LP8866-Q1: Looking for a small footprint 4-character 7-segment LCD display driver

Hi Thomas,

Do you have any more questions?

Hi Thomas,

I will close this thread temporarily and you can keep asking questions here if you have more questions.

Thank you for these references Charles (indeed, I do not need an automotive device).  From what I can tell thus far, the devices you mentioned could be made to work essentially stand alone, with one IC powering 16 LEDs (e.g., two 7-segment displays, or two ICs powering four 7-segment displays).  Alternatively, if one coordinated closely with the MCU, one could multiplex through and control n*16 channels using n COMSEL lines.  

Quick question: I have found the MAX6958-MAX6959, which apparently builds in the COMSEL lines into the LED driver itself, thus apparently requiring less attention by the MCU to control severall channels using a multiplexed solution via multiple COMSEL lines.  Does TI carry anything like that, implementing the COMSEL control lines into the LED driver IC?

https://datasheets.maximintegrated.com/en/ds/MAX6958-MAX6959.pdf

Thank you Charles. From what I can discern so far (but please correct me if I’m wrong here, which is quite possible!), Figs 12/13 of the application note you cited seems to suggest that time multiplexing, to control more than 16 LEDs using a single TLC59283 or other TI IC like it, is really performed by the connected MCU, using either a handful of common lines from the MCU itself, or (via continual updates over the connected SPI line, bogging down both that spi channel and the MCU driving it) using outputs from the TLC59283 converted into common lines. What was quite attractive in the (very expensive, but why??) Maxim part I cited previously is that the time multiplexing logic is actually built into that LED driver itself, so no further spi communication is needed, once the message on the display is set up, even if time multiplexing is used, until the message on the display itself must change. So, question: is the TLC59283, or any other TI led driver, capable of offloading the time multiplexing logic for led driving from the connected MCU? It seems like this is really a tiny amount of additional logic, but I don’t yet see it explicitly written that the TI led drivers can handle coordinating it??