mfrc531 NXP Semiconductors, mfrc531 Datasheet - Page 5

• Manufacturer Part Number: mfrc531
• Description: Iso/iec 14443 Reader Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
8. Pinning information
Table 3.
MFRC531_34
Product data sheet
PUBLIC
Pin
1
2
3
4
5
6
7
8
9
10
11
12
[2]
[3]
[3]
Pin description
Symbol
OSCIN
IRQ
MFIN
MFOUT
TX1
TVDD
TX2
TVSS
NCS
NWR
R/NW
nWrite
NRD
NDS
nDStrb
DVSS
8.1 Pin description
Fig 2.
Type
I
O
I
O
O
P
O
G
I
I
I
I
I
I
I
G
[1]
MFRC531 pin configuration
Description
oscillator/clock inputs:
interrupt request generates an output signaling an interrupt event
ISO/IEC 14443 A MIFARE serial data interface input
ISO/IEC 14443 A MIFARE serial data interface output
transmitter 1 modulated carrier output; 13.56 MHz
transmitter power supply for the TX1 and TX2 output stages
transmitter 2 modulated carrier output; 13.56 MHz
transmitter ground for the TX1 and TX2 output stages
applied to pins D0 to D7
read not write input: switches between read or write cycles
not write input: selects the read or write cycle to be performed
not read input: generates the strobe signal for reading data from the registers
when applied to pins D0 to D7
not data strobe input: generates the strobe signal for the read and write cycles
digital ground
not chip select input: selects and activates the microprocessor interface
not write input: generates the strobe signal for writing data to the registers when
not data strobe input: generates the strobe signal for the read and write cycles
crystal oscillator input to the oscillator’s inverting amplifier
externally generated clock input; f
NWR/R/NW/nWrite
NRD/NDS/nDStrb
Rev. 3.4 — 26 January 2010
MFOUT
AD0/D0
AD1/D1
AD2/D2
AD3/D3
OSCIN
TVDD
DVSS
TVSS
MFIN
NCS
IRQ
TX1
TX2
056634
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
MFRC531
001aal219
osc
= 13.56 MHz
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
OSCOUT
RSTPD
VMID
RX
AVSS
AUX
AVDD
DVDD
A2/SCK
A1
A0/nWait/MOSI
ALE/AS/nAStrb/NSS
D7/AD7
D6/AD6
D5/AD5
D4/AD4
ISO/IEC 14443 reader IC
MFRC531
© NXP B.V. 2010. All rights reserved.
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