ATSAM4S-WPIR-RD Atmel, ATSAM4S-WPIR-RD Datasheet - Page 8

• 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.
4.1
Functional description
The Atmel RF231USB-RD stick carries a high-performance Atmel CORTEX-M3 microcontroller, which connects to the
radio transceiver AT86RF231 and various peripheral units. The block diagram of the RF231USB-RD USB radio stick is
shown in
The Atmel AT86RF231 interfaces the ceramic chip antenna which is designed at the outermost location of the
RF231USB-RD stick to provide sufficient signal strength and quality to reach line of sight distances of greater than
200m.
The transceiver is interfaced by the MCU via SPI and several GPIO lines. Two separate IRQ lines are available and
routed to MCU pins optionally acting as timer inputs. CLKM outputs the transceiver clock.
Figure 4-1. Functional overview block diagram.
The critical RF components mounted on the board are encapsulated. A RF shielding is affixed at the board top side to
house these components to guarantee an EMI shielded environment.
The ATSAM3S4BA has a flexible clock system. Primarily the onboard 18.432MHz crystal clocks a phase-locked loop
(PLL) from which the microcontroller core and all of its internal peripheral units are sourced. The radio transceiver
provides additional clock inputs.
The soldered USB type A plug represents an USB 2.0 interface and can be used as programming and debugging
interface by default. It is used to power the RF231USB-RD stick. The 3.3V supply voltage is generated by a LDO
voltage regulator mounted at the bottom side of the board.
The USB stick is populated with a 2GB flash memory on its bottom side to store user defined data. The flash is also
intended to be used as mass storage device. Board-specific information such as board identifier, the node MAC
address, and production calibration values are stored in a special upper memory block of the flash memory.
A 10-pin connector assembled at the bottom side is designed for programming via JTAG interface. A matching
programming adapter that is equipped with a 20-pin standard ARM-JTAG connector has to be used for this.
To deliver status information, a basic user interface consisting of three LEDs is provided on the board.
An ERASE pin can be used to delete the flash’s content.
Pin assignment
In
options is given.
VUSB
4.5 .. 5.5V
JTAG
DBGU
USB
Table 4-1
Figure
an overview of the RF231USB-RD’s pin assignment of components and peripherals together with operating
4-1.
ATSAM3S4BA
2 GByte Flash
VCC
Atmel AVR2030: ATRF231USB – Hardware User Manual [APPLICATION NOTE]
MMC
GPIO
VCC
3.3V
SPI
IRQ
AT86RF231
Chip antenna
42018A−AVR−08/2012
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