PIC18LF8525-I/PT - 8-Bit 40MHz MCU, 48KB Flash, 80-TQFP | Microchip
부품 번호: PIC18LF8525-I/PT ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $9.35 | $9.35 |
| 10 | $8.41 | $84.10 |
| 100 | $7.15 | $715.00 |
| 500 | $6.22 | $3,110.00 |
| 1,000 | $5.48 | $5,480.00 |
PIC18LF8525-I/PT 개요
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.
드롭인 대체품: PIC18LF8525-I/PT — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: PIC18LF8525-I/PT (동일 폼 팩터 및 풋프린트) — 차이점: Package, Core Architecture, Operating Temperature, ADC, MSL Level.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
PIC18F8525-I/PT
✅ 드롭인✓ 재고 있음
$8.45 / 개
데이터시트 보기 →PIC18LF8525T-I/PT
✅ 드롭인✓ 재고 있음
$4.85 / 개
데이터시트 보기 →PIC18F8527-I/PT
✅ 드롭인✓ 재고 있음
$4.31 / 개
데이터시트 보기 →PIC18F8627-I/PT
✅ 드롭인✓ 재고 있음
$9.05 / 개
데이터시트 보기 →PIC18LF6627-I/PT
✅ 드롭인✓ 재고 있음
$8.2 / 개
데이터시트 보기 →PIC18LF8525-I/PT 최대 정격 & 전기적 특성
| Core | PIC18 8-bit RISC Harvard architecture |
| Program Memory (Flash) | 48 KB (24K x 16 words) |
| RAM | 3840 bytes |
| EEPROM | 1024 bytes |
| Maximum CPU Speed | 40 MHz (10 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| I/O Pins | 70 |
| ADC | 10-bit, 16 channels |
| Timers | 4 (Timer0-Timer3) |
| UART / USART | 2x USART |
| SPI / I2C | 1x MSSP (SPI or I2C) |
| CAN | 1x CAN module |
| PWM Channels | 5 |
| Comparators | 2 |
| 패키지 | 80-pin TQFP (12x12 mm) |
| 동작 온도 | -40C to +85C (Industrial) |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant |
| Lead-Free | Yes |
| Flash Endurance | 100K erase/write cycles (typical) |
PIC18LF8525-I/PT 80-pin tqfp (12x12 mm) 핀 구성 가이드
PIC18LF8525-I/PT(80-pin tqfp (12x12 mm) 패키지)의 핀 구성입니다. 이 디지털 IC에는 GPIO, 통신 인터페이스(UART, SPI, I2C), 전원 핀이 포함되어 있습니다. 대체 핀 기능과 구성 옵션은 제조사 데이터시트를 참조하십시오. 임베디드 시스템 설계와 PCB 레이아웃에 필수적입니다.
다음에 대한 상세 핀아웃 데이터 없음: PIC18LF8525-I/PT.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
PIC18LF8525-I/PT 적합 용도: 6 애플리케이션s: Industrial Control Panels, Automotive Body and Chassis Modules, HVAC and Building Automation, Medical Instrumentation, User-Interface Boards with Graphic LCDs, USB-to-UART Bridge and Sensor Hub.
Industrial Control Panels
The PIC18LF8525-I/PT's 70 I/O pins and 16-channel 10-bit ADC make it a strong fit for industrial control panels that must interface with multiple pushbuttons, rotary encoders, LED indicators, and analog sensors simultaneously. Running at 40 MHz (10 MIPS), the MCU can scan keypads, drive 7-segment or graphic LCDs, and execute PID control loops at deterministic sub-millisecond intervals, while the 48 KB Flash holds protocol stacks such as Modbus RTU over RS-485 via the integrated USART. The 2.0-5.5V supply allows direct use in 24V-derived 5V or 3.3V power rails common in industrial racks, and the -40C to +85C industrial temperature range supports both indoor cabinets and outdoor enclosures without derating. The CAN module is reserved for future panel-to-panel networking.
추천
Automotive Body and Chassis Modules
The PIC18LF8525-I/PT is well suited for automotive body-electronics modules such as door controllers, seat controllers, climate-control heads, and lighting drivers. The integrated CAN 2.0B controller allows direct connection to the vehicle CAN bus through an external transceiver, eliminating the need for a separate communication MCU. With 48 KB of Flash, body-control firmware and small CAN-based diagnostic stacks fit comfortably, and the 10-bit ADC at 16 channels reads thermistors, position sensors, and current shunts used in seat and mirror positioning. Although the industrial temperature grade (-40C to +85C) covers most body applications, for under-hood deployment above +85C, the AEC-Q100-qualified PIC18F6525-I/PT or similar automotive variants should be specified.
추천
HVAC and Building Automation
HVAC controllers and building-automation gateways benefit from the PIC18LF8525-I/PT's combination of wide VDD tolerance, generous I/O count, and integrated communication peripherals. A single MCU can read multiple thermistor temperature inputs through its 16-channel ADC, drive triac-controlled fan and compressor outputs through PWM channels, and bridge data to a building-management system via RS-485 Modbus (USART) or CAN (if the BMS uses it). The 48 KB Flash easily accommodates Modbus stack plus scheduling logic, while self-programming Flash allows field firmware updates through a service tool. Industrial temperature operation supports both equipment rooms and rooftop installations across all climate zones.
추천
Medical Instrumentation
In medical instrumentation such as portable patient monitors, infusion pumps, and laboratory analyzers, the PIC18LF8525-I/PT's deterministic interrupt response and rich peripheral set support real-time sensor acquisition and motor control. The 10-bit ADC with 16 channels handles multiple physiological signals (temperature, pressure, flow), while PWM outputs drive small brushed or stepper motors for fluid-handling subsystems. The wide 2.0-5.5V supply allows battery-operated designs to use a single Li-ion cell with a buck-boost regulator. Although the MCU itself is not FDA-cleared, its use as a component in IEC 60601-compliant equipment is well documented, provided firmware is validated to the relevant safety class.
추천
User-Interface Boards with Graphic LCDs
User-interface boards with graphic LCDs, keypads, and rotary encoders benefit from the PIC18LF8525-I/PT's 70 I/O pins which can simultaneously drive an 8-bit parallel LCD interface, scan a 4x5 matrix keypad, and read multiple encoder inputs without external I/O expanders. Running at 40 MHz, the MCU can refresh a 128x64 graphical LCD at 30+ FPS while servicing serial commands from a host processor. The 48 KB Flash holds small bitmap fonts, multilingual character tables, and menu-state machines. Industrial temperature operation supports outdoor HMI panels such as kiosks, charging-station displays, and factory-floor operator terminals.
추천
USB-to-UART Bridge and Sensor Hub
The PIC18LF8525-I/PT serves well as a USB-to-UART bridge or a sensor-hub gateway where it aggregates multiple sensors over SPI/I2C (MSSP) and USART, then exposes them to a host processor. The MSSP can act as an I2C master reading many peripheral sensors, while the USART provides a debug console or external radio link. The 48 KB Flash accommodates protocol-translation firmware and simple AT-style command parsers. With the LF variant's 2.0V minimum VDD, the design can run directly from a battery-backed supply, and the 70 I/O lines remain available for additional GPIO, status LEDs, and test points.
추천
추천 제품 요약
엔지니어링 참조 데이터: PIC18LF8525-I/PT — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PIC18F8525-I/PT | PIC18LF8525T-I/PT | PIC18F8527-I/PT | PIC18F8627-I/PT | PIC18LF6627-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-80 (12x12 mm) | TQFP-80 (same) | TQFP-80 (same) | TQFP-80 (same) | TQFP-80 (same) | TQFP-80 (same) |
| Core / Architecture | 8-bit PIC18 Harvard | 8-bit PIC18 Harvard | 8-bit PIC18 Harvard | 8-bit PIC18 Harvard | 8-bit PIC18 Harvard | 8-bit PIC18 Harvard |
| Flash Memory | 48 KB | 48 KB | 48 KB | 48 KB | 96 KB | 64 KB |
| RAM | 3840 bytes | 3840 bytes | 3840 bytes | 3840 bytes | 3840 bytes | 3936 bytes |
| Maximum Clock Speed | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| VDD Range | 2.0 V to 5.5 V | 4.2 V to 5.5 V | 2.0 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 2.0 V to 5.5 V |
| I/O Pins | 70 | 70 | 70 | 70 | 70 | 54 |
| ADC Channels / Resolution | 16 x 10-bit | 16 x 10-bit | 16 x 10-bit | 16 x 10-bit | 16 x 10-bit | 12 x 10-bit |
| CAN Module | Yes | Yes | Yes | Yes (enhanced) | Yes (enhanced) | Yes |
| Approx. Unit Price (qty 1) | $9.35 | ~$9.35 | ~$9.35 | ~$10.20 | ~$11.50 | ~$8.40 |
주요 차별점
- Low-voltage LF silicon supporting 2.0V VDD (vs PIC18F8525-I/PT)
- Integrated CAN 2.0B controller on-chip (vs PIC18LF452-I/PT (40-pin variant))
- 70 I/O pins in single package (vs PIC18LF6627-I/PT (54 I/O))
설계 노트
Place a 100 nF ceramic decoupling capacitor within 5 mm of every VDD/VSS pair on the PIC18LF8525-I/PT, plus a bulk 10 uF tantalum or ceramic near the device's main VDD pin. For noise-sensitive ADC applications, separate analog VDD/AVDD/AVSS from digital VDD with a ferrite bead and use a dedicated 100 nF + 10 uF bypass on AVDD. The 2.0-5.5V LF range means designers can power the MCU from a switching regulator's output, but the ADC reference accuracy will improve with a linear post-regulator for analog rails.
Estimated: with the 80-pin TQFP at 12x12 mm and 0.5 mm pitch, route signals on inner layers to break out from the dense perimeter pin field, and use a 4-layer stackup with continuous ground plane beneath the part for thermal dissipation and EMI control. Keep crystal traces (OSC1/OSC2) short and surrounded by ground guard ring; place the crystal within 5 mm of the pins. ICSP pins (PGC/PGD, MCLR, VPP) must remain accessible on the PCB to retain in-circuit programming and debug.
Do not substitute PIC18LF8525-I/PT firmware into a PIC18F8525-I/PT board without verifying the VDD rail - the F variant only operates from 4.2V to 5.5V and will brown-out below that, while the LF variant operates down to 2.0V. Also note that the MCLR pin defaults to disabled on some configurations; the configuration bits (CONFIG3H) must enable MCLR for proper ICSP operation. Finally, do not exceed 40 MHz system clock across the full VDD range; PLL multiplier selection depends on the chosen oscillator configuration.
For CAN bus designs, keep the CAN TX/RX traces to the external MCP2551 (or similar) transceiver short and impedance-controlled (typically 120 ohms differential), with a termination resistor at each end of the bus. For ADC accuracy, route analog input traces away from PWM and switching-node traces, and use a ground pour around the analog pins. When using the parallel slave port (PSP), assign upper data bus lines (PORTD/PORTE) to a clean trace region to minimize crosstalk.
Estimated: at the maximum 40 MHz clock and full I/O toggle activity, the PIC18LF8525-I/PT consumes approximately 15-25 mA from a 5V supply, leading to 75-125 mW power dissipation. With the TQFP-80's typical theta-JA around 50-60 C/W (still-air, no heatsink), junction temperature rise is 4-7 C above ambient, well within the 125C maximum for the industrial temperature range. No external heatsink is required for typical embedded use.
규정 준수 정보
RoHS and REACH compliant per Microchip product declarations; Pb-free 80-pin TQFP packaging. Not AEC-Q100 qualified - choose PIC18F6525-I/PT automotive variant for AEC-Q100 applications.