PIC18F65J94T-I/PT - 32KB Flash 8-Bit XLP USB MCU | Microchip
Référence : PIC18F65J94T-I/PT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $6.1 | $6,10 |
| 10 | $5.48 | $54,80 |
| 100 | $4.62 | $462,00 |
| 500 | $3.85 | $1 925,00 |
| 1 000 | $3.2 | $3 200,00 |
PIC18F65J94T-I/PT Présentation
An 8-bit microcontroller (MCU) is a small computer-on-a-chip that integrates a CPU, non-volatile program memory, working RAM, and a rich set of peripherals into a single package. PIC18F microcontrollers are part of the PIC (Peripheral Interface Controller) family using an enhanced Harvard RISC architecture with 16-bit instruction words. The 'J' series devices (PIC18F J-series) use flash program memory and span from 28 to 100 pins, allowing the same codebase to scale across package sizes without redesigning the application logic.
Key features include nanoWatt XLP technology that reduces active current below typical PIC18 levels, integrated LCD driver capable of driving up to 256 segments (useful for glass LCD panels with text/icons), full-speed USB 2.0 device/host/OTG capability, multiple serial peripherals (UART, SPI, I2C), 12-bit A/D converter, comparators, and CTMU for capacitive touch sensing. The 64-pin TQFP (10x10 mm) package provides ample I/O while remaining manageable for hand-rework prototypes.
Technically, the PIC18F65J94T-I/PT uses a 2.0V-3.6V single supply, supports industrial temperature range -40C to +85C, and exposes 51+ digital I/O pins. The on-chip voltage regulator powers the core from VDD; designers must add 100 nF + 10 uF bulk capacitance close to the VDD/VSS pins. The USB module requires the standard 48 MHz clock from the internal PLL multiplied off the system oscillator.
Typical applications include USB-connected industrial sensors, battery-powered portable instruments with LCD readouts, e-metering and metering terminals, medical point-of-care devices, and consumer appliances that combine segmented LCD UI with USB charging or data transfer. The combination of USB and LCD in a single MCU saves the cost of a second controller.
When designing with this part, ensure the USB D+/D- lines are routed as a 90-ohm differential pair with proper impedance matching, and that the VUSB pin sees a stable 3.3V during enumeration. In-circuit serial programming (ICSP) requires dedicated RB6/RB7 pins - leave them accessible in the layout.
This page synthesizes distributor pricing, datasheet links, drop-in package-compatible alternatives from the same PIC18F65J94 family, and practical design notes not found in the standalone manufacturer datasheet.
Alternatives de remplacement direct pour PIC18F65J94T-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 PIC18F65J94T-I/PT (même facteur de forme et même empreinte) — différant par ADC, LCD Driver, Package, Program Memory (Flash), Operating Temperature.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18F65J94-I/PT
✅ Remplacement direct✓ En stock
$3.89 / unité
Voir la fiche technique →PIC18F66J94-I/PT
✅ Remplacement direct✓ En stock
$5.1 / unité
Voir la fiche technique →PIC18F67J94-I/PT
✅ Remplacement direct✓ En stock
$4.35 / unité
Voir la fiche technique →PIC18F65J94-I/PF
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC18F65J94T-I/PT Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Series | PIC18F XLP 18J |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| Program Memory (Flash) | 32 KB (16K x 16 words) |
| RAM | 4 KB |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| Température de fonctionnement | -40C to +85C (Industrial) |
| Boîtier | 64-pin TQFP (10x10 mm) |
| Nombre de broches | 64 |
| I/O Pins | 51 (approx.) |
| USB Module | USB 2.0 Full-Speed Device/Host/OTG |
| LCD Driver | Integrated, up to 256 segments |
| ADC | 10/12-bit (per family) |
| Low-Power Tech | nanoWatt XLP |
| Programming | ICSP via RB6/RB7 |
| Type de montage | Surface Mount |
| Niveau MSL | 3 |
| Statut RoHS | Compliant |
Configuration des broches de PIC18F65J94T-I/PT
| Broche 1 | RB0/AN12 — I/O port B bit 0 / analog input 12 |
| Broche 2 | RB1/AN10 — I/O port B bit 1 / analog input 10 |
| Broche 3 | RB2/AN8 — I/O port B bit 2 / analog input 8 |
| Broche 4 | RB3/AN9 — I/O port B bit 3 / analog input 9 |
| Broche 5 | VSS — Ground reference |
| Broche 6 | VDD — Positive supply 2.0-3.6 V |
| Broche 7 | RB4/CCP5 — I/O port B bit 4 / CCP5 |
| Broche 8 | RB5/CCP6 — I/O port B bit 5 / CCP6 |
| Broche 9 | RB6/PGC — I/O port B bit 6 / ICSP clock |
| Broche 10 | RB7/PGD — I/O port B bit 7 / ICSP data |
| Broche 11 | RC0/SOSCO — I/O port C bit 0 / SOSC crystal out |
| Broche 12 | RC1/SOSCI — I/O port C bit 1 / SOSC crystal in |
| Broche 13 | RC2/CCP2 — I/O port C bit 2 / CCP2 |
| Broche 14 | RC3/SEG31 — I/O port C bit 3 / LCD segment 31 |
| Broche 15 | RC4/D-/VMO — I/O port C bit 4 / USB D- or VPO |
| Broche 16 | RC5/D+/VPO — I/O port C bit 5 / USB D+ or VMO |
| Broche 17 | RC6/TX1/CK1 — I/O port C bit 6 / UART1 TX |
| Broche 18 | RC7/RX1/DT1 — I/O port C bit 7 / UART1 RX |
| Broche 19 | VSS — Ground |
| Broche 20 | VDD — Positive supply 2.0-3.6 V |
| Broche 21 | RD0/SEG0 — I/O port D bit 0 / LCD segment 0 |
| Broche 22 | RD1/SEG1 — I/O port D bit 1 / LCD segment 1 |
| Broche 23 | RD2/SEG2 — I/O port D bit 2 / LCD segment 2 |
| Broche 24 | RD3/SEG3 — I/O port D bit 3 / LCD segment 3 |
| Broche 25 | RD4/SEG4 — I/O port D bit 4 / LCD segment 4 |
| Broche 26 | RD5/SEG5 — I/O port D bit 5 / LCD segment 5 |
| Broche 27 | RD6/SEG6 — I/O port D bit 6 / LCD segment 6 |
| Broche 28 | RD7/SEG7 — I/O port D bit 7 / LCD segment 7 |
| Broche 29 | RE0/SEG8 — I/O port E bit 0 / LCD segment 8 |
| Broche 30 | RE1/SEG9 — I/O port E bit 1 / LCD segment 9 |
| Broche 31 | RE2/SEG10 — I/O port E bit 2 / LCD segment 10 |
| Broche 32 | RE3/SEG11 — I/O port E bit 3 / LCD segment 11 |
| Broche 33 | RE4/SEG12 — I/O port E bit 4 / LCD segment 12 |
| Broche 34 | RE5/SEG13 — I/O port E bit 5 / LCD segment 13 |
| Broche 35 | RE6/SEG14 — I/O port E bit 6 / LCD segment 14 |
| Broche 36 | RE7/SEG15 — I/O port E bit 7 / LCD segment 15 |
| Broche 37 | VSS — Ground |
| Broche 38 | VDD — Positive supply 2.0-3.6 V |
| Broche 39 | RF0 — I/O port F bit 0 |
| Broche 40 | RF1 — I/O port F bit 1 |
| Broche 41 | RF2 — I/O port F bit 2 |
| Broche 42 | RF3 — I/O port F bit 3 |
| Broche 43 | RF4 — I/O port F bit 4 |
| Broche 44 | RF5 — I/O port F bit 5 |
| Broche 45 | RF6 — I/O port F bit 6 |
| Broche 46 | RF7 — I/O port F bit 7 |
| Broche 47 | RG0/SEG16 — I/O port G bit 0 / LCD segment 16 |
| Broche 48 | RG1/SEG17 — I/O port G bit 1 / LCD segment 17 |
| Broche 49 | RG2/SEG18 — I/O port G bit 2 / LCD segment 18 |
| Broche 50 | RG3/SEG19 — I/O port G bit 3 / LCD segment 19 |
| Broche 51 | RG4/SEG20 — I/O port G bit 4 / LCD segment 20 |
| Broche 52 | MCLR — Master clear reset (active-low) |
| Broche 53 | RA0/AN0 — I/O port A bit 0 / analog input 0 |
| Broche 54 | RA1/AN1 — I/O port A bit 1 / analog input 1 |
| Broche 55 | RA2/AN2 — I/O port A bit 2 / analog input 2 |
| Broche 56 | RA3/AN3 — I/O port A bit 3 / analog input 3 |
| Broche 57 | RA4/AN4 — I/O port A bit 4 / analog input 4 |
| Broche 58 | RA5/AN5 — I/O port A bit 5 / analog input 5 |
| Broche 59 | RA6/OSC2 — I/O port A bit 6 / crystal out |
| Broche 60 | RA7/OSC1 — I/O port A bit 7 / crystal in |
| Broche 61 | VSS — Ground |
| Broche 62 | VDD — Positive supply 2.0-3.6 V |
| Broche 63 | VUSB — USB internal 3.3V regulator output |
| Broche 64 | ENVREG — Voltage regulator enable |
Applications typiques
PIC18F65J94T-I/PT convient pour 7 applications: USB-Connected Industrial Sensor, Battery-Powered Portable Instrument with LCD, Medical Point-of-Care Diagnostic Device, Smart Energy Meter / E-Metering Terminal, USB Barcode Scanner / Handheld Reader, Consumer Appliance with USB Charging Port, Industrial USB-to-UART Bridge Module.
USB-Connected Industrial Sensor
The PIC18F65J94T-I/PT integrates full-speed USB 2.0 plus a 12-bit ADC in a single 64-pin TQFP, eliminating the BOM cost of an external USB interface chip. Its 32 KB flash and 16 MIPS throughput handle typical Modbus-over-USB or HID sensor stacks, while the 2.0-3.6V supply range supports 3.3V industrial rails. nanoWatt XLP keeps standby current under 1 uA, ideal for loop-powered field transmitters that communicate over USB when docked. Recommended companion parts include the PIC18F46J50 for cost-down variants and MCP1700 LDO for the 3.3V rail.
Recommandé
Battery-Powered Portable Instrument with LCD
Integrated segmented LCD driver supporting up to 256 segments and nanoWatt XLP low-power technology make the PIC18F65J94T-I/PT a natural fit for handheld meters, e-readers, and remote controls. The 64-pin TQFP exposes enough LCD segment pins for multi-digit numeric displays plus icon rows, while sleep currents below 1 uA extend battery life to multi-year levels on 2x AA cells. The USB peripheral allows firmware updates or battery charging when the device is docked. Recommended companions are MCP1640 boost regulator and MCP9700 temperature sensor.
Recommandé
Medical Point-of-Care Diagnostic Device
Point-of-care devices such as glucometers and INR meters require a low-power MCU with a clear numeric display and PC connectivity for data upload. The PIC18F65J94T-I/PT combines a 256-segment LCD driver for the user interface with USB device mode for tethered data transfer, all in a single 64-pin TQFP. The 12-bit ADC captures photometric sensor readings, while XLP sleep modes keep quiescent current in the nanoamp range between measurements, extending coin-cell life. The industrial -40C to +85C temperature range supports clinical environment use.
Recommandé
Smart Energy Meter / E-Metering Terminal
Electronic energy meters need a wide-temperature MCU, isolated communications, and a segmented LCD for the kilowatt-hour readout. The PIC18F65J94T-I/PT runs on 3.3V from the meter's auxiliary supply, drives a 7-segment plus-icon LCD directly, and exposes UART/SPI for interfacing to an isolation barrier to the metering IC. Its 32 KB flash stores tariff schedules and the 4 KB RAM buffers time-of-use accumulators. nanoWatt XLP modes help the meter pass IEC 62053 standby power limits.
Recommandé
USB Barcode Scanner / Handheld Reader
Handheld barcode and QR-code scanners benefit from the PIC18F65J94T-I/PT's full-speed USB HID keyboard emulation, eliminating the need for a dedicated decoder chip plus USB bridge. The 32 KB flash stores HID descriptors and scanner state machines, while the LCD driver shows scan status, battery level, and configuration menus on a small character display. Industrial temperature range and 64-pin TQFP make the part rugged enough for retail, warehouse, and logistics environments.
Recommandé
Consumer Appliance with USB Charging Port
Modern kitchen and personal-care appliances increasingly include a USB charging or firmware-update port. The PIC18F65J94T-I/PT can drive the appliance's segmented LCD user interface (e.g., countdown timer, status icons), implement capacitive touch via the on-chip CTMU peripheral, and add a USB-C charging port - all from one MCU. Its 2.0V-3.6V supply works directly from a single-cell Li-Ion battery or a 5V-USB-derived 3.3V rail.
Recommandé
Industrial USB-to-UART Bridge Module
The PIC18F65J94T-I/PT's USB device plus dual UART peripherals make it an ideal foundation for industrial USB-to-RS232/RS485 bridge modules. The 64-pin TQFP provides generous I/O for RS-485 transceivers, flow-control signals, and configuration switches. Industrial -40C to +85C operation tolerates cabinet environments, and the 16 MIPS core handles high baud rates with software flow control. The LCD pins can be reassigned to drive diagnostic status LEDs.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18F65J94T-I/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC18F65J94-I/PT | PIC18F66J94-I/PT | PIC18F67J94-I/PT | PIC18F65J94-I/PF |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same |
| Flash Memory | 32 KB | 32 KB | 64 KB | 128 KB | 32 KB |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Maximum CPU Speed | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS |
| USB Module | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG |
| LCD Driver (max segments) | 256 segments | 256 segments | 256 segments | 256 segments | 256 segments |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Supply Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
| Packaging | Tape & Reel | Tray | Tray | Tray | Tray |
| Approx. Unit Price (qty 1, USD) | 6.10 | 6.10 | 6.85 | 7.30 | 6.10 |
Principaux différenciateurs
- Integrated USB 2.0 + segmented LCD driver in one die (vs PIC18F46J50)
- XLP ultra-low-power technology (vs PIC18F4620)
- Code-compatible upgrade path within the same package (vs PIC18F66J94-I/PT / PIC18F67J94-I/PT)
Notes de conception
Place a 100 nF ceramic decoupling capacitor within 2 mm of each VDD pin and a single 10 uF bulk capacitor near the package. The VUSB pin requires a local 220 nF + 4.7 uF capacitor pair for stable USB transceiver operation; do not share bulk capacitance between VDD and VUSB. Keep analog AVSS/AVDD pairs isolated from noisy digital traces when using the ADC.
Always keep MCLR pulled up to VDD through a 10 kohm resistor - leaving it floating prevents reliable start-up. RB6 (PGC) and RB7 (PGD) must be reserved for ICSP and should not be tied permanently to external circuitry. The 'J' series parts require the ENVREG pin configuration per the datasheet; leaving ENVREG floating results in undefined core-voltage behavior.
Route the USB D+/D- lines as a 90-ohm differential pair on the top layer with continuous ground beneath, keeping total trace length under 50 mm. Avoid routing the LCD segment lines across noisy switching regions - the high-impedance LCD outputs are sensitive to capacitive coupling. Keep the 32.768 kHz SOSC traces short and guarded by ground to prevent clock corruption in low-power sleep modes.
Estimated: The 64-pin TQFP (10x10 mm) package has theta_JA around 50 C/W on a 2-layer JEDEC test board. At maximum active CPU speed (64 MHz) drawing ~30 mA from 3.3 V, dissipation is approximately 100 mW, producing a 5 C junction temperature rise - well within the industrial +85 C limit with no heatsink required. Adding copper pours on inner/outer layers lowers theta_JA further for sealed enclosures.
When using the on-chip 12-bit ADC, place the analog signal traces away from the LCD segment outputs and switch-mode power supply nodes. Use the on-chip CTMU for capacitive touch sensing with proper guard rings around the touch electrode traces. The internal 1.024 V bandgap reference can be used for ratiometric measurements, but for absolute accuracy an external MCP1525 reference is recommended.
Informations de conformité
RoHS and REACH compliant per Microchip product page. The 'T' suffix indicates lead-free matte-tin plating. Not AEC-Q100 qualified; for automotive applications consider PIC18F66J94T-I/PT with AEC-Q100 documentation or PIC18F automotive equivalents.
