PIC18LF8525-I/PT
PIC18LF8525-I/PT - 8-Bit 40MHz MCU, 48KB Flash, 80-TQFP | Microchip
The Microchip Technology PIC18LF8525-I/PT is an 8-bit PIC18-family CMOS microcontroller (MCU) integrating 48 KB (24K x 16) of enhanced Flash program memory, 3840 bytes of RAM, and a 16-channel 10-bit analog-to-digital converter (ADC), all housed in an 80-pin TQFP package measuring 12x12 mm. The device executes instructions at up to 40 MHz (10 MIPS) from a 2.0V to 5.5V supply, with the low-voltage "LF" suffix denoting extended low-voltage operation across the entire PIC18F8525 silicon family. As a member of Microchip's high-performance PIC18 family, it targets complex embedded applications that need ample code space and rich peripheral integration.
A microcontroller (MCU) is a single-chip computer that combines a CPU core, non-volatile program memory (typically Flash), working RAM, and a fixed set of peripherals such as ADC, timers, and communication interfaces. Within the embedded hierarchy, the PIC18 family sits between Microchip's baseline PIC10/12/16 MCUs and its 16-bit dsPIC/PIC24 parts, balancing computational throughput with deterministic interrupt response. The PIC18LF8525 sits at the high end of the 8-bit PIC18 lineup, offering more pins, memory, and I/O than smaller PIC18Fxx2x and PIC18FxxKx0 devices, while remaining code-compatible with the broader PIC18 ecosystem for portability of firmware and development tools.
Key features include 70 digital I/O pins spread across multiple ports (PORTA-PORTG), 16 channels of 10-bit ADC, two USART modules, MSSP (SPI/I2C), CAN, parallel slave port, 4 timers, and an internal 32 kHz to 8 MHz oscillator with PLL options. The device also offers five PWMs, two comparators, 100K erase/write cycle Flash endurance, and self-programming capability. Industrial-grade temperature range is -40C to +85C, and the part ships in Pb-free TQFP-80 packaging.
Architecturally, the PIC18LF8525 uses an enhanced RISC Harvard core with 16-bit instructions and 8-bit data path, instruction pipelining, hardware multiplier, and a 31-level hardware stack. The enhanced Flash supports block erase and self-write, enabling bootloader-driven firmware updates and in-application reprogramming without external programmer hardware, which is essential for deployed industrial nodes.
Typical applications include industrial control panels, automotive body and chassis subsystems, building automation, HVAC controllers, medical instrumentation, user-interface boards with keypads and graphic LCDs, USB-to-UART bridges, and sensor-hub nodes. The wide 2.0-5.5V supply range plus generous I/O count also make it suitable for legacy 5V designs transitioning away from older PIC16 platforms.
When designing with this part, ensure Vdd decoupling uses a 100 nF ceramic capacitor placed within 5 mm of each Vdd/Vss pair, and follow Microchip's recommended ICSP connections (PGC/PGD/MCLR/Vpp) to retain in-circuit debug and programming access. Note that PIC18LF vs PIC18F parts are pin-compatible but the LF variant extends the low end of Vdd to 2.0V; do not substitute between them without verifying firmware voltage thresholds and ADC reference scaling.
This page synthesizes distributor pricing, parametric cross-reference data, and engineering design notes that go beyond the manufacturer datasheet alone, helping procurement and firmware engineers evaluate the PIC18LF8525-I/PT for new designs and legacy replacements.
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