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MFRC522 Datasheet(PDF) 50 Page - NXP Semiconductors

Part # MFRC522
Description  Contactless Reader IC
PDF  109 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

MFRC522 Datasheet(HTML) 50 Page - NXP Semiconductors

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© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 3.2 — 22 May 2007
50 of 109
NXP Semiconductors
MFRC522
Contactless Reader IC
10.3.3 Framing
Remark: For data and address bytes the LSB bit has to be sent first.
No parity bit is used during transmission.
Read data:
To read out data using the UART interface the flow described below has to be used. The
first send byte defines both the mode itself and the address.
Table 141: UART Framing
Length
Value
Start bit
1 bit
0
Data bits
8 bits
Data
Stop bit
1 bit
1
Table 142: Byte Order to Read Data
byte 0
byte 1
RX
adr
TX
data 0
Fig 9.
Schematic Diagram to Read Data



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