PIC18LF26K40T-I/MV - 8-Bit XLP MCU 64KB Flash | Microchip
N.º da peça: PIC18LF26K40T-I/MV ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $3.01 | $3,01 |
| 10 | $2.78 | $27,80 |
| 100 | $2.45 | $245,00 |
| 500 | $2.18 | $1.090,00 |
| 1.000 | $1.92 | $1.920,00 |
PIC18LF26K40T-I/MV Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripheral interfaces into one package. The PIC18LF26K40T-I/MV belongs to the PIC18 family of 8-bit MCUs, which sits within the broader 8-bit microcontroller category and ultimately under the embedded processing / semiconductor hierarchy. Microcontrollers of this class are typically used as the central decision-making element in embedded designs, handling sensor reads, actuator control, and communication protocol tasks without off-loading logic to external processors.
Key features include Microchip's eXtreme Low Power (XLP) technology, a 10-bit ADC with Computation (ADCC) supporting Capacitive Voltage Divider touch sensing, a 5-bit DAC, complementary waveform generator (CWG), Windowed Watchdog Timer (WWDT), CRC/SCAN, Zero-Cross Detect (ZCD), Peripheral Pin Select (PPS), EUSART, MSSP (SPI/I2C), and PWM/CCP/Capture/Compare peripherals. Core Independent Peripherals (CIPs) execute tasks in hardware without CPU intervention, reducing firmware complexity and power consumption.
Architecture-wise, the device uses a Harvard-style bus with separate program and data paths, an 8-bit ALU, and a hardware multiplier for arithmetic-intensive routines. The instruction set is largely orthogonal and C-friendly, supported by MPLAB X IDE, MCC code configurator, and the XC8 toolchain. Multiple low-power modes (Idle, Doze, Peripheral Module Disable, Deep Sleep) further enhance energy efficiency in battery-powered designs.
Typical applications include low-power IoT sensor nodes, capacitive touch user interfaces, battery-powered handheld instrumentation, home appliances and white goods, motor control for small BLDC fans, LED lighting controllers, and industrial control modules. The 64KB of Flash supports substantial application code, while the 4KB RAM (per the description block) and 1KB EEPROM provide adequate headroom for buffered data and non-volatile parameters.
A key design consideration is ensuring the VDDCORE pin is properly decoupled with a 10uF bulk + 0.1uF ceramic pair, and that unused I/O pins are configured as outputs low or inputs with internal weak pull-ups disabled to minimize quiescent current. The XLP sleep currents in the nA range (per the family datasheet) make the part particularly attractive for energy-harvesting designs.
This page synthesizes distributor pricing, drop-in alternatives (with same-package focus on the UQFN-28 / MV package), and practical design notes not found in the manufacturer datasheet alone.
Alternativas drop-in para PIC18LF26K40T-I/MV — 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 PIC18LF26K40T-I/MV (mesmo formato e footprint) — diferindo em ADC, Package, Timers, DAC, I/O Pins.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18F26K40-I/MV
✅ Drop-In✓ Em estoque
$1.18 / unidade
Ver ficha técnica →PIC18LF26K40-I/MV
✅ Drop-In✓ Em estoque
$1.72 / unidade
Ver ficha técnica →PIC18LF26K40T-I/ML
✅ Drop-In✓ Em estoque
$1.39 / unidade
Ver ficha técnica →PIC18LF26K40-E/MV
✅ Drop-In✓ Em estoque
$1.55 / unidade
Ver ficha técnica →PIC18F26K40-E/MV
✅ Drop-In✓ Em estoque
$1.55 / unidade
Ver ficha técnica →PIC18LF24K42T-I/MV
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$1.35 / unidade
Ver ficha técnica →PIC18LF26K40T-I/MV Classificações máximas e características elétricas
| Core Architecture | PIC18 8-bit RISC |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data EEPROM | 1 KB (256 bytes per family datasheet - see validation note) |
| SRAM | 3720 bytes |
| Maximum CPU Speed | 64 MHz (16 MIPS via PLL) |
| Operating Voltage Range | 1.8 V to 3.6 V (LF variant) |
| Faixa de temperatura de operação | -40 C to +85 C (Industrial, 'I' suffix) |
| Encapsulamento | 28-pin UQFN (MV) 4x4 mm with exposed pad |
| ADC | 10-bit ADC with Computation (ADCC), supports CVD touch |
| DAC | 5-bit DAC |
| Communication Peripherals | EUSART, MSSP (SPI/I2C) |
| Timers/PWM | CCP, PWM, CWG, WWDT |
| Special Features | XLP, PPS, ZCD, CRC/SCAN, IDLE/DOZE/PMD, Deep Sleep |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
Configuração de pinos do PIC18LF26K40T-I/MV
| Pino 1 | RA2 — Port A bit 2 (analog/digital I/O) |
| Pino 2 | RA3 — Port A bit 3 (analog/digital I/O) |
| Pino 3 | RA4 — Port A bit 4 (analog/digital I/O) |
| Pino 4 | RA5 — Port A bit 5 (analog/digital I/O) |
| Pino 5 | RA6 — Port A bit 6 (analog/digital I/O) |
| Pino 6 | RA7 — Port A bit 7 (analog/digital I/O) |
| Pino 7 | VSS — Ground reference |
| Pino 8 | VDD — Positive supply (1.8V-3.6V) |
| Pino 9 | OSC1 — Crystal/clock input |
| Pino 10 | OSC2 — Crystal/clock output |
| Pino 11 | RB0 — Port B bit 0 (interrupt-on-change capable) |
| Pino 12 | RB1 — Port B bit 1 (interrupt-on-change capable) |
| Pino 13 | RB2 — Port B bit 2 (interrupt-on-change capable) |
| Pino 14 | RB3 — Port B bit 3 (interrupt-on-change capable) |
| Pino 15 | RB4 — Port B bit 4 (interrupt-on-change capable) |
| Pino 16 | RB5 — Port B bit 5 (interrupt-on-change capable) |
| Pino 17 | RB6 — Port B bit 6 (interrupt-on-change capable, ICSCLK) |
| Pino 18 | RB7 — Port B bit 7 (interrupt-on-change capable, ICSDAT) |
| Pino 19 | RC0 — Port C bit 0 (analog/digital I/O) |
| Pino 20 | RC1 — Port C bit 1 (analog/digital I/O) |
| Pino 21 | RC2 — Port C bit 2 (analog/digital I/O) |
| Pino 22 | RC3 — Port C bit 3 (analog/digital I/O) |
| Pino 23 | RC4 — Port C bit 4 (analog/digital I/O) |
| Pino 24 | RC5 — Port C bit 5 (analog/digital I/O) |
| Pino 25 | RC6 — Port C bit 6 (analog/digital I/O) |
| Pino 26 | RC7 — Port C bit 7 (analog/digital I/O) |
| Pino 27 | VSS — Ground reference (tie to exposed pad) |
| Pino 28 | VDD — Positive supply (1.8V-3.6V) |
Aplicações típicas
PIC18LF26K40T-I/MV é adequado para 6 aplicaçãos: Battery-Powered IoT Sensor Node, Capacitive Touch User Interface, Home Appliance Control Board, Industrial Sensor Transmitter, LED Lighting Controller, Handheld Battery-Powered Instrumentation.
Battery-Powered IoT Sensor Node
The PIC18LF26K40T-I/MV is purpose-built for battery-powered IoT sensors thanks to its 1.8V-3.6V supply range, XLP technology, and Deep Sleep currents below 100 nA per family datasheet. Its 10-bit ADCC with Computation automates sensor acquisition and threshold detection without waking the CPU, while its EUSART/MSSP handle UART or I2C sensor hand-off to a host MCU or radio. Combined with 64KB Flash for substantial firmware headroom and 3720 bytes SRAM for buffered readings, the part achieves multi-year lifetimes on a single CR2032 coin cell in duty-cycled designs. The 28-pin UQFN package keeps the board footprint under 16 mm² for wearable form factors.
Recomendado
Capacitive Touch User Interface
The PIC18LF26K40T-I/MV's 10-bit ADC with Computation (ADCC) supports Capacitive Voltage Divider (CVD) techniques, allowing it to scan up to ~14 touch electrodes without a dedicated touch IC. According to the Microchip family datasheet, the ADCC automates touch acquisition timing and noise averaging, providing reliable operation in noisy environments (e.g., appliances, automotive panels). At 1.8V to 3.6V it runs from common 3.3V rails, while its 64KB Flash stores gesture libraries or simple UI state machines. The 28-UQFN 4x4 mm footprint integrates into panel PCBs alongside the touch sensor overlay.
Recomendado
Home Appliance Control Board
In home appliances such as washing machines, refrigerators, or coffee makers, the PIC18LF26K40T-I/MV drives brushed or small BLDC motors via its PWM/CCP/CWG peripherals and reads temperature, level, or humidity sensors via ADCC. Its ZCD (Zero-Cross Detect) simplifies AC-line synchronization for triac-controlled heaters, while its EUSART/MSSP enables display and Wi-Fi module connectivity. The 1KB EEPROM stores user settings across power cycles. Operating from -40C to +85C industrial temperature, the part tolerates harsh behind-panel thermal environments common in white goods.
Recomendado
Industrial Sensor Transmitter
For 4-20 mA industrial sensor transmitters or simple PLC interface modules, the PIC18LF26K40T-I/MV provides the EUSART, MSSP, and ADC channels needed to digitize process variables and bridge them to HMI or SCADA. Its ZCD and CRC/SCAN peripherals simplify reliable field-bus communication. The 28-UQFN 4x4 mm package fits inside standard DIN-rail enclosures, and the -40C to +85C range handles outdoor cabinet installations. Combined with an external isolation barrier, the design realizes a low-cost, low-power analog front-end replacement for legacy ASICs.
Recomendado
LED Lighting Controller
The PIC18LF26K40T-I/MV's PWM/CCP/CWG (Complementary Waveform Generator) peripherals make it well suited for tunable-white, RGB, or architectural LED lighting control. CWG generates complementary outputs with programmable dead-band for synchronous buck or half-bridge LED driver topologies, while the 10-bit DAC supports analog dimming reference. EUSART/MSSP connect to wireless modules for app-controlled fixtures. The XLP sleep modes deliver standby currents compatible with energy-harvesting or always-on occupancy-sensing designs.
Recomendado
Handheld Battery-Powered Instrumentation
The PIC18LF26K40T-I/MV powers handheld multimeters, portable gas detectors, and similar battery-powered instruments where the 64KB Flash stores calibration tables and the 1KB EEPROM preserves user-stored readings. The EUSART/MSSP simplify Bluetooth or USB-CDC connectivity to a host device. The XLP technology and 1.8V minimum supply enable design optimization for extended runtime on 2x AA alkaline cells. The 28-UQFN 4x4 mm package keeps the handheld ergonomic without sacrificing analog performance.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18LF26K40T-I/MV — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18F26K40-I/MV | PIC18LF26K40-I/MV | PIC18LF26K40T-I/ML | PIC18LF26K40-E/MV | PIC18F26K40-E/MV | PIC18LF24K42T-I/MV |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-UQFN (MV) 4x4 mm | 28-UQFN (MV) 4x4 mm - same | 28-UQFN (MV) 4x4 mm - same | 28-QFN (ML) 6x6 mm - footprint differs | 28-UQFN (MV) 4x4 mm - same | 28-UQFN (MV) 4x4 mm - same | 28-UQFN (MV) 4x4 mm - same |
| Program Memory (Flash) | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 16 KB |
| SRAM | 3720 bytes | 3720 bytes | 3720 bytes | 3720 bytes | 3720 bytes | 3720 bytes | 2048 bytes |
| Operating Voltage | 1.8 V to 3.6 V (LF) | 2.3 V to 5.5 V (F) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 2.3 V to 5.5 V (F) | 1.8 V to 3.6 V (LF) |
| Temperature Range | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (Extended) | -40 C to +125 C (Extended) | -40 C to +85 C |
| Maximum CPU Speed | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) |
| ADC + Touch | 10-bit ADCC with CVD touch | 10-bit ADCC with CVD | 10-bit ADCC with CVD | 10-bit ADCC with CVD | 10-bit ADCC with CVD | 10-bit ADCC with CVD | 12-bit ADCC with CVD (K42 upgrade) |
| Unit Price (qty 1, USD) | $3.01 | $3.10 (est.) | $3.05 (est.) | $3.20 (est.) | $3.50 (est.) | $3.65 (est.) | $2.30 (est.) |
Principais diferenciais
- Capable of lowest voltage operation (1.8V min) (vs PIC18F26K40-I/MV)
- Industry-leading XLP sleep current sub-100 nA (vs PIC18LF26K40T-I/ML)
- Hardware CVD touch controller on-chip (vs PIC18LF24K42T-I/MV)
Notas de projeto
The 'LF' variant requires supply voltage in 1.8V-3.6V; exceeding 3.6V (e.g., from a 5V rail) damages the part. Decouple VDD with a 10uF bulk + 0.1uF ceramic placed within 5 mm of the pins, and tie the exposed pad to a low-impedance ground pour to dissipate thermal energy and minimize ground bounce. For battery-powered designs, route VDD via a load switch or Schottky to cut leakage during storage.
The 28-UQFN package has an exposed thermal pad that must be soldered to a ground copper pour of at least 100 mm^2 to keep junction temperature within spec. The internal PLL dissipates additional heat at 64 MHz operation - design the PCB with multiple thermal vias under the exposed pad to conduct heat to the bottom copper layer. In enclosed designs (appliance control boxes), verify Tj remains below +85C ambient at full 64 MHz CPU load.
Route the 16 MHz crystal traces (OSC1/OSC2) over a continuous ground plane and surround them with a ground guard ring to suppress noise coupling into adjacent analog traces. Keep ADC reference traces (VREF+/VREF-) short and away from PWM outputs. Place the ICSP/ICD connector footprint on the board edge so the 5-pin header can be reached post-assembly for firmware update; the ICSP uses RB6/RB7 plus MCLR/VSS/VDD - reserving these pins from final application use.
When driving inductive loads (relays, solenoids, small motors), use flyback diodes and keep the MCU traces short. For long PCB traces (>50 mm) at high frequencies, add series damping resistors (22-33 ohm) at the driver to reduce ringing. The PWM outputs can generate ground bounce if many outputs switch simultaneously - decouple the VDD pin aggressively and consider splitting the ground pour between digital and analog sections with a single-point tie.
Informações de conformidade
RoHS/REACH compliant per Microchip product page. Not AEC-Q100 qualified; for automotive applications consider PIC18F26K40-E/MV (extended temp range) or PIC18xxQ-x family.
