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HT2DC20S20 Datasheet(PDF) 7 Page - NXP Semiconductors |
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HT2DC20S20 Datasheet(HTML) 7 Page - NXP Semiconductors |
7 / 16 page 2001 Oct 01 7 Philips Semiconductors Product specification HITAG 2 stick transponder HT2DC20S20 Table 2 Format of page 3 Table 3 Bits of the configuration byte Notes 1. The coding in HITAG 2 operation is depending on bit 0. 2. The setting of this bit is One Time Programmable (OTP). Do not set bit 6 of the configuration byte to logic 1 before having written the final data into page 3 (including the configuration byte and password TAG) of the transponder. 3. The setting of this bit is One Time Programmable (OTP). Do not set bit 7 of the configuration byte to logic 1 before having written the final data into pages 1 and 2 of the transponder. Table 4 Standard values of the configuration byte PAGE 3 bit 31 bit 24 bit 23 bit 0 configuration byte (8 bits) password TAG (24 bits) 76543210 BIT VALUE DESCRIPTION REMARK 0 0 Manchester code does effect HITAG 2 operation only 1 biphase code does effect HITAG 2 operation only 2, 1 00 public mode B coding biphase; note 1 01 public mode A coding Manchester; note 1 10 public mode C coding biphase; note 1 11 HITAG 2 coding depending on bit 0; note 1 3 0 password mode 1 crypto mode 4 0 pages 6 and 7 read/write 1 pages 6 and 7 read-only 5 0 pages 4 and 5 read/write 1 pages 4 and 5 read/write 6 0 page 3 read/write 1 page 3 read-only configuration byte and password TAG fixed; note 2 7 0 pages 1 and 2 read/write 1 pages 1 no read and write note 3 page 2 read-only when transponder is in password mode page 3 no read and write when transponder is in crypto mode MODE SELECTION VALUE Password mode 0x06 Crypto mode 0x0E Public mode A 0x02 Public mode B 0x00 Public mode C 0x04 |
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