Microchip обявиха официално PIC32MZ на сайта...

USB Hi-Speed mode does not function (Device or Host).

Work around:
As an alternative, use Full-Speed mode.

If the EEPROM is programmed, both the Flash memory and
EEPROM will be unable to be programmed after a POR
Description:
Due to a factory configuration error, if the EEPROM has been programmed and then a POR is
executed, both the Flash memory and EEPROM will be unable to be programmed. Do not use the
EEPROM on RevB0 devices.
Workaround:
None.

EEPROM blocks must be accessed in alternate pairs to avoid
corruption of data
Description:
When the words in a pair of EEPROM blocks are repetitively written, the words of the next pair of
blocks get corrupted. In a given group of four blocks of EEPROM, for example, 0, 1, 2 and 3, repeated
writes to either block 0 or block 1 cause the data in blocks 2 and 3 to be corrupted.
Workaround:
The EEPROM should be used only in alternate pairs of blocks 0,1,4,5,8,9, and so on, or 2,3,6,7,10,11,
and so on.

When a 1-kB Flash page is erased, the adjacent page is also erased
Description:
When a 1-kB Flash page is erased, the adjacent page in the even/odd pair is also erased. For
example, if page 0 is erased, then page 1 is also erased. Similarly, if page 1 is erased, then page
0 is also erased.
Workaround:
None.

1. Module: Core
Certain code sequence and placement may cause
the corruption of a few bits in the instruction fetch
when the part is used above 4 MHz. A corrupted
instruction fetch will cause the part to execute an
improper instruction and result in unpredictable
outputs.
Microchip cannot predict which code sequences
and placement will cause this failure. If this failure
mechanism exists in your system, it should be
evident during statistically significant preproduction
testing (minimum suggested sample
size: 100 units) of your particular code sequence
and placement.
Any code changes should be tested in the same
manner prior to their implementation. If most parts
fail your tests, or if failures are seen at all voltages
or at all frequencies, this indicates that the problem
experienced does not relate to this failure
mechanism.
This problem has not been observed at operating
frequencies below 4 MHz.
Work around
Use the part at or below 4 MHz.

Module: Reset
It has been observed that in certain Reset conditions,
including power-up, the first GOTO instruction
at address 0x0000 may not be executed. This
occurrence is rare and affects very few applications.
To determine if your system is affected, test a
statistically significant number of applications across
the operating temperature, voltage and frequency
ranges of the application. Affected systems will
repeatably fail normal testing. Systems not affected
will continue to not be affected over time.
Work around
Insert a NOP instruction at address 0x0000.
Date Codes that pertain to this issue:
All engineering and production devices.

Явно не си чел много Errata-ти.

Дедо,
то всичко дето се прави за масс продъксшън е на wafer level csp" (за мобилните дивайси и всички малки такива) демек пасивират силикона, слагат топчета и това е.
няма корпуси.

Ревижъна е A3. Вярно че се брои първи, ама явно са борили доста нещица още преди да го пуснат.

PIC32 няма проблeм с I2C и референса на компаратора. Не помня и да съм имал грижи със SPI-то.