Is there is big diffrence between 16f628 and 16f628a

[Fragrance]

lc meter 16f628

Hi

I was doing a project from epe called lcf meter I faced a strange problem when I used 16f628a the code does not work as it should but when the same code program in 16f628 it’s work fine with out any problem.

Is there is major change should made with code to work on 16f628 what I did just change the processor during compiling from 16f628 to 16f628a during compile there is no error in any way but code not work looking forward for some good info as microchip no more make 16f628 they are marketing 16f628a

regards
Fragrance

 

[blueroomelectronics]

16f628a project

Almost always a PIC with an A revision may have minor changes, check the errata sheet on Microchips site. Most likely a new programming method so make sure you programmer supports the 16F628A

https://ww1.microchip.com/downloads/en/DeviceDoc/80074c.pdf

 

[manish12]

16f628 vs 16f628a

I was doing a project from epe called lcf meter I faced a strange problem when I used 16f628a the code does not work as it should but when the same code program in 16f628 it’s work fine with out any problem.

i was made it but , using "a" version , but i am not check it complete, but it showes lcf .... epe etc on lcd .

but i notice it was hang , after some time , malfunction .

it means it wasn't work properly ?

 

[blueroomelectronics]

16f628a lc meter

i was made it but , using "a" version , but i am not check it complete, but it showes lcf .... epe etc on lcd .

but i notice it was hang , after some time , malfunction .

it means it wasn't work properly ?

I've made an LC meter using the 16F628A and it works fine.

 

[manish12]

16f628 16f628a

i will reopen it and check it compelety then , report it here.

ok
thank you .

 

[Fragrance]

difference between 16f628 and 16f628a

i was made it but , using "a" version , but i am not check it complete, but it showes lcf .... epe etc on lcd .

but i notice it was hang , after some time , malfunction .

it means it wasn't work properly ?

I've made an LC meter using the 16F628A and it works fine.

DID YOU MADE EPE LCF METER ON 16F628A

 

[manish12]

hef4011bp schemat

yes , i was made it . and it is kept in my store area(not happy with the performs ).

 

[blueroomelectronics]

www,marc.org.au/

Mine works great, if you build it right it's a very accurate LC meter.

 

[pasicr]

pe_lcf_meter_modifications.htm

Please upload sch and hex files for this LC meter,
regards

 

[blueroomelectronics]

16f628a 16f628

Here you go.
**broken link removed**
**broken link removed**

 

[manish12]

16f628 and 16f628a

it is not that what i was made (epe LCF).

but this ckt not showing freq in = ?

 

[blueroomelectronics]

16f628 lc meter

Guess that's why mine works, it's not the EPE version and would have different firmware.

 

[manish12]

16f628 differences between 16f628a

Hi

I was doing a project from epe called lcf meter I faced a strange problem when I used 16f628a the code does not work as it should but when the same code program in 16f628 it’s work fine with out any problem.

what is this ?

ok .

and that force me to make another lc meter(working) for my lab.

thanks blueroomelectronics

 

[manu]

working of hef4011bp

Hi flagrance,

Look at this document from micochip website :
https://ww1.microchip.com/downloads/en/DeviceDoc/40048a.pdf

'hope it will work...

 

[Fragrance]

fdec pic 16f628

Here is the working asm file what i going to do writing new code with these specifications 1uH to 10H and 1pF to 6000uF

regards
Fragrance

 

[manish12]

meter 16f628a

at which h/w this code will be run ?

epe lcf

or else

 

[Fragrance]

16f628 programming specification

at which h/w this code will be run ?

epe lcf

or else

The code will work on schematic post by blueroomelectronics

regards
Fragrance

 

[blueroomelectronics]

difference between 16f628 16f628a

Thanks Fragrance, nice work. Where did you find the floating point .inc?

 

[Fragrance]

difference 16f628 vs 16f628a

Thanks Fragrance, nice work. Where did you find the floating point .inc?

this will found on calibration page also on microchip webpage

regards
Fragrance

 

[manish12]

16f628 vvs 16f628a

what i going to do writing new code with these specifications 1uH to 10H and 1pF to 6000uF

is it complete ?

i am waiting for it .