MC33690DWER2 Freescale Semiconductor, MC33690DWER2 Datasheet - Page 5

• Manufacturer Part Number: MC33690DWER2
• Description: IC STAND ALONE TAG READER 20SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MC33690DWER2

• Rf Type: Read / Write
• Frequency: 125kHz
• Features: Wide Supply Voltage Range
• Package / Case: 20-SOIC (0.300", 7.50mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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The tag reader module is dedicated for automotive or industrial applications where information has to be transmitted
contactless.The tag reader module is a write/read (challenge/response) controller for applications that a demand high security
level.
The tag reader module is connected to a serial-tuned LC circuit that generates a magnetic field power supplying the tag. The
use of a synchronous sample and hold technique allows communication with all available tags using admittance switching
producing absorption of the RF field.
Load amplitude or phase shift modulation can be detected at high bit rates up to 8 kHz. The typical operational carrier frequency
of the tag reader module with an 8 MHz clock is 125 kHz.
Freescale Semiconductor
Description
Tag Reader Module
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Table 3. Pin Function Descriptions (continued)
AGND
DOUT
XTAL2
XTAL1
CEXT
LVR
MC33690 Standalone Tag Reader Circuit, Rev. 5
AM
Rx
Tx
K
Demodulator ground
Comparator reference input
Demodulator output (5V)
Low Voltage Reset input/output
Oscillator output
Oscillator input
Amplitude modulation input
ISO 9141 transmitter output and receiver input
ISO 9141 receiver monitor output
ISO 9141 transmitter input
Description
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