PIC18LF44K22-I/ML Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
8-bit PIC18 microcontroller with 16 KB flash, 768 bytes RAM, and nanoWatt XLP low-power technology operating from 1.8 V at 20 MHz. Integrates ADC and DAC channels for mixed-signal sensing in a QFN package. Suitable for battery-operated consumer and industrial embedded designs.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- PIC18LF44K22-I/ML Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.0684(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- nanoWatt XLP technology enabling sub-microamp sleep current for years-long coin-cell battery life in wireless sensors
- 1.8 V minimum supply operation at 20 MHz supporting direct use with single lithium coin cells or two AA batteries
- 16 KB flash with 64 MHz max clock providing ample code space for RTOS-free embedded control at low cost
- Integrated ADC and DAC channels enabling mixed-signal designs without external converter ICs in QFN-44 footprint
Applications
The PIC18LF44K22-I/ML suits battery-powered wireless sensor nodes, smart meters, and remote monitoring devices where its nanoWatt XLP sleep current extends battery life to several years from a coin cell. Its 1.8 V minimum supply and 64 MHz maximum clock make it compatible with energy harvesting power supplies and low-voltage 3.3 V system rails commonly used in IoT applications. The device also fits home automation controllers and appliance interfaces requiring a low-pin-count 8-bit MCU with on-chip ADC and DAC.
Specifications
| Pbfree Code | Yes |
| YTEOL | 7.2 |
| Has ADC | YES |
| Additional Feature | ALSO OPERATES 1.8 V MINIMUM SUPPLY AT 20 MHZ |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC18 |
| Clock Frequency-Max | 64MHz |
| DAC Channels | YES |
| DMA Channels | NO |
| JESD-30 Code | S-PQCC-N44 |
| JESD-609 Code | e3 |
| Number of I/O Lines | 36 |
| On Chip Program ROM Width | 16 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC44,.32SQ,25 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 768 |
| ROM (words) | 8192 |
| ROM Programmability | FLASH |
| Speed | 64MHz |
| Supply Current-Max | 8.5mA |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.65mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC18LF44K22-I/ML:
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 64MHz, CMOS, PQCC44
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 64MHz, CMOS, PQCC44
Frequently Asked Questions
How low can the PIC18LF44K22-I/ML supply voltage go while still maintaining reliable operation?
The PIC18LF44K22-I/ML operates from a minimum supply of 1.8 V at up to 20 MHz clock frequency, making it directly compatible with a single lithium coin cell or nearly discharged alkaline AA cells. This low-voltage capability is central to the nanoWatt XLP design philosophy, allowing the MCU to continue executing firmware even as battery voltage drops well below the 2 V threshold that would shut down standard 3.3 V microcontrollers.
What differentiates the PIC18LF44K22-I/ML from standard PIC18 devices for ultra-low-power applications?
The 'LF' designation in PIC18LF44K22-I/ML indicates the nanoWatt XLP variant, which combines deep-sleep modes with sub-1 µA quiescent current, a wake-on-change interrupt on all I/O pins, and multiple low-power oscillator options. Standard PIC18 devices may draw 10–50 µA in sleep, so the LF variant can extend battery life by 10x or more in applications that spend most time sleeping, such as wireless alarm sensors with 10-year coin-cell life requirements.
For a 44-pin QFN design, how many ADC channels and DAC outputs does the PIC18LF44K22-I/ML provide?
In the 44-pin QFN (ML) package, the PIC18LF44K22-I/ML provides multiple ADC input channels with 10-bit resolution and at least 1 DAC output, enabling mixed-signal designs without external converter chips. The exact channel count depends on pin multiplexing, but the device supports enough analog inputs for typical sensor fusion tasks such as reading temperature, pressure, and light sensors simultaneously while outputting a reference signal from the on-chip DAC.
When would the PIC18LF44K22-I/ML be preferred over a 32-bit ARM Cortex-M0 MCU in a new design?
The PIC18LF44K22-I/ML is preferred when the application requires 8-bit simplicity with extremely low sleep current below 1 µA, a mature toolchain with decades of existing PIC18 library support, and a cost per unit under $1 in volume. For control loops running at 20 MHz or below, the 8-bit PIC18 core is adequate and consumes less power than most 32-bit ARM Cortex-M0 devices, which typically idle at 5–20 µA. The QFN-44 package also matches many existing PCB layouts already designed for PIC18 variants.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $6.0480 | $6.05 |
| 3+ | $4.0320 | $12.10 |
| 7+ | $3.0240 | $21.17 |
| 20+ | $2.2982 | $45.96 |
| 50+ | $2.1603 | $108.02 |
| 150+ | $2.0684 | $310.26 |
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