PIC18F2550-I/SP Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
Microchip PIC18F2550-I/SP is an 8-bit PIC18 microcontroller with 32 KB Flash, 256 B EEPROM, USB 2.0 full-speed interface, up to 48 MHz clock, 10-bit ADC, and a 28-pin SPDIP package for through-hole prototyping.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F2550-I/SP Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.5880(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
- Integrated USB 2.0 full-speed (12 Mbps) controller with on-chip transceiver removes need for external USB bridge chips
- 32 KB Flash plus 256 B data EEPROM supports complex USB firmware stacks with non-volatile parameter storage
- Operates down to 2 V minimum supply at 4 MHz, extending battery life in portable USB-connected instruments
- 48 MHz PLL-boosted clock from a 4 MHz or 8 MHz crystal achieves full USB timing compliance without a 48 MHz crystal
- 28-pin SPDIP through-hole package is directly breadboard-compatible for rapid prototyping and educational projects
Applications
The PIC18F2550-I/SP is a popular choice for USB HID, CDC virtual COM port, and custom USB class device firmware, enabling direct PC connectivity without driver installation in many cases. Its 32 KB Flash and on-chip USB transceiver make it practical for USB game controllers, custom keyboards, sensor dongles, and low-speed data loggers that transmit measurements to a host computer. Hobbyists and educators favor the 28-pin SPDIP package for its compatibility with standard breadboards and DIP IC sockets, allowing easy insertion and removal during development.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SPDIP-28 |
| 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 | R-PDIP-T28 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 3 |
| Number of I/O Lines | 24 |
| 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 | DIP28,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| RAM (bytes) | 2048 |
| ROM (words) | 32768 |
| 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 | NO |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| ## PIC18F2550-I/SP Alternates Showing results | Image |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | 3A991.A.2 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC18F2550-I/SP:
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 48MHz, CMOS, PDIP28
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Frequently Asked Questions
Does the PIC18F2550-I/SP include a built-in USB transceiver, and what USB speed does it support?
Yes, the PIC18F2550-I/SP integrates a full-speed USB 2.0 transceiver operating at 12 Mbps directly on the chip. This eliminates the external USB bridge IC and associated level-shifting components, reducing BOM cost and PCB area. Microchip's free USB firmware stack supports HID, CDC, and vendor-specific class implementations within the 32 KB Flash.
How does the 48 MHz PLL work in the PIC18F2550-I/SP to achieve USB-compliant timing from a lower-frequency crystal?
The PIC18F2550-I/SP includes an internal PLL that multiplies a 4 MHz crystal or resonator input up to 48 MHz, meeting the USB 2.0 full-speed clock accuracy requirement of ±2500 ppm. A 20 MHz crystal input is also supported via the 4x PLL path. This flexibility means designers can select common, lower-cost crystal frequencies rather than sourcing a dedicated 48 MHz crystal.
What is the minimum supply voltage for the PIC18F2550-I/SP and how does it affect maximum clock speed?
The PIC18F2550-I/SP can operate from as low as 2 V supply voltage, but at 2 V the maximum clock frequency is limited to 4 MHz. At the standard 5 V supply, the device runs at full 48 MHz. For USB operation, the supply must be at least 4.2 V to power the internal USB transceiver and maintain correct differential signal levels on D+ and D-.
Can the PIC18F2550-I/SP store configuration data persistently, and how much non-volatile data memory is available?
The PIC18F2550-I/SP includes 256 bytes of on-chip data EEPROM that retains stored values through power cycles without requiring external Flash or FRAM components. This is sufficient for storing USB product descriptors, calibration coefficients, device serial numbers, and user configuration settings, making the device self-contained for field-deployable USB instrumentation products.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.5880 | $3.59 |
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