PIC18F4455-I/PT Microchip Integrated Circuit (Quad Flat Packages) In Stock
Microchip PIC18F4455-I/PT is an 8-bit PIC18 microcontroller with 24 KB Flash memory, 2 KB SRAM, and USB Full-Speed interface, running at up to 48 MHz from a 2 V to 5.5 V supply. It integrates a 10-bit ADC, CCP modules, and UART/SPI/I2C peripherals in a 44-pin TQFP package. Available with worldwide shipping from authorized distributors.
- Manufacturer
- Microchip
- Package
- Quad Flat Packages
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F4455-I/PT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.8600(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
- USB 2.0 Full-Speed device controller integrated on-chip, eliminating external USB PHY components
- 8-bit PIC18 CPU running at up to 48 MHz with 24 KB self-programmable Flash and 2 KB SRAM
- Operates from 2 V minimum supply at 4 MHz, enabling battery-powered and low-voltage designs
Applications
The PIC18F4455-I/PT is well-suited for USB peripheral designs such as HID devices, CDC virtual COM ports, and custom USB data acquisition systems that require a compact 44-pin TQFP footprint. Its 10-bit ADC and multiple CCP channels make it popular for embedded sensor interfaces and motor control applications. Industrial handheld instruments and consumer electronics benefit from its wide 2 V to 5.5 V supply range and integrated USB connectivity.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TQFP-44 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Has ADC | YES |
| Additional Feature | ALSO OPERATES AT MINIMUM 2V AT 4MHZ |
| 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 | 35 |
| Number of Serial I/Os | 1 |
| Number of Timers | 4 |
| 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) | 2048 |
| ROM (words) | 24576 |
| 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 |
| 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 | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What USB capabilities does the PIC18F4455-I/PT provide and at what clock speed?
The PIC18F4455-I/PT integrates a USB 2.0 Full-Speed device controller operating at 12 Mbps, clocked from its internal 48 MHz PLL. This allows the MCU to enumerate as HID, CDC, or custom USB class devices without any external USB PHY IC, saving board space and BOM cost in compact designs.
Can PIC18F4455-I/PT operate in a 3.3 V system alongside 5 V legacy peripherals?
Yes, the PIC18F4455-I/PT operates across a 2 V to 5.5 V supply range, making it compatible with both 3.3 V and 5 V systems. At 3.3 V, it can run at up to 48 MHz when using the USB PLL, and its I/O pins are tolerant enough for mixed-voltage interfaces. The 10-bit ADC and UART/SPI/I2C peripherals remain functional across the full supply range.
How does the PIC18F4455-I/PT compare to PIC18F2455 for a USB data-logger design?
The PIC18F4455-I/PT offers 36 I/O pins in a 44-pin TQFP versus the PIC18F2455's 25 I/O pins in a 28-pin package, providing 11 additional GPIO lines for LCD, SD card, or sensor interfaces. Both share identical 24 KB Flash and USB peripherals, but the 4455 variant's larger pin count is preferable when a design requires more than 8 analog channels or additional SPI/I2C buses.
What is the Flash endurance and data retention specification for PIC18F4455-I/PT?
The PIC18F4455-I/PT Flash memory supports a minimum of 100,000 write/erase cycles and data retention of more than 40 years at room temperature, making it suitable for firmware update scenarios via USB bootloader. The 24 KB self-programmable Flash enables over-the-air style updates where the running application can overwrite its own code pages without external programming hardware.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $6.7600 | $6.76 |
| 25+ | $6.1200 | $153.00 |
| 50+ | $6.0800 | $304.00 |
| 100+ | $5.5400 | $554.00 |
| 1000+ | $5.1000 | $5100.00 |
| 5000+ | $4.8600 | $24300.00 |
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