PIC18LF44K22-E/MV - 8-Bit 48MHz XLP MCU 16KB Flash | Microchip
MPN: PIC18LF44K22-E/MV ✓ פעילPIC18LF44K22-E/MV סקירה
A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, and integrated peripherals such as timers, communication interfaces, and analog-to-digital converters. The PIC18LF44K22 belongs to the PIC18LF family of low-voltage (LF) variants, designed for operation from 2.0V to 5.5V (F variants support 2.3V to 5.5V). These MCUs sit within the broader 8-bit PIC family, which evolved from Microchip's original Harvard-architecture microcontrollers, and are widely deployed in consumer, industrial, and low-power embedded applications.
Key features include 34 I/O pins, a 12-bit ADC with up to 28 channels, two comparators, two Enhanced USART modules, two MSSP (SPI/I2C) ports, two CCP and three ECCP PWM modules with auto-shutdown, and the HLVD (High/Low-Voltage Detect) module for brown-out monitoring. The nanoWatt XLP technology delivers typical sleep currents below 100 nA, making it well-suited to battery-powered designs.
The architecture combines a modified Harvard bus with 31-level hardware stack and 8x8 hardware multiply, supporting up to 16 MIPS throughput. Internal oscillator options provide system clock flexibility without external crystals, simplifying BOM and reducing board area in space-constrained designs.
Typical applications include low-power sensor nodes, battery-powered handheld instruments, USB peripherals, motor-control subsystems, and industrial control modules. The wide operating voltage range allows direct connection to 3.3V or 5V rails, simplifying power-tree design. For designs requiring automotive qualification, the -E/MV temperature grade (-40C to +125C) supports extended-environment deployment.
When designing with the PIC18LF44K22, allocate at least one decoupling capacitor pair per VDD/AVDD pin pair, place the exposed pad with a continuous ground plane for thermal dissipation, and configure the configuration bits correctly to enable the chosen oscillator mode. This page consolidates distributor pricing, drop-in alternatives, and practical design guidance not found in the manufacturer datasheet alone.
חלופות תחליף ישיר עבור PIC18LF44K22-E/MV — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC18LF44K22-E/MV (אותו גורם צורה וטביעת רגל) — שונים ב Package, ADC, Core, Maximum CPU Frequency, Operating Temperature.
PIC18F44K22-E/MV
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC18LF44K22T-I/MV
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18LF45K22-E/MV
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18LF44K22-I/MV
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
PIC18F45K22-I/MV
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18LF44K22-E/MV דירוגים מרביים ומאפיינים חשמליים
| Core | PIC18 8-bit RISC |
| Instruction Set Width | 16-bit |
| Program Memory | 16 KB Flash |
| Data Memory (SRAM) | 768 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 48 MHz (16 MIPS) |
| Operating Voltage Range | 2.0 V to 5.5 V |
| I/O Pins | 34 |
| ADC | 12-bit, up to 28 channels |
| Comparators | 2 |
| USART | 2 Enhanced |
| MSSP (SPI/I2C) | 2 |
| CCP / ECCP Modules | 2 CCP + 3 ECCP |
| Timers | 8-bit/16-bit mixed (Timer0-6) |
| HLVD Module | Yes (High/Low-Voltage Detect) |
| nanoWatt XLP | Yes (sleep current <100 nA typical) |
| Internal Oscillator | 31 kHz to 16 MHz selectable |
| טמפרטורת פעולה | -40C to +125C (E grade) |
| מארז | 40-UQFN (5x5 mm) with exposed pad (MV) |
| סוג הרכבה | Surface Mount |
| רמת MSL | 1 |
| סטטוס RoHS | Compliant (lead-free) |
תצורת פינים של PIC18LF44K22-E/MV
| פין 1 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| פין 2 | RA3/AN3/VREF+ — Port A bit 3 / Analog input 3 / ADC reference positive |
| פין 3 | RA4/AN4 — Port A bit 4 / Analog input 4 |
| פין 4 | RA5/AN5/SS2/HLVDIN — Port A bit 5 / Analog input 5 / SPI2 slave select / HLVD input |
| פין 5 | RA6/OSC2/CLKOUT — Port A bit 6 / Crystal oscillator output / Clock output |
| פין 6 | RA7/OSC1/CLKIN — Port A bit 7 / Crystal oscillator input / External clock input |
| פין 7 | VDD — Digital supply voltage (2.0V-5.5V) |
| פין 8 | VSS — Digital ground |
| פין 9 | RB0/INT0/FLT0 — Port B bit 0 / External interrupt 0 / PWM fault input |
| פין 10 | RB1/INT1 — Port B bit 1 / External interrupt 1 |
| פין 11 | RB2/INT2/CTED1 — Port B bit 2 / External interrupt 2 / CTMU edge 1 |
| פין 12 | RB3/CTED2 — Port B bit 3 / CTMU edge 2 |
| פין 13 | RB4 — Port B bit 4 |
| פין 14 | RB5 — Port B bit 5 |
| פין 15 | RB6/PGC — Port B bit 6 / ICSP clock (programming/debug) |
| פין 16 | RB7/PGD — Port B bit 7 / ICSP data (programming/debug) |
| פין 17 | VDD — Digital supply voltage |
| פין 18 | VSS — Digital ground |
| פין 19 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator output / Timer1 clock input |
| פין 20 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator input / CCP2 |
| פין 21 | RC2/CCP1 — Port C bit 2 / CCP1 |
| פין 22 | RC3/SCK1/SCL1 — Port C bit 3 / SPI1 clock / I2C1 clock |
| פין 23 | RC4/SDI1/SDA1 — Port C bit 4 / SPI1 data in / I2C1 data |
| פין 24 | RC5/SDO1 — Port C bit 5 / SPI1 data out |
| פין 25 | RC6/TX1/CK1 — Port C bit 6 / USART1 TX / USART1 clock |
| פין 26 | RC7/RX1/DT1 — Port C bit 7 / USART1 RX / USART1 data |
| פין 27 | RD0 — Port D bit 0 |
| פין 28 | RD1 — Port D bit 1 |
| פין 29 | RD2 — Port D bit 2 |
| פין 30 | RD3 — Port D bit 3 |
| פין 31 | RD4 — Port D bit 4 |
| פין 32 | RD5/P1B — Port D bit 5 / Enhanced PWM1 output B |
| פין 33 | RD6/P1C — Port D bit 6 / Enhanced PWM1 output C |
| פין 34 | RD7/P1D — Port D bit 7 / Enhanced PWM1 output D |
| פין 35 | VSS — Digital ground |
| פין 36 | VDD — Digital supply voltage |
| פין 37 | RE0/AN6 — Port E bit 0 / Analog input 6 |
| פין 38 | RE1/AN7 — Port E bit 1 / Analog input 7 |
| פין 39 | RE2/AN8 — Port E bit 2 / Analog input 8 |
| פין 40 | RE3/MCLR — Port E bit 3 / Master clear (reset, active-low) |
יישומים טיפוסיים
PIC18LF44K22-E/MV מתאים עבור 6 יישוםs: Battery-Powered IoT Sensor Nodes, Handheld Medical and Wellness Devices, Industrial Control Modules, USB Peripherals and HID Devices, Motor Control and PWM Drives, Consumer Appliances and Smart Home Devices.
Battery-Powered IoT Sensor Nodes
The PIC18LF44K22-E/MV is ideal for battery-powered IoT sensor nodes thanks to its nanoWatt XLP technology with typical sleep current below 100 nA, allowing multi-year battery life from a single coin cell. The 2.0V minimum supply supports operation down to single-cell Li-ion near end-of-discharge. The 12-bit ADC with 28 channels interfaces directly to environmental sensors (temperature, humidity, pressure), and the 2 MSSP ports drive I2C/SPI sensor buses. Two USARTs enable UART/LoRa or Bluetooth HCI bridging. Combined with 16 KB Flash for sensor-fusion firmware and 768 B SRAM for buffering, it suits unattended sensor deployments where maintenance windows are measured in years.
מומלץ
Handheld Medical and Wellness Devices
The PIC18LF44K22-E/MV fits handheld medical devices such as blood-pressure monitors, glucose meters, and pulse oximeters, where low power, compact packaging, and reliable peripheral integration matter most. The 12-bit ADC drives accurate measurements of analog biosignals, while the nanoWatt XLP modes extend battery life in intermittent-use products. The 40-pin UQFN (5x5 mm) provides 34 I/O for LCDs, keypads, and BLE/Wi-Fi companion modules. The HLVD module supervises battery voltage and triggers safe shutdown below 2.0V. With Microchip's MPLAB X ecosystem and validated BSPs, medical firmware developers can meet IEC 62304 software-lifecycle requirements quickly.
מומלץ
Industrial Control Modules
The PIC18LF44K22-E/MV is well-suited to industrial control modules like sensor interface boards, low-power PLCs, and process transmitters, with its -40C to +125C operating temperature supporting harsh environments. The 2.0V-5.5V wide input range accepts 24V industrial rails after regulation, while 34 I/O pins accommodate multi-channel analog inputs and digital control outputs. Three ECCP PWM modules with auto-shutdown drive solenoids and brushed DC motors safely, and the HLVD monitors brown-out conditions. The 16 KB Flash supports Modbus or proprietary industrial protocols, with 768 B SRAM enough for command buffering at typical polling rates.
מומלץ
USB Peripherals and HID Devices
The PIC18LF44K22-E/MV serves USB peripherals and HID devices such as custom keyboards, programmable controllers, and USB-to-UART bridges. While it lacks native USB, the MSSP SPI port pairs with external USB interface ICs to deliver full-speed USB connectivity, and the 48 MHz clock provides sufficient throughput for low-speed HID class traffic. The 16 KB Flash holds USB stack plus HID descriptor tables, and the 2 USART modules enable USB-to-UART bridging. Low sleep currents support bus-powered devices that must consume less than 100 mA from the USB port.
מומלץ
Motor Control and PWM Drives
The PIC18LF44K22-E/MV drives small brushed DC motors, solenoids, and stepper sub-systems in appliances and industrial actuators. Three ECCP PWM modules with hardware auto-shutdown provide safe complementary outputs with dead-band control, and two CCP modules add further timing channels. The 48 MHz clock supports high-resolution PWM at low motor speeds for torque ripple reduction. The 2 comparators enable current-limit protection with hardware trip, and the 12-bit ADC reads back motor current/voltage for closed-loop control. The compact UQFN-40 footprint fits into space-constrained motor-control PCBs.
מומלץ
Consumer Appliances and Smart Home Devices
The PIC18LF44K22-E/MV is a strong fit for consumer appliances such as coffee machines, washing-machine sub-boards, and smart-home hubs where cost and power efficiency dominate. The 2.0V-5.5V range accepts both 3.3V and 5V rails, the nanoWatt XLP modes extend standby life, and 34 I/O drive user interfaces, keypads, LEDs, and simple displays. Two I2C/SPI ports connect to environmental sensors and EEPROMs. The 16 KB Flash holds application firmware plus safety routines, while the E temperature grade supports hot-environment enclosures near heat-generating components.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC18LF44K22-E/MV — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC18F44K22-E/MV | PIC18LF45K22-E/MV | PIC18F45K22-I/MV |
|---|---|---|---|---|
| Package | 40-UQFN (5x5 mm) MV | 40-UQFN (5x5 mm) MV - same | 40-UQFN (5x5 mm) MV - same | 40-UQFN (5x5 mm) MV - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB | 16 KB | 32 KB | 32 KB |
| Operating Voltage Range | 2.0 V to 5.5 V | 2.3 V to 5.5 V | 2.0 V to 5.5 V | 2.3 V to 5.5 V |
| Max CPU Speed | 48 MHz / 16 MIPS | 48 MHz / 16 MIPS | 48 MHz / 16 MIPS | 48 MHz / 16 MIPS |
| I/O Pins | 34 | 34 | 36 | 36 |
| SRAM | 768 B | 768 B | 1.5 KB | 1.5 KB |
| Temperature Grade | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) | -40C to +85C (I) |
| nanoWatt XLP | Yes | Yes | Yes | Yes |
מבדילים עיקריים
- Lowest minimum supply voltage in the family (לעומתPIC18F44K22-E/MV)
- Smaller package than the higher-memory K22 family (לעומתPIC18LF45K22-E/MV)
- Extended temperature grade for harsh environments (לעומתPIC18F44K22-I/MV (would-be variant))
הערות תכנון
Configure nanoWatt XLP modes carefully for lowest sleep current. Use the RTC-driven wake from Sleep mode with Timer1 running from the internal 31 kHz LF oscillator. Disable unused peripherals by clearing their enable bits, and turn off the ADC by clearing the ADON bit before entering Sleep. The HLVD module must be disabled in Sleep if not needed, as it draws additional current. Use peripheral pin select to assign functions only to required pins.
The 40-pin UQFN package has an exposed thermal pad that MUST be soldered to a ground copper pour for both electrical grounding and thermal dissipation. Without proper pad soldering, the junction temperature can rise 30-40C above ambient under normal load. For continuous high-MIPS operation, use at least 1 sq inch of 2-oz copper on top and bottom layers, stitched together with thermal vias to maximize heat spreading.
Place a 100 nF decoupling capacitor within 5 mm of every VDD pin pair (pins 7-8, 17-18, 35-36). Add a 10 uF bulk capacitor near the IC and a ferrite bead if switching regulators are nearby. Keep the crystal traces (RA6/RA7) short and surrounded by a grounded guard ring to reduce EMI susceptibility. The MCLR pin (RE3) requires a 10 kohm pull-up to VDD for normal operation.
Configuration bits control oscillator mode, watchdog timer, low-voltage programming, and code protection. Incorrect configuration bits can brick the device or cause unexpected reset behavior. Always review CONFIG1H through CONFIG4H in code and verify in MPLAB X that the configuration matches your design intent. Enable the watchdog timer for safety-critical applications to recover from firmware faults.
The MSSP modules in I2C mode require external pull-up resistors (typically 2.2k-10k ohm depending on bus speed and capacitance). For I2C Fast Mode (400 kHz), use 2.2k-4.7k ohm pull-ups. The MSSP clock stretching feature can stall I2C transactions; disable it if the slave device does not support it. For SPI at high speeds, use series resistors (22-33 ohm) on the clock and data lines to dampen ringing on long traces.
מידע על תאימות
RoHS compliant and lead-free per Microchip product page. Not AEC-Q100 qualified (commercial/industrial grade only). Halogen-free status not stated in the verified data - set to unknown per Data Authenticity Rules.
