T5554 ATMEL [ATMEL Corporation], T5554 Datasheet
T5554
Related parts for T5554
T5554 Summary of contents
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... Modulation: BIN, FSK, PSK, Manchester, Biphase – Other: Terminator Mode, Password Mode, AOR Mode 1. Description The T5554 is a contactless R/W-IDentification IC (IDIC tions in the 125 kHz range. A single coil, connected to the chip, serves as the IC’s power supply and bidirectional communication interface. The coil and chip together form a transponder ...
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... Rectifier to generate a DC supply voltage from the AC coil voltage • Clock extractor • Switchable load between Coil1/Coil2 for data transmission from the IC to the reader unit (read) • Field gap detector for data transmission from the reader unit into the IC (write) T5554 2 Pad Layout of T5554 Coil 1 Coil ...
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... The power-on reset is a delay reset which is triggered when supply voltage is applied. 3.9 Mode Register The mode register stores the mode data from EEPROM block continually refreshed at the start of every block. This increases the reliability of the device (if the originally loaded mode information is false, it will be corrected by subsequent refresh cycles). 4576D–RFID–12/06 T5554 3 ...
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... Stage1 Manchester or Biphase and stage2 PSK, at any PSK carrier frequency – Stage1 Manchester or Biphase and stage2 PSK with bitrate = rf/8 and PSK carrier – Figure 3-2. T5554 4 The following modulation type combinations will not work: (because the first stage output frequency is higher than the second stage strobe frequency) ...
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... Memory The memory of the T5554 is a 264-bit EEPROM, which is arranged in 8 blocks of 33 bits each. All 33 bits of a block, including the lock bit, are programmed simultaneously. The programming voltage is generated on-chip. Block 0 contains the mode data, which are not normally transmitted (see Blocks are freely programmable ...
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... BR Bit Rate MS1 Modulator Stage 1 MS2 Modulator Stage 2 PSKCF PSK Clock Frequency MAXBLK see Maxblock feature reserved do not use * Bit 15 and 24 must always be at "0", otherwise malfunction will appear. T5554 MS1 ...
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... General The basic functions of the T5554 are: supply IC from the coil, read data from the EEPROM to the reader, write data into the IC and program these data into the EEPROM. Several errors can be detected to protect the memory from being written with the wrong data (see page 16) ...
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... ST BT off off Loading block 0 off on Loading block 0 on off Loading block Loading block 0 T5554 8 Voltage at Coil1/Coil2 After Power-on V Coil 1 - Coil Power-on Loading block 0 (256 ms) reset Bit period Block terminator Data bit '1' Last bit Sequence terminator Data bit '1' ...
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... Loading block 0 4.6 Maxblock Feature not necessary to read all user data blocks, the MAXBLK field in block 0 can be used to limit the number of blocks read. For example, if MAXBLK = 5, the T5554 repeatedly reads and trans- mits only blocks (see transmitted) can be read. 4.7 Terminators The terminators are (optionally selectable) special damping patterns, which may be used to syn- chronize the reader. There are two types available ...
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... Table 4-1. T5554 - Modes of Operation PWD AOR STOP Behavior of Tag after Reset/POR Anticollision mode: Modulation starts after wake-up with a matching PWD • Programming needs valid PWD • AOR allows programing with read protection (no read after write) Password mode: • Modulation starts after reset ...
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... NO all tags read ? YES EXIT TAG POWER ON RESET read configuration wait for OPCODE + PWD (== wake up command) write damping NO PWD correct ? YES send block 1...MAXBLK until STOP command enter AOR mode internal reset sequence T5554 11 ...
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... Write mode Modulation during read mode Damping Write data Data Clock Field clock Read mode Figure 4-9. Write Data Decoding Schemes Write data decoder Figure 4-10. T5554 – OP-code Formats Standard write Password mode AOR (wake-up command) Direct access Stop command T5554 ...
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... Writing Data into the T5554 The T5554 expects a 2-bit OP-code first. There are two valid OP-codes (“10” and “11”). If the OP-code is invalid, the T5554 starts read mode beginning with block 1 after the last gap. The OP-code (“10”) is followed by different information (see • ...
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... If at any time Vpp is too low, the chip enters read mode immediately. The programming time is 16 ms. After programming is done, the T5554 enters read mode, starting with the block just pro- grammed. If either block or sequence terminators are enabled, the block is preceded by a block terminator ...
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... EEPROM. There are two error types which lead to different actions. 5.4 Errors During Writing There are four detectable errors which could occur during writing data into the T5554: • Wrong number of field clocks between two gaps • The OP-code is neither the standard OP-code (’10‘) nor the stop OP-code (’11‘) • ...
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... The lock bit of the addressed block is set • these cases, programming stops immediately. The IC reverts to read mode, starting with the currently addressed block. Figure 5-4. T5554 16 is too low Functional Diagram of the T5554 Power-on reset Loading block 0 READ Write mode 11 Stop OP-code ...
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... Figure 5-5. Example of Manchester Coding with Data Rate RF/16 4576D–RFID–12/06 T5554 17 ...
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... Figure 5-6. Example of Biphase Coding with Data Rate RF/16 T5554 18 4576D–RFID–12/06 ...
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... Figure 5-7. Example of FSK Coding with Data Rate RF/40, Subcarrier f 4576D–RFID–12/06 = RF/ RF T5554 19 ...
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... Figure 5-8. Example of PSK Coding with Data Rate RF/16 T5554 20 4576D–RFID–12/06 ...
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... Figure 5-9. Example of PSK2 Coding with Data Rate RF/16 4576D–RFID–12/06 T5554 21 ...
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... Figure 5-10. Example of PSK3 Coding with Data Rate RF/16 T5554 22 4576D–RFID–12/06 ...
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... To read amplifier 4576D–RFID–12/ 1. Coil 100 Coil 1 Coil 2 100 I AC 740 Energy Data 2 Coil Coil Mod ~ 2 V Input capacitance C res = 210 static dynamic Coil 1 (Pin 8) T5554 Coil 2 (Pin 1) T5554 23 ...
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... Supply voltage Coil voltage Resonance capacitor Damping resistor Notes: 1. Since EEPROM performance may be influenced by assembly and packaging, Atmel confirms the parameters for DOW (= die-on-wafer) and ICs assembled in standard package. 2. Typical value selected by mask option. T5554 24 Symbol I coil I coil p P tot ...
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... T555404-DBN T555401N-DDW 6” wafer 10. Chip Dimensions Figure 10-1. Chip Dimensions of T5554 4576D–RFID–12/06 Remarks 210 pF capacitor; default programming: all 0; EEPROM memory erased 80 pF capacitor; default programming: all 0; EEPROM memory erased 210 pF capacitor; default programming: all 0; EEPROM memory erased 80 pF capacitor ...
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... Revision History Please note that the following page numbers referred to in this section refer to the specific revision mentioned, not to this document. Revision No. 4576D-RFID-12/06 4576C-RFID-12/05 T5554 26 History Put data sheet in a new template Features on page 1 changed Section 3.2 “Resonance Capacitor” on page 3 changed Figure 4-1 “ ...
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Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Regional Headquarters Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel: (41) 26-426-5555 Fax: (41) 26-426-5500 Asia Room 1219 ...