MFRC52301HN1,157 NXP Semiconductors, MFRC52301HN1,157 Datasheet - Page 68

• Manufacturer Part Number: MFRC52301HN1,157
• Description: IC READER 13.56MHZ 32-HVQFN
• Manufacturer: NXP Semiconductors

Specifications of MFRC52301HN1,157

• Frequency: 13.56MHz
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Rf Type: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935282956157

NXP Semiconductors
MFRC523_34
Product data sheet
PUBLIC
10.3.1.1 Idle mode
10.3.1.2 Mem command
10.3.1.3 Generate RandomID
10.3.1.4 CalcCRC command
10.3.1.5 Transmit command
10.3.1 MFRC523 command descriptions
Table 148. Command overview
Places the MFRC523 in Idle mode. The Idle command also terminates itself.
Transfers 25 bytes from the FIFO buffer to the internal buffer. To read out the 25 bytes
from the internal buffer the Mem command must be started with an empty FIFO buffer. In
this case, the 25 bytes are transferred from the internal buffer to the FIFO.
During a hard power-down (using pin NRSTPD), the 25 bytes in the internal buffer remain
unchanged and are only lost if the power supply is removed from the MFRC523.
This command automatically terminates when finished and the Idle command becomes
active.
This command generates a 10-byte random number which is initially stored in the internal
buffer. This then overwrites the 10 bytes in the internal 25-byte buffer. This command
automatically terminates when finished and the MFRC523 returns to Idle mode.
The FIFO buffer content is transferred to the CRC coprocessor and the CRC calculation is
started. The calculation result is stored in the CRCResultReg register. The CRC
calculation is not limited to a dedicated number of bytes. The calculation is not stopped
when the FIFO buffer is empty during the data stream. The next byte written to the FIFO
buffer is added to the calculation.
The CRC preset value is controlled by the ModeReg register’s CRCPreset[1:0] bits. The
value is loaded in to the CRC coprocessor when the command starts. This command
must be terminated by writing a command to the CommandReg register, such as, the Idle
command.
If the AutoTestReg register’s SelfTest[3:0] bits are set correctly, the MFRC523 enters
Self-test mode. Starting the CalcCRC command initiates a digital self-test. The result of
the self-test is written to the FIFO buffer.
The FIFO buffer content is immediately transmitted after starting this command. Before
transmitting the FIFO buffer content, all relevant registers must be set for data
transmission.
This command automatically terminates when the FIFO buffer is empty. It can be
terminated by another command written to the CommandReg register.
Command
-
MFAuthent
SoftReset
All information provided in this document is subject to legal disclaimers.
Rev. 3.5 — 24 September 2010
Command
code
1101
1110
1111
115235
…continued
Action
reserved for future use
performs the MIFARE standard authentication as a reader
resets the MFRC523
Contactless reader IC
MFRC523
© NXP B.V. 2010. All rights reserved.
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