MFRC52202HN1,151 NXP Semiconductors, MFRC52202HN1,151 Datasheet - Page 57
MFRC52202HN1,151
Manufacturer Part Number
MFRC52202HN1,151
Description
IC READER 32-HVQFN
Manufacturer
NXP Semiconductors
Series
MIFARE®r
Datasheet
1.MFRC52201HN1157.pdf
(109 pages)
Specifications of MFRC52202HN1,151
Rf Type
Read / Write
Frequency
13.56MHz
Features
ISO14443-A / Mifare
Package / Case
32-VFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
935293912151
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MFRC52202HN1,151
Manufacturer:
NXP/恩智浦
Quantity:
20 000
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NXP Semiconductors
112132
Product data sheet
Fig 17. Register Read and Write Access
SA
SA
10.4.8 Register Read Access
SA
SO
ACK
Nack
(W)
(R)
Optional, if the previous access was on the same register address
SA
I2C slave address
To read out data from a specific register address of the MFRC522 the host controller shall
use the procedure:
First a write access to the specific register address has to be performed as indicated in the
following frame.
The first byte of a frame indicates the device address according to the I
second byte indicates the register address. No data bytes are added.
The read/write bit shall be 0.
Having performed this write access, the read access can start. The host has to send the
device address of the MFRC522. As an answer to this the MFRC522 responds with the
content of this register. In one frame all n-data bytes could be read from the same register
address. This enables for example a fast FIFO access or register polling.
The read/write bit shall be set to logic 1.
I2C slave address
A7-A0
A7-A0
sent by master
sent by slave
start condition
stop condition
acknowledge
not acknowlege
write cycle
read cycle
I2C slave address
A7-A0
(W)
0
(W)
0
Ack
Ack
Rev. 3.2 — 22 May 2007
(R)
1
Write Cycle
0
Ack
0
Read Cycle
0
0
[0..n]
address A5-A0
Joiner register
DATA
[7..0]
address A5-A0
Joiner register
DATA
[7..0]
0..n
Nack
Ack
Ack
Ack
[0..n]
SO
Contactless Reader IC
SO
DATA
[7..0]
SO
MFRC522
© NXP B.V. 2007. All rights reserved.
2
C rules. The
Ack
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