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ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller PDIP 18 8-Bit 4 MHz I/O number 13



1998 Microchip Technology Inc. DS40143B/E1A-page 1

The PIC16C55X(A) (Rev. A) parts you received con-

form functionally to the PIC16C55X(A) preliminary data

sheet (DS40143B), except for the anomalies described

below.

• Module:

Reset

• Description:

Power-up Timer stays enabled regardless of the

PWRTE setting (bit 3 of conﬁguration word).

• Workaround:

Clear reserved bit 6 of the conﬁguration word to 0

during programming. In the MPLAB™ program-

mer window, this bit is listed as Brown Out Detect.

This will allow PWRTE to function correctly.

FIGURE 7-1: CONFIGURATION WORD

CP1

CP0

CP1

CP0

CP1

CP0

—

Reserved CP1

CP0

PWR

TE WDTE F0SC1 F0SC0

CONFIG Address

bit13 bit0

bit 13-8

CP<1:0>:

Code protection bits

(1)

5-4:

= Code protection off

= Upper half of program memory code protected

= Upper 3/4th of program memory code protected

= All memory is code protected

bit 7:

Unimplemented

: Read as '1'

bit 6:

Reserved:

Do not use

bit 3:

PWR

: Power-up Timer Enable bit

1 = PWRT disabled

0 = PWRT enabled

bit 2:

WDTE

: Watchdog Timer Enable bit

1 = WDT enabled

0 = WDT disabled

bit 1-0:

FOSC1:FOSC0

: Oscillator Selection bits

= RC oscillator

= HS oscillator

= XT oscillator

= LP oscillator

Note 1:

All of the CP1:CP0 pairs have to be given the same value to enable the code protection scheme listed.

Clariﬁcations/Corrections to the Data Sheet:

The PIC16C55X(A) Data Sheet (DS40143B), Table 7-

2, calls out the incorrect crystals for the use with our

PICmicros™. The table updated below lists the stan-

dard parallel cut versions.

Errata Sheet for the PIC16C55X(A) Rev. A Data Sheet

PIC16C55X(A)

Summary of content (5 pages)

PAGE 1
PIC16C55X(A) Errata Sheet for the PIC16C55X(A) Rev. A Data Sheet The PIC16C55X(A) (Rev. A) parts you received conform functionally to the PIC16C55X(A) preliminary data sheet (DS40143B), except for the anomalies described below. • Module: Reset • Description: Power-up Timer stays enabled regardless of the PWRTE setting (bit 3 of configuration word). • Workaround: Clear reserved bit 6 of the configuration word to 0 during programming. In the MPLAB™ programmer window, this bit is listed as Brown Out Detect.
PAGE 2
PIC16C55X(A) TABLE 7-2: CAPACITOR SELECTION FOR CRYSTAL OSCILLATOR (PRELIMINARY) Mode Freq OSC1(C1) OSC2(C2) LP 32 kHz 200 kHz 68 - 100 pF 15 - 30 pF 68 - 100 pF 15 - 30 pF XT 100 kHz 2 MHz 4 MHz 68 - 150 pF 15 - 30 pF 15 - 30 pF 150 - 200 pF 15 - 30 pF 15 - 30 pF HS 8 MHz 10 MHz 20 MHz 15 - 30 pF 15 - 30 pF 15 - 30 pF 15 - 30 pF 15 - 30 pF 15 - 30 pF Higher capacitance increases the stability of the oscillator but also increases the start-up time.
PAGE 3
PIC16C55X(A)  1998 Microchip Technology Inc.
PAGE 4
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 5
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