MFRC50001T/0FE,112 NXP Semiconductors, MFRC50001T/0FE,112 Datasheet - Page 22

• Manufacturer Part Number: MFRC50001T/0FE,112
• Description: IC MIFARE READER 32-SOIC
• Manufacturer: NXP Semiconductors
• Series: MIFARE®r

Specifications of MFRC50001T/0FE,112

• Rf Type: Read Only
• Frequency: 13.56MHz
• Features: ISO14443-A, ISO14443-B, ISO15693
• Package / Case: 32-SOIC (0.300", 7.50mm Width)
• Product: RFID Readers
• Operating Temperature Range: - 25 C to + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 568-2222-5; 935268039112; MFRC500; MFRC51T0FED

NXP Semiconductors
MFRC500_33
Product data sheet
PUBLIC
9.5.2.1 Time-out and WatchDog counters
9.5.2.2 Stopwatch
9.5.2.3 Programmable one shot timer and periodic trigger
9.5.2 Using the timer unit functions
After starting the timer using TReloadValue[7:0], the timer unit decrements the TimerValue
register beginning with a given start event. If a given stop event occurs, such as a bit
being received from the card, the timer unit stops without generating an interrupt.
If a stop event does not occur, such as the card not answering within the expected time,
the timer unit decrements down to zero and generates a timer interrupt request. This
signals to the microprocessor the expected event has not occurred within the given time
(t
The time (t
the timer unit. Setting the TReloadValue register triggers the timer which in turn, starts to
decrement. If the defined stop event occurs, the timer stops. The time between start and
stop is calculated by the microprocessor using
decrement down to zero.
Programmable one shot timer: The microprocessor starts the timer unit and waits for
the timer interrupt. The interrupt occurs after the time specified by t
Periodic trigger: If the microprocessor sets the TAutoRestart bit, it generates an interrupt
request after every t
Δt
Timer
=
).
(
TReLoad
Timer
) between a start and stop event is measured by the microprocessor using
All information provided in this document is subject to legal disclaimers.
value
Timer
–
TimerValue
Rev. 3.3 — 15 March 2010
cycle.
048033
)
×
t
Timer
Highly Integrated ISO/IEC 14443 A Reader IC
Equation 5
when the time does not
Timer
MFRC500
© NXP B.V. 2010. All rights reserved.
.
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