NXP Semiconductors introduced new development platforms for DALI and DMX512 wired lighting control systems based on the low-cost, low-power 32-bit ARM Cortex-M0 processor.
The new evaluation systems feature an NXP LPC1100XL series microcontroller, which is well suited to handle the communication requirements for intelligent lighting projects using DALI and DMX.
In addition, the DMX512 system includes a master controller board with the LPC11U00, a highly flexible USB microcontroller, also based on the Cortex-M0. Both systems can be connected to any of NXP’s lamp drivers using the PWM outputs of the Cortex-M0 processor. NXP also offers an optional evaluation system to simplify RGB LED power stage design.
The popular LPC1100XL series microcontroller offers a combination of features making it well suited for intelligent lighting projects. These include storage of scene settings and other programs in non-volatile memory, using EEPROM emulation in Flash or by using integrated EEPROM. Offering up to four 16-bit and 32-bit timers, the MCU series can generate up to 11 PWM signals to control and dim the ballast.
The DMX512 evaluation system will include a master unit featuring the LPC11U14 microcontroller. Based on the ARM Cortex-M0, the LPC11U00 series delivers USB connectivity with up to 10 configurable physical endpoints and extensive power controls. Another option is the LPC1300 series which includes USB mass storage and HID class drivers stored in ROM.
As an additional option, NXP offers a small form factor RGB LED power stage with a low component count. The power stage meets the EMC requirements of commercial lighting applications and offers energy savings for both DALI and DMX wired lighting control systems. LED dimming is implemented using the PWM input of the NXP UBA3070 DC-to-DC LED driver, which offers up to 98% efficiency.
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