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MFRC522 数据表(PDF) 21 Page - NXP Semiconductors

部件名 MFRC522
功能描述  Contactless reader IC
PDF  96 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

MFRC522 数据表(HTML) 21 Page - NXP Semiconductors

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MFRC522_33
© NXP B.V. 2009. All rights reserved.
Product data sheet
PUBLIC
Rev. 3 — 26 October 2009
112133
21 of 96
NXP Semiconductors
MFRC522
Contactless reader IC
Fig 19. I2C-bus HS mode protocol frame
msc618
8-bit master code 0000 1xxx
A
tH
t1
S
F/S mode
HS mode
If P then
F/S mode
If Sr (dotted lines)
then HS mode
16
7
8
9
6
7
8
9
1
1
2 to 5
2 to 5
2 to 5
67
89
SDA high
SCL high
SDA high
SCL high
tH
tFS
Sr
Sr P
n + (8-bit data
+
A/A)
7-bit SLA
R/W
A
= Master current source pull-up
= Resistor pull-up



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