PIC18F66J16T-I/PT - 8-bit 48MHz 96KB Flash MCU | Microchip
Référence : PIC18F66J16T-I/PT ✓ Actif| Qté | Prix unitaire | 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 Présentation
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.
Alternatives de remplacement direct pour PIC18F66J16T-I/PT — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC18F66J16T-I/PT (même facteur de forme et même empreinte) — différant par Package, I/O Pins, Operating Temperature, Program Memory (Flash), ADC.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18F66J15T-I/PT
✅ Remplacement direct✓ En stock
$6.72 / unité
Voir la fiche technique →PIC18F66J15-I/PT
✅ Remplacement direct✓ En stock
$4.2 / unité
Voir la fiche technique →PIC18F66J11T-I/PT
✅ Remplacement direct✓ En stock
$4.61 / unité
Voir la fiche technique →PIC18F65J94-I/PT
✅ Remplacement direct✓ En stock
$3.89 / unité
Voir la fiche technique →PIC18F65J11-I/PT
✅ Remplacement direct✓ En stock
$4.35 / unité
Voir la fiche technique →PIC18F65K90T-I/MR
✅ Remplacement direct✓ En stock
$1.95 / unité
Voir la fiche technique →PIC18F66J16T-I/PT Valeurs maximales et caractéristiques électriques
| 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) |
| Boîtier | 64-pin TQFP (PT) 10x10 mm |
| Type de montage | Surface Mount |
| Température de fonctionnement | -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 |
| Statut RoHS | Compliant |
Configuration des broches de PIC18F66J16T-I/PT
| Broche 1 | RP2/RG2 — Remappable peripheral / PORTG I/O |
| Broche 2 | RP3/RG3 — Remappable peripheral / PORTG I/O |
| Broche 3 | RP4/RG4 — Remappable peripheral / PORTG I/O |
| Broche 4 | RP5/RG5 — Remappable peripheral / PORTG I/O |
| Broche 5 | RP6/RG6 — Remappable peripheral / PORTG I/O |
| Broche 6 | RP7/RG7 — Remappable peripheral / PORTG I/O |
| Broche 7 | RC1 — PORTC I/O |
| Broche 8 | RC2 — PORTC I/O |
| Broche 9 | RC3 — PORTC I/O |
| Broche 10 | RC4 — PORTC I/O |
| Broche 11 | VDD — Positive supply (2.0-3.6 V) |
| Broche 12 | VSS — Ground reference |
| Broche 13 | RC5 — PORTC I/O |
| Broche 14 | RC6 — PORTC I/O / TX1 |
| Broche 15 | RC7 — PORTC I/O / RX1 |
| Broche 16 | RD0 — PORTD I/O / PMP |
| Broche 17 | RD1 — PORTD I/O / PMP |
| Broche 18 | RD2 — PORTD I/O / PMP |
| Broche 19 | RD3 — PORTD I/O / PMP |
| Broche 20 | RD4 — PORTD I/O / PMP |
| Broche 21 | RD5 — PORTD I/O / PMP |
| Broche 22 | RD6 — PORTD I/O / PMP |
| Broche 23 | RD7 — PORTD I/O / PMP |
| Broche 24 | VSS — Ground reference |
| Broche 25 | VDD — Positive supply (2.0-3.6 V) |
| Broche 26 | RE0 — PORTE I/O / PMP |
| Broche 27 | RE1 — PORTE I/O / PMP |
| Broche 28 | RE2 — PORTE I/O / PMP |
| Broche 29 | RE3 — PORTE I/O / PMP |
| Broche 30 | RE4 — PORTE I/O / PMP |
| Broche 31 | RE5 — PORTE I/O / PMP |
| Broche 32 | RE6 — PORTE I/O / PMP |
| Broche 33 | RE7 — PORTE I/O / PMP |
| Broche 34 | RF0 — PORTF I/O / analog input |
| Broche 35 | RF1 — PORTF I/O / analog input |
| Broche 36 | RF2 — PORTF I/O / analog input |
| Broche 37 | RF3 — PORTF I/O / analog input |
| Broche 38 | RF4 — PORTF I/O / analog input |
| Broche 39 | RF5 — PORTF I/O / analog input |
| Broche 40 | RF6 — PORTF I/O / analog input |
| Broche 41 | RF7 — PORTF I/O / analog input |
| Broche 42 | AVDD — Analog positive supply |
| Broche 43 | AVSS — Analog ground |
| Broche 44 | RH0 — PORTH I/O |
| Broche 45 | RH1 — PORTH I/O |
| Broche 46 | RH2 — PORTH I/O |
| Broche 47 | RH3 — PORTH I/O |
| Broche 48 | RH4 — PORTH I/O |
| Broche 49 | RH5 — PORTH I/O |
| Broche 50 | RH6 — PORTH I/O |
| Broche 51 | RH7 — PORTH I/O |
| Broche 52 | RA0 — PORTA I/O / analog input |
| Broche 53 | RA1 — PORTA I/O / analog input |
| Broche 54 | RA2 — PORTA I/O / analog input |
| Broche 55 | RA3 — PORTA I/O / analog input |
| Broche 56 | RA4 — PORTA I/O |
| Broche 57 | RA5 — PORTA I/O |
| Broche 58 | VDD — Positive supply (2.0-3.6 V) |
| Broche 59 | VSS — Ground reference |
| Broche 60 | OSC1 — Crystal/oscillator input |
| Broche 61 | OSC2 — Crystal/oscillator output |
| Broche 62 | RB0 — PORTB I/O / programming |
| Broche 63 | RB1 — PORTB I/O / programming |
| Broche 64 | MCLR — Master clear reset (active low) |
Applications typiques
PIC18F66J16T-I/PT convient pour 7 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18F66J16T-I/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Highest Flash density in the 64-pin PIC18F87J11 TQFP family at this exact die (vs PIC18F66J15T-I/PT)
- Selected 5V-tolerant digital inputs simplify 3V-to-5V bridging without level shifters (vs PIC18F65K90T-I/MR)
- Parallel master port (PMP) drives character or graphic LCDs directly (vs PIC18F66J11T-I/PT)
Notes de conception
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.
Informations de conformité
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.
