PIC18F4553-I/ML Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
PIC18F4553-I/ML is an 8-bit PIC18 microcontroller from Microchip featuring 32 KB Flash, 2 KB RAM, and full-speed USB 2.0 in a 44-pin QFN package. It operates up to 48 MHz and includes an on-chip ADC for analog signal acquisition. Suited for USB HID peripherals, data loggers, and embedded control applications requiring direct PC connectivity.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F4553-I/ML Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $11.8200(MOQ 135)
- 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 interface for direct PC connectivity without external USB chip
- 32 KB Flash and 2 KB RAM support moderately complex embedded firmware
- 48 MHz maximum clock speed enables fast control loops and USB transaction handling
- On-chip ADC for direct analog sensor signal acquisition
- Compact 44-pin QFN package reduces PCB footprint versus equivalent TQFP devices
Applications
PIC18F4553-I/ML is widely used in USB HID and CDC devices such as custom keyboards, barcode scanner interfaces, and USB-to-serial adapters where a simple microcontroller with native USB is preferred. Data acquisition systems leverage its on-chip ADC and USB to stream sensor data directly to a host PC without an intermediate UART or SPI bridge. Hobbyist and prototyping platforms also adopt this MCU for its straightforward USB stack integration with Microchip's library support.
Specifications
| Pbfree Code | Yes |
| YTEOL | 7.5 |
| Has ADC | YES |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC18 |
| Clock Frequency-Max | 48MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| JESD-30 Code | S-XQCC-N44 |
| JESD-609 Code | e3 |
| Number of I/O Lines | 34 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | LCC44,.32SQ,25 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 2048 |
| ROM (words) | 32768 |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Speed | 48MHz |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 5V |
| 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
Does PIC18F4553-I/ML support full-speed USB 2.0 natively, and what does that mean for BOM cost?
Yes. PIC18F4553-I/ML includes a full-speed USB 2.0 device peripheral operating at 12 Mbps on-chip, eliminating the need for an external USB bridge chip such as CH340 or FT232. This integration can reduce BOM cost by several dollars per unit and simplify PCB layout by removing an additional IC and its associated decoupling and oscillator components.
How does the 44-pin QFN package of PIC18F4553-I/ML compare in footprint to a TQFP-44 variant?
A 44-pin QFN package has a body size of approximately 8 mm x 8 mm with no lead protrusion, whereas a TQFP-44 package typically measures around 10 mm x 10 mm including leads. The QFN version of PIC18F4553 saves roughly 20% board area and is preferred in space-constrained USB device designs.
For a USB data logger running at 48 MHz, how much Flash memory does PIC18F4553-I/ML provide for firmware and storage buffers?
PIC18F4553-I/ML provides 32 KB of on-chip Flash for program storage and 2 KB of RAM for runtime data buffers. At 48 MHz clock speed, this is typically sufficient to host a Microchip USB CDC or HID stack alongside sensor sampling and basic data formatting routines for applications logging up to a few hundred bytes per second.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 135+ | $13.1300 | $1772.55 |
| 675+ | $12.4800 | $8424.00 |
| 1350+ | $11.8200 | $15957.00 |
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