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UM10572
PCA9955 demonstration board OM13330
Rev. 1 — 7 June 2012
Document information
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Content
Keywords
Fm+ I2C-bus, PCA9955, RGB and white LEDs, 16-channel × 8-bit PWMs
Abstract
The OM13330 is an add-on to 9-pin connector of the NXP I2C demo board
2005-1 or Fm+ I
easy to test and design with the PCA9955, a 16-channel Fast-mode Plus
(Fm+) 57 mA constant current and outputs allow up to 40 V for LED
supply. These boards, along with the Win-I2CUSB Lite GUI (PC based),
provide an easy to use evaluation platform.
2
C-bus development board. This daughter board makes it
User manual
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Table of Contents
Related Manuals for NXP Semiconductors PCA9955
Summary of Contents for NXP Semiconductors PCA9955
- Page 1 2005-1 or Fm+ I C-bus development board. This daughter board makes it easy to test and design with the PCA9955, a 16-channel Fast-mode Plus (Fm+) 57 mA constant current and outputs allow up to 40 V for LED supply. These boards, along with the Win-I2CUSB Lite GUI (PC based),...
- Page 2 UM10572 NXP Semiconductors PCA9955 demonstration board OM13330 Revision history Date Description 20120607 user manual; initial release Contact information For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com UM10572 All information provided in this document is subject to legal disclaimers.
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Page 3: Introduction
PCA9955 demonstration board OM13330 1. Introduction The PCA9955 evaluation board features LEDs for color mixing, blinking and dimming demonstrations. A graphical interface allows the easy exploration of the different functions of the driver. The board can be connected in series with other I C-bus demo boards to create an evaluation system. -
Page 4: Installation
USB cable. Once the board is connected, connect the USB cable and start the WIN-I2CUSB Lite software. You are now ready to evaluate the PCA9955. Fig 1. PCA9955 demo board (OM13330) mounting to the I2C demo board 2005-1 (OM6275) UM10572 All information provided in this document is subject to legal disclaimers. -
Page 5: Om13330 Connection To Win-I2Cusb Hardware Adapter Board
Connect the OM13330 board to the Win-I2CUSB board before connecting the USB cable. Once the board is connected, connect the USB cable and start the WIN-I2CUSB Lite software. You are now ready to evaluate the PCA9955. Fig 2. PCA9955 demo board (OM13330) connecting to the Win-I2CUSB board UM10572 All information provided in this document is subject to legal disclaimers. -
Page 6: Hardware Description
J3 and J5 (5-pin) are for connection to PCA9665/PCU9669 mini boards and cascade the second PCA9955 demo board. • J1 selects V power for PCA9955, connected 1-2 for V = 3.3 V and connected 2-3 for V = 5 V. -
Page 7: Schematic
+5 V LED1 LED14 (output enable 9-pin connector to/from I2C 2005-1 LED1 LED14 for PCA9952) LED2 LED13 LED2 LED13 demo board for PCA9952/PCA9955 10 μF 10 μF LED3 LED12 HEADER 7x2/SM LED3 LED12 CON9-female I2CUSB CONNECTOR +5 V do not populate... -
Page 8: Om13330 Demonstration Board Main Components
3.3 V or 5 V indicator 8. PCA9955 evaluation steps The PCA9955 functions are controlled by WIN-I2CUSB Lite GUI. Refer to the PCA9955 data sheet for additional information on the registers and functionality. Connect the hardware as described in Section 4. - Page 9 UM10572 NXP Semiconductors PCA9955 demonstration board OM13330 – ‘Other’ GRPPWM is group PWM for global brightness control, GRPFREQ is group frequency for global blinking control when group control = blinking in Mode 2 register, PWMALL is brightness control for all LED outputs, OFFSET is control LED...
- Page 10 UM10572 NXP Semiconductors PCA9955 demonstration board OM13330 Fig 6. Device configuration screen for PWM[0:7] Fig 7. Device configuration screen for PWM[8:15] UM10572 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
- Page 11 UM10572 NXP Semiconductors PCA9955 demonstration board OM13330 Fig 8. Device configuration screen for LEDOUT Fig 9. Device configuration screen for LED output current setting UM10572 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
- Page 12 UM10572 NXP Semiconductors PCA9955 demonstration board OM13330 Fig 10. Device configuration screen for ‘Other’ (Group and All registers) UM10572 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved. User manual Rev. 1 — 7 June 2012...
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Page 13: Color Mixing And Blinking Leds
UM10572 NXP Semiconductors PCA9955 demonstration board OM13330 8.2 Color mixing and blinking LEDs To set up a blinking demo, repeat step 1 through step 7 as in Section 8.1, then do the following: 1. In the Mode 2 (= 0x25) selection window (middle left), check the ‘Group control = dimming’... -
Page 14: Abbreviations
UM10572 NXP Semiconductors PCA9955 demonstration board OM13330 10. Abbreviations Table 2. Abbreviations Acronym Description ElectroStatic Discharge Graphical User Interface C-bus Inter-Integrated Circuit bus Integrated Circuit Light-Emitting Diode Personal Computer Pulse Width Modulator Random Access Memory Red/Green/Blue RGBA Red/Green/Blue/Amber SMBus System Management Bus Universal Serial Bus 11. -
Page 15: Legal Information
In no event shall NXP Semiconductors, its affiliates or their suppliers be liable Notwithstanding any damages that customer might incur for any reason to customer for any special, indirect, consequential, punitive or incidental whatsoever, NXP Semiconductors’... -
Page 16: Table Of Contents
......8 PCA9955 evaluation steps ....8 Color mixing and dimming LEDs .
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