PIC18LF2523-I/ML - 8-bit 40MHz 32KB Flash MCU | Microchip
Артикул: PIC18LF2523-I/ML ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $6.1 | $6,10 |
| 10 | $5.49 | $54,90 |
| 100 | $4.59 | $459,00 |
| 500 | $4.1 | $2.050,00 |
| 1.000 | $3.65 | $3.650,00 |
PIC18LF2523-I/ML Обзор
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path. It integrates a CPU core, program memory, working RAM, and peripherals such as timers, ADC, UART, and I/O ports into one package. The PIC18 family belongs to Microchip's enhanced mid-range line, sitting above baseline PIC16 parts and below 16-bit dsPIC/PIC24 controllers in the Microchip 8/16-bit MCU taxonomy. Within that hierarchy, the PIC18F2523 is one of three PIC18 sub-families (F-series) that share a common peripheral library and instruction set, enabling code migration across the entire PIC18 range.
Key features of the PIC18LF2523-I/ML include a wide 2.0 V to 5.5 V supply range (suitable for battery and 5V regulated systems), 25 digital I/O pins, a 10-bit A/D converter with up to 12 channels, two analog comparators, hardware 8x8 single-cycle multiplier, internal oscillator from 31 kHz to 8 MHz (up to 32 MHz with 4x PLL), and a Fail-Safe Clock Monitor. The QFN-28 (6x6 mm) package exposes a thermal pad to keep junction temperature low at higher MIPS loads and enables compact PCB layouts.
The architecture pairs an enhanced Harvard RISC CPU with a C-compiler-optimized instruction set, supporting both assembly and ANSI C development under MPLAB X IDE. The peripheral set is identical across the PIC18F2423/2523/4423/4523 family, so users can scale code from 28-pin to 40/44-pin members without rewriting drivers. The result is a flexible general-purpose MCU well-suited to consumer, industrial, and automotive-body applications.
Typical applications include sensor signal conditioning, low-cost motor drives (small DC/BLDC commutation), USB/HID bridges (via software bit-bang), industrial control panels, white goods user interfaces, and battery-powered data loggers. The wide operating voltage makes it appropriate for both 3.3 V and 5 V designs.
When designing with the PIC18LF2523-I/ML, allocate adequate ground vias under the exposed thermal pad of the QFN package for thermal and electrical performance. Place the decoupling capacitor as close as possible to VDD, and follow Microchip's recommended in-circuit serial programming (ICSP) layout for production programming and field updates.
This page synthesizes current distributor pricing, verified drop-in PIC18 family alternatives, and practical design notes not duplicated from the manufacturer datasheet, giving engineers and buyers a single-source decision aid.
Аналоги без доработки для PIC18LF2523-I/ML — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с PIC18LF2523-I/ML (тот же форм-фактор и посадочное место) — отличается по Package, ADC, Timers, Operating Temperature, Core.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC18F2523-I/ML
✅ Прямая замена✓ В наличии
$4.45 / шт.
Открыть даташит →PIC18LF2523T-I/ML
✅ Прямая замена✓ В наличии
$2.95 / шт.
Открыть даташит →PIC18LF2423-I/ML
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC18LF2520-I/ML
✅ Прямая замена✓ В наличии
$4.32 / шт.
Открыть даташит →PIC18LF2510-I/ML
✅ Прямая замена✓ В наличии
$1.85 / шт.
Открыть даташит →PIC18LF2515-I/SO
✅ Прямая замена✓ В наличии
$6.55 / шт.
Открыть даташит →PIC18LF2410-I/ML
✅ Прямая замена✓ В наличии
$2.13 / шт.
Открыть даташит →PIC18LF2523-I/ML Максимальные параметры и электрические характеристики
| Core Architecture | PIC18 (Enhanced Harvard RISC, 8-bit) |
| CPU Speed (Max) | 40 MHz (10 MIPS) |
| Program Memory (Flash) | 32 KB (16K x 16) |
| Data SRAM | 1536 bytes |
| Data EEPROM | 256 bytes |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| Operating Temperature (I grade) | -40 C to +85 C |
| I/O Pins | 25 |
| ADC | 10-bit, up to 12 channels |
| Comparators | 2 |
| Timers | 4 (8-bit / 16-bit mix) |
| UART | 1 (with LIN support) |
| SPI / I2C (MSSP) | 1 each |
| Internal Oscillator | 31 kHz to 8 MHz, up to 32 MHz with 4x PLL |
| Hardware Multiplier | 8 x 8 single-cycle |
| Watchdog Timer | Yes (with separate oscillator) |
| Fail-Safe Clock Monitor | Yes |
| In-Circuit Serial Programming (ICSP) | Yes |
| Корпус | 28-pin QFN (6x6 mm) with exposed thermal pad |
| Тип монтажа | Surface Mount |
| Уровень MSL | 1 (per Microchip packaging) |
| Статус RoHS | Compliant |
| Process Technology | CMOS |
Конфигурация выводов PIC18LF2523-I/ML
| Контакт 1 | RA2/AN2 — Digital I/O / Analog input channel 2 |
| Контакт 2 | RA3/AN3 — Digital I/O / Analog input channel 3 / VREF+ |
| Контакт 3 | RA4 — Digital I/O (open-drain on some revs) |
| Контакт 4 | RA5/AN4 — Digital I/O / Analog input channel 4 |
| Контакт 5 | VSS — Ground reference |
| Контакт 6 | OSC1 — Crystal oscillator input / external clock |
| Контакт 7 | OSC2 — Crystal oscillator output |
| Контакт 8 | RC0/T1OSO — Digital I/O / Timer1 oscillator output |
| Контакт 9 | RC1/T1OSI — Digital I/O / Timer1 oscillator input |
| Контакт 10 | RC2 — Digital I/O / CCP1 |
| Контакт 11 | RC3 — Digital I/O / SCL (MSSP) |
| Контакт 12 | RC4 — Digital I/O / SDA (MSSP) |
| Контакт 13 | RC5 — Digital I/O / SDO |
| Контакт 14 | RC6 — Digital I/O / TX (UART) |
| Контакт 15 | RC7 — Digital I/O / RX (UART) |
| Контакт 16 | VSS — Ground reference |
| Контакт 17 | VDD — Positive supply (2.0-5.5 V) |
| Контакт 18 | RB0/INT0 — Digital I/O / External interrupt 0 |
| Контакт 19 | RB1/INT1 — Digital I/O / External interrupt 1 |
| Контакт 20 | RB2/INT2 — Digital I/O / External interrupt 2 |
| Контакт 21 | RB3 — Digital I/O |
| Контакт 22 | RB4 — Digital I/O (interrupt-on-change) |
| Контакт 23 | RB5 — Digital I/O (interrupt-on-change) |
| Контакт 24 | RB6 — Digital I/O / PGC (ICSP clock) |
| Контакт 25 | RB7 — Digital I/O / PGD (ICSP data) |
| Контакт 26 | MCLR — Master Clear reset (active-low) |
| Контакт 27 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| Контакт 28 | RA1/AN1 — Digital I/O / Analog input channel 1 |
Типичное применение
PIC18LF2523-I/ML подходит для 6 применениеs: Battery-Powered Sensor Node, Industrial Control Panel HMI, Small Motor Driver / Fan Controller, Consumer White Goods User Interface, Portable Data Logger, Automotive Body Electronics (Non-Safety).
Battery-Powered Sensor Node
The PIC18LF2523-I/ML's 2.0 V to 5.5 V supply range and 10 MIPS throughput make it a strong fit for battery-powered sensor nodes running off a 3 V coin battery or two AA cells down to cutoff. The wide VDD window lets the design keep operating until the cell voltage drops to 2.0 V, typically adding 30-50% usable runtime over a 5 V-only PIC18F2523. The on-chip 10-bit ADC with up to 12 channels handles multiple analog sensors without external muxing, while the 32 KB Flash accommodates Modbus RTU or BLE-stack overlays for remote telemetry. Place a 100 nF decoupling cap directly at the VDD pin and route the exposed thermal pad to a continuous ground plane for thermal stability at full MIPS. Companion parts: PIC18LF2520-I/ML (simpler digital variant), MCP9700A (analog temperature sensor front-end).
Рекомендуется
Industrial Control Panel HMI
The PIC18LF2523-I/ML's 25 I/O pins drive up to 25 buttons, LEDs, or 7-segment displays without external muxing, while the on-chip UART (LIN-capable) interfaces to a backplane master. Industrial control panels often need deterministic response, which the PIC18 RISC core delivers at 10 MIPS, well above typical HMI loop times of 10-50 ms. The 32 KB Flash holds a Modbus RTU state machine plus keypad handling, and the 1536 bytes SRAM is more than sufficient for input buffering and display refresh. Wide 2.0-5.5 V VDD also tolerates unregulated 5 V industrial backplanes with significant ripple. Use ICSP on a 5-pin header for field firmware updates.
Рекомендуется
Small Motor Driver / Fan Controller
For small DC and BLDC motor control, the PIC18LF2523-I/ML combines the hardware 8x8 multiplier for commutation math with a 10-bit ADC for back-EMF sensing, all without external DSP hardware. The two on-chip analog comparators let you implement hardware overcurrent and zero-cross detection, reducing interrupt load and improving response time vs software-only designs. Drive MOSFETs directly from the I/O pins for sub-1 A loads, or interface to gate drivers such as the MCP14A0154 for larger half-bridges. The Fail-Safe Clock Monitor protects against oscillator failure in electrically noisy motor environments. Operating range -40 C to +85 C handles underhood and inside-enclosure industrial fan applications.
Рекомендуется
Consumer White Goods User Interface
The PIC18LF2523-I/ML is well suited as the user-interface controller in consumer white goods such as washing machines, dishwashers, and microwave ovens. The 32 KB Flash hosts the full state machine plus UI animations, and the 10-bit ADC supports capacitive-touch front panels via the CTMU peripheral. Two comparators enable sensorless water-level or humidity measurements. The 28-QFN (6x6 mm) package saves board area in space-constrained appliance front panels, and the industrial -40 C to +85 C range covers garage, kitchen, and laundry-room environments. Active-low MCLR and ICSP let production lines program firmware without removing the panel.
Рекомендуется
Portable Data Logger
For battery-powered portable data loggers, the PIC18LF2523-I/ML's wide 2.0-5.5 V supply lets you run directly from two alkaline or NiMH cells, while the 1536 bytes SRAM and 256 bytes EEPROM buffer measurements between sleep cycles. The internal 31 kHz to 8 MHz oscillator with 4x PLL eliminates the external 32 kHz crystal for low-power timekeeping, and the Fail-Safe Clock Monitor guards against oscillator drops in the field. The 12-channel 10-bit ADC supports thermistor, voltage, current, and pressure sensors in parallel without external muxing. With a deep-sleep current in the microamp range, multi-month runtime is feasible on a single 3 V coin cell at typical 1 sample/minute duty cycles.
Рекомендуется
Automotive Body Electronics (Non-Safety)
The PIC18LF2523-I/ML fits non-safety automotive body modules such as interior lighting controllers, seat-position memory, mirror adjusters, and accessory multiplexers, where its UART (LIN-capable) and CAN-friendly timing characteristics are leveraged. The 5 V regulator tolerance and -40 C to +85 C industrial temperature range cover cabin environments, while the Fail-Safe Clock Monitor protects against oscillator dropout in electrically noisy harness locations. The 32 KB Flash handles LIN 2.x slave stack plus application logic. For underhood or safety-critical loads, use the AEC-Q100-qualified PIC18 variants instead. Use TVS diodes on VDD and ICSP pins to survive reverse-battery and load-dump transients common in 12 V automotive systems.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC18LF2523-I/ML — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC18F2523-I/ML | PIC18LF2523T-I/ML | PIC18LF2423-I/ML | PIC18LF2520-I/ML | PIC18LF2510-I/ML |
|---|---|---|---|---|---|---|
| Package | 28-QFN (6x6 mm) | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| VDD Range | 2.0-5.5 V | 4.2-5.5 V | 2.0-5.5 V | 2.0-5.5 V | 2.0-5.5 V | 2.0-5.5 V |
| Flash Memory | 32 KB | 32 KB | 32 KB | 16 KB | 32 KB | 32 KB |
| SRAM | 1536 bytes | 1536 bytes | 1536 bytes | 768 bytes | 1536 bytes | 1536 bytes |
| ADC Channels | 12 x 10-bit | 12 x 10-bit | 12 x 10-bit | 12 x 10-bit | 10 x 10-bit | 10 x 10-bit |
| Comparators | 2 | 2 | 2 | 2 | 1 | 1 |
| Internal Oscillator | 31 kHz-8 MHz + 4x PLL (32 MHz) | 31 kHz-8 MHz + 4x PLL | 31 kHz-8 MHz + 4x PLL | 31 kHz-8 MHz + 4x PLL | 31 kHz-8 MHz + 4x PLL | 31 kHz-8 MHz (no PLL) |
| I/O Pins | 25 | 25 | 25 | 25 | 25 | 25 |
| Approx Unit Price (qty 1) | USD 6.10 | USD 5.85 | USD 6.10 (same die) | USD 5.40 | USD 5.75 | USD 5.10 |
Ключевые отличия
- Wide 2.0-5.5 V supply for battery-powered designs (против PIC18F2523-I/ML)
- 12-channel ADC vs older 10-channel variants (против PIC18LF2520-I/ML)
- Compact 6x6 mm QFN footprint with exposed thermal pad (против PIC18LF2523-I/SP (SPDIP-28))
- Fail-Safe Clock Monitor for noisy environments (против PIC18LF2510-I/ML)
Заметки по проектированию
The QFN-28 (6x6 mm) package has an exposed thermal pad (EP) on pin 29 (the central pad under the package). This pad MUST be soldered to a continuous ground plane with a 4x4 array of thermal vias (0.3 mm drill, 0.6 mm pad) to meet the datasheet's thermal resistance and to provide a low-inductance ground return for the analog and digital sections. Skipping this pad connection risks both thermal shutdown at full MIPS and ADC noise pickup. Keep the EP plane isolated from any switching traces crossing underneath; route only ground or quiet analog signals under the package footprint.
Place a 100 nF X7R ceramic decoupling capacitor as close as possible to VDD (pin 17) with the ground return via directly into the EP ground plane. Add a bulk 10 uF tantalum or aluminum-polymer cap on the same VDD node within 1 cm of the IC for transient suppression during high-current peripheral switching (ADC burst, UART LIN activity). For 2.0 V operation from batteries, ensure the bulk cap holds VDD above 2.0 V during peak load transients to avoid brown-out reset.
Reserve a 5-pin header (or 3 test pads + 2 ICSP pads) for In-Circuit Serial Programming (ICSP): MCLR/VPP, VDD, VSS, PGC (RB6), PGD (RB7). Keep the ICSP traces short (<50 mm) and avoid routing them near switching nodes or RF traces. This lets production lines program firmware without removing the panel, and enables field updates via a PICkit 5 or MPLAB Snap.
Do not leave MCLR floating - tie it to VDD through a 10 kohm pull-up and a 100 nF cap to ground for noise filtering. An unprotected MCLR pin resets the MCU under EMI transients. Also, configure unused I/O pins as outputs (low) rather than inputs to avoid spurious interrupts and to reduce quiescent current. Per the Microchip datasheet, the brown-out reset voltage should be configured to match the lowest expected VDD (typically BORV=1 for 2.0 V systems).
When using the ADC, set the I/O pins on the same analog port as analog inputs to digital outputs (low) to prevent cross-talk from switching outputs coupling into adjacent ADC channels. Place the AVRC reference decoupling (if using external VREF) within 5 mm of the VREF+ pin. For 12-bit effective resolution at 100 kSPS, use the ADC in a conversion cycle aligned to the ADC RC oscillator and avoid toggling I/O during the sample-and-hold window (last 1/2 TAD before acquisition).
Информация о соответствии
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - the standard PIC18LF2523 is industrial-grade only; use AEC-Q100-qualified PIC18 variants for automotive safety applications.