《PIC16C65B》.pdfVIP

PIC16C65B PIC16C65B Rev. A Silicon Errata Sheet The PIC16C65B (Rev. A) parts you have received con- FIGURE 1: MCLR EXTERNAL CIRCUIT form functionally to the Device Data Sheet (DS30605A), except for the anomalies described below. VDD All the problems listed here will be addressed in future revisions of the PIC16C65B silicon. R1 1. Module: RESET R2 The minimum specification for the MCLR must be MCLR met in order to RESET the PIC16CXXX. If a MCLR pulse occurs that is less that the minimum specifica- C1 PIC16CXXX tion (parameter #30), improper device operation can occur. If the minimum specification cannot be met, then an 4.7KΩ ≤ R1 ≤ 10KΩ external circuit must be used to insure that any pulse 0.01µF ≤ C1 ≤ 0.1µF width less than the specification will be filtered before R2 = 100Ω it reaches the MCLR pin. Work Around A possible circuit is shown in Figure 1. Proper design validation needs to be done to ensure desire opera- tion over the applications operating conditions Note: As with any windowed EPROM device, please cover the window at all times, except when erasing.  1999 Microchip Technology Inc. DS80014B PIC16C65B 2. Module: OSCILLATOR The Oscillator Start-up Timer (TOST) delay may not occur when the device wakes-up from sleep. Figure 2 shows the start-up of the c