The PIC16C642 (Rev. A) parts you have received con-
form functionally to the Device Data Sheet (DS30559
A
),
except for the anomalies described below.
All the problems listed here will be addressed in future
revisions of the PIC16C642 silicon. PIC16C642
PIC16C642 Rev. A Silicon Errata Sheet
The PIC16C642 (Rev. A) parts you have received con-
form functionally to the Device Data Sheet (DS30559A),
except for the anomalies described below.
All the problems listed here will be addressed in future
revisions of the PIC16C642 silicon.
1. Module: Timer0
The TMR0 register may increment when the WDT
postscaler is switched to the Timer0 prescaler. If
TMR0 = FFh, this will cause TMR0 to overow (set-
ting T0IF).
Work Around
Follow the following sequence:
a) Read the 8-bit TMR0 register into the W register
b) Clear the TMR0 register
c) Assign WDT postscaler to Timer0
d) Write W register to TMR0
2. ……
