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 MPLABTM programmer window, this bit is listed as Brown Out Detect. This will allow PWRTE to function correctly. FIGURE 7-1: CP1 CP01 Clarifications/Corrections to the Data Sheet: The PIC16C55X(A) Data Sheet (DS40143B), Table 72, calls out the incorrect crystals for the use with our PICmicrosTM. The table updated below lists the standard parallel cut versions. CONFIGURATION WORD CP1 CP01 CP1 CP01 -- Reserved CP1 bit13 CP01 PWRTE WDTE F0SC1 F0SC0 bit0 bit 13-8 5-4: CP<1:0>: Code protection bits(1) bit 7: Unimplemented: Read as '1' bit 6: Reserved: Do not use bit 3: PWRTE: 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 11 = RC oscillator 10 = HS oscillator 01 = XT oscillator 00 = LP oscillator CONFIG Address REGISTER: 2007h 11 = Code protection off 10 = Upper half of program memory code protected 01 = Upper 3/4th of program memory code protected 00 = All memory is code protected Note 1: All of the CP1:CP0 pairs have to be given the same value to enable the code protection scheme listed. 1998 Microchip Technology Inc. DS40143B/E1A-page 1 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. These values are for design guidance only. Rs may be required in HS mode as well as XT mode to avoid overdriving crystals with low drive level specification. Since each crystal has its own characteristics, the user should consult the crystal manufacturer for appropriate values of external components. Crystals to be Characterized: 32.768 kHz 100 kHz 200 kHz 4.0 MHz 20.0 MHz DS40143B/E1A-page 2 Epson C-001R32.768K-A Epson C-2 100.00 KC-P STD XTL 200.000 kHz ECS ECS-40-20-4 ECS ECS-200-20-4 20 PPM 20 PPM 20 PPM 50 PPM 50 PPM 1998 Microchip Technology Inc. PIC16C55X(A) 1998 Microchip Technology Inc. DS40143B/E1A-page 3 Note the following details of the code protection feature on PICmicro(R) 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. All of these methods, to our knowledge, require using the PICmicro microcontroller in a manner outside the operating specifications contained in the data sheet. The person doing so may be engaged in theft of intellectual property. Microchip is willing to work with the customer who is concerned about the integrity of their code. Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as "unbreakable". Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our product. If you have any further questions about this matter, please contact the local sales office nearest to you. Information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. No representation or warranty is given and no liability is assumed by Microchip Technology Incorporated with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. Use of Microchip's products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, FilterLab, KEELOQ, microID, MPLAB, PIC, PICmicro, PICMASTER, PICSTART, PRO MATE, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. dsPIC, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, microPort, Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM, MXDEV, PICC, PICDEM, PICDEM.net, rfPIC, Select Mode and Total Endurance are trademarks of Microchip Technology Incorporated in the U.S.A. Serialized Quick Turn Programming (SQTP) is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. (c) 2002, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received QS-9000 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona in July 1999. The Company's quality system processes and procedures are QS-9000 compliant for its PICmicro(R) 8-bit MCUs, KEELOQ(R) code hopping devices, Serial EEPROMs and microperipheral products. In addition, Microchip's quality system for the design and manufacture of development systems is ISO 9001 certified. 2002 Microchip Technology Inc. M WORLDWIDE SALES AND SERVICE AMERICAS ASIA/PACIFIC Japan Corporate Office Australia 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: 480-792-7627 Web Address: http://www.microchip.com Microchip Technology Australia Pty Ltd Suite 22, 41 Rawson Street Epping 2121, NSW Australia Tel: 61-2-9868-6733 Fax: 61-2-9868-6755 Microchip Technology Japan K.K. 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