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PIC17C756 Datasheet(PDF) 7 Page - Microchip Technology |
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PIC17C756 Datasheet(HTML) 7 Page - Microchip Technology |
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7 / 306 page  1998-2013 Microchip Technology Inc. DS30289C-page 7 PIC17C7XX 1.0 OVERVIEW This data sheet covers the PIC17C7XX group of the PIC17CXXX family of microcontrollers. The following devices are discussed in this data sheet: • PIC17C752 • PIC17C756A • PIC17C762 • PIC17C766 The PIC17C7XX devices are 68/84-pin, EPROM based members of the versatile PIC17CXXX family of low cost, high performance, CMOS, fully static, 8-bit microcontrollers. All PIC® microcontrollers employ an advanced RISC architecture. The PIC17CXXX has enhanced core fea- tures, 16-level deep stack, and multiple internal and external interrupt sources. The separate instruction and data buses of the Harvard architecture allow a 16- bit wide instruction word with a separate 8-bit wide data path. The two stage instruction pipeline allows all instructions to execute in a single cycle, except for pro- gram branches (which require two cycles). A total of 58 instructions (reduced instruction set) are available. Additionally, a large register set gives some of the architectural innovations used to achieve a very high performance. For mathematical intensive applications, all devices have a single cycle 8 x 8 Hardware Multiplier. PIC17CXXX microcontrollers typically achieve a 2:1 code compression and a 4:1 speed improvement over other 8-bit microcontrollers in their class. PIC17C7XX devices have up to 902 bytes of RAM and 66 I/O pins. In addition, the PIC17C7XX adds several peripheral features, useful in many high performance applications, including: • Four timer/counters • Four capture inputs • Three PWM outputs • Two independent Universal Synchronous Asyn- chronous Receiver Transmitters (USARTs) • An A/D converter (multi-channel, 10-bit resolution) • A Synchronous Serial Port (SPI and I2C w/ Master mode) These special features reduce external components, thus reducing cost, enhancing system reliability and reducing power consumption. There are four oscillator options, of which the single pin RC oscillator provides a low cost solution, the LF oscil- lator is for low frequency crystals and minimizes power consumption, XT is a standard crystal and the EC is for external clock input. The SLEEP (power-down) mode offers additional power saving. Wake-up from SLEEP can occur through several external and internal interrupts and device RESETS. A highly reliable Watchdog Timer with its own on-chip RC oscillator provides protection against software mal- function. There are four configuration options for the device operational mode: • Microprocessor • Microcontroller • Extended microcontroller • Protected microcontroller The microprocessor and extended microcontroller modes allow up to 64K-words of external program memory. The device also has Brown-out Reset circuitry. This allows a device RESET to occur if the device VDD falls below the Brown-out voltage trip point (BVDD). The chip will remain in Brown-out Reset until VDD rises above BVDD. A UV erasable, CERQUAD packaged version (compat- ible with PLCC), is ideal for code development, while the cost-effective One-Time-Programmable (OTP) ver- sion is suitable for production in any volume. The PIC17C7XX fits perfectly in applications that require extremely fast execution of complex software programs. These include applications ranging from precise motor control and industrial process control to automotive, instrumentation, and telecom applications. The EPROM technology makes customization of appli- cation programs (with unique security codes, combina- tions, model numbers, parameter storage, etc.) fast and convenient. Small footprint package options (including die sales) make the PIC17C7XX ideal for applications with space limitations that require high performance. High speed execution, powerful peripheral features, flexible I/O, and low power consumption all at low cost make the PIC17C7XX ideal for a wide range of embed- ded control applications. 1.1 Family and Upward Compatibility The PIC17CXXX family of microcontrollers have archi- tectural enhancements over the PIC16C5X and PIC16CXX families. These enhancements allow the device to be more efficient in software and hardware requirements. Refer to Appendix A for a detailed list of enhancements and modifications. Code written for PIC16C5X or PIC16CXX can be easily ported to PIC17CXXX devices (Appendix B). 1.2 Development Support The PIC17CXXX family is supported by a full featured macro assembler, a software simulator, an in-circuit emulator, a universal programmer, a “C” compiler and fuzzy logic support tools. For additional information, see Section 19.0. |
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