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MFRC522 Datasheet(PDF) 87 Page - NXP Semiconductors

Part No. MFRC522
Description  Contactless Reader IC
Download  109 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

MFRC522 Datasheet(HTML) 87 Page - NXP Semiconductors

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© NXP B.V. 2007. All rights reserved.
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]
--
5
μA
ISPD
Soft Power-down
Current
AVDD =DVDD =
TVDD =PVDD = 3 V
[4]
--
10
μA
IDVDD
Digital Supply
Current
DVDD =3V
-
6.5
9
mA
IAVDD
Analog Supply
Current
AVDD =3V,
bit RCVOff =0
-7
10
mA
IAVDD,RCVOFF Analog Supply
Current, receiver
switched off
AVDD =3V,
bit RCVOff =1
-
35mA
IPVDD
Pad Supply
Current
[2]
--
40
mA
ITVDD
Transmitter Supply
Current
Continuous Wave
[1][3]
-60[5]
100
mA
ISVDD
MFIN/MFOUT Pad
Supply Current
[6]
--
4
mA


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