MFRC52302HN1,151 NXP Semiconductors, MFRC52302HN1,151 Datasheet - Page 21
MFRC52302HN1,151
Manufacturer Part Number
MFRC52302HN1,151
Description
IC READER 32-HVQFN
Manufacturer
NXP Semiconductors
Series
MIFARE®r
Datasheet
1.MFRC52302HN1151.pdf
(98 pages)
Specifications of MFRC52302HN1,151
Rf Type
Read / Write
Frequency
13.56MHz
Features
ISO14443-A, ISO14443-B
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
935293911151
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NXP Semiconductors
MFRC523
Product data sheet
COMPANY PUBLIC
8.3.4.10 Serial data transfer format in HS mode
8.3.4.8 High-speed mode
8.3.4.9 High-speed transfer
In High-speed mode (HS mode), the device can transfer information at data rates of up to
3.4 Mbit/s, while remaining fully downward-compatible with Fast or Standard modes
(F/S modes) for bidirectional communication in a mixed-speed bus system.
To achieve data rates of up to 3.4 Mbit/s the following improvements have been made to
I
The HS mode serial data transfer format meets the Standard mode I
HS mode can only start after all of the following conditions (all of which are in F/S mode):
When HS mode starts, the active master sends a repeated START condition (Sr) followed
by a 7-bit slave address with a R/W bit address and receives an acknowledge bit (A) from
the selected MFRC523.
Data transfer continues in HS mode after the next repeated START (Sr), only switching
back to F/S mode after a STOP condition (P). To reduce the overhead of the master code,
a master links a number of HS mode transfers, separated by repeated START conditions
(Sr).
2
1. START condition (S)
2. 8-bit master code (00001 XXXb)
3. Not-acknowledge bit (A)
Fig 18. I
C-bus operation.
•
•
S
The inputs of the device in HS mode incorporate spike suppression, a Schmitt trigger
on the SDA and SCL inputs and different timing constants when compared to
F/S mode
The output buffers of the device in HS mode incorporate slope control of the falling
edges of the SDA and SCL signals with different fall times compared to F/S mode
MASTER CODE
F/S mode
2
C-bus HS mode protocol switch
All information provided in this document is subject to legal disclaimers.
Rev. 3.7 — 8 November 2011
A
Sr SLAVE ADDRESS
115237
HS mode (current-source for SCL HIGH enabled)
R/W
A
(n-bytes + A)
DATA
A/A
Contactless reader IC
2
MFRC523
C-bus specification.
Sr
P
HS mode continues
© NXP B.V. 2011. All rights reserved.
SLAVE ADDRESS
F/S mode
001aak749
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