MFRC52201HN1/TRAYB NXP [NXP Semiconductors], MFRC52201HN1/TRAYB Datasheet - Page 12

• Manufacturer Part Number: MFRC52201HN1/TRAYB
• Description: Contactless reader IC
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
MFRC522_33
Product data sheet
PUBLIC
Fig 9.
DTRQ
(1) Reserved.
MX
RX
TX
UART read data timing diagram
8.1.3.3 UART framing
SA
A0
Table 11.
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
used. The first byte sent defines both the mode and the address.
Table 12.
Write data: To write data to the MFRC522 using the UART interface, the structure shown
in
The first byte sent defines both the mode and the address.
Bit
Start
Data
Stop
Pin
RX (pin 24)
TX (pin 31)
Table 13
A1
A2
UART framing
Read data byte order
must be used.
ADDRESS
A3
A4
Byte 0
address
-
Rev. 3 — 26 October 2009
A5
(1)
Length
1-bit
8 bits
1-bit
112133
R/W
SA
SO
D0
D1
D2
D3
DATA
Byte 1
-
data 0
D4
Value
0
data
1
D5
Contactless reader IC
D6
MFRC522
Table 12
© NXP B.V. 2009. All rights reserved.
D7
SO
001aak588
must be
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