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PIC18F2331 Datasheet(PDF) 11 Page - Microchip Technology |
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PIC18F2331 Datasheet(HTML) 11 Page - Microchip Technology |
11 / 392 page 2010 Microchip Technology Inc. DS39616D-page 11 PIC18F2331/2431/4331/4431 1.0 DEVICE OVERVIEW This document contains device-specific information for the following devices: This family offers the advantages of all PIC18 microcontrollers – namely, high computational performance at an economical price, with the addition of high-endurance enhanced Flash program memory and a high-speed 10-bit A/D Converter. On top of these features, the PIC18F2331/2431/4331/4431 family introduces design enhancements that make these micro- controllers a logical choice for many high-performance, power control and motor control applications. These special peripherals include: • 14-Bit Resolution Power Control PWM module (PCPWM) with Programmable Dead-Time Insertion • Motion Feedback Module (MFM), including a 3-Channel Input Capture (IC) module and Quadrature Encoder Interface (QEI) • High-Speed 10-Bit A/D Converter (HSADC) The PCPWM can generate up to eight complementary PWM outputs with dead-band time insertion. Overdrive current is detected by off-chip analog comparators or the digital Fault inputs (FLTA, FLTB). The MFM Quadrature Encoder Interface provides precise rotor position feedback and/or velocity measurement. The MFM 3x input capture or external interrupts can be used to detect the rotor state for electrically commutated motor applications using Hall sensor feedback, such as BLDC motor drives. PIC18F2331/2431/4331/4431 devices also feature Flash program memory and an internal RC oscillator with built-in LP modes. 1.1 New Core Features 1.1.1 nanoWatt Technology All of the devices in the PIC18F2331/2431/4331/4431 family incorporate a range of features that can signifi- cantly reduce power consumption during operation. Key items include: • Alternate Run Modes: By clocking the controller from the Timer1 source or the internal oscillator block, power consumption during code execution can be reduced by as much as 90%. • Multiple Idle Modes: The controller can also run with its CPU core disabled, but the peripherals are still active. In these states, power consumption can be reduced even further, to as little as 4% of normal operation requirements. • On-the-Fly Mode Switching: The power- managed modes are invoked by user code during operation, allowing the user to incorporate power-saving ideas into their application’s software design. • Lower Consumption in Key Modules: The power requirements for both Timer1 and the Watchdog Timer have been reduced by up to 80%, with typical values of 1.1 and 2.1 A, respectively. 1.1.2 MULTIPLE OSCILLATOR OPTIONS AND FEATURES All of the devices in the PIC18F2331/2431/4331/4431 family offer nine different oscillator options, allowing users a wide range of choices in developing application hardware. These include: • Four Crystal modes, using crystals or ceramic resonators. • Two External Clock modes, offering the option of using two pins (oscillator input and a divide-by-4 clock output) or one pin (oscillator input, with the second pin reassigned as general I/O). • Two External RC Oscillator modes, with the same pin options as the External Clock modes. • An internal oscillator block, which provides an 8 MHz clock and an INTRC source (approxi- mately 31 kHz, stable over temperature and VDD), as well as a range of 6 user-selectable clock frequencies (from 125 kHz to 4 MHz) for a total of 8 clock frequencies. • A Phase Lock Loop (PLL) frequency multiplier, available to both the High-Speed Crystal and Internal Oscillator modes, which allows clock speeds of up to 40 MHz. Used with the internal oscillator, the PLL gives users a complete selection of clock speeds, from 31 kHz to 32 MHz – all without using an external crystal or clock circuit. • Fail-Safe Clock Monitor: This option constantly monitors the main clock source against a reference signal provided by the internal oscillator. If a clock failure occurs, the controller is switched to the internal oscillator block, allowing for continued low-speed operation or a safe application shutdown. • Two-Speed Start-up: This option allows the internal oscillator to serve as the clock source from Power-on Reset, or wake-up from Sleep mode, until the primary clock source is available. • PIC18F2331 • PIC18LF2331 • PIC18F2431 • PIC18LF2431 • PIC18F4331 • PIC18LF4331 • PIC18F4431 • PIC18LF4431 |
Similar Part No. - PIC18F2331_10 |
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Similar Description - PIC18F2331_10 |
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