Information

 2011-2013 Microchip Technology Inc. DS80000531E-page 7
PIC32MX1XX/2XX
14. Module: Non-5V Tolerant Pins
When internal pull-ups are enabled on non-5V
tolerant pins, the level as measured on the pin and
available to external device inputs may not exceed
the minimum value of V
IH, and therefore qualify as
a logic “high”. However, with respect to the PIC32
device, as long as V
DD  3V and the load does not
exceed -50 µA, the internal pull-ups are
guaranteed to be recognized as a logic “high”
internally to the device.
Work around
It is recommend to only use external pull-ups:
• To guarantee a logic “high” for external logic
input circuits outside of the PIC32 device
• For PIC32 device inputs, if the external load
exceeds -50 µA or V
DD < 3V
Affected Silicon Revisions
15. Module: 5V Tolerant Pins
When internal pull-ups are enabled on 5V tolerant
pins, the level as measured on the pin and
available to external device inputs may not exceed
the minimum value of V
IH, and therefore qualify as
a logic “high”. However, with respect to the PIC32
device, as long as V
DD  3V and the load does not
exceed -50 µA, the internal pull-ups are
guaranteed to be recognized as a logic “high”
internally to the device.
Work around
It is recommend to only use external pull-ups:
• To guarantee a logic “high” for external logic
input circuits outside of the PIC32 device
• For PIC32 device inputs, if the external load
exceeds -50 µA or V
DD < 3V
Affected Silicon Revisions
Device Flash
Memory (KB)
Device Silicon Revision
A0 A1
16/32
XX
64/128
XX
Device Flash
Memory (KB)
Device Silicon Revision
A0 A1
16/32
XX
64/128
XX