PIC18F4455-I/ML Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
Microchip PIC18F4455-I/ML is an 8-bit USB 2.0 microcontroller with 24 KB Flash and 2 KB RAM. It operates up to 48 MHz and features 10-bit ADC with 13 channels. Available in QFN-44 package, suitable for cost-effective embedded USB applications.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F4455-I/ML Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.1000(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
- 8-bit PIC18 core running up to 48 MHz with USB 2.0 Full-Speed interface
- 24 KB self-programmable Flash and 2 KB SRAM with hardware USB transceiver
- 10-bit ADC with 13 channels, USART, SPI, and I2C communication peripherals
- Wide operating voltage down to 2 V at 4 MHz in compact QFN-44 package
Applications
The PIC18F4455-I/ML is well suited for USB-connected embedded systems such as HID devices, data loggers, and custom USB peripherals. Its 48 MHz clock and 24 KB Flash make it practical for small-to-medium firmware applications requiring reliable USB 2.0 connectivity. Industrial control panels and consumer electronics that need low-power MCU operation with USB interfacing also benefit from this part.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | QFN-44 |
| Factory Lead Time | 5Weeks |
| 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-PQCC-N44 |
| 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 | 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) | 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 | 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 | 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 maximum clock frequency of PIC18F4455-I/ML and how does it relate to USB operation?
The PIC18F4455-I/ML runs at up to 48 MHz, which is the required clock frequency to support USB 2.0 Full-Speed operation at 12 Mbps. This allows simultaneous peripheral execution and USB data handling within the same 8-bit core without an external USB controller.
How much on-chip memory does the PIC18F4455-I/ML provide for typical firmware projects?
It provides 24 KB of self-programmable Flash memory for program storage and 2 KB of SRAM for runtime data. This is sufficient for moderate-complexity USB HID or CDC firmware, particularly when code is optimized for the 8-bit PIC18 architecture running at 48 MHz.
For a compact PCB design, what are the physical characteristics of the QFN-44 package used on PIC18F4455-I/ML?
The QFN-44 package offers a small 8 mm x 8 mm footprint with 44 pins and exposed thermal pad, enabling dense PCB layouts with low parasitic inductance. This makes PIC18F4455-I/ML suitable for space-constrained USB embedded designs requiring 13 ADC input channels.
Which types of serial communication interfaces are supported on PIC18F4455-I/ML?
The device supports USART (serial UART/SPI in MSSP mode), SPI, and I2C through its MSSP module, plus the native USB 2.0 Full-Speed interface. These 4 communication peripherals allow connectivity with sensors, memory chips, and host computers from a single 8-bit MCU.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $7.1000 | $7.10 |
| 45+ | $6.9900 | $314.55 |
| 90+ | $6.9200 | $622.80 |
| 100+ | $5.8200 | $582.00 |
| 1000+ | $5.3600 | $5360.00 |
| 5000+ | $5.1000 | $25500.00 |
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