MC33690DWE Freescale Semiconductor, MC33690DWE Datasheet - Page 25

• Manufacturer Part Number: MC33690DWE
• Description: IC STAND ALONE TAG READER 20SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MC33690DWE

• 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

Freescale Semiconductor
Note: If no external MOS transistor is necessary to increase the voltage regulator current capability, the pins GATE and
To microcontroller
power supply pin
To microcontroller
port
VSS
VBAT
C
L
SOURCE must be left unconnected. C
energy. To preserve the demodulator sensitivity, C
to AGND using a low resistance path.
A
A
10uF
C
R
C
2
1
1
C
EXT
100nF
C
R
3
2
NC
SOURCE
NC
10nF
R
AGND
CEXT
A
GATE
Figure 26. Direct Connection to a Microcontroller
VDD
VSS
TD2
TD1
RD
Tx
Rx
MC33690 Standalone Tag Reader Circuit, Rev. 5
1
is not required for the STARC functionality and only acts as a reservoir of
STARC
EXT
VSUP
and R
2
should be connected to AGND and VSS connected
LVR
XTAL1
XTAL2
MODE1
MODE2
DOUT
AM
K
1MW
VDD
8.2pF
8.2pF
To microcontroller
port/reset pin
Application Schemes
To microcontroller
port
8 MHz
VBAT
510W
25