OLIMEX SAM3-P256 User Manual
SAM3-P256 development board
user's manual
All boards produced by Olimex are ROHS compliant
Rev. C, September 2014
Copyright(c) 2011, OLIMEX Ltd, All rights reserved
Page 1
INTRODUCTION:
Atmel's ATSAM3S4BA-AU is a member of a series of Flash microcon-
trollers based on the high performance 32-bit ARM Cortex-M3 RISC processor. It
operates at a maximum speed of 64 MHz and features a 256 Kbyte Flash and a 48
Kbyte SRAM, Full Speed USB Device port with embedded transceiver, a High
Speed MCI for SDIO/SD/MMC, an External Bus Interface featuring a Static Memory Controller providing connection to SRAM, PSRAM, NOR Flash and NAND
Flash, 2x USARTs, 2xUARTs, 2xTWIs, 3xSPI, an I2S, as well as 1 PWM timer, 6x
general-purpose 16-bit timers, an RTC, an ADC, a 12-bit DAC and an analog comparator.
SAM3-P256 has JTAG, UEXT, USB and two RS232 connectors, power jack,
potentiometer, two user buttons, two status LEDs, power-on led, reset button and
prototype area for all microcontroller's ports. All this gives the customer chance to
build a wide range of applications.
BOARD FEATURES:
Microcontroller: ATSAM3S4BA-AU.
standard JTAG connector with ARM 2×10 pin layout for program-
ming/debugging with ARM-JTAG
USB connector
Two channel RS232 interface and drivers
SD/MMC card connector
two buttons
trimpot connected to ADC
thermistor connected to ADC
two status LEDs
on board voltage regulator 3.3V with up to 800mA current
single power supply: 6VDC or 4.5 VAC required
power supply LED
RESET circuit
RESET button
12.000 Mhz crystal on socket
UEXT connector
prototype area for all microcontroller's ports
PCB: FR-4, 1.5 mm (0,062"), red soldermask, silkscreen component
print
Dimensions: 120×80 mm (4.72×3.15")
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ELECTROSTATIC WARNING:
The SAM3-P256 board is shipped in protective anti-static packaging. The board
must not be subject to high electrostatic potentials. General practice for working
with static sensitive devices should be applied when working with this board.
BOARD USE REQUIREMENTS:
Cables: The cable you will need depends on the programmer/debugger you use.
OLIMEX debuggers need USB type B to USB type A cable to connect to a
computer.
Hardware: The best idea is to use a debugger made by Atmel, since the main
microcontroller is made by Atmel.
Another reliable choice is Segger's JLINK which is well-supported works with most
ARM products.
If you are looking for open-source development please check the Olimex-made
debuggers: ARM-USB-OCD, ARM-USB-TINY, ARM-USB-OCD-H, ARM-USB-
TINY-H if you work with OpenOCD, IAR EW for ARM, Rowley Crossworks for
ARM, CooCox, GCC compilers, etc.
PROCESSOR FEATURES:
SAM3-P256 board use ARM-based microcontroller ATSAM3S4BA-AU LQFP64
from Atmel Corporation with these features:
Core
ARM® Cortex®-M3 revision 2.0 running at 64 MHz
Memory Protection Unit (MPU)
Thumb®-2 instruction set
Pin-to-pin compatible with AT91SAM7S legacy products (48- and 64-pin
versions)
Memories
256 Kbytes embedded Flash, 128-bit wide access, memory accelerator,
single plane
48 Kbytes embedded SRAM
16 Kbytes ROM with embedded bootloader routines (UART, USB) and
IAP routines
Memory Protection Unit (MPU)
System
Embedded voltage regulator for single supply operation
Page 3
Power-on-Reset (POR), Brown-out Detector (BOD) and Watchdog for
safe operation
Quartz or ceramic resonator oscillators: 3 to 20 MHz main power with
Failure Detection and optional low power 32.768 kHz for RTC or
device clock
High precision 8/12 MHz factory trimmed internal RC oscillator with 4
MHz default frequency for device startup. In-application trimming
access for frequency adjustment
Slow Clock Internal RC oscillator as permanent low-power mode
device clock
Two PLLs up to 130 MHz for device clock and for USB
Temperature Sensor
Up to 22 peripheral DMA (PDC) channels
Low Power Modes
Sleep and Backup modes, down to 3 μA in Backup mode
Ultra low power RTC
Peripherals
USB 2.0 Device: 12 Mbps, 2668 byte FIFO, up to 8 bidirectional
Endpoints. On-Chip Transceiver
2 USARTs with ISO7816, IrDA®, RS-485, SPI, Manchester and Modem
Mode
Two 2-wire UARTs
2 Two Wire Interface (I2C compatible), 1 SPI, 1 Serial Synchronous
Controller (I2S), 1 High Speed Multimedia Card Interface (SDIO/SD
Card/MMC)
3 Three-Channel 16-bit Timer/Counter with capture, waveform,
compare and PWM mode. Quadrature Decoder Logic and 2-bit Gray
Up/Down Counter for Stepper Motor
4-channel 16-bit PWM with Complementary Output, Fault Input, 12-
bit Dead Time Generator Counter for Motor Control
32-bit Real-time Timer and RTC with calendar and alarm features
10-channel ADC with differential input mode and programmable gain
stage
Two 12-bit DAC outputs
One Analog Comparator with flexible input selection, Selectable input
hysteresis
32-bit Cyclic Redundancy Check Calculation Unit (CRCCU)
I/O
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47 I/O lines with external interrupt capability (edge or level
sensitivity), debouncing, glitch filtering and on-die Series Resistor
Termination
Three 32-bit Parallel Input/Output Controllers, Peripheral DMA
assisted Parallel Capture Mode
Page 5
BLOCK DIAGRAM:
Page 6
MEMORY MAP:
Page 7
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