MFRC522 datasheet(3/109 Pages) NXP

3 / 109 page

112132

Product data sheet

Rev. 3.2 — 22 May 2007

3 of 109

NXP Semiconductors

MFRC522

Contactless Reader IC

Quick reference data

[1]

Supply voltage below 3 V reduces the performance (e.g. the achievable operating distance).

[2]

AVDD, DVDD and TVDD shall always be on the same voltage level.

[3]

PVDD shall always be on the same or lower voltage level than DVDD.

[4]

ITVDD depends on TVDD and the external circuitry connected to Tx1 and Tx2

[5]

IPVDD depends on the overall load at the digital pins.

[6]

During operation with a typical circuitry the overall current is below 100 mA.

[7]

ISPD and IHPD are the total currents over all supplies.

[8]

Typical value using a complementary driver configuration and an antenna matched to 40

Ω between TX1 and TX2 at 13.56 MHz

Table 1.

Quick reference data

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

AVDD

Supply Voltage

AVSS =DVSS =PVSS=TVSS =0 V,

PVDD ≤ AVDD =DVDD =TVDD

[1][2]

2.5

3.6

DVDD

[1][2]

TVDD

[1][2]

PVDD

Pad power supply

AVSS =DVSS =PVSS=TVSS =0 V,

PVDD ≤ AVDD =DVDD =TVDD

[3]

1.6

3.6

SVDD

MFIN/MFOUT Pad Power

Supply

AVSS =DVSS =PVSS=TVSS =0 V,

1.6

3.6

IHPD

Hard Power-down Current

AVDD =DVDD = TVDD =PVDD =3 V,

NRESET =LOW

[4]

--5

μA

ISPD

Soft Power-down Current

AVDD =DVDD = TVDD =PVDD = 3 V,

RF level detector on

[4]

--10

μA

IDVDD

Digital Supply Current

DVDD =3V

6.5

IAVDD

Analog Supply Current

AVDD = 3 V, bit RCVOff = 0

IAVDD,RCVOFF

Analog Supply Current,

receiver switched off

AVDD = 3 V, bit RCVOff = 1

IPVDD

Pad Supply Current

[2]

--40

ITVDD

Transmitter Supply Current

Continuous Wave

[1][3][8]

-60

100

Tamb

operating ambient temperature

-25

+85

°C

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