MICROCHIP PIC18F2455-I/SP 8-bit USB Microcontroller, 24KB Flash, DIP-28
MICROCHIP 8-bit USB MCU with 24KB flash, 48MHz, nanoWatt tech. Ideal for embedded control, data acquisition & PC connectivity.
The MICROCHIP PIC18F2455-I/SP is a high-performance, enhanced flash USB microcontroller featuring nanoWatt technology, making it ideal for power-sensitive and connected embedded applications. Its core strength lies in offering full-speed USB (12Mbps) connectivity alongside three additional serial ports: I²C™, SPI™ (up to 10Mbps), and an enhanced asynchronous serial port (EUSART). This combination is perfect for systems requiring periodic data exchange or firmware updates with a PC via a legacy-free USB connection.
With 24KB of enhanced flash program memory and 2KB of RAM, it provides ample space for complex control algorithms and data buffering. The microcontroller operates at up to 48MHz while maintaining broad software and hardware compatibility with earlier PIC16C745 USB devices, facilitating easier migration for existing designs.
Key features include comprehensive USB support: low-speed (1.5Mbps) and full-speed (12Mbps) operation, support for control, interrupt, isochronous, and bulk transfers, and management of up to 32 endpoints. A dedicated 1kB dual-access RAM buffers USB data, and an on-chip transceiver with voltage regulator simplifies design.
Power management is robust with a power-managed mode and two-speed oscillator start-up. The flexible oscillator structure supports four crystal modes, including a high-precision PLL for stable USB operation. Additional peripherals include an Enhanced Capture/Compare/PWM (ECCP) module and an 8 x 8 single-cycle hardware multiplier for efficient digital signal processing.
The device ensures long-term data integrity with flash and EEPROM retention exceeding 40 years and includes In-Circuit Debug (ICD) capability via two pins for simplified development. As an ESD-sensitive component, proper handling precautions are essential during installation and prototyping.
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