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PIC16C63A



1999 Microchip Technology Inc. DS80015B-page 1

The PIC16C63A (Rev. A) parts you have received con-

form functionally to the Device Data Sheet (DS30605A),

except for the anomalies described below.

All the problems listed here will be addressed in future

revisions of the PIC16C63A silicon.

1. Module: RESET

The minimum specification for the MCLR

must be

met in order to RESET the PIC16CXXX. If a MCLR

pulse occurs that is less that the minimum specifica-

tion (parameter #30), improper device operation can

occur.

If the minimum specification cannot be met, then an

external circuit must be used to insure that any pulse

width less than the specification will be filtered before

it reaches the MCLR

pin.

Work Around

A possible circuit is shown in Figure 1. Proper design

validation needs to be done to ensure desired oper-

ation over the applications operating conditions

FIGURE 1: MCLR EXTERNAL CIRCUIT

MCLR

PIC16CXXX

4.7KΩ ≤ R1 ≤ 10KΩ

0.01µF ≤ C1 ≤ 0.1µF

R2 = 100Ω

PIC16C63A Rev. A Silicon Errata Sheet

Note: As with any windowed EPROM device, please cover the window at all times, except when erasing.

Summary of content (7 pages)

PAGE 1
PIC16C63A PIC16C63A Rev. A Silicon Errata Sheet The PIC16C63A (Rev. A) parts you have received conform functionally to the Device Data Sheet (DS30605A), except for the anomalies described below. FIGURE 1: MCLR EXTERNAL CIRCUIT VDD All the problems listed here will be addressed in future revisions of the PIC16C63A silicon. 1. Module: RESET The minimum specification for the MCLR must be met in order to RESET the PIC16CXXX.
PAGE 2
PIC16C63A 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 crystal after the event that causes the device to wake up from sleep mode (as specified in device data sheet). The startup time (TOST) may not occur.
PAGE 3
PIC16C63A 3. Module: TMR1 When operating in external clock mode (TMR1CS is set), reading either of the timer 1 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: • When a read operation of the TMR1H register occurs, the TMR1L register may not increment. • When a read operation of the TMR1L register occurs, the TMR1H register may not increment.
PAGE 4
PIC16C63A Clarifications/Corrections to the Data Sheet: In the Device Data Sheet (DS30605A), the following clarifications and corrections should be noted: 1. Figure 3 and Figure 4 are additions to the data sheet to show the area of operation. These figures replace the Cross Reference of Device Specs for Oscillator Modes Table in the Electrical Specification section. Figure 4 shows the voltage vs. frequency operation for the PIC16LCXXX devices.
PAGE 5
PIC16C63A Figure 3: PIC16CXXX Voltage-Frequency Graph 6.0 V 5.5 V 5.0 V Voltage 4.5 V 4.0 V 3.5 V 3.0 V 2.5 V 2.0 V 0V 0 MHz 20 MHz 4 MHz Frequency Note 1: The shaded region indicates the permissible combinations of voltage and frequency. Figure 4: PIC16LCXXX Voltage-Frequency Graph 6.0 V 5.5 V 5.0 V Voltage 4.5 V 4.0 V 3.5 V 3.0 V 2.5 V 2.0 V 0V 0 MHz 4 MHz 10 MHz Frequency FMAX = 12 MHz/V (VDDAPPMIN - 2.
PAGE 6
Note the following details of the code protection feature on PICmicro® MCUs. • • • • • • The PICmicro family meets the specifications contained in the Microchip Data Sheet. Microchip believes that its family of PICmicro microcontrollers is one of the most secure products 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 7
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