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Bit coding using two subcarriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 11.2.1 High data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 11.2.2 Low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 M24LR04E-R to VCD frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 12.1 12.2 12.3 12.4 SOF when using one subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 12.1.1 High data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 12.1.2 Low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 SOF when using two subcarriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 12.2.1 High data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 12.2.2 Low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 EOF when using one subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 12.3.1 High data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 12.3.2 Low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 EOF when using two subcarriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 12.4.1 High data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 12.4.2 Low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 13 Unique identifier (UID) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 14 Application family identifier (AFI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 15 Data storage format identifier (DSFID) . . . . . . . . . . . . . . . . . . . . . . . . . 60 15.1 16 4/146 CRC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 M24LR04E-R protocol description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 DocID022208 Rev 11 M24LR04E-R 17 18 19 M24LR04E-R states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 17.1 Power-off state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 17.2 Ready state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 17.3 Quiet state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 17.4 Selected state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 18.1 Addressed mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 18.2 Non-addressed mode (general request) . . . . . . . . . . . . . . . . . . . . . . . . . 65 18.3 Select mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 19.1 20 21 Contents Request flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Response format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 20.1 Response flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 20.2 Response error code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Anticollision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 21.1 Request parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 22 Request processing by the M24LR04E-R . . . . . . . . . . . . . . . . . . . . . . . 72 23 Explanation of the possible cases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 24 Inventory Initiated command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 25 Timing definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 26 25.1 t1: M24LR04E-R response delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 25.2 t2: VCD new request delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 25.3 t3: VCD new request delay when no response is received from the M24LR04E-R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 Command codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 26.1 Inventory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 26.2 Stay Quiet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 DocID022208 Rev 11 5/146 7 Contents M24LR04E-R 26.3 Read Single Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 26.4 Write Single Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 26.5 Read Multiple Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 26.6 Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 26.7 Reset to Ready . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 26.8 Write AFI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 26.9 Lock AFI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 26.10 Write DSFID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 26.11 Lock DSFID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 26.12 Get System Info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 26.13 Get Multiple Block Security Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 26.14 Write-sector Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 26.15 Lock-sector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 26.16 Present-sector Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 26.17 Fast Read Single Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 26.18 Fast Inventory Initiated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 26.19 Fast Initiate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 26.20 Fast Read Multiple Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 26.21 Inventory Initiated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110 26.22 Initiate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112 26.23 ReadCfg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113 26.24 WriteEHCfg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114 26.25 WriteDOCfg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115 26.26 SetRstEHEn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117 26.27 CheckEHEn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118 27 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 28 I2C DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121 29 Write cycle definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 30 RF electrical parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 31 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132 6/146 DocID022208 Rev 11 M24LR04E-R 32 Contents 31.1 SO8N package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132 31.2 UFDFN8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 31.3 TSSOP8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137 Appendix A Anticollision algorithm (informative) . . . . . . . . . . . . . . . . . . . . . . . 139 A.1 Algorithm for pulsed slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139 Appendix B CRC (informative) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 B.1 CRC error detection method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 B.2 CRC calculation example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 Appendix C Application family identifier (AFI) (informative) . . . . . . . . . . . . . . 143 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144 DocID022208 Rev 11 7/146 7 List of tables M24LR04E-R List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. Table 16. Table 17. Table 18. Table 19. Table 20. Table 21. Table 22. Table 23. Table 24. Table 25. Table 26. Table 27. Table 28. Table 29. Table 30. Table 31. Table 32. Table 33. Table 34. Table 35. Table 36. Table 37. Table 38. Table 39. Table 40. Table 41. Table 42. Table 43. Table 44. Table 45. Table 46. Table 47. Table 48. 8/146 Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Device select code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Address most significant byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Address least significant byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Sector details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Sector security status byte area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Sector security status byte organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Read / Write protection bit setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Password control bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Password system area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 M24LR04E-R sector security protection after power-up . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 M24LR04E-R sector security protection after a valid presentation of password 1 . . . . . . . 25 I2C_Write_Lock bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Configuration byte. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Control register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 EH_enable bit value after power-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 System parameter sector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 10% modulation parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Response data rates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 UID format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 CRC transmission rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 VCD request frame format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 M24LR04E-R Response frame format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 M24LR04E-R response depending on Request_flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 General request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Definition of request flags 1 to 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Request flags 5 to 8 when Bit 3 = 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Request flags 5 to 8 when Bit 3 = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 General response format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Definitions of response flags 1 to 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Response error code definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Inventory request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 Example of the addition of 0-bits to an 11-bit mask value . . . . . . . . . . . . . . . . . . . . . . . . . 70 Timing values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 Command codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 Inventory request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Inventory response format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Stay Quiet request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Read Single Block request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Read Single Block response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . 81 Sector security status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Read Single Block response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . 81 Write Single Block request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Write Single Block response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . 82 Write Single Block response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . 83 Read Multiple Block request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 Read Multiple Block response format when Error_flag is NOT set. . . . . . . . . . . . . . . . . . . 86 DocID022208 Rev 11 M24LR04E-R Table 49. Table 50. Table 51. Table 52. Table 53. Table 54. Table 55. Table 56. Table 57. Table 58. Table 59. Table 60. Table 61. Table 62. Table 63. Table 64. Table 65. Table 66. Table 67. Table 68. Table 69. Table 70. Table 71. Table 72. Table 73. Table 74. Table 75. Table 76. Table 77. Table 78. Table 79. Table 80. Table 81. Table 82. Table 83. Table 84. Table 85. Table 86. Table 87. Table 88. Table 89. Table 90. Table 91. Table 92. Table 93. Table 94. Table 95. Table 96. Table 97. Table 98. Table 99. List of tables Sector security status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 Read Multiple Block response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . 86 Select request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Select Block response format when Error_flag is NOT set. . . . . . . . . . . . . . . . . . . . . . . . . 87 Select response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 Reset to Ready request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Reset to Ready response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . 89 Reset to ready response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Write AFI request format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Write AFI response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Write AFI response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Lock AFI request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 Lock AFI response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 Lock AFI response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 Write DSFID request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 Write DSFID response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . . . 93 Write DSFID response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 Lock DSFID request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 Lock DSFID response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . . . . 94 Lock DSFID response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 Get System Info request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 Get System Info response format when Protocol_extension_flag = 0 and Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 Get System Info response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . 96 Get Multiple Block Security Status request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 Get Multiple Block Security Status response format when Error_flag is NOT set . . . . . . . 98 Sector security status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 Get Multiple Block Security Status response format when Error_flag is set . . . . . . . . . . . . 99 Write-sector Password request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Write-sector Password response format when Error_flag is NOT set . . . . . . . . . . . . . . . 100 Write-sector Password response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . 100 Lock-sector request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 Sector security status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 Lock-sector response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . . . 101 Lock-sector response format when Error_flag is set. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 Present-sector Password request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 Present-sector Password response format when Error_flag is NOT set . . . . . . . . . . . . . 103 Present-sector Password response format when Error_flag is set . . . . . . . . . . . . . . . . . . 103 Fast Read Single Block request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 Fast Read Single Block response format when Error_flag is NOT set . . . . . . . . . . . . . . . 105 Sector security status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 Fast Read Single Block response format when Error_flag is set . . . . . . . . . . . . . . . . . . . 105 Fast Inventory Initiated request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 Fast Inventory Initiated response format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 Fast Initiate request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 Fast Initiate response format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 Fast Read Multiple Block request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 Fast Read Multiple Block response format when Error_flag is NOT set. . . . . . . . . . . . . . 109 Sector security status if Option_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 Fast Read Multiple Block response format when Error_flag is set . . . . . . . . . . . . . . . . . . 110 Inventory Initiated request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Inventory Initiated response format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 DocID022208 Rev 11 9/146 10 List of tables Table 100. Table 101. Table 102. Table 103. Table 104. Table 105. Table 106. Table 107. Table 108. Table 109. Table 110. Table 111. Table 112. Table 113. Table 114. Table 115. Table 116. Table 117. Table 118. Table 119. Table 120. Table 121. Table 122. Table 123. Table 124. Table 125. Table 126. Table 127. Table 128. Table 129. Table 130. Table 131. Table 132. Table 133. Table 134. 10/146 M24LR04E-R Initiate request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 Initiate Initiated response format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 ReadCfg request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 ReadCfg response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . . . . . 113 ReadCfg response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 WriteEHCfg request format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 WriteEHCfg response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . . . 114 WriteEHCfg response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 WriteDOCfg request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 WriteDOCfg response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . . . 116 WriteDOCfg response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 SetRstEHEn request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 SetRstEHEn response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . . 117 SetRstEHEn response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 CheckEHEn request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118 CheckEHEn response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . . . 118 CheckEHEn response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 I2C operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121 AC test measurement conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121 Input parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121 I2C DC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122 I2C AC characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123 Write cycle endurance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 RF characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127 Energy harvesting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 SO8N – 8-lead plastic small outline, 150 mils body width, package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132 UFDFN8 - 8-lead, 2 × 3 mm, 0.5 mm pitch ultra thin profile fine pitch dual flat package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 TSSOP8 – 8-lead thin shrink small outline, 3 x 6.4 mm, 0.65 mm pitch, package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 Ordering information scheme for bare die devices or packaged devices . . . . . . . . . . . . . 137 Ordering and marking information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138 CRC definition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 AFI coding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144 DocID022208 Rev 11 M24LR04E-R List of figures List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Figure 30. Figure 31. Figure 32. Figure 33. Figure 34. Figure 35. Figure 36. Figure 37. Figure 38. Figure 39. Figure 40. Figure 41. Figure 42. Figure 43. Figure 44. Figure 45. Figure 46. Figure 47. Figure 48. Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 8-pin package connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 I2C Fast mode (fC = 400 kHz): maximum Rbus value vs. bus parasitic capacitance (Cbus) 17 I2C bus protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Circuit diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Memory sector organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 I²C timeout on Start condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Write mode sequences with I2C_Write_Lock bit = 1 (data write inhibited). . . . . . . . . . . . . 33 Write mode sequences with I2C_Write_Lock bit = 0 (data write enabled) . . . . . . . . . . . . . 35 Write cycle polling flowchart using Ack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Read mode sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 I2C present password command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 I2C write password command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 100% modulation waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 10% modulation waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 1 out of 256 coding mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Detail of a time period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 1 out of 4 coding mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 1 out of 4 coding example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 SOF to select 1 out of 256 data coding mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 SOF to select 1 out of 4 data coding mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 EOF for either data coding mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Logic 0, high data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Logic 0, high data rate, fast commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Logic 1, high data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Logic 1, high data rate, fast commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Logic 0, low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Logic 0, low data rate, fast commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Logic 1, low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Logic 1, low data rate, fast commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Logic 0, high data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Logic 1, high data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Logic 0, low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Logic 1, low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Start of frame, high data rate, one subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Start of frame, high data rate, one subcarrier, fast commands. . . . . . . . . . . . . . . . . . . . . . 54 Start of frame, low data rate, one subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Start of frame, low data rate, one subcarrier, fast commands . . . . . . . . . . . . . . . . . . . . . . 55 Start of frame, high data rate, two subcarriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Start of frame, low data rate, two subcarriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 End of frame, high data rate, one subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 End of frame, high data rate, one subcarrier, fast commands . . . . . . . . . . . . . . . . . . . . . . 56 End of frame, low data rate, one subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 End of frame, low data rate, one subcarrier, Fast commands . . . . . . . . . . . . . . . . . . . . . . 56 End of frame, high data rate, two subcarriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 End of frame, low data rate, two subcarriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 M24LR04E-R decision tree for AFI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 M24LR04E-R protocol timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 DocID022208 Rev 11 11/146 12 List of figures Figure 49. Figure 50. Figure 51. Figure 52. Figure 53. Figure 54. Figure 55. Figure 56. Figure 57. Figure 58. Figure 59. Figure 60. Figure 61. Figure 62. Figure 63. Figure 64. Figure 65. Figure 66. Figure 67. Figure 68. Figure 69. Figure 70. Figure 71. Figure 72. Figure 73. Figure 74. Figure 75. Figure 76. Figure 77. Figure 78. Figure 79. Figure 80. Figure 81. Figure 82. Figure 83. Figure 84. Figure 85. Figure 86. Figure 87. Figure 88. Figure 89. Figure 90. 12/146 M24LR04E-R M24LR04E-R state transition diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Principle of comparison between the mask, the slot number and the UID . . . . . . . . . . . . . 71 Description of a possible anticollision sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 M24LR04E-R RF-Busy management following Inventory command . . . . . . . . . . . . . . . . . 79 Stay Quiet frame exchange between VCD and M24LR04E-R . . . . . . . . . . . . . . . . . . . . . . 80 Read Single Block frame exchange between VCD and M24LR04E-R. . . . . . . . . . . . . . . . 82 Write Single Block frame exchange between VCD and M24LR04E-R . . . . . . . . . . . . . . . . 83 M24LR04E-R RF_Busy management following Write command . . . . . . . . . . . . . . . . . . . . 84 M24LR04E RF_Wip management following Write command. . . . . . . . . . . . . . . . . . . . . . . 85 Read Multiple Block frame exchange between VCD and M24LR04E-R . . . . . . . . . . . . . . 87 Select frame exchange between VCD and M24LR04E-R . . . . . . . . . . . . . . . . . . . . . . . . . 88 Reset to Ready frame exchange between VCD and M24LR04E-R . . . . . . . . . . . . . . . . . . 89 Write AFI frame exchange between VCD and M24LR04E-R . . . . . . . . . . . . . . . . . . . . . . . 91 Lock AFI frame exchange between VCD and M24LR04E-R . . . . . . . . . . . . . . . . . . . . . . . 92 Write DSFID frame exchange between VCD and M24LR04E-R . . . . . . . . . . . . . . . . . . . . 94 Lock DSFID frame exchange between VCD and M24LR04E-R. . . . . . . . . . . . . . . . . . . . . 95 Get System Info frame exchange between VCD and M24LR04E-R . . . . . . . . . . . . . . . . . 97 Get Multiple Block Security Status frame exchange between VCD and M24LR04E-R . . . 99 Write-sector Password frame exchange between VCD and M24LR04E-R . . . . . . . . . . . 100 Lock-sector frame exchange between VCD and M24LR04E-R . . . . . . . . . . . . . . . . . . . . 102 Present-sector Password frame exchange between VCD and M24LR04E-R . . . . . . . . . 104 Fast Read Single Block frame exchange between VCD and M24LR04E-R. . . . . . . . . . . 106 Fast Initiate frame exchange between VCD and M24LR04E-R . . . . . . . . . . . . . . . . . . . . 108 Fast Read Multiple Block frame exchange between VCD and M24LR04E-R . . . . . . . . . 110 Initiate frame exchange between VCD and M24LR04E-R . . . . . . . . . . . . . . . . . . . . . . . . 112 ReadCfg frame exchange between VCD and M24LR04E-R . . . . . . . . . . . . . . . . . . . . . . 113 WriteEHCfg frame exchange between VCD and M24LR04E-R . . . . . . . . . . . . . . . . . . . . 115 WriteDOCfg frame exchange between VCD and M24LR04E-R. . . . . . . . . . . . . . . . . . . . 116 SetRstEHEn frame exchange between VCD and M24LR04E-R . . . . . . . . . . . . . . . . . . . 118 CheckEHEn frame exchange between VCD and M24LR04E-R. . . . . . . . . . . . . . . . . . . . 119 AC test measurement I/O waveform. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121 I2C AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 ASK modulated signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 Vout vs. Isink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129 Range 11 domain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129 Range 10 domain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 Range 01 domain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 Range 00 domain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131 SO8N – 8-lead plastic small outline, 150 mils body width, package outline . . . . . . . . . . . 132 SO8N – 8-lead plastic small outline, 150 mils body width, package recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 UFDFN8 - 8-lead, 2 × 3 mm, 0.5 mm pitch ultra thin profile fine pitch dual flat package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 TSSOP8 – 8-lead thin shrink small outline, 3 x 6.4 mm, 0.65 mm pitch, package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 DocID022208 Rev 11 M24LR04E-R 1 Description Description The M24LR04E-R device is a Dynamic NFC/RFID tag IC with a dual-interface, electrically erasable programmable memory (EEPROM). The logic scheme is shown in Figure 1. It features an I2C interface and can be operated from a VCC power supply. It is also a contactless memory powered by the received carrier electromagnetic wave. The M24LR04E-R is organized as 512 × 8 bits in the I2C mode and as 128 × 32 bits in RF mode. The M24LR04E-R also features an energy harvesting analog output, as well as a userconfigurable digital output pin toggling during either RF write in progress or RF busy mode. Figure 1. Logic diagram 9&& 6&/ 9RXW 6'$ 0/5(5 $& 5):,3%86< $& 966 069 I2C uses a two-wire serial interface, comprising a bidirectional data line and a clock line. The devices carry a built-in 4-bit device type identifier code (1010) in accordance with the I2C bus definition. The device behaves as a slave in the I2C protocol, with all memory operations synchronized by the serial clock. Read and Write operations are initiated by a Start condition, generated by the bus master. The Start condition is followed by a device select code and Read/Write bit (RW) (as described in Table 2), terminated by an acknowledge bit. When writing data to the memory, the device inserts an acknowledge bit during the 9th bit time, following the bus master’s 8-bit transmission. When data is read by the bus master, the bus master acknowledges the receipt of the data byte in the same way. Data transfers are terminated by a Stop condition after an Ack for Write, and after a NoAck for Read. In the ISO15693/ISO18000-3 mode 1 RF mode, the M24LR04E-R is accessed via the 13.56 MHz carrier electromagnetic wave on which incoming data are demodulated from the received signal amplitude modulation (ASK: amplitude shift keying). When connected to an antenna, the operating power is derived from the RF energy and no external power supply is required. The received ASK wave is 10% or 100% modulated with a data rate of 1.6 Kbit/s using the 1/256 pulse coding mode or a data rate of 26 Kbit/s using the 1/4 pulse coding mode. Outgoing data are generated by the M24LR04E-R load variation using Manchester coding with one or two subcarrier frequencies at 423 kHz and 484 kHz. Data are transferred from the M24LR04E-R at 6.6 Kbit/s in low data rate mode and 26 Kbit/s high data rate mode. The DocID022208 Rev 11 13/146 145 Description M24LR04E-R M24LR04E-R supports the 53 Kbit/s fast mode in high data rate mode using one subcarrier frequency at 423 kHz. The M24LR04E-R follows the ISO 15693 and ISO 18000-3 mode 1 recommendation for radio-frequency power and signal interface. The M24LR04E-R provides an Energy harvesting mode on the analog output pin Vout. When the Energy harvesting mode is activated, the M24LR04E-R can output the excess energy coming from the RF field on the Vout analog pin. In case the RF field strength is insufficient or when Energy harvesting mode is disabled, the analog output pin Vout goes into high-Z state and Energy harvesting mode is automatically stopped. The M24LR04E-R features a user configurable digital out pin RF WIP/BUSY that can be used to drive a micro controller interrupt input pin (available only when the M24LR04E-R is correctly powered on the Vcc pin). When configured in the RF write in progress mode (RF WIP mode), the RF WIP/BUSY pin is driven low for the entire duration of the RF internal write operation. When configured in the RF busy mode (RF BUSY mode), the RF WIP/BUSY pin is driven low for the entire duration of the RF command progress. The RF WIP/BUSY pin is an open drain output and must be connected to a pull-up resistor. Table 1. Signal names Signal name Function Direction Vout Energy harvesting Output Analog output SDA Serial Data I/O SCL Serial Clock Input AC0, AC1 Antenna coils I/O VCC Supply voltage - RF WIP/BUSY Digital signal Digital output VSS Ground - Figure 2. 8-pin package connections 9RXW   9&& $&   5):,3%86< $&   6&/ 966   6'$ 069 1. See Section 31 for package dimensions, and how to identify pin-1. 14/146 DocID022208 Rev 11 M24LR04E-R Signal descriptions 2 Signal descriptions 2.1 Serial clock (SCL) This input signal is used to strobe all data in and out of the device. In applications where this signal is used by slave devices to synchronize the bus to a slower clock, the bus master must have an open drain output, and a pull-up resistor must be connected from Serial Clock (SCL) to VCC. (Figure 3 indicates how the value of the pull-up resistor can be calculated). In most applications, though, this method of synchronization is not employed, and so the pullup resistor is not necessary, provided that the bus master has a push-pull (rather than open drain) output. 2.2 Serial data (SDA) This bidirectional signal is used to transfer data in or out of the device. It is an open drain output that may be wire-OR’ed with other open drain or open collector signals on the bus. A pull up resistor must be connected from Serial Data (SDA) to VCC. (Figure 3 indicates how the value of the pull-up resistor can be calculated). 2.3 RF Write in progress / RF Busy (RF WIP/BUSY) This configurable output signal is used either to indicate that the M24LR04E-R is executing an internal write cycle from the RF channel or that an RF command is in progress. RF WIP and signals are available only when the M24LR04E-R is powered by the Vcc pin. It is an open drain output and a pull up resistor must be connected from RF WIP/BUSY to VCC. 2.4 Energy harvesting analog output (Vout) This analog output pin is used to deliver the analog voltage Vout available when the Energy harvesting mode is enabled and the RF field strength is sufficient. When the Energy harvesting mode is disabled or the RF field strength is not sufficient, the energy harvesting analog voltage output Vout is in high-Z state. 2.5 Antenna coil (AC0, AC1) These inputs are used to connect the device to an external coil exclusively. It is advised not to connect any other DC or AC path to AC0 or AC1. When correctly tuned, the coil is used to power and access the device using the ISO 15693 and ISO 18000-3 mode 1 protocols. 2.5.1 Device reset in RF mode To ensure a proper reset of the RF circuitry, the RF field must be turned off (100% modulation) for a minimum tRF_OFF period of time. DocID022208 Rev 11 15/146 145 Signal descriptions 2.6 M24LR04E-R VSS ground VSS is the reference for the VCC supply voltage and Vout analog output voltage. 2.7 Supply voltage (VCC) This pin can be connected to an external DC supply voltage. Note: An internal voltage regulator allows the external voltage applied on VCC to supply the M24LR04E-R, while preventing the internal power supply (rectified RF waveforms) to output a DC voltage on the VCC pin. 2.7.1 Operating supply voltage VCC Prior to selecting the memory and issuing instructions to it, a valid and stable VCC voltage within the specified [VCC(min), VCC(max)] range must be applied (see Table 118). To maintain a stable DC supply voltage, it is recommended to decouple the VCC line with a suitable capacitor (usually of the order of 10 nF) close to the VCC/VSS package pins. This voltage must remain stable and valid until the end of the transmission of the instruction and, for a Write instruction, until the completion of the internal I²C write cycle (tW). 2.7.2 Power-up conditions When the power supply is turned on, VCC rises from VSS to VCC. The VCC rise time must not vary faster than 1V/µs. 2.7.3 Device reset in I²C mode In order to prevent inadvertent write operations during power-up, a power-on reset (POR) circuit is included. At power-up (continuous rise of VCC), the device does not respond to any I²C instruction until VCC has reached the power-on reset threshold voltage (this threshold is lower than the minimum VCC operating voltage defined in Table 118). When VCC passes over the POR threshold, the device is reset and enters the Standby power mode. However, the device must not be accessed until VCC has reached a valid and stable VCC voltage within the specified [VCC(min), VCC(max)] range. In a similar way, during power-down (continuous decrease in VCC), as soon as VCC drops below the power-on reset threshold voltage, the device stops responding to any instruction sent to it. 2.7.4 Power-down conditions During power-down (continuous decay of VCC), the device must be in Standby power mode (mode reached after decoding a Stop condition, assuming that there is no internal write cycle in progress). 16/146 DocID022208 Rev 11 M24LR04E-R Signal descriptions "USLINEPULL UPRESISTOR K Figure 3. I2C Fast mode (fC = 400 kHz): maximum Rbus value vs. bus parasitic capacitance (Cbus)  2 BU S §  (ERE2BUS §#BUSNS K½ 4HE2X#TIMECONSTANT BUS BUS MUSTBEBELOWTHENS TIMECONSTANTLINEREPRESENTED ONTHELEFT 6## # BU S  2BUS  N S )£#BUS MASTER 3#, -XXX 3$!  P&   "USLINECAPACITORP&  #BUS AIB Figure 4. I2C bus protocol DocID022208 Rev 11 17/146 145 Signal descriptions M24LR04E-R Table 2. Device select code Device type identifier(1) Chip Enable address RW Device select code b7 b6 b5 b4 b3 b2 b1 b0 1 0 1 0 E2(2) 1 1 RW 1. The most significant bit, b7, is sent first. 2. E2 is not connected to any external pin. It is however used to address the M24LR04E-R as described in Section 3 and Section 4. Table 3. Address most significant byte b15 b14 b13 b12 b11 b10 b9 b8 b1 b0 Table 4. Address least significant byte b7 18/146 b6 b5 b4 DocID022208 Rev 11 b3 b2 M24LR04E-R User memory organization The M24LR04E-R is divided into four sectors of 32 blocks of 32 bits, as shown in Table 5. Figure 6 shows the memory sector organization. Each sector can be individually readand/or write-protected using a specific password command. Read and write operations are possible if the addressed data are not in a protected sector. The M24LR04E-R also has a 64-bit block that is used to store the 64-bit unique identifier (UID). The UID is compliant with the ISO 15963 description, and its value is used during the anticollision sequence (Inventory). This block is not accessible by the user in RF device operation and its value is written by ST on the production line. The M24LR04E-R includes an AFI register that stores the application family identifier, and a DSFID register that stores the data storage family identifier used in the anticollision algorithm. The M24LR04E-R has four 32-bit blocks that store an I2C password plus three RF password codes. Figure 5. Circuit diagram 9RXW 5RZGHFRGHU 3 User memory organization $& ((3520 5):,3%86< /DWFK 5) /RJLF ,& 5)9&& 3RZHUPDQDJHPHQW &RQWDFW9&& 6&/ 6'$ $& 9&& 966 069 DocID022208 Rev 11 19/146 145 User memory organization M24LR04E-R Figure 6. Memory sector organization 6HFWRUVHFXULW\ VWDWXV 6HFWRU $UHD     .ELW((3520VHFWRU .ELW((3520VHFWRU .ELW((3520VHFWRU .ELW((3520VHFWRU ELWV ,ð&SDVVZRUG 5)SDVVZRUG 5)SDVVZRUG 5)SDVVZRUG ELW'6),' ELW$), ELW8,' ELWFRQILJXUDWLRQ 6\VWHP ELW,ð&:ULWH/RFNBELW ELW666 6\VWHP 6\VWHP ELWV ELWV ELWV 6\VWHP 6\VWHP 6\VWHP 6\VWHP 6\VWHP 6\VWHP 069 Sector details The M24LR04E-R user memory is divided into four sectors. Each sector contains 1024 bits. The protection scheme is described in Section 4: System memory area. In RF mode, a sector provides 32 blocks of 32 bits. Each read and write access is done by block. Read and write block accesses are controlled by a Sector Security Status byte that defines the access rights to the 32 blocks contained in the sector. If the sector is not protected, a Write command updates the complete 32 bits of the selected block. In I2C mode, a sector provides 128 bytes that can be individually accessed in Read and Write modes. When protected by the corresponding I2C_Write_Lock bit, the entire sector is write-protected. To access the user memory, the device select code used for any I2C command must have the E2 Chip Enable address at 0. 20/146 DocID022208 Rev 11 M24LR04E-R User memory organization Table 5. Sector details Sector number 0 RF block address I2C byte address Bits [31:24] Bits [23:16] Bits [15:8] Bits [7:0] 0 0 user user user user 1 4 user user user user 2 8 user user user user 3 12 user user user user 4 16 user user user user 5 20 user user user user 6 24 user user user user 7 28 user user user user 8 32 user user user user 9 36 user user user user 10 40 user user user user 11 44 user user user user 12 48 user user user user 13 52 user user user user 14 56 user user user user 15 60 user user user user 16 64 user user user user 17 68 user user user user 18 72 user user user user 19 76 user user user user 20 80 user user user user 21 84 user user user user 22 88 user user user user 23 92 user user user user 24 96 user user user user 25 100 user user user user 26 104 user user user user 27 108 user user user user 28 112 user user user user 29 116 user user user user 30 120 user user user user 31 124 user user user user DocID022208 Rev 11 21/146 145 User memory organization M24LR04E-R Table 5. Sector details (continued) Sector number 1 2 3 22/146 RF block address I2C byte address Bits [31:24] Bits [23:16] Bits [15:8] Bits [7:0] 32 128 user user user user 33 132 user user user user 34 136 user user user user 35 140 user user user user 36 144 user user user user 37 148 user user user user 38 152 user user user user 39 156 user user user user ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 127 508 user user user user DocID022208 Rev 11 M24LR04E-R System memory area 4 System memory area 4.1 M24LR04E-R block security in RF mode The M24LR04E-R provides a special protection mechanism based on passwords. In RF mode, each memory sector of the M24LR04E-R can be individually protected by one out of three available passwords, and each sector can also have Read/Write access conditions set. Each memory sector of the M24LR04E-R is assigned with a Sector security status byte including a Sector Lock bit, two Password Control bits and two Read/Write protection bits, as shown in Table 7. Table 6 describes the organization of the Sector security status byte, which can be read using the Read Single Block and Read Multiple Block commands with the Option_flag set to 1. On delivery, the default value of the SSS bytes is set to 00h. Table 6. Sector security status byte area I2C byte address E2 = 1 Bits [31:24] Bits [23:16] Bits [15:8] Bits [7:0] SSS 3 SSS 2 SSS 1 SSS 0 0 Table 7. Sector security status byte organization b7 b6 b5 0 0 0 b4 b3 Password control bits b2 b1 Read / Write protection bits b0 Sector Lock When the Sector Lock bit is set to 1, for instance by issuing a Lock-sector command, the two Read/Write protection bits (b1, b2) are used to set the Read/Write access of the sector as described in Table 8. Table 8. Read / Write protection bit setting Sector Lock b2, b1 Sector access when password presented Sector access when password not presented 0 xx Read Write Read Write 1 00 Read Write Read No Write 1 01 Read Write Read Write 1 10 Read Write No Read No Write 1 11 Read No Write No Read No Write The next two bits of the Sector security status byte (b3, b4) are the password control bits. The value of these two bits is used to link a password to the sector, as defined in Table 9. DocID022208 Rev 11 23/146 145 System memory area M24LR04E-R Table 9. Password control bits b4, b3 Password 00 The sector is not protected by a password. 01 The sector is protected by password 1. 10 The sector is protected by password 2. 11 The sector is protected by password 3. The M24LR04E-R password protection is organized around a dedicated set of commands, plus a system area of three password blocks where the password values are stored. This system area is described in Table 10. Table 10. Password system area Add 1 Password 1 2 Password 2 3 Password 3 The dedicated commands for protection in RF mode are: • Write-sector password: The Write-sector password command is used to write a 32-bit block into the password system area. This command must be used to update password values. After the write cycle, the new password value is automatically activated. It is possible to modify a password value after issuing a valid Present-sector password command. On delivery, the three default password values are set to 0000 0000h and are activated. • Lock-sector: The Lock-sector command is used to set the sector security status byte of the selected sector. Bits b4 to b1 of the sector security status byte are affected by the Lock-sector command. The sector lock bit, b0, is set to 1 automatically. After issuing a Lock-sector command, the protection settings of the selected sector are activated. The protection of a locked block cannot be changed in RF mode. A Lock-sector command sent to a locked sector returns an error code. 24/146 DocID022208 Rev 11 M24LR04E-R • System memory area Present-sector password: The Present-sector password command is used to present one of the three passwords to the M24LR04E-R in order to modify the access rights of all the memory sectors linked to that password (Table 8) including the password itself. If the presented password is correct, the access rights remain activated until the tag is powered off or until a new Present-sector password command is issued. If the presented password value is not correct, all the access rights of all the memory sectors are deactivated. • Sector security status byte area access conditions in I2C mode: In I2C mode, read access to the sector security status byte area is always allowed. Write access depends on the correct presentation of the I2C password (see Section 5.16.1: I2C present password command description). To access the Sector security status byte area, the device select code used for any I2C command must have the E2 Chip Enable address at 1. An I2C write access to a sector security status byte re-initializes the RF access condition to the given memory sector. 4.1.1 Example of the M24LR04E-R security protection in RF mode Table 11 and Table 12 show the sector security protections before and after a valid Present-sector password command. Table 11 shows the sector access rights of an M24LR04E-R after power-up. After a valid Present-sector password command with password 1, the memory sector access is changed as shown in Table 12. Table 11. M24LR04E-R sector security protection after power-up Sector security status byte Sector address Protection b7b6b5 b4 b3 b2 b1 b0 0 Protection: standard Read No Write xxx 0 0 0 0 1 1 Protection: password 1 Read No Write xxx 0 1 0 0 1 2 Protection: password 1 Read Write xxx 0 1 0 1 1 3 Protection: password 1 No Read No Write xxx 0 1 1 0 1 4 Protection: password 1 No Read No Write xxx 0 1 1 1 1 Table 12. M24LR04E-R sector security protection after a valid presentation of password 1 Sector security status byte Sector address Protection b7b6b5 b4 b3 b2 b1 b0 0 Protection: standard Read No Write xxx 0 0 0 0 1 1 Protection: password 1 Read Write xxx 0 1 0 0 1 2 Protection: password 1 Read Write xxx 0 1 0 1 1 3 Protection: password 1 Read Write xxx 0 1 1 0 1 4 Protection: password 1 Read No Write xxx 0 1 1 1 1 DocID022208 Rev 11 25/146 145 System memory area 4.2 M24LR04E-R M24LR04E-R block security in I²C mode (I2C_Write_Lock bit area) In the I2C mode only, it is possible to protect individual sectors against Write operations. This feature is controlled by the I2C_Write_Lock bits stored in the two bytes of the I2C_Write_Lock bit area. I2C_Write_Lock bit area starts from location 2048 (see Table 13). To access the I2C_Write_Lock bit area, the device select code used for any I2C command must have the E2 Chip Enable address at 1. Using these 16 bits, it is possible to write-protect all the four sectors of the M24LR04E-R memory. Each bit controls the I2C write access to a specific sector as shown in Table 13. It is always possible to unprotect a sector in the I2C mode. When an I2C_Write_Lock bit is reset to 0, the corresponding sector is unprotected. When the bit is set to 1, the corresponding sector is write-protected. In I2C mode, read access to the I2C_Write_Lock bit area is always allowed. Write access depends on the correct presentation of the I2C password. On delivery, the default value of the two bytes of the I2C_Write_Lock bit area is reset to 00h. Table 13. I2C_Write_Lock bit I2C byte address E2 = 1 4.3 2048 Bits [4:15] Bits [3:0] Don’t care Sectors 0-3 Configuration byte and Control register The M24LR04E-R offers an 8-bit non-volatile Configuration byte located at I²C location 2320 of the system area used to store the RF WIP/BUSY pin and the energy harvesting configuration (see Table 14). The M24LR04E-R also offers an 8-bit volatile Control register located at I²C location 2336 of the system area used to store the energy harvesting enable bit as well as a FIELD_ON bit indicator (see Table 15). 4.3.1 RF WIP/BUSY pin configuration The M24LR04E-R features a configurable open drain output RF WIP/BUSY pin used to provide RF activity information to an external device. The RF WIP/BUSY pin functionality depends on the value of bit 3 of the Configuration byte. • RF busy mode When bit 3 of the Configuration byte is set to 0, the RF WIP/BUSY pin is configured in RF busy mode. The purpose of this mode is to indicate to the I²C bus master whether the M24LR04E-R is busy in RF mode or not. In this mode, the RF WIP/BUSY pin is tied to 0 from the RF command Start Of Frame (SOF) until the end of the command execution. If a bad RF command is received, the RF WIP/BUSY pin is tied to 0 from the RF command SOF until the reception of the RF command CRC. Otherwise, the RF WIP/BUSY pin is in high-Z state. 26/146 DocID022208 Rev 11 M24LR04E-R System memory area When tied to 0, the RF WIP/BUSY signal returns to high-Z state if the RF field is cut-off. During execution of I²C commands, the RF WIP/BUSY pin remains in high-Z state. • RF Write in progress When bit 3 of the Configuration byte is set to 1, the RF WIP/BUSY pin is configured in RF Write in progress mode. The purpose of this mode is to indicate to the I²C bus master that some data have been changed in RF mode. In this mode, the RF WIP/BUSY pin is tied to 0 for the duration of an internal write operation (i.e. between the end of a valid RF write command and the beginning of the RF answer). During execution of I²C write operations, the RF WIP/BUSY pin remains in high-Z state. 4.3.2 Energy harvesting configuration The M24LR04E-R features an Energy harvesting mode on the Vout analog output. The general purpose of the Energy harvesting mode is to deliver a part of the nonnecessary RF power received by the M24LR04E-R on the AC0-AC1 RF input in order to supply an external device. The current consumption on the analog voltage output Vout is limited to ensure that the M24LR04E-R is correctly supplied during the powering of the external device. When the Energy harvesting mode is enabled and the power delivered on the AC0-AC1 RF input exceeds the minimum required PAC0-AC1_min, the M24LR04E-R is able to deliver a limited and unregulated voltage on the Vout pin, assuming the current consumption on the Vout does not exceed the Isink_max maximum value. If one of the condition above is not met, the analog voltage output pin Vout is set in high-Z state. For robust applications using the Energy harvesting mode, four current fan-out levels can be chosen. • Vout sink current configuration The sink current level is chosen by programming EH_cfg1 and EH_cfg0 into the Configuration byte (see Table 14). The minimum power level required on AC0-AC1 RF input PAC0-AC1_min, the delivered voltage Vout, as well as the maximum current consumption Isink_max on the Vout pin corresponding to the bit values are described in Table 126. Table 14. Configuration byte I2C byte address Bit 7 Bit 6 Bit 5 Bit 4 E2=1 2320 X(1) X(1) X(1) X(1) Bit 3 RF WIP/BUSY Bit 2 BIT 1 BIT 0 EH_mode EH_cfg1 EH_cfg0 1. Bit 7 to Bit 4 are don’t care bits. DocID022208 Rev 11 27/146 145 System memory area • M24LR04E-R Energy harvesting enable control Delivery of Energy harvesting analog output voltage on the Vout pin depends on the value of the EH_enable bit of the volatile Control register (see Table 15). Table 15. Control register 2 I C byte address E2=1 2336 Bit 7 Bit 6 T-Prog(1) 0(1) Bit 5 Bit 4 Bit 3 Bit 2 0(1) 0(1) 0(1) 0(1) BIT 1 BIT 0 FIELD_ON(1) EH_enable 1. Bit 7 to Bit 1 are read-only bits. • – When set to 1, the EH_enable bit enables the Energy harvesting mode, meaning that the Vout analog output signal is delivered when the PAC0-AC1_min and Isink_max conditions corresponding to the chosen sink current configuration bit are met (see Table 126). – When set to 0, the EH_enable bit disable the Energy harvesting mode and the analog output Vout remains in set in high-Z state. – The T_Prog flag indicates a correct duration of the I²C write time (tw). This bit is reset to 0 after POR and at the beginning of each writing cycle; it is set to 1 only after a correct completion of the writing cycle. Energy harvesting default mode control At power-up, in I²C or RF mode, the EH_enable bit is updated according to the value of the EH_mode bit stored in the non-volatile Configuration byte (see Table 16). In other words, the EH_mode bit is used to configure whether the Energy harvesting mode is enabled or not by default. Table 16. EH_enable bit value after power-up 4.3.3 Energy harvesting EH_mode value EH_enable after power-up 0 1 enabled 1 0 disabled after power-up FIELD_ON indicator bit The FIELD_ON bit indicator located as Bit 1 of the Control register is a read-only bit used to indicate when the RF power level delivered to the M24LR04E-R is sufficient to execute RF commands. Note: 28/146 • When FIELD_ON = 0, the M24LR04E-R is not able to execute any RF commands. • When FIELD_ON =1, the M24LR04E-R is able to execute any RF commands. During read access to the Control register in RF mode, the FIELD_ON bit is always read at 1. DocID022208 Rev 11 M24LR04E-R 4.3.4 System memory area Configuration byte access in I²C and RF modes In I²C mode, read and write accesses to the non-volatile Configuration byte are always allowed. To access the Configuration byte, the device select code used for any I²C command must have the E2 Chip enable address at 1. The dedicated commands to access the Configuration byte in RF mode are: • Read configuration byte command (ReadCfg): The ReadCfg command is used to read the eight bits of the Configuration byte. • Write energy harvesting configuration command (WriteEHCfg): The WriteEHCfg command is used to write the EH_mode, EH_cfg1 and EH_cfg0 bits into the Configuration byte. • Write RF WIP/BUSY pin configuration command (WriteDOCfg): The WriteDOCfg command is used to write the RF WIP/BUSY bit into the Configuration byte. After any write access to the Configuration byte, the new configuration is automatically applied. 4.3.5 Control register access in I²C or RF mode In I²C mode, read and write accesses to the volatile Control register are always allowed. To access the Control register, the device select code used for any I²C command must have the E2 Chip enable address at 1. The dedicated commands to access the Control register in RF mode are: • Check energy harvesting enable bit command (CheckEHEn): The CheckEHEn command is used to read the eight bits of the Control register. When it is run, the FIELD_ON bit is always read at 1. • Set/reset energy harvesting enable bit command (SetRstEHEn): The SetRstEHEn command is used to set or reset the value of the EH_enable bit into the Control register. 4.4 ISO 15693 system parameters The M24LR04E-R provides the system area required by the ISO 15693 RF protocol, as shown in Table 17. The first 32-bit block starting from I2C address 2304 stores the I2C password. This password is used to activate/deactivate the write protection of the protected sector in I2C mode. At power-on, all user memory sectors protected by the I2C_Write_Lock bits can be read but cannot be modified. To remove the write protection, it is necessary to use the I2C present password described in Figure 12. When the password is correctly presented — that is, when all the presented bits correspond to the stored ones — it is also possible to modify the I2C password using the I2C write password command described in Figure 13. The next three 32-bit blocks store the three RF passwords. These passwords are neither read- nor write- accessible in the I2C mode. DocID022208 Rev 11 29/146 145 System memory area M24LR04E-R The next byte stores the Configuration byte, at I²C location 2320. This Control register is used to store the three energy harvesting configuration bits and the RF WIP/BUSY configuration bit. The next two bytes are used to store the AFI, at I2C location 2322, and the DSFID, at I2C location 2323. These two values are used during the RF inventory sequence. They are read-only in the I2C mode. The next eight bytes, starting from location 2324, store the 64-bit UID programmed by ST on the production line. Bytes at I2C locations 2332 to 2335 store the IC Ref and the Mem_Size data used by the RF Get_System_Info command. The UID, Mem_Size and IC ref values are read-only data. Table 17. System parameter sector I2C byte address Bits [31:24] Bits [23:16] Bits [15:8] I 2C Bits [7:0] password(1) E2 = 1 2304 E2 = 1 2308 RF password 1(1) E2 = 1 2312 RF password 2(1) E2 = 1 2316 RF password 3(1) E2 = 1 2320 DSFID (FFh) AFI (00h) ST reserved (Exh)(2) Configuration byte (F4h) E2 = 1 2324 UID UID UID UID E2 = 1 2328 UID (E0h) UID (02h) UID UID E2 = 1 2332 RFU (FFh) Mem_Size (03 7F) - IC Ref (5A) E2 = 1 2336 - - - Programming. completion and Energy harvesting status(3) 1. Delivery state: I2C password= 0000 0000h, RF password = 0000 0000h, Configuration byte = F4h 2. The product revision is the Most significant nibble of the byte located at address 0x911 (2321 d) in the system area (Device select code E2 =1). From Rev 6, the product revision value is 0xE. The Least significant nibble is ST reserved. 3. Address system 2336 (920h, E2=1) is the control register. Bit 7 is T_Prog (refer to Table 15). When accessed in RF, this bit is not significant and set to 0. Bits 2-6 are RFU and set to 0. Bit 1 is FIELD_ON (refer to Table 15). Bit 0 is EH_enable (refer to Table 15). 30/146 DocID022208 Rev 11 I2C device operation M24LR04E-R 5 I2C device operation The device supports the I2C protocol. This is summarized in Figure 4. Any device that sends data to the bus is defined as a transmitter, and any device that reads data is defined as a receiver. The device that controls the data transfer is known as the bus master, and the other as the slave device. A data transfer can only be initiated by the bus master, which also provides the serial clock for synchronization. The M24LR04E-R device is a slave in all communications. 5.1 Start condition Start is identified by a falling edge of serial data (SDA) while the serial clock (SCL) is stable in the high state. A Start condition must precede any data transfer command. The device continuously monitors (except during a write cycle) the SDA and the SCL for a Start condition, and does not respond unless one is given. 5.2 Stop condition Stop is identified by a rising edge of serial data (SDA) while the serial clock (SCL) is stable and driven high. A Stop condition terminates communication between the device and the bus master. A Read command that is followed by NoAck can be followed by a Stop condition to force the device into the Standby mode. A Stop condition at the end of a Write command triggers the internal write cycle. 5.3 Acknowledge bit (ACK) The acknowledge bit is used to indicate a successful byte transfer. The bus transmitter, whether it be bus master or slave device, releases the serial data (SDA) after sending eight bits of data. During the 9th clock pulse period, the receiver pulls the SDA low to acknowledge the receipt of the eight data bits. 5.4 Data input During data input, the device samples serial data (SDA) on the rising edge of the serial clock (SCL). For correct device operation, the SDA must be stable during the rising edge of the SCL, and the SDA signal must change only when the SCL is driven low. 5.5 I²C timeout During the execution of an I²C operation, RF communications are not possible. To prevent RF communication freezing due to inadvertent unterminated instructions sent to the I²C bus, the M24LR04E-R features a timeout mechanism that automatically resets the I²C logic block. DocID022208 Rev 11 31/146 145 I2C device operation 5.5.1 M24LR04E-R I²C timeout on Start condition I²C communication with the M24LR04E-R starts with a valid Start condition, followed by a device select code. If the delay between the Start condition and the following rising edge of the Serial Clock (SCL) that samples the most significant of the Device Select exceeds the tSTART_OUT time (see Table 122), the I²C logic block is reset and further incoming data transfer is ignored until the next valid Start Condition. Figure 7. I²C timeout on Start condition 6&/ 6'$ 6WDUWFRQGLWLRQ W67$57B287 069 5.5.2 I²C timeout on clock period During data transfer on the I²C bus, the serial clock high pulse width High (tCHCL) or serial clock pulse width Low (tCLCH) exceeds the maximum value specified in Table 122, the I²C logic block is reset and any further incoming data transfer is ignored until the next valid Start condition. 5.6 Memory addressing To start communication between the bus master and the slave device, the bus master must initiate a Start condition. Following this, the bus master sends the device select code (shown in Table 2) on SDA, most significant bit first). Only one memory device can be connected on a single I²C bus. In M24LR04E-R, E1 and E0 are internally set to 1. The eighth bit is the Read/Write bit (RW). It is set to 1 for Read and to 0 for Write operations. If a match occurs on the device select code, the corresponding device gives an acknowledgment on serial data (SDA) during the ninth bit time. If the device does not match the device select code, it deselects itself from the bus, and goes into Standby mode. 32/146 DocID022208 Rev 11 I2C device operation M24LR04E-R Table 18. Operating modes Mode Current address read RW bit Bytes 1 1 0 Random address read Initial sequence Start, device select, RW = 1 Start, device select, RW = 0, address 1 1 reStart, device select, RW = 1 Sequential read 1 ≥1 Byte write 0 1 Start, device select, RW = 0 Page write 0 ≤ 4 bytes Start, device select, RW = 0 Similar to current or random address read Figure 8. Write mode sequences with I2C_Write_Lock bit = 1 (data write inhibited) %\WH:ULWH $&. %\WHDGGUHVV $&. %\WHDGGUHVV 12$&. 'DWDLQ 6WRS 6WDUW 'HYVHOHFW $&. 5: 3DJH:ULWH 6WDUW 'HYVHOHFW $&. %\WHDGGUHVV $&. %\WHDGGUHVV 12$&. 'DWDLQ 'DWDLQ 12$&. 12$&. 12$&. 'DWDLQ1 6WRS $&. 5: 069 DocID022208 Rev 11 33/146 145 I2C device operation 5.7 M24LR04E-R Write operations Following a Start condition, the bus master sends a device select code with the Read/Write bit (RW) reset to 0. The device acknowledges this, as shown in Figure 8, and waits for two address bytes. The device responds to each address byte with an acknowledge bit, and then waits for the data byte. Writing to the memory may be inhibited if the I2C_Write_Lock bit = 1. A Write instruction issued with the I2C_Write_Lock bit = 1 and with no I2C_Password presented does not modify the memory contents, and the accompanying data bytes are not acknowledged, as shown in Figure 8. Each data byte in the memory has a 16-bit (two byte wide) address. The most significant byte (Table 3) is sent first, followed by the least significant byte (Table 4). Bits b15 to b0 form the address of the byte in memory. When the bus master generates a Stop condition immediately after the Ack bit (in the tenthbit time slot), either at the end of a byte write or a page write, the internal write cycle is triggered. A Stop condition at any other time slot does not trigger the internal write cycle. After the Stop condition, the delay tW, and the successful completion of a Write operation, the device’s internal address counter is incremented automatically, to point to the next byte address after the last one that was modified. During the internal write cycle, the serial data (SDA) signal is disabled internally, and the device does not respond to any requests. 5.8 Byte write After the device select code and the address bytes, the bus master sends one data byte. If the addressed location is write-protected by the I2C_Write_Lock bit (= 1), the device replies with NoAck, and the location is not modified. If the addressed location is not write-protected, the device replies with Ack. The bus master terminates the transfer by generating a Stop condition, as shown in Figure 9. 5.9 Page write The Page write mode allows up to four bytes to be written in a single write cycle, provided that they are all located in the same “row” in the memory: that is, the most significant memory address bits (b12-b2) are the same. If more bytes are sent than fit up to the end of the row, a condition known as “roll-over” occurs. This should be avoided, as data starts to become overwritten in an implementation-dependent way. The bus master sends from one to four bytes of data, each of which is acknowledged by the device if the I2C_Write_Lock bit = 0 or the I2C_Password was correctly presented. If the I2C_Write_Lock_bit = 1 and the I2C_password are not presented, the contents of the addressed memory location are not modified, and each data byte is followed by a NoAck. After each byte is transferred, the internal byte address counter (inside the page) is incremented. The transfer is terminated by the bus master generating a Stop condition. 34/146 DocID022208 Rev 11 I2C device operation M24LR04E-R Figure 9. Write mode sequences with I2C_Write_Lock bit = 0 (data write enabled) !#+ "YTEADDRESS "YTEADDRESS !#+ $ATAIN 27 !#+ !#+ "YTEADDRESS !#+ "YTEADDRESS !#+ !#+ $ATAIN. $ATAIN $ATAIN !#+ 3TOP $EV3ELECT 3TART 0AGE7RITE !#+ 3TOP $EV3ELECT 3TART "YTE7RITE !#+ 27 !) Figure 10. Write cycle polling flowchart using Ack :ULWHF\FOHLQSURJUHVV 6WDUWFRQGLWLRQ 'HYLFHVHOHFWZLWK5:  1R )LUVWE\WHRILQVWUXFWLRQ ZLWK5: DOUHDG\ GHFRGHGE\WKHGHYLFH 1R $FNUHWXUQHG