Описание
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 microcontrollers 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.
- Up to 4 Channels with Complementary Outputs
- Edge or Center-Aligned Operation
- Flexible Dead-Band Generator
- Hardware Fault Protection Inputs
- Simultaneous Update of Duty Cycle and Period:
- Flexible Special Event Trigger output
- 100,000 Erase/Write Cycle Enhanced Flash Program Memory, Typical
- 1,000,000 Erase/Write Cycle Data EEPROM Memory, Typical
- Flash/Data EEPROM Retention: 100 Years
- Self-Programmable under Software Control
- Priority Levels for Interrupts
- 8 x 8 Single-Cycle Hardware Multiplier
- Extended Watchdog Timer (WDT):
- Programmable period from 41 ms to 131s
- Single-Supply In-Circuit Serial Programming™ (ICSP™) via Two Pins
- In-Circuit Debug (ICD) via Two Pins:
- Drives PWM outputs safely when debugging
- Tape and Reel Packaging
