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MFRC523 Datasheet(PDF) 7 Page - NXP Semiconductors

Part No. MFRC523
Description  Contactless reader IC
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Maker  NXP [NXP Semiconductors]
Homepage  http://www.nxp.com
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MFRC523 Datasheet(HTML) 7 Page - NXP Semiconductors

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MFRC523_33
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.3 — 5 March 2010
115233
7 of 98
NXP Semiconductors
MFRC523
Contactless reader IC
[1]
Pin types: I = Input, O = Output, I/O = Input/Output, P = Power and G = Ground.
[2]
The pin functionality of these pins is explained in Section 8.3 “Digital interfaces”.
[3]
Connection of heatsink pad on package underside is not necessary. Optional connection to pin DVSS is possible.
16
VMID
P
internal reference voltage
17
RX
I
RF signal input
18
AVSS
G
analog ground
19
AUX1
O
auxiliary outputs for test purposes
20
AUX2
O
auxiliary outputs for test purposes
21
OSCIN
I
crystal oscillator inverting amplifier input; also the input for an externally generated clock
(fclk = 27.12 MHz)
22
OSCOUT
O
crystal oscillator inverting amplifier output
23
IRQ
O
interrupt request output: indicates an interrupt event
24
SDA
I/O
I2C-bus serial data line input/output[2]
NSS
I
SPI signal input[2]
RX
I
UART address input[2]
25
D1
I/O
test port[2]
ADR_5
I/O
I2C-bus address 5 input[2]
26
D2
I/O
test port
ADR_4
I
I2C-bus address 4 input[2]
27
D3
I/O
test port
ADR_3
I
I2C-bus address 3 input[2]
28
D4
I/O
test port
ADR_2
I
I2C-bus address 2 input[2]
29
D5
I/O
test port
ADR_1
I
I2C-bus address 1 input[2]
SCK
I
SPI serial clock input[2]
DTRQ
O
UART request to send output to microcontroller[2]
30
D6
I/O
test port
ADR_0
I
I2C-bus address 0 input[2]
MOSI
I/O
SPI master out, slave in[2]
MX
O
UART output to microcontroller[2]
31
D7
I/O
test port
SCL
I/O
I2C-bus clock input/output[2]
MISO
I/O
SPI master in, slave out[2]
TX
O
UART data output to microcontroller[2]
32
EA
I
external address input for coding I2C-bus address[2]
Table 3.
Pin description …continued
Pin
Symbol
Type[1] Description


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