The MM5316 datasheet doesn’t say that this part is capable of driving LEDs. It is too high voltage and too low current capability. Use some other chip for that.
David Forbes, Tucson AZ > On May 16, 2025, at 6:53 AM, [email protected] wrote: > > Hi all, > I’m experiencing a strange timing problem when using an MM5316 clock chip to > drive a 7-segment LED display. The clock chip drives non-multiplexed > individual segments for each of the four digits for minutes, 10 minutes, > hours, and 10 hours, and it is designed to drive VFDs directly. It works > fine when I set it up to drive IV-12 VFDs. I’m powering the chip with about > 12 vdc. But when I connect a 7-segment LED display to it using 560R voltage > dropping resistors to each segment, the minutes digit advances every 30 > seconds rather than 60 seconds. > > Anyone have any thoughts on what might be causing this to happen? > > TIA, > Randy > > > Sent from my iPhone > > -- > You received this message because you are subscribed to the Google Groups > "neonixie-l" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion, visit > https://groups.google.com/d/msgid/neonixie-l/0D6422E0-9492-495D-8692-D96E680B0AE6%40gmail.com. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion, visit https://groups.google.com/d/msgid/neonixie-l/81EF9844-5383-487A-A487-14272027B259%40gmail.com.
