Do ALL 20 pin PIC MCU's have the same power supply pins?

[djsb]

I'm just wondering if ALL PIC microcontrollers in the 20 pin DIP package have the same power supply pins? Anyone know? Thanks.

[hans]

No.

E.g. compare a classic PIC16F628 in SSOP-20 to a PIC24FV32KA302 in SSOP-20. Not the same.
And then a PIC16F1509 is different again.

[Ian.M]

PIC16F628 in DIP is 18 pin, not 20 pin.  However Microchip chose not to do a SOIC-18, but instead doubled up the centrally located power and ground pins and put it in the SOIC-20 package.

[hexreader]

I'm just wondering if ALL PIC microcontrollers in the 20 pin DIP package have the same power supply pins?

I would say that this is probably true for PIC16 and PIC18

Cannot be 100% sure, but I know of no exception.

Don't know whether any PIC12 comes in 20 pin DIP package. If there is one, then it would probably match pic16/18

PIC24 and PIC33 have very different power pins

(side note: Most, possibly all, PIC12F/16F/18F processors in DIP8 and DIP14 packages are compatible with a 20 pin DIP socket - be sure pin 1 of PIC always matches socket pin 1)

EDIT: Probably should have specified PIC16F and PIC18F above. Forgot that C versions used to exist until jpanhalt reminded me in following post.

[jpanhalt]

I agree, all 20-pin DIP for PIC16 are likely to be the same, unless you go way back to a 16C62x series, for example.

https://ww1.microchip.com/downloads/aemDocuments/documents/MCU08/ProductDocuments/DataSheets/30235j.pdf

However, since you should have the datasheet for any chip with which you are not familiar, it's easy and important to check.