PIC18F66J16T-I/PT - 8-bit 48MHz 96KB Flash MCU | Microchip
N.º de pieza: PIC18F66J16T-I/PT ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $9.85 | $9,85 |
| 10 | $8.92 | $89,20 |
| 100 | $7.64 | $764,00 |
| 500 | $6.55 | $3.275,00 |
| 1.000 | $5.82 | $5.820,00 |
PIC18F66J16T-I/PT Descripción general
What is a PIC18F microcontroller? The PIC18F is Microchip's high-performance 8-bit microcontroller family that combines a RISC architecture, hardware multiplier, nanoWatt power management, and rich peripheral integration. In the embedded system hierarchy, a PIC18F sits between simpler PIC16F parts and the 16-bit dsPIC/PIC24 families, occupying the mainstream 8-bit performance tier for industrial control, user interfaces, and connectivity gateway applications.
Key features of the PIC18F66J16 include 96 KB Flash with 10,000 endurance cycles and 20-year retention, 3,936 bytes of RAM, an internal 8 MHz oscillator, parallel master port (PMP), enhanced ICD with three hardware breakpoints, and nanoWatt technology for sleep-mode current minimization. The device operates from 2.0 V to 3.6 V with 5V-tolerant digital inputs on selected I/O pins, allowing direct interface to legacy 5V logic without level shifters. Pin count is 64 in a TQFP package with 51 available I/O lines.
Architecturally, the PIC18F66J16 uses a 16-bit instruction word with an 8-bit data path, a hardware multiply engine, and C-compiler-friendly memory layout that supports the MPLAB XC8 toolchain. The 48 MHz oscillator drives a 4-phase pipeline delivering 10 MIPS, while the nanoWatt feature set (multiple idle modes, ultra-low-power wake-up, internal oscillator tuning) enables battery-backed and energy-harvesting designs without sacrificing deterministic real-time response.
Typical applications include industrial control panels, USB and CAN bridge nodes, LCD graphic displays, sensor hubs, home appliances, and medical instrumentation. The wide operating voltage range and 5V-tolerant inputs also suit automotive body and HVAC subsystems where direct connection to 5V sensors is required.
When designing with this MCU, use the MPLAB X IDE and the PICkit or ICD programmer for firmware development. Decoupling must include at least one 100 nF ceramic capacitor per VDD/VSS pair, with a bulk 4.7-10 uF cap at the regulator output, and unused I/O should be configured as outputs low to minimize sleep current.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the standalone Microchip datasheet.
Alternativas directas para PIC18F66J16T-I/PT — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC18F66J16T-I/PT (mismo factor de forma y huella) — difiere en Package, I/O Pins, Operating Temperature, Program Memory (Flash), ADC.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC18F66J15T-I/PT
✅ Sustitución directa✓ En stock
$6.72 / unidad
Ver hoja de datos →PIC18F66J15-I/PT
✅ Sustitución directa✓ En stock
$4.2 / unidad
Ver hoja de datos →PIC18F66J11T-I/PT
✅ Sustitución directa✓ En stock
$4.61 / unidad
Ver hoja de datos →PIC18F65J94-I/PT
✅ Sustitución directa✓ En stock
$3.89 / unidad
Ver hoja de datos →PIC18F65J11-I/PT
✅ Sustitución directa✓ En stock
$4.35 / unidad
Ver hoja de datos →PIC18F65K90T-I/MR
✅ Sustitución directa✓ En stock
$1.95 / unidad
Ver hoja de datos →PIC18F66J16T-I/PT Valores máximos y características eléctricas
| Core Architecture | PIC18 8-bit |
| Family | PIC18F87J11 Family (PIC18 J-series) |
| Program Memory (Flash) | 96 KB (48K x 16) |
| RAM | 3,936 bytes |
| Maximum CPU Speed | 48 MHz (10 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| I/O Pins | 51 (5V-tolerant digital inputs) |
| Encapsulado | 64-pin TQFP (PT) 10x10 mm |
| Tipo de montaje | Surface Mount |
| Temperatura de funcionamiento | -40 C to +85 C (Industrial, 'I' suffix) |
| Internal Oscillator | 8 MHz (factory calibrated) |
| Communication Interfaces | 2x I2C/SPI, 2x UART (EUSART) |
| Parallel Master Port (PMP) | Yes |
| Hardware Debug | Enhanced ICD with 3 HW breakpoints |
| Power-Saving Technology | nanoWatt (multiple idle/sleep modes) |
| Flash Endurance | 10,000 erase/write cycles, 20-year retention |
| Estado RoHS | Compliant |
Configuración de pines de PIC18F66J16T-I/PT
| Pin 1 | RP2/RG2 — Remappable peripheral / PORTG I/O |
| Pin 2 | RP3/RG3 — Remappable peripheral / PORTG I/O |
| Pin 3 | RP4/RG4 — Remappable peripheral / PORTG I/O |
| Pin 4 | RP5/RG5 — Remappable peripheral / PORTG I/O |
| Pin 5 | RP6/RG6 — Remappable peripheral / PORTG I/O |
| Pin 6 | RP7/RG7 — Remappable peripheral / PORTG I/O |
| Pin 7 | RC1 — PORTC I/O |
| Pin 8 | RC2 — PORTC I/O |
| Pin 9 | RC3 — PORTC I/O |
| Pin 10 | RC4 — PORTC I/O |
| Pin 11 | VDD — Positive supply (2.0-3.6 V) |
| Pin 12 | VSS — Ground reference |
| Pin 13 | RC5 — PORTC I/O |
| Pin 14 | RC6 — PORTC I/O / TX1 |
| Pin 15 | RC7 — PORTC I/O / RX1 |
| Pin 16 | RD0 — PORTD I/O / PMP |
| Pin 17 | RD1 — PORTD I/O / PMP |
| Pin 18 | RD2 — PORTD I/O / PMP |
| Pin 19 | RD3 — PORTD I/O / PMP |
| Pin 20 | RD4 — PORTD I/O / PMP |
| Pin 21 | RD5 — PORTD I/O / PMP |
| Pin 22 | RD6 — PORTD I/O / PMP |
| Pin 23 | RD7 — PORTD I/O / PMP |
| Pin 24 | VSS — Ground reference |
| Pin 25 | VDD — Positive supply (2.0-3.6 V) |
| Pin 26 | RE0 — PORTE I/O / PMP |
| Pin 27 | RE1 — PORTE I/O / PMP |
| Pin 28 | RE2 — PORTE I/O / PMP |
| Pin 29 | RE3 — PORTE I/O / PMP |
| Pin 30 | RE4 — PORTE I/O / PMP |
| Pin 31 | RE5 — PORTE I/O / PMP |
| Pin 32 | RE6 — PORTE I/O / PMP |
| Pin 33 | RE7 — PORTE I/O / PMP |
| Pin 34 | RF0 — PORTF I/O / analog input |
| Pin 35 | RF1 — PORTF I/O / analog input |
| Pin 36 | RF2 — PORTF I/O / analog input |
| Pin 37 | RF3 — PORTF I/O / analog input |
| Pin 38 | RF4 — PORTF I/O / analog input |
| Pin 39 | RF5 — PORTF I/O / analog input |
| Pin 40 | RF6 — PORTF I/O / analog input |
| Pin 41 | RF7 — PORTF I/O / analog input |
| Pin 42 | AVDD — Analog positive supply |
| Pin 43 | AVSS — Analog ground |
| Pin 44 | RH0 — PORTH I/O |
| Pin 45 | RH1 — PORTH I/O |
| Pin 46 | RH2 — PORTH I/O |
| Pin 47 | RH3 — PORTH I/O |
| Pin 48 | RH4 — PORTH I/O |
| Pin 49 | RH5 — PORTH I/O |
| Pin 50 | RH6 — PORTH I/O |
| Pin 51 | RH7 — PORTH I/O |
| Pin 52 | RA0 — PORTA I/O / analog input |
| Pin 53 | RA1 — PORTA I/O / analog input |
| Pin 54 | RA2 — PORTA I/O / analog input |
| Pin 55 | RA3 — PORTA I/O / analog input |
| Pin 56 | RA4 — PORTA I/O |
| Pin 57 | RA5 — PORTA I/O |
| Pin 58 | VDD — Positive supply (2.0-3.6 V) |
| Pin 59 | VSS — Ground reference |
| Pin 60 | OSC1 — Crystal/oscillator input |
| Pin 61 | OSC2 — Crystal/oscillator output |
| Pin 62 | RB0 — PORTB I/O / programming |
| Pin 63 | RB1 — PORTB I/O / programming |
| Pin 64 | MCLR — Master clear reset (active low) |
Aplicaciones típicas
PIC18F66J16T-I/PT es adecuado para 7 aplicacións: Industrial Control Panel, USB / Serial Bridge Node, LCD Graphic Display Controller, Home Appliance Control, Sensor Hub / Data Aggregator, Medical Instrumentation Interface, Educational / Development Platform.
Industrial Control Panel
The PIC18F66J16T-I/PT suits industrial control panels thanks to its 48 MHz core delivering 10 MIPS, 51 general-purpose I/O lines with selected 5V-tolerant digital inputs for direct sensor interface, and the parallel master port (PMP) that drives character or graphic LCDs without external logic. The industrial -40 C to +85 C operating range handles factory floor temperatures, while dual I2C/SPI plus dual UART ports connect to motor drivers, ADC front-ends, and fieldbus transceivers in parallel. The nanoWatt feature set reduces standby power during panel sleep modes, and 96 KB of Flash accommodates state-machine logic plus bootloader plus diagnostic protocols on a single device.
Recomendado
USB / Serial Bridge Node
The PIC18F66J16T-I/PT functions as a USB-to-UART or USB-to-SPI bridge thanks to its two EUSART ports and two MSSP (I2C/SPI) peripherals, allowing simultaneous conversion between USB and two legacy serial channels. The 3,936 bytes of RAM buffer high-throughput packet traffic, while the 96 KB Flash hosts USB stack plus class firmware plus vendor commands without external memory. Operating at 3.3 V with 5V-tolerant digital inputs simplifies coexistence with 5V hosts, and the 48 MHz core handles full-speed USB polling with margin for protocol parsing.
Recomendado
LCD Graphic Display Controller
The PIC18F66J16T-I/PT's parallel master port (PMP) drives 8080/6800-style graphic LCDs directly, offloading pixel streaming from the CPU and freeing MIPS for GUI logic. With 48 MHz / 10 MIPS, the MCU can refresh small QVGA panels while still handling touch-screen sampling via I2C, push-button inputs, and serial command interfaces. The 96 KB Flash stores font tables, bitmap assets, and the GUI state machine, while 3,936 bytes RAM holds frame buffers for monochrome or low-color displays.
Recomendado
Home Appliance Control
White-goods and HVAC subsystems benefit from the PIC18F66J16T-I/PT's combination of 5V-tolerant digital inputs (for direct connection to 5V triac feedback networks), dual UART for diagnostic and main-board communication, and nanoWatt low-power modes for standby. The 48 MHz core runs real-time control loops for motor or valve actuation, while 96 KB of Flash supports application firmware plus optional RF protocol stacks for connected appliances. The -40 C to +85 C industrial range covers refrigerator, washing machine, and oven control environments.
Recomendado
Sensor Hub / Data Aggregator
Sensor hubs aggregating I2C environmental sensors, SPI IMUs, and UART GPS modules fit naturally on the PIC18F66J16T-I/PT's dual I2C/SPI and dual UART peripheral set. The 48 MHz CPU fuses multi-rate sensor streams while 3,936 bytes RAM holds intermediate sample buffers, and 96 KB Flash stores the fusion algorithm plus logging drivers. nanoWatt sleep modes cut quiescent current between sensor reads, extending battery life in remote or wireless sensor deployments; PMP can also drive a small status LCD or seven-segment display for local indication.
Recomendado
Medical Instrumentation Interface
The PIC18F66J16T-I/PT powers medical device front-ends such as handheld monitors, diagnostic peripherals, and lab instrument control boards. Its 5V-tolerant digital inputs interface to legacy analog front-ends, the PMP drives alphanumeric or small graphic displays for patient readouts, and dual UART streams data to host PCs or wireless modules. The industrial -40 C to +85 C temperature range supports clinical environment operation, while the enhanced ICD with three hardware breakpoints simplifies IEC 62304 / FDA firmware validation cycles. Note that medical safety-critical functions require additional qualification and redundancy beyond any single MCU's specifications.
Recomendado
Educational / Development Platform
The PIC18F66J16T-I/PT is widely adopted in university curricula and hobbyist development boards thanks to MPLAB X IDE support, PICkit programmer compatibility, and a robust free XC8 compiler. 96 KB Flash gives students headroom for full projects, 51 I/O pins expose enough peripherals for robotics, instrumentation, and IoT labs, and nanoWatt modes introduce low-power design concepts. Its 64-pin TQFP package also lends itself to breadboard-friendly breakout boards.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC18F66J16T-I/PT — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC18F66J15T-I/PT | PIC18F66J15-I/PT | PIC18F66J11T-I/PT | PIC18F65J94-I/PT | PIC18F65J11-I/PT | PIC18F65K90T-I/MR |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (PT) 10x10 mm | TQFP-64 (PT) 10x10 mm - same | TQFP-64 (PT) 10x10 mm - same | TQFP-64 (PT) 10x10 mm - same | TQFP-64 (PT) 10x10 mm - same | TQFP-64 (PT) 10x10 mm - same | QFN-64 (MR) 10x10 mm - same footprint family |
| Core | PIC18 8-bit | PIC18 8-bit | PIC18 8-bit | PIC18 8-bit | PIC18 K-series 8-bit | ||
| Flash Memory | 96 KB | 48 KB (-50%) | 64 KB (-33%) | 32 KB (-67%) | 32 KB (-67%) | 32 KB (-67%) | |
| Max CPU Speed | 48 MHz / 10 MIPS | 48 MHz / 10 MIPS | 48 MHz / 10 MIPS | 64 MHz / 16 MIPS | |||
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 1.8 V to 5.5 V | |||
| 5V-Tolerant Digital Inputs | Yes (selected pins) | Yes (selected pins) | Yes (selected pins) | Yes (wider VDD tolerance) | |||
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | |||
| Lifecycle Status | Active | Active | Active | Active |
Diferenciadores clave
- Highest Flash density in the 64-pin PIC18F87J11 TQFP family at this exact die (frente a PIC18F66J15T-I/PT)
- Selected 5V-tolerant digital inputs simplify 3V-to-5V bridging without level shifters (frente a PIC18F65K90T-I/MR)
- Parallel master port (PMP) drives character or graphic LCDs directly (frente a PIC18F66J11T-I/PT)
Notas de diseño
Decoupling must include one 100 nF ceramic capacitor placed within 5 mm of every VDD/VSS pin pair, plus a bulk 4.7-10 uF tantalum or ceramic at the regulator output. Multiple VDD pins on the 64-pin TQFP (pin 11, 25, 58) each require their own high-frequency decoupling - sharing one cap across all VDD pins can introduce ground bounce and code-fetch glitches at 48 MHz. AVSS/AVDD (pins 42/43) need a separate 100 nF cap and a small ferrite bead if analog accuracy is required on PORTF inputs.
Route the 48 MHz crystal traces (OSC1/OSC2, pins 60/61) with short, symmetric lengths and guard them with a ground pour on both sides to minimize EMI coupling. The MCLR pin (pin 64) needs a 10 kohm pull-up to VDD plus a 100 nF cap to ground for noise immunity; do not leave MCLR floating. Place ICSP programming header pads (RB0/RB1/MCLR) on the board edge to allow field re-flashing via PICkit without disassembling the enclosure.
Do not exceed 3.6 V on any VDD pin - the PIC18F66J16 is a 3V-only part even though some inputs are 5V-tolerant. Confusing the J16 with the K90 (which spans 1.8-5.5 V) is a frequent PCB-rework cause. Also, leaving unused I/O pins floating can cause shoot-through current in nanoWatt sleep modes; configure all unused pins as outputs driving low (or inputs with internal pull-ups) before entering sleep. Finally, the 48 MHz Fosc requires the PLL configuration bits to be set correctly in CONFIG1L - omitting this leaves the core at the 8 MHz internal oscillator.
Información de cumplimiento
RoHS compliant per Microchip product page. Industrial temperature grade -40C to +85C, not AEC-Q100 qualified (no automotive grade listed). Lead-free and halogen-free packaging per Microchip green-product declarations.
