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PIC18F4585 Datasheet(PDF) 1 Page - Microchip Technology |
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PIC18F4585 Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 14 page  © 2007 Microchip Technology Inc. DS80202G-page 1 PIC18F2585/2680/4585/4680 The PIC18F2585/2680/4585/4680 Rev. A1 parts you have received conform functionally to the Device Data Sheet (DS39625C), except for the anomalies described below. Any Data Sheet Clarification issues related to the PIC18F2585/2680/4585/4680 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 PIC18F2585/2680/4585/4680 silicon. The following silicon errata apply only to PIC18F2585/2680/4585/4680 devices with these Device/Revision IDs: 1. Module: ECCP When monitoring a shutdown condition using a bit test on the ECCPASE bit (ECCP1AS<7>) or performing a bit operation on the ECCPASE bit, the device may produce unexpected results. Work around Before performing a bit test or bit operation on the ECCPASE bit, copy the ECCP1AS register to the working register and perform the test or operation there. By avoiding these operations on the ECCPASE bit in the ECCP1AS register, the module will operate normally. In Example 1, ECCPASE bit operations are performed on the W register. EXAMPLE 1: Date Codes that pertain to this issue: All engineering and production devices. 2. Module: ECCP When a shutdown condition occurs, the output port is made inactive for the duration of the event. After the event that caused the shutdown ends, the ECCP module immediately enables the PWM out- put and does not wait until the beginning of the next PWM cycle. Work around Disable the auto-restart feature in software, poll the Timer2 Interrupt Flag (TMR2IF) and do not clear the ECCPASE bit until TMR2IF is set. Date Codes that pertain to this issue: All engineering and production devices. 3. Module: ECCP ECCP1, configured for auto-shutdown with Comparator 1, corrupts the PWM duty cycle pulse. In addition, it does not consistently synchronize the pulse to the beginning of the period, and the end of the pulse can occur at any time within the period. Work around None. Date Codes that pertain to this issue: All engineering and production devices. 4. Module: ECCP The auto-shutdown event will cause the ECCP pins (P1A, P1B, P1C, P1D) to draw higher current than expected. This occurs when the ECCPAS1 or ECCPAS0 bits are set and an auto-shutdown event occurs. Work around None. Date Codes that pertain to this issue: All engineering and production devices. Part Number Device ID Revision ID PIC18F2585 0001 1010 100 0 0010 PIC18F2680 0001 1010 110 0 0010 PIC18F4585 0001 1010 101 0 0010 PIC18F4680 0001 1010 111 0 0010 The Device IDs (DEVID1 and DEVID2) are located at addresses 3FFFFEh:3FFFFFh in the device’s configuration space. They are shown in binary in the format “DEVID2 DEVID1”. MOVF ECCP1AS, W BTFSC WREG, ECCPASE BRA SHUTDOWN_ROUTINE PIC18F2585/2680/4585/4680 Rev. A1 Silicon Errata |
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