mfrc52301hn1-trayb NXP Semiconductors, mfrc52301hn1-trayb Datasheet - Page 11

• Manufacturer Part Number: mfrc52301hn1-trayb
• Description: Contactless Reader Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
MFRC523_33
Product data sheet
PUBLIC
8.3.2.2 SPI write data
8.3.2.3 SPI address byte
8.3.3.1 Connection to a host
8.3.3 UART interface
Table 6.
[1]
Remark: The MSB must be sent first.
To write data to the MFRC523 using SPI requires the byte order shown in
possible to write up to n data bytes by only sending one address byte.
The first send byte defines both the mode and the address byte.
Table 7.
[1]
Remark: The MSB must be sent first.
The address byte must meet the following format.
The MSB of the first byte defines the mode used. To read data from the MFRC523 the
MSB is set to logic 1. To write data to the MFRC523 the MSB must be set to logic 0. Bits 6
to 1 define the address and the LSB is set to logic 0.
Table 8.
Line
MOSI
MISO
Line
MOSI
MISO
7 (MSB)
1 = read
0 = write
Fig 8.
X = Do not care.
X = Do not care.
UART connection to microcontrollers
MOSI and MISO byte order
MOSI and MISO byte order
Address byte 0 register; address MOSI
6
address
Byte 0
address 0
X
Byte 0
address 0
X
[1]
[1]
All information provided in this document is subject to legal disclaimers.
5
Rev. 3.3 — 5 March 2010
Byte 1
address 1
data 0
Byte 1
data 0
X
[1]
115233
RX
TX
DTRQ
MX
4
Byte 2
address 2
data 1
Byte 2
data 1
X
[1]
3
RX
TX
DTRQ
MX
MFRC523
To
...
...
To
...
...
001aal158
2
Byte n
address n
data n − 1
Byte n
data n − 1
X
[1]
Contactless reader IC
1
MFRC523
© NXP B.V. 2010. All rights reserved.
Table
Byte n + 1
00
data n
Byte n + 1
data n
X
[1]
0 (LSB)
0
7. It is
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