srt512 STMicroelectronics, srt512 Datasheet
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srt512 Summary of contents
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... EEPROM with Write Protect feature READ BLOCK and WRITE BLOCK (32 bits) Internal tuning capacitor 1 million ERASE/WRITE cycles 40-year data retention Self-timed programming cycle 5 ms typical programming time Packages – ECOPACK® (RoHS compliant) Applications Transport April 2007 Antenna (A3) Antenna (A4) Antenna (A5) Wafer Rev 2 SRT512 1/49 www.st.com 1 ...
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... Transmission Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.4 CRC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4 Memory mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4.1 EEPROM area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.2 32-bit binary counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.3 EEPROM area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 4.4 System area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.4.1 4.4.2 5 SRT512 operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 6 SRT512 states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 6.1 POWER-OFF state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 6.2 READY state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 6.3 INVENTORY state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 6.4 SELECTED state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 6.5 DESELECTED state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2/49 Character transmission format for Request Frame . . . . . . . . . . . . . . . . . 9 Request Start Of Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Request End Of Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Character transmission format for Answer Frame ...
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... SELECT(Chip_ID) command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 8.5 COMPLETION() command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 8.6 RESET_TO_INVENTORY() command . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 8.7 READ_BLOCK(Addr) command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 8.8 WRITE_BLOCK (Addr, Data) command . . . . . . . . . . . . . . . . . . . . . . . . . 35 8.9 GET_UID() command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 8.10 Power-On state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 9 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 11 Package mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 12 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Appendix A ISO14443 type B CRC calculation . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Appendix B SRT512 command brief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Contents 3/49 ...
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... List of tables List of tables Table 1. Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Table 2. Bit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Table 3. SRT512 memory mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Table 4. Standard anticollision sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Table 5. Command Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Table 6. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Table 7. Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Table 8. DC characteristics Table 9. AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Table 10. A3 antenna specification Table 11. A4 antenna specification Table 12 ...
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... List of figures Figure 1. Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 2. Die floor plan Figure 3. 10% ASK modulation of the received wave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 4. SRT512 Request Frame character format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 5. Request Start Of Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 6. Request End Of Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 7. Wave transmitted using BPSK subcarrier modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 8. Answer Start Of Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 9 ...
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... List of figures Figure 49. SRT512 synchronous timing, transmit and receive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Figure 50. A3 antenna specification Figure 51. A4 antenna specification Figure 52. A5 antenna specification Figure 53. INITIATE frame exchange between Reader and SRT512 . . . . . . . . . . . . . . . . . . . . . . . . . 46 Figure 54. PCALL16 frame exchange between Reader and SRT512 . . . . . . . . . . . . . . . . . . . . . . . . . 46 Figure 55. SLOT_MARKER frame exchange between Reader and SRT512 . . . . . . . . . . . . . . . . . . . 46 Figure 56 ...
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... The SRT512 is a contactless memory, powered by an externally transmitted radio wave. It contains a 512-bit user EEPROM fabricated with STMicroelectronics CMOS technology. The memory is organized as 16 blocks of 32 bits. The SRT512 is accessed via the 13.56 MHz carrier. Incoming data are demodulated and decoded from the received Amplitude Shift Keying (ASK) modulation signal and outgoing data are generated by load variation using Bit Phase Shift Keying (BPSK) coding of a 847 kHz subcarrier ...
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... Signal description The SRT512 contactless EEPROM can be randomly read and written in block mode (each block containing 32 bits). The instruction set includes the following nine commands: READ_BLOCK WRITE_BLOCK INITIATE PCALL16 SLOT_MARKER SELECT COMPLETION RESET_TO_INVENTORY GET_UID The SRT512 memory is organized in three areas, as described in an EEPROM area where all blocks behave as User blocks ...
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... These characters, framed by a Start Of Frame (SOF) and an End Of Frame (EOF), are put together to form a Command Frame as shown in commands, addresses, data, a CRC and an EOF as defined in the ISO14443-3 Type B Standard error is detected during data transfer, the SRT512 does not execute the command, but it does not generate an error frame. Figure 4. ...
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... Figure 5 is composed of Figure 6 is composed of Value The information byte is sent with the least significant bit first b10 SRT512 b11 1 ai07665 ai07666 ...
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... The character format is the same as for input data transfer frames are made SOF, data, a CRC and an EOF transfer error occurs, the reader does not issue an error code to the SRT512, but it should be able to detect it and manage the situation. The data transfer rate is 106 Kbits/second ...
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... After the SRT512 forms the start bit (‘0’) of the Answer SOF. After the falling edge of the Answer EOF, the reader waits a minimum time, t the SRT512. Figure 10. Example of a complete Transmission Frame Sent by the ...
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... The CRC is calculated on all the bytes between SOF (not included) and the CRC field. Upon reception of a Request from a reader, the SRT512 verifies that the CRC value is valid invalid, the SRT512 discards the frame and does not answer the reader. ...
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... Memory mapping 4 Memory mapping The SRT512 is organized as 16 blocks of 32 bits as shown in accessible by the READ_BLOCK command. Depending on the write access, they can be updated by the WRITE_BLOCK command. A WRITE_BLOCK updates all the 32 bits of the block. Table 3. SRT512 memory mapping MSB Block Addr b 31 ...
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... Block b16 b15 b14 User Area User Area User Area User Area User Area 32 (4096 million The SRT512 uses dedicated logic that only allows 32-bit Block b16 b15 b14 32-bit Binary Counter 32-bit Binary Counter Memory mapping LSb Description ...
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... SRT512 ai07661 ...
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... SRT512 4.3 EEPROM area The 9 blocks between addresses 7 and 15 are EEPROM blocks of 32 bits each (36 Bytes in total). (See Figure 15 READ_BLOCK and WRITE_BLOCK commands. The WRITE_BLOCK command for the EEPROM area always includes an Auto-Erase cycle prior to the Write cycle. Blocks can be Write-protected. Write access is controlled by the 9 bits of the OTP_Lock_Reg located at block address 255 (see details) ...
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... The OTP_Lock_Reg bits cannot be erased. Once Write-protected, the blocks behave like ROM blocks and cannot be unprotected. After any modification of the OTP_Lock_Reg bits necessary to send a SELECT command with a valid Chip_ID to the SRT512 in order to load the block write protection into the logic. ...
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... Fixed Chip_ID (Option) The SRT512 is provided with an anticollision feature based on a random 8-bit Chip_ID. Prior to selecting an SRT512, an anticollision sequence has to be run to search for the Chip_ID of the SRT512. This is a very flexible feature, however the searching loop requires time to run. For some applications, much time could be saved by knowing the value of the SRT512 Chip_ID beforehand, so that the SRT512 can be identified and selected directly without having to run an anticollision sequence ...
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... SRT512 (wrong command or CRC error), the memory does not return any error code. When a valid frame is received, the SRT512 may have to return data to the reader. In this case, data is returned using BPSK encoding, in the form of 10-bit characters framed by an SOF and an EOF ...
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... The SRT512 can be switched into different states. Depending on the current state of the SRT512, its logic will only answer to specific commands. These states are mainly used during the anticollision sequence, to identify and to access the SRT512 in a very short time. The SRT512 provides 6 different states, as described in the following paragraphs and in Figure 17 ...
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... SRT512 states 6.6 DEACTIVATED state When in this state, the SRT512 can only be turned off. All commands are ignored. Figure 17. State transition diagram Out of Field DESELECTED 22/49 POWER-OFF Out of Field READY Chip_ID = RND 8bits INITIATE() Out of Field INVENTORY Out of Field SELECT(Chip_ID) RESET_TO_INVENTORY() SELECT(Chip_ID) SELECTED ...
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... SRT512. The purpose of the anticollision sequence is to allow the reader to select one SRT512 at a time. The SRT512 is given an 8-bit Chip_ID value used by the reader to select only one among up to 256 tags present within its field range. The Chip_ID is initialized with a random value during the READY state, or after an INITIATE() command in the INVENTORY state ...
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... Anticollision Figure 19. Description of a possible anticollision sequence 1. The value X in the Answer Chip_ID means a random hexadecimal character from 24/49 SRT512 ...
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... Step 18 After each SLOT_MARKER() command, there may be several, one or no answers from the SRT512 devices. The reader must handle all the cases and store all the Chip_IDs, correctly decoded. At the end of the anticollision sequence, after SLOT_MARKER(15), the reader can start working with one SRT512 by issuing a SELECT() command containing the desired Chip_ID ...
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... Slot0: only one answer 50h Tag7 is identified Slot1: only one answer but already found for tag4 SlotN: no answer All CHIP_SLOT_NUMBERs get a new random value Slot0: only one answer Slot3: only one answer Tag1 is identified All tags are identified SRT512 ai07669 ...
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... SRT512 8 SRT512 commands See the paragraphs below for a detailed description of the Commands available on the SRT512. The commands and their hexadecimal codes are summarized in given in Appendix Table 5. Command Code Hexadecimal Code 06h-00h 06h-04h x6h 08h 09h 0Bh 0Ch 0Eh 0Fh B. INITIATE() PCALL16() ...
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... INITIATE() command, all SRT512 devices in READY state switch to INVENTORY state, set a new 8-bit Chip_ID random value, and return their Chip_ID value. This command is useful when only one SRT512 in READY state is present in the reader field range. It speeds up the Chip_ID search process. The CHIP_SLOT_NUMBER is not used during INITIATE() command access ...
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... SRT512 returns its Chip_ID value. If not, the SRT512 does not send any response. The PCALL16() command, used together with the SLOT_MARKER() command, allows the reader to search for all the Chip_IDs when there are more than one SRT512 device in INVENTORY state present in the reader field range. Figure 24. PCALL16 request format ...
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... On receiving the SLOT_MARKER() command, the SRT512 compares its CHIP_SLOT_NUMBER value with the SLOT_NUMBER value given in the command code. If they match, the SRT512 returns its Chip_ID value. If not, the SRT512 does not send any response. The SLOT_MARKER() command, used together with the PCALL16() command, allows the reader to search for all the Chip_IDs when there are more than one SRT512 device in INVENTORY state present in the reader field range ...
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... Command Code = 0Eh The SELECT() command allows the SRT512 to enter the SELECTED state. Until this command is issued, the SRT512 will not accept any other command, except for INITIATE(), PCALL16() and SLOT_MARKER(). The SELECT() command returns the 8 bits of the Chip_ID value. An SRT512 in SELECTED state, that receives a SELECT() command with a Chip_ID that does not match its own is automatically switched to DESELECTED state ...
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... On receiving the COMPLETION() command, a SRT512 in SELECTED state switches to DEACTIVATED state and stops decoding any new commands. The SRT512 is then locked in this state until a complete reset (tag out of the field range). A new SRT512 can thus be accessed through a SELECT() command without having to remove the previous one from the field ...
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... Command Code = 0Ch On receiving the RESET_TO_INVENTORY() command, all SRT512 devices in SELECTED state revert to INVENTORY state. The concerned SRT512 devices are thus resubmitted to the anticollision sequence. This command is useful when two SRT512 devices with the same 8-bit Chip_ID happen SELECTED state at the same time. Forcing them to go through the anticollision sequence again allows the reader to generates new PCALL16() commands and so, to set new random Chip_IDs ...
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... Bytes contained in the block. Data Bytes are transmitted with the Least Significant Byte first and each byte is transmitted with the least significant bit first. The address byte gives access to the 16 blocks of the SRT512 (addresses 0 to 15). READ_BLOCK commands issued with a block address above 15 will not be interpreted and the SRT512 will not return any response, except for the System area located at address 255 ...
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... Data Bytes are transmitted with the Least Significant Byte first, and each byte is transmitted with the least significant bit first. The address Byte gives access to the 16 blocks of the SRT512 (addresses 0 to 15). WRITE_BLOCK commands issued with a block address above 15 will not be interpreted and the SRT512 will not return any response, except for the System area located at address 255 ...
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... GET_UID() command Command Code = 0Bh On receiving the GET_UID command, the SRT512 returns its 8 UID Bytes. UID Bytes are transmitted with the Least Significant Byte first, and each byte is transmitted with the least significant bit first. The SRT512 must have received a SELECT() command and be switched to SELECTED state before any GET_UID() command can be accepted ...
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... SRT512 Unique Identifier (UID) Members of the SRT512 family are uniquely identified by a 64-bit Unique Identifier (UID). This is used for addressing each SRT512 device uniquely after the anticollision loop. The UID complies with ISO/IEC 15963 and ISO/IEC 7816- read-only code, and ...
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... Electrostatic Discharge Voltage ESD 1. Mil. Std. 883 - Method 3015 2. ESD test: ISO10373-6 for proximity cards 38/49 Parameter Wafer A3, A4, A5 (1) Machine Model Human Body (1) Model Human Body (2) Model SRT512 Min. Max. Unit 15 25 °C 23 months kept in its antistatic bag 15 25 °C 40% 60% RH ...
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... Tuning Frequency: 14.4 MHz. Parameter Parameter Condition ISO10373-6 13.56 MHz (1) Parameter Condition MI=(A-B)/(A+B) ETU = 128/f Coupler to SRT512 Coupler to SRT512 SRT512 to Coupler With no Auto-Erase Cycle With Auto-Erase Cycle (EEPROM) Binary Counter Decrement DC and AC parameters Min. Max. –20 85 Min Typ Max 2.5 3.5 100 250 20 64 ...
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... DC and AC parameters Figure 49. SRT512 synchronous timing, transmit and receive ASK Modulated signal from the Reader to the Contactless device FRAME Transmission between the reader and the contactless device DATA FRAME Transmitted by SRT512 in BPSK Data jitter on FRAME Transmitted by the reader in ASK ...
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... SRT512 11 Package mechanical In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second-level interconnect. The category of Second-Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ...
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... Inlay Length Overall Thickness of Copper Antenna Coil Silicon Thickness Q Unloaded Q Value F Unloaded Free-air Resonance NOM P H-field Energy for Device Operation A 42/ Parameter Type 110 180 30 14.5 SRT512 A1 AI07696B Min Max Unit 14.5 15.5 mm 14.5 15.5 mm 18.5 19.5 mm 18.5 19 130 µm 165 195 µm MHz 1 ...
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... SRT512 Figure 52. A5 antenna specification Table 12. A5 antenna specification Symbol A Coil Width B Coil Length A1 Inlay Width B1 Inlay Length Overall Thickness of Copper Antenna Coil Silicon Thickness Q Unloaded Q Value F Unloaded Free-air Resonance NOM P H-field Energy for Device Operation Parameter Type ...
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... XXX = Given by STMicroelectronics Note: Devices are shipped from the factory with the memory content bits erased to 1. For a list of available options (Speed, Package, etc.) or for further information on any aspect of this device, please contact your nearest ST Sales Office. 44/49 SRT512 – XXX SRT512 ...
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... SRT512 Appendix A ISO14443 type B CRC calculation #include <stdio.h> #include <stdlib.h> #include <string.h> #include <ctype.h> #define BYTE unsigned char #define USHORT unsigned short unsigned short UpdateCrc(BYTE ch, USHORT *lpwCrc (ch^(BYTE)((*lpwCrc) & 0x00FF)); ch = (ch^(ch<<4)); *lpwCrc = (*lpwCrc >> 8)^((USHORT)ch << 8)^((USHORT)ch<<3)^((USHORT)ch>>4); return(*lpwCrc); } void ComputeCrc(char *Data, int Length, BYTE *TransmitFirst, BYTE ...
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... Figure 54. PCALL16 frame exchange between Reader and SRT512 Reader SOF 06h SRT512 Figure 55. SLOT_MARKER frame exchange between Reader and SRT512 Reader SOF SRT512 Figure 56. SELECT frame exchange between Reader and SRT512 Reader SOF 0Eh SRT512 Figure 57. COMPLETION frame exchange between Reader and SRT512 Reader SOF SRT512 ...
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... SRT512 Figure 58. RESET_TO_INVENTORY frame exchange between Reader and SRT512 Reader SOF SRT512 Figure 59. READ_BLOCK frame exchange between Reader and SRT512 Reader SOF 08h ADDR SRT512 Figure 60. WRITE_BLOCK frame exchange between Reader and SRT512 Reader SOF 09h SRT512 Figure 61. GET_UID frame exchange between Reader and SRT512 ...
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... Document status promoted from Preliminary Data to full Datasheet. A3, A4 and A5 antennas added (see page 41). 2 6-bit IC code changed under C min and max values removed, typical value added in TUN DC characteristics. Small text changes. All antennas are ECOPACK® compliant. SRT512 Changes Package mechanical on Unique Identifier (UID) on page 37. Table 8: ...
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... SRT512 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...