PIC18F4550-I/P 8-Bit Flash Microcontroller with Full-Speed USB DIP-40 (PIC18F4550-I/P DIP IC)
The PIC18F4550-I/P is a high-performance, 40-pin 8-bit Flash-based microcontroller from Microchip's advanced PIC18 family, specifically engineered for high-density connectivity and USB-integrated designs. Housed in a standard 40-pin DIP package, it is the higher I/O count sibling of the PIC18F2550. It features an integrated Full-Speed USB 2.0 interface (12 Mbit/s) with an on-chip transceiver and dedicated USB RAM. Utilizing a powerful RISC architecture with 75 instructions and a hardware 8x8 multiplier, it can reach speeds of 48MHz (12 MIPS) using its internal PLL. With 32KB of Flash memory, 2KB of RAM, and 256 bytes of EEPROM, it provides the computational strength and extensive I/O (35 pins) required for complex PC-linked peripherals and industrial control systems.
This IC is a premier choice for engineering students and developers in India for building DIY USB-based data acquisition systems, high-pin-count HID devices (like custom macro keyboards or flight simulators), and smart home controllers that interface directly with computers via USB. Its 40-pin DIP footprint makes it perfect for breadboard prototyping and robust through-hole PCB designs.
Key Features
- High-performance RISC CPU with 75 instructions (C-compiler optimized)
- Integrated Full-Speed USB 2.0 Module (12 Mbit/s) with 16 Endpoints
- 1KB Dual-Access RAM dedicated for USB buffering
- Hardware 8x8 Single-Cycle Multiplier for accelerated math operations
- 32KB Flash program memory (10,000 erase/write cycles)
- 13-channel 10-bit Analog-to-Digital Converter (ADC)
- Enhanced Capture/Compare/PWM (ECCP) with up to 4 outputs
- Dual Analog Comparators with programmable voltage reference
- Internal Oscillator Block with 48MHz PLL for USB operations
- nanoWatt Technology for eXtreme Low Power (XLP) management
Specifications
- IC Type = 8-Bit Flash Microcontroller with USB
- Program Memory = 32KB (16384 Words)
- Data RAM = 2048 Bytes (2KB)
- Data EEPROM = 256 Bytes
- ADC Resolution = 10-Bit (13 Channels)
- Maximum Speed = 48MHz (12 MIPS)
- I/O Pins = 35 (Ports A, B, C, D, and E)
- Supply Voltage = 4.2V to 5.5V
- Current Sink/Source = 25mA
- Package Type = PDIP-40
- Number of Pins = 40
- Mounting Type = Through-Hole
- Operating Temperature = -40 to 85 degrees Celsius
Interfaces
- PIN 1 (MCLR/VPP/RE3) = Master Clear / Programming Voltage
- PIN 2 to 7 (RA0 to RA5) = Port A / Analog Inputs / USB Vref
- PIN 8 to 10 (RE0 to RE2) = Port E / Analog Inputs
- PIN 11, 32 (VDD) = Positive Supply Voltage (5V)
- PIN 12, 31 (VSS) = Ground (0V)
- PIN 13, 14 (OSC1, OSC2) = External Crystal/Oscillator Inputs
- PIN 15 to 17 (RC0 to RC2) = Port C / Timers / ECCP / USB OE
- PIN 18, 23 (VUSB, RC4, RC5) = USB Voltage / USB D- / USB D+
- PIN 24 to 26 (RC6, RC7) = Port C / USART (TX/RX)
- PIN 19 to 22, 27 to 30 (RD0 to RD7) = 8-Bit Port D / Streaming Parallel Port
- PIN 33 to 40 (RB0 to RB7) = 8-Bit Port B / External Interrupts / ICSP
