PIC18LF2520-I/SP - 8-Bit 40MHz 32KB Flash MCU | Microchip
N.º da peça: PIC18LF2520-I/SP ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $6.4 | $6,40 |
| 10 | $5.75 | $57,50 |
| 100 | $5.1 | $510,00 |
| 500 | $4.55 | $2.275,00 |
| 1.000 | $4.1 | $4.100,00 |
PIC18LF2520-I/SP Visão geral
What is a PIC18LF2520-I/SP? An 8-bit microcontroller is a single-chip computer that integrates a CPU, memory, and peripherals on a single die. The PIC18 family from Microchip Technology is a RISC (Reduced Instruction Set Computer) architecture family that sits above the PIC16 in capability, offering 16-bit wide instruction words, linear memory addressing, hardware multiply, and C-friendly extensions. The "LF" prefix indicates the Low-Voltage / Low-Power F (Flash) family capable of operating from 2.0V to 5.5V with nanoWatt power-saving features, while plain "F" variants typically require 4.2V minimum. The 2520 model within the LF family provides 32 KB Flash, 1.5 KB RAM, and 25 I/O pins, sitting in the mid-range of the PIC18F2520 sub-family.
Key features include 32 KB (16K x 16) of Flash program memory, 1536 bytes of SRAM data memory, 256 bytes of EEPROM, 25 digital I/O pins, a 10-bit multi-channel Analog-to-Digital Converter (ADC), enhanced Capture/Compare/PWM modules, and nanoWatt Technology power management. The device supports operation from 2.0V to 5.5V, making it suitable for both 3.3V and 5V systems. Industrial temperature range -40C to +85C is supported via the "I" suffix.
Technically, the PIC18LF2520 uses a modified Harvard architecture with separate program and data buses, a hardware 8-bit multiplier for DSP-like routines, and a 31-level deep hardware stack. Code is executed from Flash at 10 MIPS (10 million instructions per second) at 40 MHz clock. The 10-bit ADC supports up to 10 channels with automatic acquisition and conversion, suitable for sensor signal acquisition.
Typical applications include industrial sensor interfaces, low-power remote control systems, consumer appliance control, USB-to-UART bridging (when combined with external transceiver), HVAC controllers, and battery-powered instrumentation. The nanoWatt features (Idle, Sleep, and dynamic oscillator switching) make it well suited to battery-backed designs.
When designing with this part, ensure decoupling capacitors (100 nF and 10 uF) are placed close to VDD/VSS pairs. Program the device via ICSP (In-Circuit Serial Programming) using PGC/PGD/PGM pins. For 3.3V-only systems, prefer the "LF" variant over the plain "F" version to ensure full operation across the voltage range.
This page synthesizes distributor pricing, drop-in PIC18 family alternatives in the same SPDIP-28 footprint, and practical design notes not found in the manufacturer datasheet alone.
Alternativas drop-in para PIC18LF2520-I/SP — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC18LF2520-I/SP (mesmo formato e footprint) — diferindo em Package, ADC, Mounting Type, Timers, Core Architecture.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18F2520-I/SP
✅ Drop-In✓ Em estoque
$3.33 / unidade
Ver ficha técnica →PIC18LF2510-I/SP
✅ Drop-In✓ Em estoque
$3.74 / unidade
Ver ficha técnica →PIC18LF2520-I/SP Classificações máximas e características elétricas
| Core Architecture | 8-bit PIC18 RISC |
| Frequência máxima de clock | 40 MHz |
| Program Memory Type | Flash |
| Program Memory Size | 32 KB (16K x 16) |
| RAM Size | 1536 bytes |
| EEPROM Size | 256 bytes |
| Number of I/O Pins | 25 |
| ADC | 10-bit, multi-channel |
| Supply Voltage Range | 2.0 V to 5.5 V |
| Faixa de temperatura de operação | -40 C to +85 C (Industrial) |
| Encapsulamento | 28-pin SPDIP |
| Tipo de montagem | Through-Hole |
| Instruction Set Width | 16-bit |
| Hardware Stack Depth | 31 levels |
| Peripheral Features | nanoWatt Technology, PWM, Enhanced USART, SPI, I2C |
| MIPS | 10 MIPS at 40 MHz |
| Nível MSL | 1 (unlimited) |
Configuração de pinos do PIC18LF2520-I/SP
| Pino 1 | MCLR/VPP/RE3 — Master Clear (reset) input / programming voltage / digital input only |
| Pino 2 | RA0/AN0/CVREF — PORTA bit 0 / Analog input 0 / Comparator voltage reference output |
| Pino 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| Pino 4 | RA2/AN2/VREF- — PORTA bit 2 / Analog input 2 / ADC negative reference |
| Pino 5 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / ADC positive reference |
| Pino 6 | RA4/T0CKI/C1OUT — PORTA bit 4 / Timer0 clock input / Comparator 1 output |
| Pino 7 | RA5/AN4/SS/C2OUT — PORTA bit 5 / Analog input 4 / SPI slave select / Comparator 2 output |
| Pino 8 | OSC1/CLKI/RA7 — Oscillator crystal input / external clock input / PORTA bit 7 |
| Pino 9 | OSC2/CLKO/RA6 — Oscillator crystal output / clock output / PORTA bit 6 |
| Pino 10 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pino 11 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 module |
| Pino 12 | RC2/CCP1 — PORTC bit 2 / Enhanced CCP1 module |
| Pino 13 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pino 14 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pino 15 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pino 16 | RC6/TX/CK — PORTC bit 6 / USART async transmit / USART sync clock |
| Pino 17 | RC7/RX/DT — PORTC bit 7 / USART async receive / USART sync data |
| Pino 18 | VSS — Ground reference |
| Pino 19 | VDD — Positive supply voltage (2.0V to 5.5V) |
| Pino 20 | RB0/INT0/AN10 — PORTB bit 0 / External interrupt 0 / Analog input 10 |
| Pino 21 | RB1/INT1/AN8 — PORTB bit 1 / External interrupt 1 / Analog input 8 |
| Pino 22 | RB2/INT2/AN9 — PORTB bit 2 / External interrupt 2 / Analog input 9 |
| Pino 23 | RB3/AN9/CCP2 — PORTB bit 3 / Analog input 9 / CCP2 module |
| Pino 24 | RB4/AN11/KBI0 — PORTB bit 4 / Analog input 11 / Keyboard interrupt 0 |
| Pino 25 | RB5/KBI1/PGM — PORTB bit 5 / Keyboard interrupt 1 / LVP programming |
| Pino 26 | RB6/KBI2/PGC — PORTB bit 6 / Keyboard interrupt 2 / ICSP clock |
| Pino 27 | RB7/KBI3/PGD — PORTB bit 7 / Keyboard interrupt 3 / ICSP data |
| Pino 28 | VDD — Positive supply voltage (2.0V to 5.5V) |
Aplicações típicas
PIC18LF2520-I/SP é adequado para 6 aplicaçãos: Industrial Sensor Interface, Low-Power Remote Control, HVAC Climate Controller, USB-to-UART Bridge, Consumer Appliance Control, Battery-Powered Instrumentation.
Industrial Sensor Interface
The PIC18LF2520-I/SP is well-suited for industrial sensor interface modules requiring multi-channel analog acquisition. Its 10-bit ADC with up to 10 channels handles thermocouple, RTD bridge, and 4-20 mA current loop signals with 4.88 mV resolution at 5V reference. The 32 KB Flash supports Modbus RTU or CANopen protocol stacks, while the 1536 B RAM buffers sensor data before transmission. The 2.0V to 5.5V range accommodates loop-powered 4-20 mA designs. Operating at 40 MHz with 10 MIPS throughput, the device can poll 10 sensors at 100 Hz each with margin for filtering.
Recomendado
Low-Power Remote Control
For battery-powered remote controls and wireless sensor nodes, the PIC18LF2520-I/SP's nanoWatt Technology is critical. The device supports Sleep mode with current below 1 uA, idle mode with most peripherals running, and dynamic oscillator switching between high-speed and 31 kHz low-power modes. At 2.0V operation from two AA cells, the LF variant delivers full performance while the F variant would fail. The 32 KB Flash supports proprietary RF protocols and AES-128 encryption libraries for secure key fob applications.
Recomendado
HVAC Climate Controller
HVAC climate controllers benefit from the PIC18LF2520-I/SP's 10-bit ADC for temperature sensing (NTC thermistor reading via lookup tables in 32 KB Flash), PWM modules for triac phase-control of fan motors and compressor valves, and enhanced USART for communication with indoor unit network. The 25 I/O pins connect to keypads, LCD displays, and relays. Industrial -40C to +85C range covers rooftop unit and outdoor installations. Capture/Compare modules enable precise timing of defrost cycles and compressor soft-start ramps.
Recomendado
USB-to-UART Bridge
When paired with an external USB transceiver, the PIC18LF2520-I/SP serves as a low-cost USB-to-UART bridge for legacy equipment modernization. The enhanced USART handles UART at up to 5 Mbps in LIN 2.0 mode, while the 1536 B RAM buffers USB packets. The 32 KB Flash implements USB HID or CDC class drivers without external firmware, reducing BOM cost. The 28-pin SPDIP package is breadboard-friendly for prototype firmware development. Operating from 3.3V, the LF variant supports bus-powered USB designs without level shifters.
Recomendado
Consumer Appliance Control
White goods and small kitchen appliances use the PIC18LF2520-I/SP for user interface control with capacitive touch via the ADC, PWM for motor speed control in blenders and washing machines, and SPI/I2C for LED ring indicators and segment displays. The 32 KB Flash supports product variants and multilingual UI strings. The nanoWatt features reduce standby power below EU eco-design directives. The 28-pin SPDIP is suited for hand-soldering in low-volume specialty appliance production.
Recomendado
Battery-Powered Instrumentation
Handheld multimeters, portable medical monitors, and field-test instruments rely on the PIC18LF2520-I/SP for low-voltage operation from Li-ion or NiMH packs. The 2.0V minimum VDD enables 1S Li-ion designs operating down to cutoff voltage. The 10-bit ADC acquires battery voltage, current sense, and sensor inputs. The 1536 B RAM stores measurement logs, while 256 B EEPROM retains calibration coefficients. The nanoWatt Sleep mode extends battery life during standby, while 40 MHz burst mode processes measurements quickly.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18LF2520-I/SP — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18F2520-I/SP | PIC18LF2520-I/SO | PIC18LF2520-I/ML | PIC18LF2510-I/SP | PIC18LF2515-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SPDIP-28 | SPDIP-28 - same | SOIC-28 | QFN-28 | SPDIP-28 - same | SOIC-28 |
| Program Memory (Flash) | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB | 32 KB |
| RAM Size | 1536 bytes | 1536 bytes | 1536 bytes | 1536 bytes | 1536 bytes | 1536 bytes |
| Maximum Clock Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Supply Voltage Range | 2.0 V to 5.5 V | 4.2 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| Number of I/O Pins | 25 | 25 | 25 | 25 | 25 | 25 |
| ADC | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| Lifecycle Status | Active | Active | Active | Active | Active | Active |
Principais diferenciais
- Wide 2.0V to 5.5V operating voltage (vs PIC18F2520-I/SP)
- nanoWatt Technology power management (vs PIC18LF2510-I/SP)
- Through-hole 28-pin SPDIP for prototyping (vs PIC18LF2520-I/ML (QFN-28))
Notas de projeto
The PIC18LF2520-I/SP must have both VDD pins (pin 19 and pin 28) and both VSS pins (pin 18) decoupled properly. Place a 100 nF ceramic capacitor within 5 mm of each VDD/VSS pair, plus a bulk 10 uF tantalum or aluminum polymer cap on the main VDD rail. The 28-pin SPDIP package has limited thermal dissipation; for sustained high-current GPIO loads (>20 mA per pin, >100 mA total), use external transistor drivers to prevent junction temperature rise. nanoWatt Sleep mode reduces current to <1 uA typical when all peripherals are off and the CPU is in Sleep.
Place the ICSP (In-Circuit Serial Programming) header footprint on every design that uses this MCU even if factory programming is planned. The PGC (RB6), PGD (RB7), and MCLR/VPP (pin 1) pins are required for ICSP; leaving RB6/RB7 as push-pull outputs in firmware prevents in-circuit programming. Add a 10 kohm pull-up on MCLR to VDD for normal operation, and a current-limiting resistor (approx. 470 ohm) in series with MCLR when using High-Voltage Programming mode. Crystal oscillator traces must be short (under 10 mm) with grounded guard rings to prevent noise coupling into the ADC.
The 'LF' variant is REQUIRED for 3.3V operation; the plain PIC18F2520 will not run below 4.2V and may malfunction intermittently between 3.3V and 4.2V. Do not confuse the 28-pin SPDIP pinout with the 40-pin PIC18LF4520, which has additional PORTD/PORTE pins. The 28-pin package does not expose PORTD or PORTE; analog inputs AN5-AN7 are mapped differently than on the 40-pin sibling. Always reference the pinout table in the datasheet Section 1 before laying out a PCB. Configuration bits (CONFIG1H, CONFIG1L, etc.) must be set correctly in source code - leaving them at default can cause oscillator not to start.
Informações de conformidade
RoHS/REACH/lead-free status not explicitly stated in verified web data. PIC18LF2520 is an industrial-grade MCU (not AEC-Q100 automotive qualified). For compliance confirmation, request the latest material declaration from Microchip.
