MFRC522 datasheet(87/109 Pages) NXP

87 / 109 page

112132

Product data sheet

Rev. 3.2 — 22 May 2007

87 of 109

NXP Semiconductors

MFRC522

Contactless Reader IC

23.2 Current Consumption

[1]

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

[2]

IPVDD depends on the overall load at the digital pins.

[3]

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

[4]

ISPD and IHPD are the total currents over all supplies.

[5]

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

Ω between TX1

and TX2 at 13.56 MHz

[6]

ISVDD depends on the load at the MFOUT pin.

Table 168: Current Consumption

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

IHPD

Hard Power-down

Current

AVDD =DVDD =

TVDD =PVDD =3V,

NRESET =LOW

[4]

μA

ISPD

Soft Power-down

Current

AVDD =DVDD =

TVDD =PVDD = 3 V

[4]

μA

IDVDD

Digital Supply

Current

DVDD =3V

6.5

IAVDD

Analog Supply

Current

AVDD =3V,

bit RCVOff =0

-7

IAVDD,RCVOFF Analog Supply

Current, receiver

switched off

AVDD =3V,

bit RCVOff =1

35mA

IPVDD

Pad Supply

Current

[2]

ITVDD

Transmitter Supply

Current

Continuous Wave

[1][3]

-60[5]

100

ISVDD

MFIN/MFOUT Pad

Supply Current

[6]

MFRC522 Datasheet(PDF) 87 Page - NXP Semiconductors

MFRC522 Datasheet(HTML) 87 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL