mfrc522 NXP Semiconductors, mfrc522 Datasheet - Page 50

• Manufacturer Part Number: mfrc522
• Description: Contactless Reader Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
112132
Product data sheet
Fig 9. Schematic Diagram to Read Data
10.3.3 Framing
Table 141: UART Framing
Remark: For data and address bytes the LSB bit has to be sent first.
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 142: Byte Order to Read Data
RX
TX
Start bit
Data bits
Stop bit
No parity bit is used during transmission.
byte 0
adr
Rev. 3.2 — 22 May 2007
Length
8 bits
1 bit
1 bit
byte 1
data 0
Contactless Reader IC
MFRC522
© NXP B.V. 2007. All rights reserved.
Value
Data
0
1
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