MFRC522_ Просмотр технического описания (PDF) - NXP Semiconductors.
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MFRC522_ Datasheet PDF : 96 Pages
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NXP Semiconductors
MFRC522
Contactless reader IC
SPI up to 10 Mbit/s
I2C-bus interface up to 400 kBd in Fast mode, up to 3400 kBd in High-speed mode
RS232 Serial UART up to 1228.8 kBd, with voltage levels dependant on pin
voltage supply
FIFO buffer handles 64 byte send and receive
Flexible interrupt modes
Hard reset with low power function
Power-down by software mode
Programmable timer
Internal oscillator for connection to 27.12 MHz quartz crystal
2.5 V to 3.3 V power supply
CRC coprocessor
Programmable I/O pins
Internal self-test
4. Quick reference data
Table 1. Quick reference data
Symbol Parameter
Conditions
Min Typ Max Unit
VDDA
analog supply voltage
VDDD
digital supply voltage
VDD(TVDD) TVDD supply voltage
VDD(PVDD) PVDD supply voltage
VDD(SVDD) SVDD supply voltage
Ipd
power-down current
VDD(PVDD) ≤ VDDA = VDDD = VDD(TVDD);
VSSA = VSSD = VSS(PVSS) = VSS(TVSS) = 0 V
VSSA = VSSD = VSS(PVSS) = VSS(TVSS) = 0 V
VDDA = VDDD = VDD(TVDD) = VDD(PVDD) = 3 V
hard power-down; pin NRSTPD set LOW
[1][2] 2.5 3.3 3.6 V
2.5 3.3 3.6 V
2.5 3.3 3.6 V
[3] 1.6 1.8 3.6 V
1.6 -
3.6 V
[4] -
-
5
μA
soft power-down; RF level detector on
[4] -
-
10 μA
IDDD
digital supply current pin DVDD; VDDD = 3 V
IDDA
analog supply current pin AVDD; VDDA = 3 V, CommandReg register’s
RcvOff bit = 0
-
6.5 9
mA
-
7
10 mA
pin AVDD; receiver switched off; VDDA = 3 V,
CommandReg register’s RcvOff bit = 1
-
3
5
mA
IDD(PVDD)
IDD(TVDD)
Tamb
PVDD supply current
TVDD supply current
ambient temperature
pin PVDD
pin TVDD; continuous wave
HVQFN32
[5] -
-
[6][7][8] -
60
−25 -
40 mA
100 mA
+85 °C
[1] Supply voltages below 3 V reduce the performance in, for example, the achievable operating distance.
[2] VDDA, VDDD and VDD(TVDD) must always be the same voltage.
[3] VDD(PVDD) must always be the same or lower voltage than VDDD.
[4] Ipd is the total current for all supplies.
[5] IDD(PVDD) depends on the overall load at the digital pins.
[6] IDD(TVDD) depends on VDD(TVDD) and the external circuit connected to pins TX1 and TX2.
[7] During typical circuit operation, the overall current is below 100 mA.
[8] Typical value using a complementary driver configuration and an antenna matched to 40 Ω between pins TX1 and TX2 at 13.56 MHz.
MFRC522_34
Product data sheet
PUBLIC
All information provided in this document is subject to legal disclaimers.
Rev. 3.4 — 5 March 2010
112134
© NXP B.V. 2010. All rights reserved.
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