mc33690dw Freescale Semiconductor, Inc, mc33690dw Datasheet - Page 20

• Manufacturer Part Number: mc33690dw
• Description: Standalone Tag Reader Circuit Starc
• Manufacturer: Freescale Semiconductor, Inc

© Motorola, Inc., 2002.
If no external MOS transistor is necessary to increase the voltage regulator current capability, the pins GATE
and SOURCE must be left unconnected.
C
To preserve the demodulator sensitivity,
AGND using a low resistance path.
To microcontroller
power supply pin
1
is not required for the STARC functionality and only acts as a reservoir of energy.
To microcontroller
port
VBAT
VSS
C
L
A
A
10
C
R
C
2
u
1
1
F
C
EXT
10
C
R
0n
3
2
NC
SOURCE
F
NC
R
10nF
Freescale Semiconductor, Inc.
AGND
CEXT
A
Figure 15 : Direct connection to a microcontroller
GATE
VSS
VDD
TD2
TD1
For More Information On This Product,
RD
Tx
Rx
MOTOROLA SEMICONDUCTORS PRODUCTS
Go to: www.freescale.com
C
EXT
MC33690
STARC
and
R
20
2
should be connected to AGND, and VSS connected to
VSUP
LVR
XTAL1
XTAL2
MODE1
MODE2
DOUT
AM
K
VDD
1MΩ
revision 4.8, 5 February 2002
8.2pF
8.2pF
To microcontroller
port/reset pin
To microcontroller
port
8MHz
VBAT
510Ω