Please note ! Starting from July 2018 we make by default just color green Ariettas G25. The only difference between the legacy black version (ARIETTA-G25) and the new green version (ARIETTA-G25-V) is the solder mask color. To order the legacy black version a Minimal Quantity Order of 100 pcs is requested.

Main features Long term availability

Microchip AT91SAM9G25 MPU (ARM9@400Mhz)

DDR2 RAM 128/256 MB @ 16 bit

MicroSD holder push-pull type

MicroUSB device port for power-in and gadget device

User configurable led

User configurable push-button

Power supply: 5VDC via microUSB or 3.3VDC using the PCB pads

Line levels: TTL 3.3V (NOT 5V tolerant)

Operative temperature range: ARIETTA-G25 (128MByte RAM): -20 +70 °C ARIETTA-G25-256 (256MByte RAM): -0 +70 °C

Size: 53x25mm

PCB layers: 8

RoHS and REACH compliant. Low EMI

Designed and Made in Italy

Exposed signals J4 Placement for a 20x2 pins connector pitch 2.54mm (100 mils) (pinout): 1 full-speed usb host 1 hi-speed host/device (same port lines used for the microUSB port) 1 hi-speed host (same lines used for the WiFi adapter) UART lines: 3 ports I2C bus lines: 2 bus SPI bus lines: 1 bus with up to 3 chip select (5 to 50 MHz) PWM lines: 4 lines A/D converters lines: 4 channels@10 bit SSC/I2S interface for audio soc No video or TFT output but the SPI bus can be used for small TFT display and I2C bus for small alphanumeric LCD No direct LAN interface but the USB ports can be used with USB to LAN adapter

Placement for a 20x2 pins connector pitch 2.54mm (100 mils) (pinout): DP placements for a 6 pin male strip pitch 2.54 (100 mils) with the Debug Port Interface lines

placements for a 6 pin male strip pitch 2.54 (100 mils) with the Debug Port Interface lines Placement for IEE802.11 b/g/n Wi-Fi module WiFi USB adapter

Please note that not all the signales are available at the same time. Some line are muxed together.

Pin muxing

Most of the Arietta lines on J3 can be configured for additional functions using the muxing cabability of the Atmel MPU. The default configuration depends from the at91-arietta.dtb file stored on the first micro SD partition and used at startup by the Linux Kernel.

The Arietta dynamic pinout page may helps you to understand what are the available peripherals and how to generate this file.

Software features