參數(shù)資料
型號(hào)： MFRC52201HN1
廠商： NXP Semiconductors N.V.
元件分類： 通信及網(wǎng)絡(luò)
英文描述： Contactless reader IC
封裝： MFRC52201HN1<SOT617-1 (HVQFN32)|<<http://www.nxp.com/packages/SOT617-1.html<1<Always Pb-free,;MFRC52201HN1<SOT617-1 (HVQFN32)|<<http://www.nxp.com/packages/SOT617-1.html&
文件頁數(shù)： 10/92頁
文件大?。?/td> 691K
代理商： MFRC52201HN1
MFRC522_35
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.5 — 21 June 2010
112135
10 of 92
NXP Semiconductors
MFRC522
Contactless reader IC
8.1.2.2
SPI write data
To write data to the MFRC522 using SPI requires the byte order shown in
Table 7
. It is
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.
Line
MOSI
MISO
[1]
X = Do not care.
Remark:
The MSB must be sent first.
8.1.2.3
SPI address byte
The address byte must meet the following format.
The MSB of the first byte defines the mode used. To read data from the MFRC522 the
MSB is set to logic 1. To write data to the MFRC522 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.
7 (MSB)
1 = read
0 = write
8.1.3
UART interface
8.1.3.1
Connection to a host
Remark:
Signals DTRQ and MX can be disabled by clearing TestPinEnReg register’s
RS232LineEn bit.
MOSI and MISO byte order
Byte 0
address 0
X
[1]
Byte 1
data 0
X
[1]
Byte 2
data 1
X
[1]
To
...
...
Byte n
data n
1
X
[1]
Byte n + 1
data n
X
[1]
Address byte 0 register; address MOSI
6
5
address
4
3
2
1
0 (LSB)
0
Fig 8.
UART connection to microcontrollers
001aak587
MFRC522
RX
RX
TX
TX
DTRQ
DTRQ
MX
MX
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