
CLRC632_35
NXP B.V. 2009. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.5 — 10 November 2009
073935
5 of 126
NXP Semiconductors
CLRC632
Multiple protocol contactless reader IC (MIFARE/I-CODE1)
8.
Pinning information
8.1 Pin description
Fig 2.
CLRC632 pin conguration
CLRC632
OSCIN
OSCOUT
IRQ
RSTPD
MFIN
VMID
MFOUT
RX
TX1
AVSS
TVDD
AUX
TX2
AVDD
TVSS
DVDD
NCS
A2/SCK
NWR/R/NW/nWrite
A1
NRD/NDS/nDStrb
A0/nWait/MOSI
DVSS
ALE/AS/nAStrb/NSS
AD0/D0
D7/AD7
AD1/D1
D6/AD6
AD2/D2
D5/AD5
AD3/D3
D4/AD4
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1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
18
17
20
19
22
21
24
23
26
25
32
31
30
29
28
27
Table 3.
Pin description
Pin
Symbol
Description
1
OSCIN
I
oscillator/clock inputs:
crystal oscillator input to the oscillator’s inverting amplier
externally generated clock input; fosc = 13.56 MHz
2
IRQ
O
interrupt request generates an output signaling an interrupt event
3
MFIN
I
ISO/IEC 14443 A MIFARE serial data interface input
MFOUT
O
interface outputs used as follows:
MIFARE: generates serial data ISO/IEC 14443 A
I-CODE: generates serial data based on I-CODE1 and ISO/IEC 15693
5
TX1
O
transmitter 1 modulated carrier output; 13.56 MHz
6
TVDD
P
transmitter power supply for the TX1 and TX2 output stages
7
TX2
O
transmitter 2 modulated carrier output; 13.56 MHz
8
TVSS
G
transmitter ground for the TX1 and TX2 output stages
9
NCS
I
not chip select input is used to select and activate the CLRC632’s microprocessor
interface
NWR
I
not write input generates the strobe signal for writing data to the CLRC632
registers when applied to pins D0 to D7
R/NW
I
read not write input is used to switch between read or write cycles
nWrite
I
not write input selects the read or write cycle to be performed