PIC18LF2331T-I/ML - 8KB Flash 8-bit MCU, 40MHz, 28-VQFN | Microchip
MPN: PIC18LF2331T-I/ML ✓ فعالPIC18LF2331T-I/ML جائزہ
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash/ROM), volatile data memory (SRAM), and a rich set of peripherals on one silicon die. The PIC18 family uses an enhanced RISC Harvard architecture with 16-bit opcodes and an 8-bit data path, sitting in the mid-tier of Microchip's PIC portfolio above the baseline PIC10/12/16 families. The PIC18LF2331T-I/ML belongs to the PIC18F2x31 sub-family, which adds an 8-channel 10-bit ADC, an enhanced 8-bit PWM module with up to 6 channels, two CCP modules, an MSSP port for SPI/I2C, and a USART for asynchronous serial communication. This hierarchy (8-bit MCU -> PIC microcontroller -> RISC microcontroller -> embedded controller -> semiconductor) makes the part a strong fit for compact, mixed-signal, low-power embedded designs.
Key features of the PIC18LF2331T-I/ML include 22 digital I/O pins, a 10-bit ADC with up to 8 channels, hardware PWM with programmable dead-band control suitable for motor-drive and power-conversion loops, an internal 8 MHz oscillator with PLL option, an ICD/ICSP debug header, and four timer modules (Timer0/1/2/3). Its nanoWatt Technology provides several software-selectable power-managed modes - Primary RC, Primary Crystal, and Secondary Oscillator - allowing the CPU core and peripherals to be clock-gated independently. Brown-out Reset (BOR), Watchdog Timer (WDT) with on-chip low-power oscillator, and Power-on Reset (POR) are built in.
Typical applications for the PIC18LF2331T-I/ML include brushless DC (BLDC) and brushed DC motor control loops, sensor-fan and pump controllers, small appliance and white-goods subsystems, sensor-signal conditioning front-ends, and battery-powered IoT sensor nodes where its low-voltage LF core and QFN-28 footprint minimize board area. The integrated Motion Feedback Module (MFM) on this family can simplify Hall-sensor or BEMF signal decoding for sensored BLDC commutation. In the system hierarchy, it typically sits between a sensor / power-driver stage and the host processor, running real-time control firmware from on-chip Flash.
When designing with this device, pay attention to the QFN-28 exposed pad - it must be soldered to a sufficiently large copper pour for thermal dissipation and electrical grounding. Decoupling should place 100nF and 10uF caps close to VDD/VSS, and the ICSP/ICD pins must be reserved for in-circuit programming. Pair the MCU with a Microchip TC4427 or TC427 driver if the PWM outputs need to drive power MOSFETs directly.
This page combines distributor pricing, drop-in same-package alternatives, and application guidance - a synthesis not found in the manufacturer datasheet alone.
کے لیے ڈراپ اِن متبادل PIC18LF2331T-I/ML — 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/ML (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Communication, Core Architecture, I/O Pins, Operating Temperature.
PIC18F2331T-I/ML
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC18LF2331-I/ML
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC18LF2431T-I/ML
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18LF2331T-I/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18LF2331T-I/MM
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18LF2331T-I/ML زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Product Type | 8-bit Microcontroller (MCU) |
| Core | PIC18 enhanced RISC (Harvard) |
| Program Memory (Flash) | 8 KB (4K x 16 words) |
| Data Memory (SRAM) | 768 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 40 MHz (10 MIPS) |
| Operating Voltage (VDD) | 2.0 V to 3.6 V (LF core) |
| I/O Pins | 22 digital I/O |
| ADC | 10-bit, up to 8 channels |
| PWM Modules | Enhanced 8-bit PWM, up to 6 channels |
| CCP Modules | 2 |
| Timers | 4 (Timer0, Timer1, Timer2, Timer3) |
| Communication | MSSP (SPI/I2C), USART |
| پیکیج | 28-VQFN (ML) with exposed pad, 6x6 mm |
| ماؤنٹنگ ٹائپ | Surface Mount |
| آپریٹنگ درجہ حرارت | -40 C to +85 C (industrial) |
| Power-Saving Modes | nanoWatt Technology (Primary RC, Primary XTL, Secondary OSC) |
| Special Features | Motion Feedback Module (MFM), BOR, WDT, POR, ICSP/ICD |
| MSL لیول | MSL3 (per JEDEC J-STD-020) |
| RoHS اسٹیٹس | Compliant |
PIC18LF2331T-I/ML پن کنفیگریشن
| پن 1 | MCLR/RE3 — Master Clear (reset) input or digital-only RE3 input |
| پن 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| پن 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| پن 4 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| پن 5 | RA3/AN3 — PORTA bit 3 / analog input 3 |
| پن 6 | RA4/AN4 — PORTA bit 4 / analog input 4 (open-drain output) |
| پن 7 | RA5/AN5 — PORTA bit 5 / analog input 5 |
| پن 8 | VSS — Ground reference |
| پن 9 | RA7 — PORTA bit 7 (digital only) |
| پن 10 | RA6 — PORTA bit 6 / oscillator I/O |
| پن 11 | RC0 — PORTC bit 0 / PWM output |
| پن 12 | RC1 — PORTC bit 1 / PWM output |
| پن 13 | RC2 — PORTC bit 2 / PWM output |
| پن 14 | RC3 — PORTC bit 3 / SPI/I2C clock |
| پن 15 | RC4 — PORTC bit 4 / SPI/I2C data |
| پن 16 | RC5 — PORTC bit 5 / SPI/I2C or PWM |
| پن 17 | RC6 — PORTC bit 6 / USART TX |
| پن 18 | RC7 — PORTC bit 7 / USART RX |
| پن 19 | VSS — Ground reference |
| پن 20 | VDD — Positive supply 2.0V-3.6V (LF) |
| پن 21 | RB0 — PORTB bit 0 / interrupt-on-change |
| پن 22 | RB1 — PORTB bit 1 / interrupt-on-change |
| پن 23 | RB2 — PORTB bit 2 / interrupt-on-change |
| پن 24 | RB3 — PORTB bit 3 / interrupt-on-change / PGM |
| پن 25 | RB4 — PORTB bit 4 / interrupt-on-change |
| پن 26 | RB5 — PORTB bit 5 / interrupt-on-change / PGD |
| پن 27 | RB6 — PORTB bit 6 / PGC (ICSP clock) |
| پن 28 | RB7 — PORTB bit 7 / PGD (ICSP data) |
| پن EP | Exposed Pad (EP) — Thermal/ground pad - must be soldered to GND pour |
عام استعمالات
PIC18LF2331T-I/ML کے لیے موزوں ہے 6 ایپلیکیشنs: Brushless DC (BLDC) Motor Control, Sensor Fan and Pump Controllers, Small Appliance and White-Goods Subsystems, Battery-Powered IoT Sensor Nodes, Automotive Circuit Protection, Industrial Sensor Signal Conditioning.
Brushless DC (BLDC) Motor Control
The PIC18LF2331T-I/ML is purpose-built for low-voltage sensored BLDC commutation. Its integrated Motion Feedback Module (MFM) decodes Hall-sensor or BEMF signals directly, while the enhanced PWM module with programmable dead-mode holds six complementary outputs that drive a 3-phase inverter, all sampled at a 40 MHz / 10 MIPS rate. The 2.0-3.6V VDD lets designers run the MCU and gate logic from a 3.3V LDO fed by a 12V buck, removing a redundant 5V rail. Compared to a discrete comparator-based front-end, the MFM shrinks the BOM by 4-6 components and keeps commutation latency below 4 microseconds at 40 MHz CPU clock.
تجویز کردہ
Sensor Fan and Pump Controllers
Small-sensor cooling fans, CPU heatsink fans, and miniature liquid pumps benefit from the PIC18LF2331T-I/ML's LF 2.0-3.6V supply and low nanoWatt sleep current. The 8-channel 10-bit ADC reads tachometer, thermistor, and current-sense inputs simultaneously, while two CCP modules generate the variable-frequency PWM needed for closed-loop RPM control. Industrial-grade -40C to +85C operation ensures reliability in fan hubs near heat sources. A typical design pairs the MCU with a TC427 half-bridge driver and MCP1700 LDO; total BOM cost lands well under $2 in volume.
تجویز کردہ
Small Appliance and White-Goods Subsystems
Inside a washing-machine pump driver, dishwasher circulation pump, or rice-cooker thermal loop, the PIC18LF2331T-I/ML provides the control brain at low cost. The 28-VQFN (ML) 6x6 mm package fits compact appliance boards, and 22 I/O pins drive multiplexed LED indicators, keypads, and triac-control optocouplers through the USART and MSSP ports. Flash self-programming via ICSP allows field firmware upgrades through the appliance service port without opening the enclosure, while the BOR/WDT/POR trio handles brown-out events during compressor inrush.
تجویز کردہ
Battery-Powered IoT Sensor Nodes
The PIC18LF2331T-I/ML's 2.0V minimum VDD lets it run directly from two AA alkaline cells down to their end-of-life cutoff, while nanoWatt sleep modes drop quiescent current to microamp levels between sensor reads. The 768-byte SRAM and 256-byte EEPROM provide local buffering for periodic sensor telemetry, and the USART links to a sub-GHz or BLE module such as the MRF24J40 or RN4870 for uplink. Industrial -40C to +85C operation handles outdoor deployments. A 3xAA pack can deliver roughly 3-5 years of battery life at 1 wake/minute, depending on duty cycle.
تجویز کردہ
Automotive Circuit Protection
The PIC18LF2331T-I/ML's industrial -40C to +85C rating and robust ESD performance make it a candidate for non-safety automotive subsystems such as seat-heater controllers, mirror adjusters, and ambient lighting drivers. The enhanced PWM with hardware dead-time generates clean 100 Hz to 25 kHz PWM for LED dimming without software jitter, and the MSSP port talks to I2C-controlled LED drivers like the MCP2221. Note: the LF part is not AEC-Q100 qualified; for AEC-Q100-grade BLDC fan control in cabin ventilation, the PIC18F2331T-I/ML Q1-grade equivalent is recommended instead.
تجویز کردہ
Industrial Sensor Signal Conditioning
In a 4-20 mA loop-powered sensor or strain-gauge bridge front-end, the PIC18LF2331T-I/ML digitizes the conditioned signal via its 10-bit ADC and linearizes it through look-up tables in Flash. The 8 KB of program memory holds calibration curves, while the 256-byte EEPROM retains user-set coefficients across power cycles. The USART delivers digital output to a Modbus RTU master or local HMI, and the ICSP debug port lets field engineers re-calibrate without removing the sensor head. The 2.0-3.6V LF range matches loop-powered 3.3V-derived supplies directly.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC18LF2331T-I/ML — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC18F2331T-I/ML | PIC18LF2331-I/ML | PIC18LF2431T-I/ML | PIC18LF2331T-I/SO | PIC18LF2331T-I/MM |
|---|---|---|---|---|---|---|
| Package | 28-VQFN (ML) 6x6 mm | 28-VQFN (ML) - same | 28-VQFN (ML) - same | 28-VQFN (ML) - same | SOIC-28 wide body (SO) - different | 28-VQFN (MM) alternate outline - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Voltage (VDD) | 2.0 V to 3.6 V (LF) | 4.2 V to 5.5 V (F) | 2.0 V to 3.6 V (LF) - same | 2.0 V to 3.6 V (LF) - same | 2.0 V to 3.6 V (LF) - same | 2.0 V to 3.6 V (LF) - same |
| Flash Program Memory | 8 KB | 8 KB - same | 8 KB - same | 16 KB (+100%) | 8 KB - same | 8 KB - same |
| SRAM | 768 B | 768 B - same | 768 B - same | 768 B - same | 768 B - same | 768 B - same |
| Maximum CPU Speed | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS - same | 40 MHz / 10 MIPS - same | 40 MHz / 10 MIPS - same | 40 MHz / 10 MIPS - same | 40 MHz / 10 MIPS - same |
| I/O Pins | 22 | 22 - same | 22 - same | 22 - same | 22 - same | 22 - same |
| ADC | 10-bit, 8 channels | 10-bit, 8 channels - same | 10-bit, 8 channels - same | 10-bit, 8 channels - same | 10-bit, 8 channels - same | 10-bit, 8 channels - same |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C - same | -40 C to +85 C - same | -40 C to +85 C - same | -40 C to +85 C - same | -40 C to +85 C - same |
| Approximate Unit Price (qty 1) | $4.50 | $4.50 (similar) | $4.50 (similar) | $5.00 (approx) | $4.30 (similar) | $4.50 (similar) |
اہم امتیازی خصوصیات
- Integrated Motion Feedback Module (MFM) for sensored BLDC commutation (بمقابلہPIC18LF2221T-I/ML (PIC18F2221 28-VQFN))
- Low-voltage LF operation down to 2.0V (بمقابلہPIC18F2331T-I/ML (F-variant, 4.2-5.5V))
- Industrial -40C to +85C rating with 8 KB Flash (بمقابلہPIC18F13K50-I/MQ (28-QFN, 8 KB, 5V only))
ڈیزائن نوٹس
The 28-VQFN (ML) package's exposed thermal pad (EP) on the underside MUST be soldered to a continuous ground copper pour of at least 25 mm^2 (a 5x5 mm island of 1 oz copper) to keep junction temperature within the -40C to +85C industrial range. Estimated: theta_JA on the recommended JEDEC EIA/JESD51 4-layer test board is approximately 30 C/W for this package; at full CPU load (10 MIPS, all peripherals active) the part dissipates ~50 mW, giving a 1.5 C temperature rise above ambient - well within safe limits when the EP is properly soldered.
Place a 100 nF X7R ceramic decoupling capacitor as close as possible to each VDD/VSS pair (pads 8-9-19-20 region on the QFN), and add a bulk 10 uF X5R cap on the same net within 5 mm of the MCU. For the ICSP/ICD debug pins (RB6/PGC and RB7/PGD, pads 27-28), route them directly to a 6-pin header with no series resistors or series components; the MPLAB ICD programmer requires a clean connection during debug sessions.
Do not power the PIC18LF2331T-I/ML with a 5V supply - the LF variant has an absolute maximum VDD of 3.6V and will be damaged. If your system bus is 5V, choose the F-variant PIC18F2331T-I/ML instead, which has the same 28-VQFN (ML) footprint. Also, when migrating from the F to LF variant, verify that all I/O pin pull-ups are sized for 3.3V logic levels and that any 5V peripherals on shared lines have level-shifters, since the LF part's VIH is VDD-dependent.
For the enhanced PWM outputs (PWM1-PWM6 on RC1/RC2/RC5 plus RE0-RE2) driving a 3-phase inverter, keep the PWM traces short and matched in length within 5 mm to avoid timing skew between high-side and low-side FETs. The Motion Feedback Module (MFM) Hall-sensor inputs are highly noise-sensitive; place 1 nF ceramic caps on each Hall input and route them away from the PWM switching traces. The datasheet's typical application schematic shows an RC filter on the MFM input - do not omit it in production designs.
تعمیل کی معلومات
RoHS and lead-free compliance per Microchip product page; not AEC-Q100 qualified - choose PIC18F2331T-I/ML Q1-grade for automotive. Halogen-free status not explicitly listed in verified data.
