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SWRU294
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6.3.4 MSP-FET Power
The SmartRF TrxEB can be powered via a MSP430 debugger such as MSP-FET430UIF. The
power source selection jumpers should in that case short circuit pin 7-8 of header P17 (Figure
11). Note that the MSP-FET will not power the EB if pin 9-10 of header P17
(“LCL”) is short
circuited.
Figure 11
– P17 jumper settings to power EB using a MSP-FET
6.4 LCD
The SmartRF TrxEB comes with a 128x64 pixels display from Electronic Assembly (DOGM128E-
6) [7]. The LCD display is available to the onboard MSP430 via an SPI interface, enabling
software development of user interfaces and demo use. The LCD display shares SPI interface
with the serial flash device (section 6.7).
The recommended operating condition for the LCD display is a supply voltage between 3.0 V and
3.3 V. The min (max) operating temperature is -20 (+70)
˚C.
6.5 Accelerometer
The SmartRF TrxEB is equipped with a digital accelerometer from VTI Technologies (CMA3000-
D01) [8]. The accelerometer is available to the onboard MSP430 MCU via an SPI interface and
has a dedicated interrupt line to the MCU. The onboard accelerometer is suitable for application
development, prototyping and demo use. See sections 9.2.2 and 10.2.2 for details on
accelerometer axis orientation for EB revision 1.3.0 and 1.5.0, respectively.
The recommended operating condition for the accelerometer is a supply voltage between 1.7 V
and 3.6 V. The min (max) operating temperature is -40 (+85)
˚C.
6.6 Ambient Light Sensor
The SmartRF TrxEB has an analog SFH 5711 ambient light sensor from Osram [9] that is
available to the onboard MSP430, enabling quick application development for demo use and
prototyping. The light sensor is placed outside the bottom right corner of the LCD display.
The recommended operating condition for the ambient light sensor is a supply voltage between
2.3 V and 5.5 V. The min (max) operating temperature is -40 (+85)
˚C.
6.7 Serial Flash
SmartRF TrxEB has a M25PE20 flash device
– a paged 256 KB serial flash memory from Micron
[10]. The device gives the MSP430 access to extra flash, enabling over-the-air upgrades and
more. The serial device shares SPI bus with the LCD display (section 6.4).
The recommended operating condition for the serial flash device is a supply voltage between 2.7
V and 3.6 V. The min (max) operating temperature is -40 (+85)
˚C.