PIC18LF2331T-I/SO - 8-bit PIC18 MCU, 8KB Flash, 40MHz, 28-SOIC | Microchip
MPN: PIC18LF2331T-I/SO ✓ فعالPIC18LF2331T-I/SO جائزہ
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and peripherals such as timers, ADCs, communication interfaces, and I/O pins. The PIC18 family uses an enhanced 8-bit Harvard RISC architecture with a 16-bit instruction word, which keeps code density high while instruction execution remains single-cycle at 40MHz (10 MIPS). MCUs sit at the lowest tier of embedded systems alongside microprocessors, DSPs, and FPGAs, and they are categorized as "8-bit" because their ALU and data bus operate on 8-bit words.
Key features include 8KB (4K x 16) Flash, 768 bytes of RAM, 256 bytes of EEPROM, an integrated 10-bit ADC, enhanced USART, MSSP (SPI/I2C), and dedicated motion-feedback peripherals including a quadrature encoder interface and power-control PWM. The 28-SOIC package is a wide-body gull-wing SOIC suited for hand-soldered prototypes and industrial designs where the small QFN alternative is undesirable. The "LF" silicon allows operation from 2.0V to 5.5V, supporting battery-powered designs.
The PIC18F2331 architecture uses a modified Harvard core with separate program and data buses and a hardware multiply unit, delivering deterministic interrupt response at 10 MIPS. The motion-feedback modules on this die are designed for sensorless or sensored BLDC/PMSM motor control, reducing external component count compared to a generic MCU + external gate-driver approach.
Typical applications include sensorless BLDC motor control, sensored BLDC/PMSM drives, low-voltage industrial automation, fans and pumps, and small appliance control. The 40MHz CPU and motion-control peripherals allow torque/speed loop closure entirely in firmware. Design considerations include selecting a crystal or oscillator that matches the application bandwidth, ensuring the 2.0V minimum is respected for battery-powered designs, and using Microchip's MPLAB X IDE plus MPLAB C18 or XC8 compilers for firmware development.
کے لیے ڈراپ اِن متبادل PIC18LF2331T-I/SO — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC18LF2331T-I/SO (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, ADC, Core Architecture, Operating Temperature, I/O Pins.
PIC18LF2331-I/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18LF2331-I/SP
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18LF2331T-I/ML
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18LF2331T-I/MM
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18LF2321T-I/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18LF2320T-I/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18LF2331T-I/SO زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | PIC18 (8-bit Harvard RISC) |
| Program Memory | 8 KB Flash (4K x 16) |
| Data Memory (RAM) | 768 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Frequency | 40 MHz (10 MIPS) |
| Operating Voltage Range | 2.0 V to 5.5 V (LF low-voltage) |
| I/O Pins | 22 (28-pin SOIC) |
| پیکیج | 28-pin SOIC (SO) |
| Temperature Grade | Industrial -40C to +85C |
| ماؤنٹنگ ٹائپ | Surface Mount (gull-wing SOIC) |
| Packaging | Tape and Reel (T) |
| Motion-Feedback Peripherals | Quadrature Encoder Interface, Power-Control PWM |
| Communication | EUSART, MSSP (SPI/I2C) |
| RoHS اسٹیٹس | Compliant |
PIC18LF2331T-I/SO پن کنفیگریشن
| پن 1 | MCLR — Master Clear (reset) input, active low |
| پن 2 | RA0/AN0 — Digital I/O / analog input |
| پن 3 | RA1/AN1 — Digital I/O / analog input |
| پن 4 | RA2/AN2/VREF- — Digital I/O / analog input / ADC VREF- |
| پن 5 | RA3/AN3/VREF+ — Digital I/O / analog input / ADC VREF+ |
| پن 6 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| پن 7 | RA5/AN4 — Digital I/O / analog input |
| پن 8 | VDD — Positive supply voltage |
| پن 9 | OSC1/RA7 — Crystal oscillator input / digital I/O |
| پن 10 | OSC2/RA6 — Crystal oscillator output / digital I/O |
| پن 11 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output / clock input |
| پن 12 | RC1/T1OSI — Digital I/O / Timer1 oscillator input |
| پن 13 | RC2/CCP1 — Digital I/O / Capture/Compare/PWM 1 |
| پن 14 | RC3 — Digital I/O |
| پن 15 | RC4 — Digital I/O |
| پن 16 | RC5 — Digital I/O |
| پن 17 | RC6/TX/CK — Digital I/O / EUSART TX / clock |
| پن 18 | RC7/RX/DT — Digital I/O / EUSART RX / data |
| پن 19 | VSS — Ground reference |
| پن 20 | VDD — Positive supply voltage |
| پن 21 | RB0/INT — Digital I/O / external interrupt |
| پن 22 | RB1 — Digital I/O |
| پن 23 | RB2 — Digital I/O |
| پن 24 | RB3 — Digital I/O |
| پن 25 | RB4 — Digital I/O |
| پن 26 | RB5 — Digital I/O |
| پن 27 | VSS — Ground reference |
| پن 28 | RB7/PGD — Digital I/O / ICSP data |
عام استعمالات
PIC18LF2331T-I/SO کے لیے موزوں ہے 6 ایپلیکیشنs: Sensorless BLDC Motor Control, Sensored BLDC / PMSM Motor Drive, Low-Voltage Industrial Automation, Small Fan and Pump Controllers, Battery-Powered Small Appliances, HVAC Blower and Damper Control.
Sensorless BLDC Motor Control
The PIC18LF2331T-I/SO is purpose-built for sensorless brushless DC motor control thanks to its integrated power-control PWM module and dedicated motion-feedback peripherals. With 40MHz (10 MIPS) CPU throughput, the firmware can run a sensorless back-EMF zero-crossing algorithm at PWM frequencies up to 20kHz, leaving cycles for the speed PI loop. Its 2.0V-5.5V operating range supports 1-cell Li-ion powered tools, while 22 I/O pins are sufficient for Hall/encoder inputs, fault inputs, and a serial debug link. Compared to a discrete MCU + external gate-driver architecture, this part reduces BOM count and PCB area by integrating the PWM, ADC triggering, and fault handling on-die. The 28-SOIC package remains hand-solder-friendly for low-volume fans, pumps, and small appliances.
تجویز کردہ
Sensored BLDC / PMSM Motor Drive
When sensored BLDC or PMSM control is required, the PIC18LF2331T-I/SO's quadrature encoder interface (QEI) and Power-Control PWM (PCPWM) modules handle the encoder decoding and three-phase PWM generation in hardware. The 8KB Flash accommodates field-oriented-control (FOC) code plus Microchip's application library, while the 256-byte EEPROM stores motor calibration parameters. The industrial -40C to +85C temperature range supports HVAC blowers, e-bike traction motors, and small industrial drives. Designers typically pair this MCU with a three-phase gate driver such as the MCP8026, which accepts the MCU's PWM outputs and drives six N-MOSFETs. The 28-SOIC footprint remains accessible for prototyping while keeping PCB area smaller than equivalent 40-pin PIC18LF4331 designs.
تجویز کردہ
Low-Voltage Industrial Automation
The PIC18LF2331T-I/SO is well-suited to 24V industrial-automation subsystems that step down to 3.3V or 5V logic rails, where the 2.0V-5.5V LF supply range is essential. With 22 I/O and an EUSART plus MSSP (SPI/I2C), it can interface to digital sensors, RS-485 transceivers, and I2C EEPROM/FRAM for parameter logging. The 40MHz CPU enables Modbus RTU polling cycles under 10ms, while the 768-byte RAM holds Modbus buffers plus a small RTOS or cooperative scheduler. Industrial -40C to +85C operation supports cabinet-mounted controls, and the 28-SOIC package survives the vibration and thermal stress typical of factory-floor equipment. Compared to 5V-only PIC18F2331, the LF variant extends battery-backed designs to the same hardware platform.
تجویز کردہ
Small Fan and Pump Controllers
The PIC18LF2331T-I/SO's dedicated motion-control peripherals and PWM module make it a natural fit for variable-speed fan and pump controllers. The PCPWM module drives the switching FET directly while the QEI decodes tachometer feedback; firmware runs a closed-loop RPM controller at 40MHz. With 8KB Flash the part easily fits Microchip's fan-control library and a small UI state machine, leaving cycles for serial diagnostics. The 2.0V minimum supply supports 1-cell Li-ion powered portable fans, while the 28-SOIC package is cost-effective for high-volume CE appliance designs. Compared to using a generic PIC16 plus external gate-driver, this part reduces component count and accelerates time-to-market.
تجویز کردہ
Battery-Powered Small Appliances
The PIC18LF2331T-I/SO is ideal for handheld and battery-powered small appliances where the 2.0V-5.5V LF supply range and integrated motion-control peripherals together minimize external parts. A cordless blender, electric toothbrush, or handheld vacuum can run the MCU directly from a 1-cell Li-ion (3.0-4.2V) without a boost regulator. The PIC18LF2331's nanoWatt power-managed modes drop quiescent current to <1uA in sleep, extending standby battery life by orders of magnitude. The 768-byte RAM holds a small UI stack, while 8KB Flash fits the motor-control firmware plus BLE command parser when paired with an external module. Compared to 5V-only PIC18F2331, the LF variant eliminates the need for a boost converter.
تجویز کردہ
HVAC Blower and Damper Control
In HVAC blower and damper actuators, the PIC18LF2331T-I/SO delivers reliable three-phase or single-phase BLDC control across the full -40C to +85C industrial range. The on-chip power-control PWM and QEI modules handle closed-loop RPM regulation at 40MHz, while the EUSART links to a building-automation bus (Modbus RTU or proprietary protocol) over RS-485. The 256-byte EEPROM stores commissioning parameters and damper calibration, and the 22 I/O pins accommodate end-switches, position feedback, and status LEDs. Compared to a discrete MCU + driver approach, this part reduces PCB area by roughly 30% and simplifies EMI compliance by keeping the PWM traces on-die. The 28-SOIC package survives thermal-cycling in plenum-mounted equipment.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC18LF2331T-I/SO — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC18LF2331-I/SO | PIC18LF2331T-I/ML | PIC18LF2331T-I/MM | PIC18LF2321T-I/SO | PIC18LF2320T-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (SO) | 28-SOIC (SO) - same | 28-QFN (ML) - different footprint | 28-QFN (MM) - different footprint | 28-SOIC (SO) - same | 28-SOIC (SO) - same |
| Program Memory (Flash) | 8 KB (4K x 16) | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Data Memory (RAM) | 768 bytes | 768 bytes | 768 bytes | 768 bytes | 768 bytes | 256 bytes |
| Maximum CPU Frequency | 40 MHz (10 MIPS) | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Operating Voltage Range | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V (LF) |
| Motion-Control Peripherals | QEI + Power-Control PWM | QEI + PCPWM - same | QEI + PCPWM - same | QEI + PCPWM - same | Reduced motion set (~10% less) | No motion peripherals |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C |
| Packaging Form | Tape & Reel | Tube | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel |
اہم امتیازی خصوصیات
- Dedicated motion-control peripherals integrated on-die (بمقابلہPIC18F25K22-I/SO)
- Low-voltage 2.0V-5.5V supply range (LF silicon) (بمقابلہPIC18F2331-I/SO)
- 28-SOIC package for hand-soldering and prototyping (بمقابلہPIC18LF2331T-I/MM)
- nanoWatt power-managed modes for sleep current <1uA (بمقابلہPIC18LF2320T-I/SO)
ڈیزائن نوٹس
The PIC18LF2331T-I/SO has two VDD pins (8 and 20) and two VSS pins (19 and 27). Both VDD pins must be tied together and both VSS pins must be tied together; do not leave a VDD/VSS pair unconnected or the internal analog references will drift. Place a 100nF decoupling capacitor within 5mm of each VDD pin and a bulk 10uF tantalum or ceramic at the package. For battery-powered designs using the LF silicon at 2.0V, ensure the regulator holds above 2.0V at full load including inrush on motor start; 1-cell Li-ion (3.0-4.2V) is comfortable headroom.
Use a 4-layer PCB with a continuous ground plane for the SOIC variant in motor-control designs; switching noise from the PWM traces couples easily back into analog inputs and the QEI lines if the ground is split. Keep the oscillator traces short and surrounded by ground; the 40MHz (10 MIPS) timing budget is tight enough that 2-3cm of stray trace causes measurable jitter on serial communications. Place the ICSP pins (RB6/RB7) on test points or a 2x3 header so firmware can be programmed in-circuit without removing the MCU.
A common pitfall is configuring the oscillator for HS mode above 25MHz without enabling the PLL; the 40MHz maximum requires HS+PLL or external clock input and the configuration bits are write-once after programming. Another pitfall is forgetting to configure the analog pins (RA0-RA5, RB0-RB3) as digital after an ADC read, leaving them as analog inputs and producing unexpected high-impedance behavior on digital reads. Always set ANSEL/ANSELH bits to disable analog on pins used for digital I/O. Finally, the EUSART baud-rate register value at 40MHz Fosc must account for BRGH and BRG16 settings; the SPBRG table in the datasheet is the authoritative source.
When driving motor-control PWMs at high frequency (>15kHz), place a series ferrite bead on the VDD supply and keep the PWM traces away from the QEI input pins. The on-chip Power-Control PWM module can be configured for edge-aligned or center-aligned mode; center-aligned mode reduces harmonic content at the cost of twice the PWM frequency for the same output. For encoder signals, add 1kohm pull-ups on the QEA and QEB lines if the encoder is open-drain; long encoder cables otherwise pick up noise that the QEI miscounts as position pulses.
تعمیل کی معلومات
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified (industrial grade -40C to +85C only).
