[PIC] Errata of PIC32MZ EF FAMILY

[Electron]

Hi!
on the errata of the PIC32MZ EF FAMILY for the A1 revision I can read:

2. Module: Oscillator
Revision A1 Silicon:
A crystal oscillator cannot be used as an input to the Primary Oscillator
(POSC) pins OSC1 and OSC2.
Revision A1 Silicon Work around:
Use an external clock or the Internal FRC Oscillator.

Is it right to understand that in A1 revisions a Xtal cannot be used?

This is a serious and unexpected bug, no doubt. I have plenty of A1's.. :-(

Cheers (not really),
Mario

[r***@bredband.net]

A bit of confusing text but I interpret it as the internal oscillator
circuit for an external crystal does not work. An external crystal
oscillator circuit must be used in order to use a crystal. So a crystal
resonator alone can't be used (2 pins) but a crystal oscillator (4 pins)
can.

/Ruben

Post by Electron
Hi!
2. Module: Oscillator
A crystal oscillator cannot be used as an input to the Primary Oscillator
(POSC) pins OSC1 and OSC2.
Use an external clock or the Internal FRC Oscillator.
Is it right to understand that in A1 revisions a Xtal cannot be used?
This is a serious and unexpected bug, no doubt. I have plenty of A1's.. :-(
Cheers (not really),
Mario

[Jan-Erik Söderholm]

Yes, I do not understand why they added that "oscillator" word to
"A crystal oscillator cannot be used as an input to the Primary Oscillator"

It would have been clearer to just write:

" A crystal cannot be used with the Primary Oscillator" or such.

Jan-Erik.


-----Ursprungligt meddelande-----
Från: piclist-***@mit.edu [mailto:piclist-***@mit.edu] För
***@bredband.net
Skickat: den 20 augusti 2017 12:07
Till: Microcontroller discussion list - Public. <***@mit.edu>
Ämne: Re: [PIC] Errata of PIC32MZ EF FAMILY

A bit of confusing text but I interpret it as the internal oscillator
circuit for an external crystal does not work. An external crystal
oscillator circuit must be used in order to use a crystal. So a crystal
resonator alone can't be used (2 pins) but a crystal oscillator (4 pins)
can.

/Ruben

Post by Electron
Hi!
2. Module: Oscillator
A crystal oscillator cannot be used as an input to the Primary
Oscillator
(POSC) pins OSC1 and OSC2.
Use an external clock or the Internal FRC Oscillator.
Is it right to understand that in A1 revisions a Xtal cannot be used?
This is a serious and unexpected bug, no doubt. I have plenty of A1's.. :-(
Cheers (not really),
Mario

--
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change
your membership options at http://mailman.mit.edu/mailman/listinfo/piclist

[Electron]

Post by r***@bredband.net
A bit of confusing text but I interpret it as the internal oscillator
circuit for an external crystal does not work. An external crystal
oscillator circuit must be used in order to use a crystal. So a crystal
resonator alone can't be used (2 pins) but a crystal oscillator (4 pins)
can.

Well, yes, but this means to re-do the PCB's.. or to throw the A1's and
buy new A3's.

Quite disappointing really. I accept the fact that IC's can have bugs, but
here I think they were a bit too far. Also the UART of the new PIC32MK is
nearly unusable due to bugs.. too many bugs, some uncorrectable via software.

Post by r***@bredband.net
/Ruben

Post by Electron
Hi!
2. Module: Oscillator
A crystal oscillator cannot be used as an input to the Primary Oscillator
(POSC) pins OSC1 and OSC2.
Use an external clock or the Internal FRC Oscillator.
Is it right to understand that in A1 revisions a Xtal cannot be used?
This is a serious and unexpected bug, no doubt. I have plenty of A1's.. :-(
Cheers (not really),
Mario

--
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

[r***@bredband.net]

Is it possible or practical to make a piggyback board that connects to
the oscillator input (at one crystal pin) and takes VDD and GND from
somewhere else close by?

/Ruben

Post by Electron

Post by r***@bredband.net
A bit of confusing text but I interpret it as the internal oscillator
circuit for an external crystal does not work. An external crystal
oscillator circuit must be used in order to use a crystal. So a crystal
resonator alone can't be used (2 pins) but a crystal oscillator (4 pins)
can.

Well, yes, but this means to re-do the PCB's.. or to throw the A1's and
buy new A3's.
Quite disappointing really. I accept the fact that IC's can have bugs, but
here I think they were a bit too far. Also the UART of the new PIC32MK is
nearly unusable due to bugs.. too many bugs, some uncorrectable via software.

Post by r***@bredband.net
/Ruben

Post by Electron
Hi!
2. Module: Oscillator
A crystal oscillator cannot be used as an input to the Primary Oscillator
(POSC) pins OSC1 and OSC2.
Use an external clock or the Internal FRC Oscillator.
Is it right to understand that in A1 revisions a Xtal cannot be used?
This is a serious and unexpected bug, no doubt. I have plenty of A1's.. :-(
Cheers (not really),
Mario

--
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

[a***@stfc.ac.uk]

Quite disappointing really. I accept the fact that IC's can have bugs, but here I
think they were a bit too far. Also the UART of the new PIC32MK is nearly
unusable due to bugs.. too many bugs, some uncorrectable via software.

I really cannot understand how they let these through - surely the peripherals are built on previous VHDL (or whatever hard ware description language they use0 that has served them well through all the early 16F etc. chips where these peripherals work? I can understand that they may need some tweaking to handle smaller geometry processes, but I can't understand how they bring out a new chip with peripherals that are so full of bugs as to be unusable.

[Allen Mulvey]

I would read it that you cannot use an external crystal
oscillator as the primary oscillator. In any event I would
get out a breadboard and try the internal oscillator with a
crystal.

Allen

-----Original Message-----
Sent: Sunday, August 20, 2017 5:33 AM
To: Microcontroller discussion list - Public.
Subject: [PIC] Errata of PIC32MZ EF FAMILY
Hi!
on the errata of the PIC32MZ EF FAMILY for the A1 revision

I

2. Module: Oscillator
A crystal oscillator cannot be used as an input to the

Primary

Oscillator
(POSC) pins OSC1 and OSC2.
Use an external clock or the Internal FRC Oscillator.
Is it right to understand that in A1 revisions a Xtal

cannot be

used?
This is a serious and unexpected bug, no doubt. I have

plenty

of A1's.. :-(
Cheers (not really),
Mario
--
http://www.piclist.com/techref/piclist PIC/SX FAQ & list
archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

[Jan-Erik Söderholm]

Hi.

If you use an external crystal *oscillator*, it will comply with the term
"external clock" which according to the errata *will* work.

The errata is also referring to the feature "Primary Oscillator Crystal".

It also says that rev A3 *does* work with a crystal and there is also
the normal crystal-with-two-caps circuit as an example for A3.

Jan-Erik.


-----Ursprungligt meddelande-----
Från: piclist-***@mit.edu [mailto:piclist-***@mit.edu] För Allen
Mulvey
Skickat: den 20 augusti 2017 13:31
Till: 'Microcontroller discussion list - Public.' <***@mit.edu>
Ämne: RE: [PIC] Errata of PIC32MZ EF FAMILY

I would read it that you cannot use an external crystal oscillator as the
primary oscillator. In any event I would get out a breadboard and try the
internal oscillator with a crystal.

Allen

-----Original Message-----
Behalf Of Electron
Sent: Sunday, August 20, 2017 5:33 AM
To: Microcontroller discussion list - Public.
Subject: [PIC] Errata of PIC32MZ EF FAMILY
Hi!
on the errata of the PIC32MZ EF FAMILY for the A1 revision

I

2. Module: Oscillator
A crystal oscillator cannot be used as an input to the

Primary

Oscillator
(POSC) pins OSC1 and OSC2.
Use an external clock or the Internal FRC Oscillator.
Is it right to understand that in A1 revisions a Xtal

cannot be

used?
This is a serious and unexpected bug, no doubt. I have

plenty

of A1's.. :-(
Cheers (not really),
Mario
--
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

--
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change
your membership options at http://mailman.mit.edu/mailman/listinfo/piclist

[Jim Ruxton]

Hi, This is a real bummer. Curious if you asked Microchip if they would
swap your A1 parts for A3 parts?

Jim

Post by Jan-Erik Söderholm
Hi.
If you use an external crystal *oscillator*, it will comply with the term
"external clock" which according to the errata *will* work.
The errata is also referring to the feature "Primary Oscillator Crystal".
It also says that rev A3 *does* work with a crystal and there is also
the normal crystal-with-two-caps circuit as an example for A3.
Jan-Erik.
-----Ursprungligt meddelande-----
Mulvey
Skickat: den 20 augusti 2017 13:31
Ämne: RE: [PIC] Errata of PIC32MZ EF FAMILY
I would read it that you cannot use an external crystal oscillator as the
primary oscillator. In any event I would get out a breadboard and try the
internal oscillator with a crystal.
Allen

-----Original Message-----
Behalf Of Electron
Sent: Sunday, August 20, 2017 5:33 AM
To: Microcontroller discussion list - Public.
Subject: [PIC] Errata of PIC32MZ EF FAMILY
Hi!
on the errata of the PIC32MZ EF FAMILY for the A1 revision

I

2. Module: Oscillator
A crystal oscillator cannot be used as an input to the

Primary

Oscillator
(POSC) pins OSC1 and OSC2.
Use an external clock or the Internal FRC Oscillator.
Is it right to understand that in A1 revisions a Xtal

cannot be

used?
This is a serious and unexpected bug, no doubt. I have

plenty

of A1's.. :-(
Cheers (not really),
Mario
--
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

--
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change
your membership options at http://mailman.mit.edu/mailman/listinfo/piclist

[RussellMc]

Post by Jim Ruxton
Hi, This is a real bummer. Curious if you asked Microchip if they would
swap your A1 parts for A3 parts?

​Not fit for intended purpose :-(​
ie this is the most common mode of use and is a *FAULT* with which it
should not leave the test line let alone the factory.

Q: What sort of test regime or supply philosopy allows such an IC to ever
be acceptable?
A: An all too common one in some quarters, but one that you'd hope and
expect would never ever ever never ... be acceptable to Microchip.

The IC is nor errated, it's eviscerated.

How long has the A1 part been 'out'?

One could make (up) an (only sometimes) amusing list of things for which
the IC's xxx was not fit for use as an xxx.



Russell

[Electron]

The funny thing is that the datasheets of their many MPU's that I visited
all list in the top page features like VBat or temperature sensor which have
never worked during the years and many devices out. :D

So, if one is so imprudent to not read the errata (or new to this kind of
wisedom), he may assume, by downloading the latest datasheet versions, that
those features are real.

But they ain't.

Still, I love Microchip and their products, but that's another story.

Chers,
Mario

Post by RussellMc

Post by Jim Ruxton
Hi, This is a real bummer. Curious if you asked Microchip if they would
swap your A1 parts for A3 parts?

​Not fit for intended purpose :-(​
ie this is the most common mode of use and is a *FAULT* with which it
should not leave the test line let alone the factory.
Q: What sort of test regime or supply philosopy allows such an IC to ever
be acceptable?
A: An all too common one in some quarters, but one that you'd hope and
expect would never ever ever never ... be acceptable to Microchip.
The IC is nor errated, it's eviscerated.
How long has the A1 part been 'out'?
One could make (up) an (only sometimes) amusing list of things for which
the IC's xxx was not fit for use as an xxx.
Russell
--
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

[Isaac M. Bavaresco]

That's Microchip, bugs that live long and prosper.

For new devices I always download the Errata together with the datasheet.

Did anyone notice that the PIC32 EC was silently buried? It had so many
more bugs than the EF, and more serious.


I designed and use a clock circuit for the PIC32 EF that uses a 4-pin
crystal oscillator (3.2 mm x 2.5 mm) whose package is also available as
simple quartz crystals. With some optional resistors I can use the same
board with both devices.


Cheers,

Isaac

Post by Electron
The funny thing is that the datasheets of their many MPU's that I visited
all list in the top page features like VBat or temperature sensor which have
never worked during the years and many devices out. :D
So, if one is so imprudent to not read the errata (or new to this kind of
wisedom), he may assume, by downloading the latest datasheet versions, that
those features are real.
But they ain't.
Still, I love Microchip and their products, but that's another story.
Chers,
Mario

Post by Jim Ruxton
Hi, This is a real bummer. Curious if you asked Microchip if they would
swap your A1 parts for A3 parts?

​Not fit for intended purpose :-(​
ie this is the most common mode of use and is a *FAULT* with which it
should not leave the test line let alone the factory.
Q: What sort of test regime or supply philosopy allows such an IC to ever
be acceptable?
A: An all too common one in some quarters, but one that you'd hope and
expect would never ever ever never ... be acceptable to Microchip.
The IC is nor errated, it's eviscerated.
How long has the A1 part been 'out'?
One could make (up) an (only sometimes) amusing list of things for which
the IC's xxx was not fit for use as an xxx.
Russell
--
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

---
Este email foi escaneado pelo Avast antivírus.
https://www.avast.com/antivirus

[Forrest Christian (List Account)]

Be careful.. I don't remember the crystal specs for A3, but on at least
one rev of the pic32mz It needs a crystal with very low drive current.

They seem to be having difficulty getting enough drive current out of the
process they use for the mz.

On Aug 20, 2017 5:47 AM, "Jan-Erik Söderholm" <jan-***@telia.com>
wrote:

Hi.

If you use an external crystal *oscillator*, it will comply with the term
"external clock" which according to the errata *will* work.

The errata is also referring to the feature "Primary Oscillator Crystal".

It also says that rev A3 *does* work with a crystal and there is also
the normal crystal-with-two-caps circuit as an example for A3.

Jan-Erik.


-----Ursprungligt meddelande-----
Från: piclist-***@mit.edu [mailto:piclist-***@mit.edu] För Allen
Mulvey
Skickat: den 20 augusti 2017 13:31
Till: 'Microcontroller discussion list - Public.' <***@mit.edu>
Ämne: RE: [PIC] Errata of PIC32MZ EF FAMILY

I would read it that you cannot use an external crystal oscillator as the
primary oscillator. In any event I would get out a breadboard and try the
internal oscillator with a crystal.

Allen

-----Original Message-----
Behalf Of Electron
Sent: Sunday, August 20, 2017 5:33 AM
To: Microcontroller discussion list - Public.
Subject: [PIC] Errata of PIC32MZ EF FAMILY
Hi!
on the errata of the PIC32MZ EF FAMILY for the A1 revision

I

2. Module: Oscillator
A crystal oscillator cannot be used as an input to the

Primary

Oscillator
(POSC) pins OSC1 and OSC2.
Use an external clock or the Internal FRC Oscillator.
Is it right to understand that in A1 revisions a Xtal

cannot be

used?
This is a serious and unexpected bug, no doubt. I have

plenty

of A1's.. :-(
Cheers (not really),
Mario
--
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist

--
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change
your membership options at http://mailman.mit.edu/mailman/listinfo/piclist


--
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist