ATSAM4S-WPIR-RD Atmel, ATSAM4S-WPIR-RD Datasheet - Page 14

• Manufacturer Part Number: ATSAM4S-WPIR-RD
• Description: Development Boards & Kits - ARM SAM4S16 W.PIR CAMERA REF. DESIGN
• Manufacturer: Atmel

Specifications of ATSAM4S-WPIR-RD

• Rohs: yes
• Product: Reference Designs
• Tool Is For Evaluation Of: ATSAM3S4BA
• Core: ARM Cortex M3
• Interface Type: JTAG, USB
• Operating Supply Voltage: 5 V
• Data Bus Width: 32 bit
• For Use With: RF231USB-RD

4.5
4.5.1
Figure 4-6. Transceiver clock connection.
RF section
The Atmel AT86RF231 radio transceiver incorporates all RF and BB critical components necessary to transmit and
receive signals according to IEEE 802.15.4 or proprietary ISM data rates.
A balun, B1, performs the differential to single-ended conversion of the RF signal to connect the Atmel AT86RF231 to
the ceramic antenna, passing a tuning line with a network of inductors and capacitors along the line. The balun unit’s
output connections (RFN, RFP / pins 3, 4) are directly routed to the differential RF I/O pins of the AT86RF231 radio
transceiver. Refer to Chapter
Figure 4-7. 50Ω balun.
Cermic chip antenna connection
The ceramic chip antenna is designed at the outermost location of the RF231USB-RD stick to enable good transmission
properties into the environment.
C19
1µF
CLKM
EVDD
1.5pF
GND
C28
GND
Transceiver
15
16
GND
p
R11
470R
DEVDD
DVSS
GND
Atmel AVR2030: ATRF231USB – Hardware User Manual [APPLICATION NOTE]
GND
5
nc
for further information about the antenna tuning.
B1
2450FB15L0001E
6
GND
IC3
AT86RF231-ZU
PA2/PWMH2/SCK0/DATRG/WKUP2
PA0/PWMH0/TIOA0/A17/WKUP0
PA1/PWMH1/TIOB0/A18/WKUP1
PB14/NPCS1/PWMH3/DAC1
PA4/TWCK0/TCLK0/WKUP3
PA5/RXD0/NPCS3/WKUP4
PB13/PWML2/PCK0/DAC0
PA7/RTS0/PWMH3/XIN32
PA3/TWD0/NPCS3
PA6/TXD0/PCK0
MCU
59
63
48
47
44
43
36
35
34
32
PLL_SAM7S
IRQ_SAM3S
CLKM
HWID1
HWID2
HWID3
42018A−AVR−08/2012
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