Oryx Board - Ultra Low-Power Reference Design for mobile applications

The ORYX Board is powered by NXPs LPCxpresso Development Board. It includes a full in circuit debugger with JTAG interface (LPC-LINK). When connected to a PC, the board is powered over the USB interface. When operating in standalone mode, the board runs out of a rechargeable coin cell battery (LIR2032). The battery can be recharged in a few hours when re-connected to USB.
The central Microcontroller is a NXP Cortex-M0 LPC11U14 with 32k of internal falsh, 8k RAM and USB, I²C, SPI and analog peripherals. Connected to the I²C Bus are an accelerometer ADXL345BCCZ ADXL345BCCZ from Analog Devices, a Real Time Clock from NXP (PCF8523), a Temperature Sensor and a Capacitive Touch Sensor (PCF8885 from NXP). A separate power switch allows the I²C Bus to be disabled.
Connected to the SPI Interface is a serial Flash for Data Storage and an ultra low power Display from Sharp Model LS01B4DN04, 1,35 inch diagonal, 4µA with up-date Rate of 1Hz, 2µA for static image.
Both the Display and the Flash have separate power switches to be disabled.
Provisions have been made to measure the power consumption of the components and the whole system for easy development of software. The external components can use an IRQ to wake the MCU from its Power Down Mode.

The Board is shipped with example software code to use the full functionality of all featured products.

Key components:

• NXP CPU: Model LPC11U14 MCU, Cortex-M0, 8mA for 50MHz, 2mA for 12MHz, 0.22µA Deep Power Down Mode
  
  • Datasheet: http://www.nxp.com/documents/data_sheet/LPC11U1X.pdf
• Sharp Memory LCD: Model LS013B4DN04, 1, 35inch diagonal, 4µA with up-date Rate of 1Hz, 2µA for static image.
• Analog Devices: Accelerator sensor: Model ADXL345BCCZ ADXL345BCCZ, power input 100nA stand-by 
  • Datasheet: http://www.analog.com/static/imported-files/data_sheets/ADXL345.pdf
• NXP: Temperature sensor Model I²C active, power input max. 300µA, typ. 100µA, 0.2µA stand-by
• Micron Technology: SPI-NOR Flash Memory, 4Mbit, power input 20µA stand-by, 1.5µA Deep Power Down
• NXP: PCF8885 Multichannel Touch, power input active 10µA, 0.1µA Sleep Mode
• Linear Technologies: Shunt Charger Type LTC4071EMS8E#PBF LTC4071EMS8E#PBF, power input 0,55µA, deep dis-charge protection – disconnect at < 0,1nA
  • Datasheet: http://cds.linear.com/docs/Datasheet/4071fc.pdf