PIC18F43K20-I/ML Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
PIC18F43K20-I/ML is an 8-bit PIC18 microcontroller from Microchip with 8 KB Flash, 36 I/O pins, 64 MHz max clock, and XLP low-power technology operating from as low as 1.8 V. Built-in ADC and wide I/O count suit battery-powered control designs. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F43K20-I/ML Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.0100(MOQ 5)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- XLP ultra-low-power technology with 1.8 V minimum supply at 16 MHz, enabling battery-operated IoT and portable control applications
- 64 MHz maximum clock frequency with 8 KB Enhanced Flash for high-performance 8-bit control tasks with ample code storage
- 36 I/O pins in a compact 44-pin QFN package providing high I/O density for sensor interfaces, displays, and communication peripherals
Applications
The PIC18F43K20-I/ML is designed for low-power embedded control applications including energy harvesting devices, portable medical instruments, and home automation nodes that require a rich peripheral set from a compact IC. Its XLP architecture enables operation at 1.8 V supply with reduced sleep current, extending battery life in wireless sensor nodes and remote controls. With 36 I/O lines and an integrated ADC, it handles multi-channel sensor reading, display driving, and communication tasks in a single 44-pin QFN footprint.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | QFN-44 |
| Factory Lead Time | 1Week |
| YTEOL | 8 |
| Has ADC | YES |
| Additional Feature | ALSO OPERATES AT 1.8V MIN SUPPLY FOR 16 MHZ AND OPERATES AT 2V FOR 20 MHZ |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC18 |
| Clock Frequency-Max | 64MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | S-PQCC-N44 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 3 |
| Number of I/O Lines | 36 |
| Number of Serial I/Os | 1 |
| Number of Timers | 6 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC44,.31SQ,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) | 512 |
| ROM (words) | 8192 |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Speed | 64MHz |
| Supply Current-Max | 15mA |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.65mm |
| Terminal Position | QUAD |
| 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 | 3A991.A.2 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the minimum supply voltage for the PIC18F43K20-I/ML and at what clock speed does it run at that voltage?
The PIC18F43K20-I/ML operates at a minimum supply voltage of 1.8 V, at which it supports clock speeds up to 16 MHz. At 2 V supply it can run at up to 20 MHz, and it reaches its full maximum clock of 64 MHz at higher supply voltages. This scalable voltage-frequency relationship allows designers to balance power consumption against processing speed depending on battery voltage and task requirements.
How many I/O pins does PIC18F43K20-I/ML provide, and how does it compare to 28-pin PIC18 devices for I/O-intensive designs?
The PIC18F43K20-I/ML provides 36 I/O pins in a 44-pin QFN package, compared to approximately 25 I/O pins available on a typical 28-pin DIP or SOIC PIC18 device. This additional 11 I/O pins allows direct connection of a 4-bit LCD interface, an SPI display, multiple UART channels, and several discrete sensors simultaneously without requiring external I/O expander ICs, which reduces BOM cost and simplifies firmware architecture.
Does PIC18F43K20-I/ML include an ADC, and what sensor types can it digitize directly?
Yes, the PIC18F43K20-I/ML includes a built-in ADC, which can directly digitize analog signals from resistive sensors, thermistors, photoresistors, and voltage dividers. The 8-bit PIC18 core paired with the integrated ADC allows the microcontroller to acquire analog data, process it, and output a control signal within the same device, eliminating the need for an external ADC IC in most sensor monitoring applications operating within the device's supply voltage range.
What are the Flash memory and package specifications of PIC18F43K20-I/ML, and how do they affect firmware size and board density?
The PIC18F43K20-I/ML contains 8 KB of Enhanced Flash program memory, which supports approximately 4,000 instructions of PIC18 code — sufficient for most control and communication-focused firmware. The 44-pin QFN package measures approximately 8 mm x 8 mm, enabling dense PCB placement alongside other SMD components. For applications requiring more code space, the pin-compatible PIC18F46K20 offers 64 KB Flash in the same QFN-44 footprint without board redesign.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 5+ | $2.7200 | $13.60 |
| 25+ | $2.6200 | $65.50 |
| 90+ | $2.4400 | $219.60 |
| 100+ | $2.3100 | $231.00 |
| 1000+ | $2.1100 | $2110.00 |
| 5000+ | $2.0100 | $10050.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”