PIC16F18426-I/P - 8-bit XLP MCU, 28KB Flash, 32MHz, 14-PDIP | Microchip
N.º da peça: PIC16F18426-I/P ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $1.85 | $1,85 |
| 10 | $1.66 | $16,60 |
| 100 | $1.48 | $148,00 |
| 500 | $1.32 | $660,00 |
| 1.000 | $1.18 | $1.180,00 |
PIC16F18426-I/P Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable I/O peripherals on one die. The PIC16F18426 belongs to the 8-bit MCU category, which sits inside the broader hierarchy of microcontrollers -> embedded processors -> semiconductors. Compared with 16-bit and 32-bit MCUs, 8-bit parts such as this one trade compute throughput for deterministic instruction execution, very low power consumption, and a low BOM cost - ideal for high-volume sensor nodes and human-interface panels.
Key features of this part include Core Independent Peripherals (CIPs) such as a 12-bit Analog-to-Digital Converter with Computation (ADCC), a 5-bit Digital-to-Analog Converter (DAC), two PWM modules, a Complementary Waveform Generator (CWG), a Comparator, and serial interfaces including EUSART, SPI, and I2C. Functional Safety (FuSa) capability supports IEC 61508 SIL-classified designs.
The device uses a modified Harvard RISC architecture with a 14-bit instruction word and executes most instructions in one clock cycle. The eXtreme Low-Power (XLP) technology enables active current below 50 uA/MHz and sleep currents in the nanoampere range - critical for battery-powered products.
Typical applications include low-power IoT sensor nodes, battery-backed household appliances, LED lighting controllers, motor-control loops, and human-interface panels with capacitive touch.
A core design consideration is the 14-pin count: only 12 general-purpose I/O are exposed, so designers must plan pin budgeting carefully when adding EUSART, SPI/I2C, ADC, and PWM channels simultaneously.
This page synthesizes distributor pricing, drop-in compatible Microchip siblings, and practical design notes that complement the manufacturer datasheet and the DigiKey/Mouser product listings.
Alternativas drop-in para PIC16F18426-I/P — 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 PIC16F18426-I/P (mesmo formato e footprint) — diferindo em Package, Program Memory (Flash), I/O Pins, ADC, DAC.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16F18446-I/P
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16F18346-I/P
✅ Drop-In✓ Em estoque
$1.32 / unidade
Ver ficha técnica →PIC16F1826-I/P
✅ Drop-In✓ Em estoque
$1.48 / unidade
Ver ficha técnica →PIC16F18325-I/P
✅ Drop-In✓ Em estoque
$1.1 / unidade
Ver ficha técnica →PIC16F18424-I/P
✅ Drop-In✓ Em estoque
$0.81 / unidade
Ver ficha técnica →PIC16F18426-I/P Classificações máximas e características elétricas
| Architecture | 8-bit PIC16 RISC (modified Harvard) |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data SRAM | 2 KB |
| CPU Speed | Up to 32 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V |
| I/O Pins | 12 (on 14-pin PDIP) |
| ADC | 12-bit ADCC |
| DAC | 5-bit DAC |
| PWM Channels | 2 x PWM, 1 x CWG (Complementary Waveform Generator) |
| Comparators | Yes |
| Serial Interfaces | EUSART, SPI, I2C |
| Encapsulamento | 14-pin PDIP (through-hole) |
| Temperatura de operação | -40 C to +85 C (Industrial) |
| Low-Power Technology | XLP (eXtreme Low-Power) |
| Functional Safety | FuSa-capable (IEC 61508) |
| Tipo de montagem | Through-Hole (THT) |
Configuração de pinos do PIC16F18426-I/P
| Pino 1 | RA5/CLKIN — General-purpose I/O / external clock input |
| Pino 2 | RA4 — General-purpose I/O |
| Pino 3 | RA3/MCLR — General-purpose I/O / Master Clear (reset, active-low) |
| Pino 4 | RA2 — General-purpose I/O / analog input |
| Pino 5 | RA1/ICSPCLK — General-purpose I/O / ICSP clock |
| Pino 6 | RA0/ICSPDAT — General-purpose I/O / ICSP data |
| Pino 7 | VSS — Ground reference |
| Pino 8 | RC5 — General-purpose I/O |
| Pino 9 | RC4 — General-purpose I/O |
| Pino 10 | RC3 — General-purpose I/O |
| Pino 11 | RC2 — General-purpose I/O |
| Pino 12 | RC1 — General-purpose I/O |
| Pino 13 | RC0 — General-purpose I/O |
| Pino 14 | VDD — Positive supply voltage (1.8 V to 5.5 V) |
Aplicações típicas
PIC16F18426-I/P é adequado para 7 aplicaçãos: Battery-Powered IoT Sensor Node, White-Good Appliance Control Board, LED Lighting Controller, Automotive Body Electronics (Sub-System), Capacitive-Touch User Interface, Industrial Sensor Transmitter (4-20 mA), Hobbyist and Educational Development Platform.
Battery-Powered IoT Sensor Node
The PIC16F18426-I/P fits ultra-low-power IoT sensor nodes because its XLP technology delivers active currents below 50 uA/MHz and nanoamp-level sleep currents with full RAM retention. The 12-bit ADCC reads battery or sensor voltage rails directly without an external amplifier, while the 5-bit DAC supports set-point control loops. At a 1% duty cycle with a CR2032 cell, expected lifetime exceeds 5 years. The 14-pin PDIP footprint simplifies through-hole prototyping on perfboard or in DFM-friendly enclosures, and the 28 KB Flash leaves headroom for Over-The-Air firmware updates.
Recomendado
White-Good Appliance Control Board
In dishwashers, washing machines, and refrigerators the PIC16F18426-I/P provides the deterministic real-time control needed for motor sequencing, valve actuation, and user-interface polling. The Complementary Waveform Generator (CWG) drives MOSFET half-bridges for brushless-DC pump motors, while two PWM channels control proportional valves. Functional Safety (FuSa) capability accelerates IEC 60730 class B certification for home-appliance safety firmware. With 28 KB Flash and 2 KB SRAM, designers can host state-machine control code plus a capacitive-touch UI library on a single 14-pin PDIP device.
Recomendado
LED Lighting Controller
The PIC16F18426-I/P is well suited to dimmable LED drivers where the 12-bit ADCC samples a wall-encoder potentiometer or 0-10 V dim signal, and the CWG drives a synchronous buck FET pair with dead-band control. XLP technology keeps standby power below 50 mW, helping designs meet ENERGY STAR and EU Ecodesign standby limits. The 32 MHz CPU clock supports flicker-free PWM above 1 kHz, which exceeds the IEEE 1789 no-effect risk threshold for healthy observers. Through-hole 14-pin PDIP packaging also enables easy rework in field-serviceable luminaires.
Recomendado
Automotive Body Electronics (Sub-System)
Within automotive body controllers the PIC16F18426-I/P manages LIN sub-node functions such as mirror adjust, ambient lighting, and seat-position memory. The EUSART handles LIN 2.x protocol when paired with an external transceiver, and the 12-bit ADCC reads potentiometer wiper voltages. FuSa-capable firmware development supports ISO 26262 ASIL-classified subsystems. Although this industrial-temperature -I/P variant is not AEC-Q100 qualified, it can serve 12 V body-electronics prototyping where AEC-Q100 qualification is deferred to a sister -E or -VAO suffix part on the same 14-pin PDIP footprint.
Recomendado
Capacitive-Touch User Interface
The PIC16F18426-I/P hosts Microchip's mTouch capacitive-touch firmware library, supporting up to 12 touch channels on the 14-pin PDIP variant - exactly matching the 12 available general-purpose I/O pins. The 12-bit ADCC provides capacitive-sensing charge-time measurement with no external analog front-end, and the 5-bit DAC tunes the touch threshold for panel overlays. EUSART and I2C deliver touch events to a host processor or display controller. With 28 KB Flash, designers can run full mTouch plus a UI state machine without an external memory device.
Recomendado
Industrial Sensor Transmitter (4-20 mA)
The PIC16F18426-I/P implements loop-powered 4-20 mA sensor transmitters where XLP nanoamp sleep current extends battery or harvested-energy budget during idle periods. The 12-bit ADCC digitizes bridge or thermocouple inputs, the 5-bit DAC controls the loop-current modulation, and the EUSART interfaces to a digital calibration tool during factory trim. The industrial -40 C to +85 C temperature rating ensures operation in outdoor instrumentation cabinets. The 14-pin PDIP through-hole package simplifies hand-soldered prototypes and field-replaceable modules.
Recomendado
Hobbyist and Educational Development Platform
The PIC16F18426-I/P is a strong teaching platform because the through-hole 14-pin PDIP form factor is breadboard-friendly, while the modern peripheral set (ADCC, CWG, DAC, EUSART) reflects the architecture used in contemporary commercial products. With MPLAB X, XC8 compiler, and the PICkit 4 programmer, students can build firmware for LED PWM, UART communication, and capacitive touch within a single lab session. The 28 KB Flash budget supports moderately complex C projects while preserving register-level insight into PIC16 assembly.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16F18426-I/P — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16F18446-I/P | PIC16F18346-I/P | PIC16F1826-I/P | PIC16F18325-I/P | PIC16F18424-I/P |
|---|---|---|---|---|---|---|
| Package | 14-pin PDIP | 14-pin PDIP - same | 14-pin PDIP - same | 14-pin PDIP - same | 14-pin PDIP - same | 14-pin PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 28 KB (16K x 14) | 28 KB | 16 KB (-43%) | 14 KB (-50%) | 14 KB (-50%) | 7 KB (-75%) |
| Data SRAM | 2 KB | 2 KB | 1 KB | 384 B | 1 KB | 512 B |
| Max CPU Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 |
| ADC Resolution | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 10-bit ADC | 10-bit ADC | 12-bit ADCC |
| Functional Safety (FuSa) | Yes | Yes | No | No | No | No |
Principais diferenciais
- Largest Flash in the 14-pin PDIP PIC16F184x4x family (vs PIC16F18424-I/P)
- Functional Safety (FuSa) capability unique within the 14-pin PDIP PIC16 family (vs PIC16F18346-I/P)
- Modern 12-bit ADCC with hardware averaging versus older 10-bit ADC (vs PIC16F1826-I/P)
Notas de projeto
Estimated: At 32 MHz and 5 V, the PIC16F18426 active current is about 6 mA. For battery designs switch to the internal 31 kHz LF oscillator and use Sleep + Watchdog Timer wake-ups; XLP Sleep current is below 50 nA typical with full RAM retention. Always place a 100 nF decoupling capacitor within 5 mm of VDD (pin 14) and a 10 uF bulk capacitor at the supply entry. Use the 'LF' PIC16LF18426 variant for 1.8-3.6 V systems to reduce core losses roughly 30% versus the wide-Vdd 'F' device.
Keep the ICSP lines RA0/ICSPDAT and RA1/ICSPCLK accessible in the PCB layout so a PICkit 4 can program the device in-circuit. MCLR/RA3 must have a 10 kohm pull-up to VDD and a 100 nF cap to ground for in-circuit programming reliability; do not strap MCLR directly to VDD. For EMI-sensitive designs, route the 32 MHz crystal traces (if used) as short, ground-symmetric pairs and guard them with a ground pour to minimize radiated noise coupling into the ADCC inputs.
The 12-bit ADCC achieves best performance with an input source impedance below 1 kohm and a 100 nF local bypass on the analog pin. Enable the ADCC's hardware averaging and accumulation features to obtain effective >14-bit ENOB for low-bandwidth sensor measurements, which matters when digitizing thermocouple or strain-gauge outputs. Route analog and digital grounds as a star-converged single net under the MCU; avoid daisy-chained ground returns that introduce common-mode noise.
Do not assume all 14 pins are usable as GPIO: pins 5/6 (RA1/RA0) double as ICSP and pins 7/14 are VSS/VDD, leaving 12 GPIO. Confusing the 'F' wide-voltage variant with the 'LF' low-voltage variant leads to EEPROM corruption below 1.8 V. The EUSART peripheral supports both asynchronous UART and synchronous SPI but requires explicit PPS (Peripheral Pin Select) configuration on the PIC16F18426, unlike older PIC16F1xxx families.
Informações de conformidade
AEC-Q100 not qualified for the -I/P industrial-temperature variant. AEC-Q100 qualified -VAO suffix parts are available separately. Compliance fields marked unknown pending explicit verification on Microchip product page or DigiKey compliance section.
