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PIC18F2682/2685/4682/4685

The PIC18F2682/2685/4682/4685 Rev. A1 parts you

have received conform functionally to the Device Data

Sheet (DS39761B), except for the anomalies

described below. Any Data Sheet Clarification issues

related to the PIC18F2682/2685/4682/4685 will be

reported in a separate Data Sheet errata. Please check

the Microchip web site for any existing issues.

All of the issues listed here will be addressed in future

revisions of the PIC18F2682/2685/4682/4685 silicon.

The following silicon errata apply only to

PIC18F2682/2685/4682/4685 devices with these

Device/Revision IDs:

1. Module: ECAN™ Technology

Following an error on the bus, the ECAN module is

unable to switch from Listen Only mode directly to

Configuration mode.

Work around

Use the REQOP (CANCON<7:5>) bits to select

Normal mode as an intermediate step, when

switching from Listen Only mode to Configuration

mode.

Date Codes that pertain to this issue:

All engineering and production devices.

Part Number Device ID Revision ID

PIC18F2682 10 0111 000 00001

PIC18F2685 10 0111 001 00001

PIC18F4682 10 0111 010 00001

PIC18F4685 10 0111 011 00001

The Device IDs (DEVID1 and DEVID2) are located at

addresses 3FFFFEh:3FFFFFh in the device’s

configuration space. They are shown in hexadecimal

in the format “DEVID2 DEVID1”.

PIC18F2682/2685/4682/4685 Rev. A1 Silicon Errata

Summary of content (6 pages)

PAGE 1
PIC18F2682/2685/4682/4685 PIC18F2682/2685/4682/4685 Rev. A1 Silicon Errata The PIC18F2682/2685/4682/4685 Rev. A1 parts you have received conform functionally to the Device Data Sheet (DS39761B), except for the anomalies described below. Any Data Sheet Clarification issues related to the PIC18F2682/2685/4682/4685 will be reported in a separate Data Sheet errata. Please check the Microchip web site for any existing issues.
PAGE 2
PIC18F2682/2685/4682/4685 2. Module: ECAN™ Technology Work around Under specific conditions, the TXBxSIDH register of the pending message for transmission may be corrupted. The following conditions must exist for this event to occur: Ensure that a receive buffer overflow condition does not occur, and/or ensure that a transmit request is not pending, if a received buffer overflow condition does exist. 1. A transmit message must be pending. 2.
PAGE 3
PIC18F2682/2685/4682/4685 4. Module: 10-Bit Analog-to-Digital Converter When the AD clock source is selected as 2 TOSC or RC (when ADCS2:ADCS0 = 000 or x11), in extremely rare cases, the EIL (Integral Linearity Error) and EDL (Differential Linearity Error) may exceed the data sheet specification at codes 511 and 512 only. Work around Select the AD clock source as 4 TOSC, 8 TOSC, 16 TOSC, 32 TOSC or 64 TOSC and avoid selecting 2 TOSC or RC.
PAGE 4
PIC18F2682/2685/4682/4685 REVISION HISTORY Rev A Document (8/2006) First revision of this document which includes silicon issues 1-2 (ECAN). Rev B Document (12/2006) Updated silicon issues 1-2 (ECAN™ Technology). Rev C Document (2/2007) Corrected code comment in Example 1 for silicon issue 2 (ECAN™ Technology). Rev D Document (4/2007) Added silicon issue 3 (Timer1 and Timer3). Rev E Document (5/2007) Added silicon issue 4 Converter).
PAGE 5
Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature.
PAGE 6
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