PIC18F46K20-I/PT Microchip Integrated Circuit (Quad Flat Packages) In Stock
Microchip PIC18F46K20 is an 8-bit microcontroller with 64KB Flash, 3,936 bytes RAM, 44-pin TQFP package, operating at up to 64 MHz, 36 I/O pins, and nanoWatt XLP technology for ultra-low-power designs.
- Manufacturer
- Microchip
- Package
- Quad Flat Packages
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F46K20-I/PT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.6900(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
- 64KB Flash program memory with self-write capability for field firmware updates
- nanoWatt XLP technology with sleep current as low as 9 nA for battery-operated designs
- Up to 64 MHz operation with internal 16 MHz oscillator, supporting 1.8V to 5.5V supply
- Enhanced CCP, MSSP (SPI/I2C), EUSART, and 13-channel 10-bit ADC for rich peripheral integration
- 44-pin TQFP package with 36 GPIO pins enabling dense PCB layouts
Applications
The PIC18F46K20 is well-suited for embedded control applications requiring low power consumption, such as battery-powered sensor nodes, home automation controllers, and industrial data loggers. Its rich peripheral set including SPI, I2C, UART, and a 10-bit ADC makes it ideal for interfacing with sensors, displays, and communication modules. The nanoWatt XLP sleep modes enable designs that operate for years on coin cell batteries.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TQFP-44 |
| Factory Lead Time | 3Weeks |
| 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-PQFP-G44 |
| 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 | TQFP44,.39SQ,31 |
| Package Shape | SQUARE |
| Package Style | FLATPACK, THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 3936 |
| ROM (words) | 65536 |
| 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 | GULL WING |
| Terminal Pitch | 0.8mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Quad Flat Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | 3A991.A.2 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Philippines, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC18F46K20-I/PT:
Microchip Technology Inc 44 PIN, 64 KB ENH FLASH, 3936 RAM, 36 I/O
Frequently Asked Questions
What is the maximum clock frequency of the PIC18F46K20, and how does it affect performance?
The PIC18F46K20 operates at up to 64 MHz, executing most instructions in a single cycle at 16 MIPS. This provides sufficient throughput for real-time control loops, signal processing, and communication protocol handling in 8-bit embedded applications.
How low can the PIC18F46K20 supply voltage go, and what are the operating current implications?
The PIC18F46K20 operates from 1.8V minimum at 16 MHz and from 2V at 20 MHz, supporting up to 5.5V. Sleep current can be as low as 9 nA with nanoWatt XLP technology, making it excellent for battery-powered designs targeting multi-year operation.
Which communication interfaces does the PIC18F46K20 support for sensor integration?
The PIC18F46K20 includes MSSP modules supporting both SPI and I2C protocols, plus an Enhanced USART for RS-232 or RS-485. The 13-channel 10-bit ADC handles up to 13 analog inputs simultaneously, covering most sensor interfacing requirements on a single chip.
When is the PIC18F46K20 a better fit than the PIC18F45K20 for a new design?
The PIC18F46K20 offers 64KB Flash compared to the PIC18F45K20's 32KB, making it the better choice when firmware size exceeds 32KB or future feature growth is expected. Both share the 44-pin TQFP package and pin-compatible layout, simplifying board re-use without PCB redesign.
For a compact industrial sensor PCB, how does the TQFP-44 package affect board area?
The TQFP-44 package measures 10 mm x 10 mm with 0.8 mm pin pitch, providing 36 I/O pins in a compact footprint suitable for high-density PCB layouts. This makes it practical for industrial sensor modules, handheld instruments, and space-constrained embedded control boards.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.9940 | $2.99 |
| 25+ | $2.9670 | $74.17 |
| 100+ | $2.6900 | $269.00 |
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