PIC18F4450-I/PT Microchip Integrated Circuit (Quad Flat Packages) In Stock
Microchip PIC18F4450 is an 8-bit PIC18 microcontroller with 16 KB Flash, 48 MHz max clock, and full-speed USB 2.0 support in a TQFP-44 package. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat Packages
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F4450-I/PT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.3824(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
- Full-speed USB 2.0 device controller with on-chip transceiver, eliminating external USB bridge ICs
- 8-bit PIC18 core running up to 48 MHz with 16 KB Flash and 768 bytes of SRAM for compact firmware
- TQFP-44 surface-mount package enabling high-density PCB integration with 35 I/O pins
Applications
PIC18F4450-I/PT is ideal for USB peripheral devices such as HID keyboards, mice, and custom lab instruments that need a cost-effective 8-bit microcontroller with native USB. It is also used in educational and hobbyist development boards for PIC-family learning, and in battery-operated embedded gadgets where its low-power modes and 48 MHz performance balance compute needs against power budgets.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TQFP-44 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Has ADC | YES |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC18 |
| Clock Frequency-Max | 48MHz |
| 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 | 34 |
| Number of Serial I/Os | 1 |
| Number of Timers | 5 |
| 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) | 768 |
| ROM (words) | 16384 |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Speed | 48MHz |
| Supply Current-Max | 50mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 4.2V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.8mm |
| Terminal Position | QUAD |
| 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 1 |
| 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 PIC18F4450-I/PT:
40 PIN, 160K PIC WITH FULL SPEED USB & 32KB ENH FLASH, & 12 BIT ADC OPTION
Frequently Asked Questions
How fast can PIC18F4450-I/PT run, and how does that support USB full-speed operation?
The PIC18F4450 operates at up to 48 MHz using an internal PLL from a 4 MHz or 8 MHz crystal. This 48 MHz clock directly satisfies the USB full-speed 12 Mbps timing requirement without an external oscillator multiplier, simplifying BOM and reducing component count on the board.
Which designs benefit from PIC18F4450-I/PT compared to a PIC18F4550 with more memory?
PIC18F4450 carries 16 KB Flash and 768 bytes RAM while PIC18F4550 offers 32 KB Flash and 2 KB RAM. When a HID or CDC USB application fits within 16 KB, PIC18F4450 provides the same USB 2.0 full-speed interface at a lower unit cost, making it the economic choice for high-volume consumer USB accessories produced in quantities above 10,000 units.
For a compact USB data-acquisition board, how small a footprint does PIC18F4450-I/PT require?
The TQFP-44 package measures 10 mm x 10 mm with 0.8 mm pin pitch, occupying approximately 100 mm² of PCB area. Its 35 available I/O lines and built-in USB transceiver allow a data-acquisition front end with analog inputs, SPI sensor, and USB readout to fit on a single 50 mm x 50 mm board.
What is the supply voltage range for PIC18F4450-I/PT in portable battery designs?
The device operates from 4.2 V down to 2.0 V, with USB functionality active from 4.2 V to 4.5 V using the built-in USB transceiver. The extended 2.0 V to 5.5 V general operating range allows integration with both single-cell LiPo supplies and standard 3.3 V or 5 V regulated rails without level-shifting circuitry.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $4.6000 | $4.60 |
| 160+ | $4.4900 | $718.40 |
| 205+ | $4.3824 | $898.39 |
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