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www.DataSheet4U.com PIC16C781/782 Data Sheet 8-Bit CMOS Microcontrollers with A/D, D/A, OPAMP, Comparators and PSMC  2001 Microchip Technology Inc. Preliminary DS41171A 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. 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contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates.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, PIC, PICmicro, PICMASTER, PICSTART, PRO MATE, KEELOQ, SEEVAL, MPLAB and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. Total Endurance, ICSP, In-Circuit Serial Programming, FilterLab, MXDEV, microID, FlexROM, fuzzyLAB, MPASM, MPLINK, MPLIB, PICC, PICDEM, PICDEM.net, ICEPIC, Migratable Memory, FanSense, ECONOMONITOR, Select Mode and microPort are trademarks of Microchip Technology Incorporated in the U.S.A. Serialized Quick Term 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. © 2001, 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® 8-bit MCUs, KEELOQ® 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. DS41171A - page ii Preliminary  2001 Microchip Technology Inc. PIC16C781/782 8-Bit CMOS Microcontrollers with A/D, D/A, OPAMP, Comparators and PSMC Microcontroller Core Features: • High performance RISC CPU • Only 35 single word instructions to learn • All single cycle instructions except for program branches which are two cycle • Direct, indirect and relative addressing modes - Operating speed: DC - 20 MHz clock input DC - 200 ns instruction cycle Device PIC16C781 PIC16C782 Program Memory X14 1K 2K Data Memory X8 128 128 Microcontroller Core Features (Continued): • Low power, high speed CMOS EPROM technology • Fully static design • Low power consumption: - < 2 mA @ 5V, 4 MHz - < 1 µA typical standby current. Pin Diagram PDIP, Windowed CERDIP, SOIC, SSOP RA0/AN0/OPA+ RA1/AN1/OPARA4/T0CKI RA5/MCLR/VPP VSS AVSS RA2/AN2/VREF2 RA3/AN3/VREF1 RB0/INT/AN4/VR RB1/AN5/VDAC •1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 20 19 18 17 16 15 14 13 12 11 RB3/AN7/OPA RB2/AN6 RA7/OSC1/CLKIN RA6/OSC2/CLKOUT/T1CKI VDD AVDD RB7/C2/PSMC1B/T1G RB6/C1/PSMC1A RB5 RB4 PIC16C781/782 • 8-level deep hardware stack • Interrupt capability (up to 8 internal/external interrupt sources) • 16 I/O pins: - Individual direction control (13 pins) - Input only (3 pins), low leakage (2 pins) - Digital/Analog inputs (8 pins) • Programmable PORTB interrupt-on-change (8 pins) • Programmable PORTB weak pull-ups (8 pins) • Power-on Reset (POR) • Power-up Timer (PWRT) and Oscillator Start-up Timer (OST) • Watchdog Timer (WDT) with a software enabled option and its own on-chip RC oscillator for reliable operation • Programmable Brown-out Reset (BOR) • Programmable Low Voltage Detection (LVD) • Internal/external MCLR • Programmable code protection • Power saving SLEEP mode • Selectable oscillator options: HS, XT, LP, EC, RC, INTRC (4 MHz/37 kHz) • In-Circuit Serial Programming™ (ISCP™) • Program Memory Read (PMR) capability • Four user programmable ID locations • Wide operating voltage range: - 2.5V to 5.5V for commercial and industrial temperature ranges - Extended temperature range available Peripheral Features: • Timer0: 8-bit timer/counter with 8-bit prescaler • Enhanced Timer1: - 16-bit timer/counter with prescaler - External Gate Input mode - Option to use OSC1 and OSC2 in LP mode as Timer1 oscillator, if INTRC oscillator mode selected • Analog-to-Digital Converter (ADC): - 8-bit resolution - Programmable 8-channel input - Internal voltages available for selfdiagnostics • Digital-to-Analog Converter (DAC): - 8-bit resolution - Reference from AVDD, VREF1, or VR module - Output configurable to VDAC pin, Comparators, and ADC reference • Operational Amplifier module (OPA): - Firmware initiated input offset voltage Auto Calibration module - Low leakage inputs - Programmable Gain Bandwidth Product (GBWP)  2001 Microchip Technology Inc. Preliminary DS41171A-page 1 PIC16C781/782 Peripheral Features (Continued): • Dual Analog Comparator module with: - Individual enable and interrupt bits - Programmable speed and output polarity - Fully configurable inputs and outputs - Reference from DAC, or VREF1/VREF2 - Low input offset voltage. • VR voltage reference module: - 3.072V +/- 0.7% @25°C, AVDD = 5V - Configurable output to ADC reference, DAC reference, and VR pin - 5 mA sink/source • Programmable Switch Mode Controller module: - PWM and PSM modes - Programmable switching frequency - Configurable for either single or dual feedback inputs - Configurable single or dual outputs - Slope compensation output available in single output mode Key Features PICmicro™ Mid-Range Reference Manual (DS33023) Operating Frequency RESETS (and Delays) Program Memory (14 bit words) Data Memory (bytes) Interrupts I/O Ports Timers Programmable Switch Mode Controller 8-bit Analog-to-Digital Module ADC channels 8-bit Digital-to-Analog Module Comparators Comparator Channels Operational Amplifier Voltage Reference Brown-out Reset Programmable Low Voltage Detect Instruction Set PIC16C781 PIC16C782 DC - 20 MHz 1K 128 8 13 + 3 Input only 2 1 1 8 External, 2 Internal 1 2 4 (AN<7:4>) 1 1 Yes Yes 35 Instructions DC - 20 MHZ 2K 128 8 13 + 3 Input only 2 1 1 8 External, 2 Internal 1 2 4 (AN<7:4>) 1 1 Yes Yes 35 Instructions POR, BOR, MCLR, WDT (PWRT, OST) POR, BOR, MCLR, WDT (PWRT, OST) DS41171A-page 2 Preliminary  2001 Microchip Technology Inc. PIC16C781/782 Table of Contents 1.0 Device Overview ......................................................................................................................................................................... 5 2.0 Memory Organization ................................................................................................................................................................ 11 3.0 I/O Ports .................................................................................................................................................................................... 25 4.0 Program Memory Read (PMR) .................................................................................................................................................. 47 5.0 Timer0 Module .......................................................................................................................................................................... 51 6.0 Timer1 Module with Gate Control .............................................................................................................................................. 55 7.0 Voltage Reference Module (VR) ................................................................................................................................................ 61 8.0 Programmable Low Voltage Detect Module (PLVD) ................................................................................................................. 63 9.0 Analog-to-Digital Converter (ADC) Module ............................................................................................................................... 69 10.0 Digital-to-Analog Converter (DAC) Module ............................................................................................................................... 79 11.0 Operational Amplifier (OPA) Module ......................................................................................................................................... 83 12.0

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