PIC18F1220/1320 PIC18F1220/1320 Rev. B4 Silicon/Data Sheet Errata The PIC18F1220/1320 Rev. B4 parts you have received conform functionally to the Device Data Sheet (DS39605C), except for the anomalies described below. All of the issues listed here will be addressed in future revisions of the PIC18F1220/1320 silicon. The following silicon errata apply only to PIC18F1220/1320 devices with these Device/ Revision IDs: 2. Module: EUSART The auto-baud measurement may not determine the correct baud rate if the ABDEN bit is set while the RB4/RX pin is low. Work around If the wake-up function is being used (WUE is set), wait for the RB4/RX pin to go high following a Break signal before setting the ABDEN bit. Part Number Device ID Revision ID PIC18F1220 00 0111 111 00100 If the wake-up function is not being used, ensure that RB4/RX is Idle (high between bytes) before setting the ABDEN bit. PIC18F1320 00 0111 110 00100 Date Codes that pertain to this issue: The Device IDs (DEVID1 and DEVID2) are located at addresses 3FFFFEh:3FFFFFh in the device’s configuration space. They are shown in hexadecimal in the format “DEVID2 DEVID1”. 1. Module: Core (DAW Instruction) The DAW instruction may improperly clear the Carry bit (STATUS<0>) when executed. All engineering and production devices. 3. Module: Data EEPROM When writing to the data EEPROM, the contents of the data EEPROM memory may not be written as expected. Work around Work around Either of two work arounds can be used: Test the Carry bit state before executing the DAW instruction. If the Carry bit is set, increment the next higher byte to be added, using an instruction such as INCFSZ (this instruction does not affect any Status flags and will not overflow a BCD nibble). After the DAW instruction has been executed, process the Carry bit normally (see Example 1). 1. Before beginning any writes to the data EEPROM, enable the LVD (any voltage) and wait for the internal voltage reference to become stable. LVD interrupt requests may be ignored. Once the LVD voltage reference is stable, perform all EEPROM writes normally. When writes have been completed, the LVD may be disabled. 2. Configure the BOR as enabled (any voltage). Select a threshold below VDD to allow normal operation. If VDD is below the BOR threshold, the device will be held in Brown-out Reset. EXAMPLE 1: PROCESSING THE CARRY BIT DURING BCD ADDITIONS MOVLW ADDLW 0x80 0x80 ; .80 (BCD) ; .80 (BCD) BTFSC INCFSZ DAW BTFSC INCFSZ STATUS, C byte2 ; test C ; inc next higher LSB STATUS, C byte2 ; test C ; inc next higher LSB Date Codes that pertain to this issue: All engineering and production devices. This is repeated for each DAW instruction. Date Codes that pertain to this issue: All engineering and production devices. © 2005 Microchip Technology Inc. DS80175E-page 1 PIC18F1220/1320 4. Module: EUSART The auto-baud measurement may not determine the correct baud rate if the resulting measurement could overflow the SPBRG register when measuring slow baud rates. In such cases, SPBRGH:SPBRG will contain 0x00FF. Work around Either or both of the following work arounds may be used: 1. Use a faster baud rate that can not result in auto-baud measurements greater that 0x00FF. 2. Clear the BRGH bit (TXSTA<2>). This divides the bit clock by 64 rather than dividing it by 16. 5. Module: Reset It has been observed that in certain Reset conditions, including power-up, the first GOTO instruction at address 0x0000 may not be executed. This occurrence is rare and affects very few applications. To determine if your system is affected, test a statistically significant number of applications across the operating temperature, voltage and frequency ranges of the application. Affected systems will repeatably fail normal testing. Systems not affected will continue to not be affected over time. Work around Insert a NOP instruction at address 0x0000. Date Codes that pertain to this issue: Date Codes that pertain to this issue: All engineering and production devices. All engineering and production devices. DS80175E-page 2 © 2005 Microchip Technology Inc. PIC18F1220/1320 Clarifications/Corrections to the Data Sheet In the Device Data Sheet (DS39605C), the following clarifications and corrections should be noted. 1. Module: CCP In Section 14.0 “Timer3 Module”, bit 6 of the T3CON register was incorrectly defined as “unimplemented”. The correct definition for T3CON<6> is T3CCP2 and is shown in bold below: REGISTER 14-1: T3CON: TIMER3 CONTROL REGISTER R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 RD16 T3CCP2 T3CKPS1 T3CKPS0 T3CCP1 T3SYNC TMR3CS TMR3ON bit 7 bit 6, 3 bit 0 T3CCP2:T3CCP1: Timer3 and Timer1 to CCP Enable bits 1x = Timer3 is the clock source for compare/capture CCP module 01 = Reserved 00 = Timer1 is the clock source for compare/capture CCP module 2. Module: Data EEPROM Memory In Table 22-1 on page 254 of the Device Data Sheet, the typical value for parameter D122, Data EEPROM Erase/Write Cycle Time (TDEW) has changed. The new value is 5.5 ms and is shown in bold below. TABLE 22-1: MEMORY PROGRAMMING REQUIREMENTS DC CHARACTERISTICS Param No. D122 Sym TDEW Characteristic Erase/Write Cycle Time © 2005 Microchip Technology Inc. Standard Operating Conditions (unless otherwise stated) Operating temperature -40°C ≤ TA ≤ +85°C for industrial Min Typ† Max Units — 5.5 — ms Conditions DS80175E-page 3 PIC18F1220/1320 REVISION HISTORY Rev A Document (12/2003) First revision of this document, silicon issues 1 (Core), 2 (EUSART) and 3 (Data EEPROM) and Data Sheet Clarification issues 1 (Internal RC Accuracy) and 2 (DC Characteristics Table). Rev B Document (2/2004) Added silicon issue 4 (EUSART). Added Data Sheet Clarification issue 3 (Timer1 Oscillator and In-Circuit Serial Programming). Rev C Document (4/2004) Added Data Sheet Clarification issues 4 Characteristics) and 5 (LVD Characteristics). (DC Rev D Document (05/2005) Added silicon issue 5 (Reset) and removed all Data Sheet Clarification issues with the exception of former issue 3 (Timer1 Oscillator and In-Circuit Serial Programming™), now numbered issue 1 and added issue 2 (CCP). Rev E Document (08/2005) Removed Data Sheet Clarification issue 1 and added issue 2 (Data EEPROM Memory). DS80175E-page 4 © 2005 Microchip Technology Inc. Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families 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 Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is 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 products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. 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 Microchip intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, KEELOQ, microID, MPLAB, PIC, PICmicro, PICSTART, PRO MATE, PowerSmart, rfPIC, and SmartShunt are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. AmpLab, FilterLab, Migratable Memory, MXDEV, MXLAB, PICMASTER, SEEVAL, SmartSensor and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, Application Maestro, dsPICDEM, dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, Linear Active Thermistor, MPASM, MPLIB, MPLINK, MPSIM, PICkit, PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel, Total Endurance and WiperLock are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. 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. © 2005, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received ISO/TS-16949:2002 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona and Mountain View, California in October 2003. The Company’s quality system processes and procedures are for its PICmicro® 8-bit MCUs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified. © 2005 Microchip Technology Inc. DS80175E-page 5 WORLDWIDE SALES AND SERVICE AMERICAS ASIA/PACIFIC ASIA/PACIFIC EUROPE Corporate Office 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: http://support.microchip.com Web Address: www.microchip.com Australia - Sydney Tel: 61-2-9868-6733 Fax: 61-2-9868-6755 India - Bangalore Tel: 91-80-2229-0061 Fax: 91-80-2229-0062 China - Beijing Tel: 86-10-8528-2100 Fax: 86-10-8528-2104 India - New Delhi Tel: 91-11-5160-8631 Fax: 91-11-5160-8632 Austria - Weis Tel: 43-7242-2244-399 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 China - Chengdu Tel: 86-28-8676-6200 Fax: 86-28-8676-6599 India - Pune Tel: 91-20-2566-1512 Fax: 91-20-2566-1513 France - Paris Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79 China - Fuzhou Tel: 86-591-8750-3506 Fax: 86-591-8750-3521 Japan - Yokohama Tel: 81-45-471- 6166 Fax: 81-45-471-6122 Germany - Munich Tel: 49-89-627-144-0 Fax: 49-89-627-144-44 China - Hong Kong SAR Tel: 852-2401-1200 Fax: 852-2401-3431 Korea - Seoul Tel: 82-2-554-7200 Fax: 82-2-558-5932 or 82-2-558-5934 Atlanta Alpharetta, GA Tel: 770-640-0034 Fax: 770-640-0307 Boston Westborough, MA Tel: 774-760-0087 Fax: 774-760-0088 Chicago Itasca, IL Tel: 630-285-0071 Fax: 630-285-0075 Dallas Addison, TX Tel: 972-818-7423 Fax: 972-818-2924 Detroit Farmington Hills, MI Tel: 248-538-2250 Fax: 248-538-2260 Kokomo Kokomo, IN Tel: 765-864-8360 Fax: 765-864-8387 Los Angeles Mission Viejo, CA Tel: 949-462-9523 Fax: 949-462-9608 San Jose Mountain View, CA Tel: 650-215-1444 Fax: 650-961-0286 China - Qingdao Tel: 86-532-502-7355 Fax: 86-532-502-7205 China - Shanghai Tel: 86-21-5407-5533 Fax: 86-21-5407-5066 China - Shenyang Tel: 86-24-2334-2829 Fax: 86-24-2334-2393 China - Shenzhen Tel: 86-755-8203-2660 Fax: 86-755-8203-1760 China - Shunde Tel: 86-757-2839-5507 Fax: 86-757-2839-5571 China - Wuhan Tel: 86-27-5980-5300 Fax: 86-27-5980-5118 China - Xian Tel: 86-29-8833-7250 Fax: 86-29-8833-7256 Malaysia - Penang Tel: 604-646-8870 Fax: 604-646-5086 Philippines - Manila Tel: 011-632-634-9065 Fax: 011-632-634-9069 Singapore Tel: 65-6334-8870 Fax: 65-6334-8850 Italy - Milan Tel: 39-0331-742611 Fax: 39-0331-466781 Netherlands - Drunen Tel: 31-416-690399 Fax: 31-416-690340 Spain - Madrid Tel: 34-91-352-30-52 Fax: 34-91-352-11-47 UK - Wokingham Tel: 44-118-921-5869 Fax: 44-118-921-5820 Taiwan - Hsinchu Tel: 886-3-572-9526 Fax: 886-3-572-6459 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 Toronto Mississauga, Ontario, Canada Tel: 905-673-0699 Fax: 905-673-6509 07/01/05 DS80175E-page 6 © 2005 Microchip Technology Inc.