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LCD showing mostly jibberish on 16F That’s just weird, selecting No and None in the Internal Oscillator column of the product selector produced the above list. If the actual speed is different, then 61f716 timings will be off. Join Date Oct Posts The time now is LCD showing mostly 116f716 on 16F Your open pins were probably acting like little antennas and picking up something nearby on occasion that just happened to be what the pic was expecting as an OSC frequency, hence the occasional flicker of life.

LCD showing mostly jibberish on 16F I have used both the pic16f and datasehet are in the list. I’d add a note to the post with the list but unfortunately I’m not trusted to edit my own posts. Sorry for the confusion.

I’m surprised it worked at all with no external osc components. I don’t think it’s a connection problem but I will triple check.

So, I think it’s either a slow controller datashewt a hardware problem like one of the datalines not reaching the controller. I will add a crystal osc tomorrow and change the osc source and see how I go.

LCD showing mostly jibberish on 16F I don’t have a 16F to play with, but the following code works with an 18F running at 4mhz from its internal clock. Not real happy with a couple of the SMD solder pads for the pic. I’m using the dos-based pickit2 so I don’t get to choose the option bits before I hit program. Having said that, in my circuit the OSC pins are left floating.


Have a look at my last post in this thread http: When I tried your code it compiled OK, but you have one line missing which could be the cause Code:.

LCD showing mostly jibberish on 16F Henrik, That would explain why I can’t find an easy way of turning it on and off. Glad you got it sorted! With both OSC pins floating you have neither. Set the command and data times up higher, still the same. The list is flawed and so is the data Microchip is using in their selector tool – which is what generated the list.

Apart from that it’s the usual suspects like ADC and comparators but your device doesn’t have any of that on the pins used so that can’t be it.

PIC16F Datasheet(PDF) – Microchip Technology

LCD showing mostly jibberish on 16F That seems correct. Thanks for pointing that out Mark! Tomorrow I’ll resolder at the workshop and cross my fingers. It seems unclear to me in the datasheet what frequency the internal OSC runs at and if any external components are required. I’m sure I recall using a specific command to use the internal osc in the past, whereas this datasheet indicates clearing option register bit 5 will turn it on?

Reading a Hex value from a Modem and showing it as Decimal. LCD showing mostly jibberish on 16F Thanks for thereply. I haven’t gone that high with the numbers so I’ll try that in the morning. LCD showing mostly jibberish on 16F To be honest I don’t really know how to set the option register bits with the setup I am using now.


I am using the internal oscillator, could that be a cause?

(PDF) 16F716 Datasheet download

Join Date Dec Posts How is it doing anything? Datzsheet numbers in diffrent ways? I put a 4 line lcd on and the same problem occurs. Thought that all pics had that??

16F Hoja de datos ( Datasheet PDF ) – PIC16F

I put a 4Mhz osc on it thismorning, works perfectly. The issue is that I get mostly jibberish all over the screen changing constantly, with glimpses of the text I’m trying to put there. And it doesn’t seem to be in your list Henrik.

LCD showing mostly jibberish on 16F Hi, Actually, according to the product selector on Microchips website only 18 out of around models which are in production is missing an internal oscillator of one type or another.

Both have internal oscillators to 8mhz. I have replaced the pic already and suspect I didn’t get enough heat onto the pad 2nd time round. Similar Threads Daatasheet studio not showing data, though it is receiving 16f761 By Tina10 in forum Schematics.

LCD showing mostly jibberish on 16F I cut my teeth on the 16F and it is my understanding it does not have an internal oscillator. I think you’re right Henrik, I’ve datasheft trying to make it do something it isn’t meant to do. LCD showing mostly jibberish on 16F Obviously by using the internal oscillator you can omit the external crystal shown in the easyPIC5 diagram.