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UOLED-96-G1(SGC) Datasheet(PDF) 9 Page - List of Unclassifed Manufacturers |
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UOLED-96-G1(SGC) Datasheet(HTML) 9 Page - List of Unclassifed Manufacturers |
9 / 16 page µOLED-96-G1(SGC) Data Sheet 5. Power-Up and Reset When the μOLED module comes out of a power up or external reset, a sequence of events must be observed before attempting to communicate with the module: • Allow up to 500ms delay after power-up or reset for the module to settle without a uSD card inserted. If a uSD card is inserted the initialization time of the particular card will need to be added, better quality cards tend to initilize in about 75ms or quicker, lower quality ones can take up to a second. Do not attempt to communicate with the module during this period. The module may send garbage on its TX Data line during this period, the host should disable its Rx Data reception. • Within 100ms of powering up, the host should make sure it has its Tx line pulled HIGH. If the host Tx (μOLED RX) is LOW or floating after the 100ms period, the module may misinterpret this as the START bit of the auto-baud character and lock onto some undesired baud rate. • The host transmits the auto-baud character (capital U, 55hex) as the first command so the module can lock onto the host’s baud rate. Once the host receives the ACK, the μOLED module is now ready to accept commands. 5.1 Splash Screen on Power-Up The μOLED-96-G1(SGC) will wait up to 5 seconds with its screen blank for the host to transmit the Auto-Baud command (‘U’, 55hex). If the host has not transmitted the Auto-Baud command by the end of this period the module will display a built- in splash screen. If the host has transmitted the Auto-Baud command, the screen will remain blank. This wait period is for those customer specific applications where the splash screen is undesired. 5.2 4DSL Memory Card Script Program The complete command summary for the GOLDELOX-SGC is listed in the previous section 3 of this document. The command execution is not only limited to the host sending these via the serial interface. The majority of them can be composed as a script and written into memory card. A 4DSL script program is a sequence of those commands that reside and can be executed from inside the memory card and these can be a combination of graphics, text, image, video and audio commands. Complete list of commands available for the scripting program is listed in a separate document titled: “GOLDELOX-SGC-COMMANDS-SIS.pdf” 5.3 Auto-Run Card Script Program The GOLDELOX-SGC embedded in the μOLED-96- G1(SGC) module has a feature that will auto run a preloaded script program, on the uSD/uSDHC memory card, on power-up. If the SWITCH input (pin 7) is connected to GND (on power-up) and if there is a script program present in the memory card then the device will auto run the script program. This is a useful feature for those stand alone applications where the device does not require a host controller to play a slide show of images, video clips, etc. © 2011 4D Systems www.4dsystems.com.au Page 9 of 16 Reset Sequence of Events Power-Up/Reset Delay HOST uOLED-96-G1 Auto-Baud ('U'', 55h) ACK (06h) ..... ..... Auto-Run: Short jumper before Power-Up |
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