MFRC52201HN1 NXP Semiconductors, MFRC52201HN1 Datasheet - Page 67

• Manufacturer Part Number: MFRC52201HN1
• Description: RFID Modules & Development Tools CL READER IC'S
• Manufacturer: NXP Semiconductors

Specifications of MFRC52201HN1

• Data Rate: 3.4 Mbps
• Operating Temperature Range: + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MFRC52201HN1,157

NXP Semiconductors
10. MFRC522 command set
MFRC522_33
Product data sheet
PUBLIC
10.1 General description
10.2 General behavior
10.3 MFRC522 command overview
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
CommandReg register.
Arguments and/or data necessary to process a command are exchanged via the FIFO
buffer.
Table 149. Command overview
Command
Idle
Mem
Generate RandomID
CalcCRC
Transmit
NoCmdChange
Receive
Transceive
-
MFAuthent
SoftReset
•
•
•
•
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.
Command
code
0000
0001
0010
0011
0100
0111
1000
1100
1101
1110
1111
Rev. 3 — 26 October 2009
112133
Action
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
Contactless reader IC
MFRC522
Table
© NXP B.V. 2009. All rights reserved.
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