Information

© 2008 Microchip Technology Inc. DS80413A-page 1
PIC16F87X
The PIC16F87X family (Rev. B8) parts you have
received conform functionally to the Device Data Sheet
(DS30292C), except for the anomalies described
below. Any Data Sheet Clarification issues related to the
PIC16F87X family will be reported in a separate Data
Sheet errata. Please check the Microchip web site for
any existing issues.
This errata applies to the PIC16F873 production
version and all other production versions of the
PIC16F87X family with the following Device/Revision
IDs:
1. Module: TMR1
When operating in External Clock mode (TMR1CS
is set), reading either of the Timer1 registers
(TMR1H or TMR1L) may cause the timer not to
increment as expected. This occurs for both
synchronous and asynchronous inputs.
The scenarios which display this are:
a) When a read operation of the TMR1H
register occurs, the TMR1L register may not
increment.
b) When a read operation of the TMR1L regis-
ter occurs, the TMR1H register may not
increment. This improper operation is only
an issue when the TMR1L register
increments from FFh to 00h (FFh 00h)
during the read of the TMR1L register.
Work around
Do not read either the TMR1H or the TMR1L
registers when operating in External Clock mode
(TMR1CS is set). If the application needs to read
the 16-bit counter, evaluate if this function can be
moved to the TMR0, or one of the other timer
resources on the device.
2. Module: Capture/Compare/PWM Modules
While changing the mode of the module, when
CCPxCON is loaded with 0x08, the CCPx pin is
not pulled LOW as expected.
Work around
When changing the mode of the module, reset the
CCP module (CCPxCON = 0x00) and load the
new mode (CCPxCON = 0x08).
Part Number Device ID Revision ID
PIC16F873 0000 1001 011 0 0110
The Device IDs (DEVID and REVID) are located at
the last two implemented addresses in program
memory. They are shown in hexadecimal in the for-
mat “DEVID REVID”.
Note: x = 1 or 2 (either CCP1 or CCP2).
PIC16F87X Family Rev. B8 Silicon Errata

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