mfrc531 NXP Semiconductors, mfrc531 Datasheet - Page 90

• Manufacturer Part Number: mfrc531
• Description: Iso/iec 14443 Reader Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
12. Limiting values
Table 149. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
13. Characteristics
Table 150. Operating condition range
MFRC531_34
Product data sheet
PUBLIC
Symbol
T
T
V
V
V
|V
Symbol
T
V
V
V
V
amb
stg
amb
DDD
DDA
DD(TVDD)
DDD
DDA
DD(TVDD)
ESD
i
|
11.6.4.1 Authent2 command effects
Parameter
ambient temperature
storage temperature
digital supply voltage
analog supply voltage
TVDD supply voltage
input voltage (absolute value)
13.1 Operating condition range
Parameter
ambient temperature
digital supply voltage
analog supply voltage
TVDD supply voltage
electrostatic discharge voltage Human Body Model (HBM); 1.5 kΩ,
If the Authent2 command is successful, the authenticity of card and the MFRC531 are
proved. This automatically sets the Crypto1On control bit. When bit Crypto1On = logic 1,
all further card communication is encrypted using the Crypto1 security algorithm. If the
Authent2 command fails, bit Crypto1On is cleared (Crypto1On = logic 0).
Remark: The Crypto1On flag can only be set by a successfully executed Authent2
command and not by the microprocessor. The microprocessor can clear bit Crypto1On to
continue with unencrypted (plain) card communication.
Remark: The Authent2 command must be executed immediately after a successful
Authent1 command; see
stored in the key buffer and those on the card must match.
Conditions
on any digital pin to DVSS
on pin RX to AVSS
Conditions
-
DVSS = AVSS = TVSS = 0 V
100 pF
Machine Model (MM); 0.75 μH,
200 pF
DVSS = AVSS = TVSS = 0 V
DVSS = AVSS = TVSS = 0 V
Rev. 3.4 — 26 January 2010
Section 11.6.3 “Authent1 command
056634
Min
−40
−40
−0.5
−0.5
−0.5
−0.5
−0.5
Min
−25
3.0
4.5
4.5
3.0
-
-
0Ch”. In addition, the keys
Max
+150
+150
+6
+6
+6
V
V
ISO/IEC 14443 reader IC
DDD
DDA
Typ
+25
3.3
5.0
5.0
5.0
-
-
+ 0.5
+ 0.5
MFRC531
© NXP B.V. 2010. All rights reserved.
Max
+85
3.6
5.5
5.5
5.5
1000
100
Unit
°C
°C
V
V
V
V
V
90 of 116
Unit
°C
V
V
V
V
V
V