The Overo motherboard packs a lot of computing power in a tiny package.

Feature Overview

The feature list for the Overo motherboard(s) is posted here .

Basic features

 

• TI OMAP3503 applications processor featuring the ARM® Cortex™-A8
• up to 256 MB low-power DDR RAM
• 256MB NAND flash
• microSD slot
• 17 mm x 58 mm
• 6 grams

I/O

The motherboard also brings a wide selection of signals to two 70-pin connectors on the bottom of the motherboard. These are 1.8V logic.

High-speed data

• USB 2.0 high-speed on-the-go
• MMC (8-bit wide)

Peripheral interface signals

• 24-bit LCD signals
• Serial ports
• I2C and 1-Wire
• SPI
• GPIO
• PWM (2 from the OMAP, 4 from the TPS65950)

Analog, reset and power signals

• Stereo audio line in and headset output
• Microphone and sub-microphone input signals
• A/D (6 lx 10 bits, 2.4V maximum)
• Reset, power-on, and wake-from-sleep input
• Backup battery

There is also a flex cable connector on the top side for camera signals.

Typical Overo systems will consist of two boards, the Overo motherboard and a daughter card, secured using 4 x 0-80 mounting holes in the corners of the overo motherboard. Daughter cards select from the many features listed above to implement a system tailored to a specific purpose.

The photo below illustrates how the two board system is connected and where the external connections are located.