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(yè)數(shù)： 67/92頁(yè)
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
67 of 92
NXP Semiconductors
MFRC522
Contactless reader IC
10. MFRC522 command set
10.1 General description
The MFRC522 operation is determined by a state machine capable of performing a set of
commands. A command is executed by writing a command code (see
Table 149
) to the
CommandReg register.
Arguments and/or data necessary to process a command are exchanged via the FIFO
buffer.
10.2 General behavior
Each command that needs a data bit stream (or data byte stream) as an input
immediately processes any data in the FIFO buffer. An exception to this rule is the
Transceive command. Using this command, transmission is started with the
BitFramingReg register’s StartSend bit.
Each command that needs a certain number of arguments, starts processing only
when it has received the correct number of arguments from the FIFO buffer.
The FIFO buffer is not automatically cleared when commands start. This makes it
possible to write command arguments and/or the data bytes to the FIFO buffer and
then start the command.
Each command can be interrupted by the host writing a new command code to the
CommandReg register, for example, the Idle command.
10.3 MFRC522 command overview
Table 149. Command overview
Command
Command
code
0000
0001
0010
0011
0100
0111
Action
Idle
Mem
Generate RandomID
CalcCRC
Transmit
NoCmdChange
no action, cancels current command execution
stores 25 bytes into the internal buffer
generates a 10-byte random ID number
activates the CRC coprocessor or performs a self test
transmits data from the FIFO buffer
no command change, can be used to modify the
CommandReg register bits without affecting the command,
for example, the PowerDown bit
activates the receiver circuits
transmits data from FIFO buffer to antenna and automatically
activates the receiver after transmission
reserved for future use
performs the MIFARE standard authentication as a reader
resets the MFRC522
Receive
Transceive
1000
1100
-
MFAuthent
SoftReset
1101
1110
1111
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MFRC52201HN1,115 功能描述:RFID應(yīng)答器 RoHS:否 制造商:Murata 存儲(chǔ)容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel
MFRC52201HN1,118 功能描述:RFID應(yīng)答器 RoHS:否 制造商:Murata 存儲(chǔ)容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel
MFRC52201HN1,151 功能描述:RFID應(yīng)答器 Contactless Reader 32-Pin RoHS:否 制造商:Murata 存儲(chǔ)容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel
MFRC52201HN1,157 功能描述:RFID應(yīng)答器 CL READER IC’S RoHS:否 制造商:Murata 存儲(chǔ)容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel
MFRC52201HN1/TRAYB 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Contactless reader IC
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