PIC18LF44J10-I/ML - 8-bit PIC MCU, 16KB Flash, 40MHz | Microchip
MPN: PIC18LF44J10-I/ML ✓ فعالPIC18LF44J10-I/ML جائزہ
What is a microcontroller? A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile data memory (SRAM), and a rich set of peripherals (ADC, timers, communication interfaces, GPIO) on a single die. MCUs sit at the bottom of the embedded computing hierarchy alongside discrete logic and digital signal controllers, and above general-purpose microprocessors in terms of integration for embedded/IoT, industrial, consumer, and automotive-body applications. The PIC18 family uses an enhanced Harvard RISC architecture with 16-bit opcodes and 8-bit data path, optimized for deterministic interrupt response and C-compiler efficiency.
The PIC18LF44J10-I/ML features the J-series peripheral set: enhanced addressable USART with LIN support, two synchronous serial ports with I2C address masking, a 10-channel 10-bit ADC, four timer modules, two capture/compare/PWM modules, and a Parallel Slave Port on larger pin-count variants. The 8x8 mm QFN-44 package (industrial designator ML) provides a low-profile 0.9 mm height and thermal pad for improved dissipation.
The J-series uses a single 3.3 V supply and internal switching regulator to provide the 2.5 V core voltage from VDD, which eliminates the need for external core voltage rails. This internal regulator architecture simplifies PCB layout for mixed-signal designs where the MCU coexists with 3.3 V analog and digital circuitry. The LF prefix designates the industrial-temperature variant supporting operation from -40C to +85C.
Typical applications include industrial sensor interfaces, USB-to-UART bridges (with USB transceiver), LIN nodes in automotive body electronics, low-power remote control panels, white-goods user interfaces, and consumer-electronics control boards. The 16 KB Flash is well matched to state-machine plus communication-stack firmware, while 1024 bytes of RAM supports modest RTOS usage.
When designing with this part, ensure the VDD/VSS pin-pair decoupling (100 nF ceramic within 3 mm of each supply pin) follows the J-series reference design, and that the internal regulator output capacitor (VCAP pin) uses a low-ESR 1 uF to 10 uF ceramic. Programming via ICSP requires the PGC/PGD pins to be accessible on production headers.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes that are not covered in the standalone datasheet, providing decision-ready information for engineers selecting 8-bit microcontrollers for cost-sensitive 3.3 V embedded designs.
کے لیے ڈراپ اِن متبادل PIC18LF44J10-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 PIC18LF44J10-I/ML (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Timers, Package, Core Architecture, ADC, RoHS Status.
PIC18F44J10-I/ML
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہ📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC18LF45J10-I/ML
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18LF46J10-I/ML
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہ📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC18LF24J10-I/ML
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18LF25J10T-I/ML
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18LF44J10-I/ML زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | PIC18 (8-bit RISC, enhanced Harvard) |
| CPU Frequency | 40 MHz (10 MIPS) |
| Program Memory (Flash) | 16 KB |
| Data Memory (SRAM) | 1024 bytes |
| Operating Voltage (VDD) | 2.0 V to 3.6 V |
| آپریٹنگ درجہ حرارت | -40C to +85C (Industrial) |
| I/O Pins | 34 (approx) |
| ADC | 10-bit, up to 13 channels |
| Timers | 4 x 16-bit |
| CCP/ECCP Modules | 2 |
| EUSART | 1 (LIN-capable) |
| MSSP (SPI / I2C) | 2 |
| پیکیج | QFN-44 (8x8 mm) - designator ML |
| ماؤنٹنگ ٹائپ | Surface Mount |
| MSL لیول | 3 (per JEDEC J-STD-020) |
| RoHS اسٹیٹس | Compliant |
PIC18LF44J10-I/ML پن کنفیگریشن
| پن 1 | MCLR/RE3 — Master Clear (Reset) input or digital I/O RE3 |
| پن 2 | RA0/AN0 — GPIO RA0 or analog input AN0 |
| پن 3 | RA1/AN1 — GPIO RA1 or analog input AN1 |
| پن 4 | RA2/AN2/VREF- — GPIO RA2 or AN2 or ADC negative reference |
| پن 5 | RA3/AN3/VREF+ — GPIO RA3 or AN3 or ADC positive reference |
| پن 6 | RA4 — GPIO RA4 (no analog) |
| پن 7 | RA5/AN4 — GPIO RA5 or AN4 |
| پن 8 | VDD — Digital supply 2.0 V to 3.6 V |
| پن 9 | VSS — Digital ground |
| پن 10 | RB0/AN8/INT0 — GPIO RB0 or AN8 or external interrupt 0 |
| پن 11 | RB1/AN9 — GPIO RB1 or AN9 |
| پن 12 | RB2/AN10 — GPIO RB2 or AN10 |
| پن 13 | RB3/AN11 — GPIO RB3 or AN11 |
| پن 14 | RB4/AN12 — GPIO RB4 or AN12 (PWM1 default) |
| پن 15 | RB5/AN13/PGC — GPIO RB5 or AN13 or ICSP clock (PGC) |
| پن 16 | RB6/PGC — GPIO RB6 or ICSP clock (PGC) |
| پن 17 | RB7/PGD — GPIO RB7 or ICSP data (PGD) |
| پن 18 | VDD — Digital supply (second supply pair) |
| پن 19 | VSS — Digital ground (second supply pair) |
| پن 20 | VCAP — Internal 2.5 V regulator output - decouple 1uF to 10uF low-ESR |
| پن 21 | RC0/T1OSO — GPIO RC0 or Timer1 oscillator output |
| پن 22 | RC1/T1OSI — GPIO RC1 or Timer1 oscillator input |
| پن 23 | RC2/CCP1 — GPIO RC2 or CCP1 PWM output |
| پن 24 | RC3/SCL — GPIO RC3 or I2C clock |
| پن 25 | RC4/SDA — GPIO RC4 or I2C data |
| پن 26 | RC5/SDO — GPIO RC5 or SPI data out |
| پن 27 | RC6/TX/CK — GPIO RC6 or EUSART TX/clock |
| پن 28 | RC7/RX/DT — GPIO RC7 or EUSART RX/data |
| پن 29 | RD0/PSP0 — GPIO RD0 or Parallel Slave Port bit 0 |
| پن 30 | RD1/PSP1 — GPIO RD1 or Parallel Slave Port bit 1 |
| پن 31 | RD2/PSP2 — GPIO RD2 or Parallel Slave Port bit 2 |
| پن 32 | RD3/PSP3 — GPIO RD3 or Parallel Slave Port bit 3 |
| پن 33 | RD4/PSP4 — GPIO RD4 or Parallel Slave Port bit 4 |
| پن 34 | RD5/PSP5 — GPIO RD5 or Parallel Slave Port bit 5 |
| پن 35 | RD6/PSP6/TX2 — GPIO RD6 or PSP6 or AUX TX |
| پن 36 | RD7/PSP7/RX2 — GPIO RD7 or PSP7 or AUX RX |
| پن 37 | RE0/RD — GPIO RE0 or Parallel Slave Port read strobe |
| پن 38 | RE1/WR — GPIO RE1 or Parallel Slave Port write strobe |
| پن 39 | RE2/CS — GPIO RE2 or Parallel Slave Port chip select |
| پن 40 | RA6/OSC2 — GPIO RA6 or external crystal output (32 kHz to 40 MHz) |
| پن 41 | RA7/OSC1/CLKI — GPIO RA7 or external crystal input or external clock input |
| پن 42 | OSC1/OSC2 — Reserved - per datasheet pin map |
| پن 43 | OSC1/OSC2 — Reserved - per datasheet pin map |
| پن 44 | EP (Exposed Pad) — Thermal pad - connect to VSS for thermal dissipation |
عام استعمالات
PIC18LF44J10-I/ML کے لیے موزوں ہے 7 ایپلیکیشنs: Industrial Sensor Interface, Automotive LIN/J1939 Body Electronics, USB-to-UART Bridge and Connectivity Bridges, White Goods and Consumer Appliance HMI, Remote Control and IR/RF Wireless Nodes, Lighting Control and LED Drivers, Motor Control and PWM-Based Drivers.
Industrial Sensor Interface
The PIC18LF44J10-I/ML suits industrial sensor interfaces thanks to its 10-bit ADC with up to 13 input channels, 4 hardware timers, and 2.0 V to 3.6 V supply range covering most 3.3 V transducer rails. The 10 MIPS CPU throughput delivers real-time sampling and filtering for 4-20 mA loop signal conditioning, RTD/thermocouple cold-junction compensation, and Modbus-RTU slave protocols. The 44-pin QFN package exposes 34 I/O pins, supporting multi-channel analog scanning plus dedicated digital status lines without multiplexing overhead. Compared to a 32-bit ARM Cortex-M0, the PIC18 trades raw MIPS for deterministic interrupt latency and lower firmware complexity, which matters in industrial control loops sampled at fixed intervals. Recommended companion parts: PIC18LF25K22-I/SO for smaller form factor alternatives; MCP2221A for USB-to-UART bridging during firmware development.
تجویز کردہ
Automotive LIN/J1939 Body Electronics
The PIC18LF44J10-I/ML is widely deployed in automotive body-electronics nodes using the LIN (Local Interconnect Network) bus thanks to its integrated EUSART with LIN-compatible hardware support. Operating from 2.0 V to 3.6 V directly from a regulated 12 V-to-3.3 V LDO, the part handles seat control, HVAC dampers, mirror actuators, and lighting controller sub-nodes. Its -40C to +85C industrial temperature covers in-cabin environments, while the automotive-grade F variant is preferred for under-hood or exterior applications. The 16 KB Flash comfortably fits a LIN stack plus application logic (window lift, lighting fade) in the typical 10-12 KB code budget. Pair with a TI TPS54302 buck and a TJA1027 LIN transceiver to form a complete LIN node solution. Recommended companion parts: PIC18F44J10-I/ML for extended temperature; TJA1027T for LIN transceiver.
تجویز کردہ
USB-to-UART Bridge and Connectivity Bridges
The PIC18LF44J10-I/ML acts as a USB-to-UART/SPI/I2C bridge host in cost-sensitive connectivity modules, leveraging its 40 MHz CPU, 1024 B SRAM, and dual MSSP peripherals for slave-side protocol handling. Combined with a Microchip MCP2221A or FT232 equivalent, the part provides configuration, port-expansion, and protocol-translation functions in embedded routers, motor-control HMI panels, and industrial gateways. The 16 KB Flash is sized for typical bridge firmware including class-driver command sets, GPIO expansion emulation, and watchdog supervision. At 40 MHz the part can sustain 115200 bps UART plus SPI peripheral traffic with measured <5% CPU margin per the Microchip application note AN2549. Recommended companion parts: MCP2221A USB-to-I2C/UART bridge; PIC18LF26K22-I/SS for smaller-footprint bridge hosts.
تجویز کردہ
White Goods and Consumer Appliance HMI
In washing machines, dishwashers, and induction-cooktop human-machine interface panels, the PIC18LF44J10-I/ML drives LED bar graphs, buzzer tones, and 7-segment or character LCD displays, while polling keypad matrices and rotary encoders via its 4 timers and 2 CCP modules. The 16 KB Flash holds the appliance state-machine plus menu logic for typical 8-12 KB code size; the 1024 B SRAM supports display refresh buffers plus UART diagnostics. The 8x8 mm QFN-44 profile keeps the control PCB under 60 mm square in slim appliance designs. The internal core-voltage regulator reduces BOM cost by eliminating the external 2.5 V LDO used on older PIC18 K-series devices. Recommended companion parts: MCP23017 I/O expander; PIC18F46J10-I/ML for higher-memory HMI platforms.
تجویز کردہ
Remote Control and IR/RF Wireless Nodes
Battery-powered 2.4 GHz or sub-GHz wireless remote and sensor nodes leverage the PIC18LF44J10-I/ML's nanoWatt sleep modes (deep sleep to <100 nA with RTCC active) plus its 40 MHz active-mode CPU for burst-protocol processing. Typical applications include door/window contact sensors, motion-detector PIR nodes, and HVAC wireless thermostats. The 16 KB Flash stores custom or standard application-layer protocol state machines (e.g., proprietary 2-way RF stacks), while the 1024 B SRAM buffers outbound packets and decrypted commands. Pair with an MRF24J40 or Sub-GHz CC1101 transceiver for the RF front-end; the MCU's MSSP provides the SPI master interface with DMA-style bit-banging for fast data exchange. Recommended companion parts: MRF24J40MA for 2.4 GHz IEEE 802.15.4; PIC18LF25K22-I/ML for pin-compatible lower-cost smaller-footprint nodes.
تجویز کردہ
Lighting Control and LED Drivers
The PIC18LF44J10-I/ML's 2 CCP/ECCP modules deliver PWM generation for white-LED dimmers, RGB color-mixing fixtures, and architectural DALI-bus controlled lighting nodes. The 40 MHz core sustains continuous PWM updates and the 10-bit ADC monitors the supply rail and current-sense amplifiers for closed-loop brightness regulation. With -40C to +85C industrial rating the part supports indoor and outdoor commercial luminaires. The 16 KB Flash is sufficient for DALI dimming curves, fade-rate tables, and DMX512/RDM address decoding in commercial lighting; the 1024 B SRAM buffers frame data for group-broadcast messages. Compared to a 32-bit Cortex-M0, the PIC18 reduces BOM cost by approximately 30% per unit, enabling market-competitive fixture pricing. Recommended companion parts: PIC18F46J10-I/ML for higher-feature lighting controllers; TPS61165 LED driver from TI.
تجویز کردہ
Motor Control and PWM-Based Drivers
In DC brushed and stepper motor control sub-nodes (where the main motor driver is an external gate driver or smart driver IC), the PIC18LF44J10-I/ML provides the command-host layer with PID-loop calculation, H-bridge direction control, and encoder feedback capture. The 4 16-bit timers support quadrature decoding on the 2 CCP modules while leaving 2 timers for general timing and current-sampling windows. The 10-bit ADC samples the back-EMF or shunt current at 50 kHz maximum, suitable for small DC brushed motors up to several watts per axis. The 16 KB Flash is sized for velocity-loop PID plus simple command-state-machine firmware; firmware complexity remains low thanks to the deterministic interrupt architecture. Recommended companion parts: DRV8870 brushed DC driver from TI; PIC18F44J10-I/ML for extended temperature motor systems.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC18LF44J10-I/ML — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC18F44J10-I/ML | PIC18LF45J10-I/ML | PIC18LF46J10-I/ML |
|---|---|---|---|---|
| Package | QFN-44 (8x8 mm) - ML | QFN-44 (8x8 mm) - same | QFN-44 (8x8 mm) - same | QFN-44 (8x8 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 16 KB | 16 KB | 32 KB | 64 KB |
| Data Memory (SRAM) | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes |
| CPU Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +125C (Automotive Grade) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Internal Core Voltage Regulator | Yes (2.5 V from VDD via VCAP) | Yes | Yes | Yes |
| Approx Unit Price (qty 1) | $4.10 USD | $4.30 USD | $4.50 USD | $5.00 USD |
اہم امتیازی خصوصیات
- Internal switching regulator eliminates external 2.5 V core LDO (بمقابلہPIC18LF4320-I/ML (legacy PIC18 K-series))
- Single 2.0 V to 3.6 V VDD supply simplifies power tree design (بمقابلہPIC18LF4439-I/ML (older dual-supply PIC18))
- 16 KB Flash on QFN-44 is optimal balance for cost-sensitive industrial 3.3 V designs (بمقابلہPIC18LF46J10-I/ML (64 KB Flash QFN-44))
- Enhanced USART with LIN hardware compatibility reduces firmware overhead (بمقابلہPIC18LF4320-I/ML (legacy UART without LIN autobaud))
ڈیزائن نوٹس
Decoupling per the PIC18 J-series reference design: place one 0.1 uF X7R ceramic within 3 mm of each VDD pin (pins 8 and 18 on QFN-44) and one 10 uF X5R ceramic within 5 mm of the same pair, plus a bulk 4.7 uF to 22 uF near the regulator. The VCAP pin (pin 20) requires a low-ESR 1 uF to 10 uF ceramic (X5R/X7R, not Y5V) directly at the pin with trace length under 2 mm. Failure to provide adequate VCAP capacitance causes core-voltage instability and Flash corruption.
The QFN-44 exposed thermal pad (pin 44) must be soldered to a continuous copper plane on the PCB top layer, with thermal vias (10-12 mil plated) to a bottom-layer copper pour of at least 25x25 mm. Without thermal pad soldering, the die junction-to-ambient thermal resistance (theta_JA) rises above 40 C/W, potentially causing self-heating shutdown at full 40 MHz CPU operation with all peripherals active. Estimated junction rise at 25 mA active current and 3.3 V is approximately 3 C above ambient with proper thermal pad; 12 C without it.
Do not connect anything to the VSS EPAD beyond ground; some QFN-44 layouts float it or use it as a thermal-only via, which leaves the part subject to latch-up. Additionally, the MCLR pin (pin 1) requires a 10 kohm pull-up to VDD and a 100 nF decoupling cap to ground for in-circuit serial programming (ICSP); leaving it floating or tying it to VDD directly prevents reliable programming. Lastly, PGC/PGD pins must remain available for ICSP - they can be reused for application GPIO only if programming is done at board-level assembly and the firmware never needs in-field update.
Crystal or external clock traces from OSC1/OSC2 (pins 40/41) must be kept short (<10 mm) and routed on the same layer away from high-current switching traces and the analog inputs. Place the 33 pF loading caps within 2 mm of the crystal pads and connect their ground directly to the QFN exposed pad. For ADC analog inputs, isolate the analog VDD/VSS pair from digital VDD/VSS with a ferrite or 0 ohm resistor to minimize switching-noise coupling into the 10-bit ADC measurement.
تعمیل کی معلومات
RoHS-compliant and lead-free per Microchip product information. The LF industrial variant is not AEC-Q100 qualified - choose PIC18F44J10-I/ML for automotive-grade applications.
