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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MFRC522 датащи(PDF) 12 Page - NXP Semiconductors |
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MFRC522 датащи(HTML) 12 Page - NXP Semiconductors |
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12 / 96 page  MFRC522_33 © NXP B.V. 2009. All rights reserved. Product data sheet PUBLIC Rev. 3 — 26 October 2009 112133 12 of 96 NXP Semiconductors MFRC522 Contactless reader IC 8.1.3.3 UART framing Remark: The LSB for data and address bytes must be sent first. No parity bit is used during transmission. Read data: To read data using the UART interface, the flow shown in Table 12 must be used. The first byte sent defines both the mode and the address. Write data: To write data to the MFRC522 using the UART interface, the structure shown in Table 13 must be used. The first byte sent defines both the mode and the address. Table 11. UART framing Bit Length Value Start 1-bit 0 Data 8 bits data Stop 1-bit 1 Table 12. Read data byte order Pin Byte 0 Byte 1 RX (pin 24) address - TX (pin 31) - data 0 (1) Reserved. Fig 9. UART read data timing diagram 001aak588 SA ADDRESS RX TX MX DTRQ A0 A1 A2 A3 A4 A5 (1) SO SA D0 D1 D2 D3 D4 D5 D6 D7 SO DATA R/W |
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