PIC18F67J94-I/PT - 8-Bit 64MHz 128KB Flash USB XLP MCU | Microchip
MPN: PIC18F67J94-I/PT ✓ فعالPIC18F67J94-I/PT نمای کلی
An 8-bit microcontroller (MCU) is a programmable computing IC that integrates a CPU, non-volatile program memory, working RAM, and peripherals on a single die. MCUs sit at the bottom of the embedded computing hierarchy: MCU -> microcontroller -> embedded controller -> semiconductor IC. Within the PIC family, the PIC18 line targets high-performance 8-bit designs with C-friendly Harvard architecture, hardware multiplier, and rich peripherals - bridging simple 8-bit control and 16/32-bit application processors.
Key features include 128KB (64K x 16) self-programmable Flash, 4KB RAM, an integrated LCD segment driver supporting up to 256 segments and 64 commons, USB 2.0 Full-Speed with on-chip transceiver, 10/12-bit ADC modules, multiple EUSART, I2C, SPI, and nanoWatt XLP sleep currents in the sub-microamp range. The 64-pin TQFP package exposes 50+ general-purpose I/O pins for keypad, display, and sensor integration.
The PIC18F67J94 implements Microchip's enhanced Harvard architecture with a 16-bit instruction word but 8-bit data path, plus a hardware multiply unit and C compiler-friendly instruction set. Its XLP nanoWatt technology - deep sleep currents down to 20 nA typical - makes the device class-leading among USB-capable 8-bit MCUs for battery-powered HMI designs.
Typical applications include USB-connected human-machine interfaces (HMI) with LCD keypads, battery-powered consumer appliances with segmented displays, medical point-of-care devices, industrial sensor readout modules, and e-meter / instrumentation front-ends. The on-chip USB and LCD driver reduce BOM cost vs. two-chip implementations.
When designing with this device, ensure the internal 3.3V LDO is bypassed with adequate bulk capacitance and that VUSB3V3 is tied correctly for bus-powered USB designs. Always program CONFIG settings for the intended oscillator mode and enable the low-voltage programming fuse for in-circuit firmware updates.
This page synthesizes distributor pricing, drop-in same-package alternatives from the PIC18J family, and practical design notes not found in the manufacturer datasheet, giving engineers a one-stop reference for selecting this MCU.
جایگزین‌های drop-in برای PIC18F67J94-I/PT — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای PIC18F67J94-I/PT (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, ADC, Core Architecture, LCD Driver, I/O Pins.
PIC18F67J93-I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F65J94-I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F67J90-I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F66J94-I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F6720-I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F67J94-I/PT حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Architecture | PIC18 (8-bit Harvard, 16-bit instruction) |
| Program Memory (Flash) | 128 KB (64K x 16) |
| RAM | 4 KB |
| Maximum CPU Frequency | 64 MHz (16 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| I/O Pins | 50+ (varies by package; 64-pin TQFP) |
| USB | USB 2.0 Full-Speed, on-chip transceiver |
| LCD Driver | Up to 256 segments, 64 commons |
| ADC | 10-bit and 12-bit modules (multiple) |
| Communication | EUSART, I2C, SPI |
| بسته‌بندی | 64-pin TQFP (10x10 mm) - PT |
| نوع نصب | Surface Mount (Tape & Reel / Tray) |
| دمای کاری | -40 C to +85 C (Industrial) |
| XLP nanoWatt Sleep Current | Sub-microamp (typical 20 nA) |
| وضعیت RoHS | Compliant |
| سطح MSL | 3 (168 hours) |
پیکربندی پین PIC18F67J94-I/PT
| پین 1 | RC1/T1OSI/CCP2 — I/O port C, Timer1 osc input, or CCP2 |
| پین 2 | RC2/CCP1 — I/O port C / CCP1 PWM output |
| پین 3 | RC3/SCL — I/O port C / I2C clock |
| پین 4 | RC4/SDA — I/O port C / I2C data |
| پین 5 | RC5 — I/O port C |
| پین 6 | RC6/TX1/CK1 — I/O port C / EUSART1 TX |
| پین 7 | RC7/RX1/DT1 — I/O port C / EUSART1 RX |
| پین 8 | RE0/RD — I/O port E / parallel read |
| پین 9 | RE1/WR — I/O port E / parallel write |
| پین 10 | RE2/CS — I/O port E / parallel chip select |
| پین 11 | VDD — Digital supply (2.0V-3.6V) |
| پین 12 | VSS — Digital ground |
| پین 13 | OSC1/CLKI — Crystal oscillator input / external clock |
| پین 14 | OSC2/CLKO — Crystal oscillator output |
| پین 15 | RA0/AN0 — I/O port A / analog input 0 |
| پین 16 | RA1/AN1 — I/O port A / analog input 1 |
| پین 17 | RA2/AN2/VREF- — I/O port A / analog input 2 / VREF- |
| پین 18 | RA3/AN3/VREF+ — I/O port A / analog input 3 / VREF+ |
| پین 19 | RA4/T0CKI — I/O port A / Timer0 clock input |
| پین 20 | RA5/AN4 — I/O port A / analog input 4 |
| پین 21 | RB0/INT0 — I/O port B / external interrupt 0 |
| پین 22 | RB1/INT1 — I/O port B / external interrupt 1 |
| پین 23 | RB2/INT2 — I/O port B / external interrupt 2 |
| پین 24 | RB3/INT3 — I/O port B / external interrupt 3 |
| پین 25 | RB4 — I/O port B |
| پین 26 | RB5 — I/O port B |
| پین 27 | RB6/PGC — I/O port B / ICSP clock |
| پین 28 | RB7/PGD — I/O port B / ICSP data |
| پین 29 | VUSB3V3 — USB 3.3V regulator output (bypass with 220 nF) |
| پین 30 | D- — USB D- data line |
| پین 31 | D+ — USB D+ data line |
| پین 32 | VDD — Digital supply |
| پین 33 | VSS — Digital ground |
| پین 34 | RD0 — I/O port D |
| پین 35 | RD1 — I/O port D |
| پین 36 | RD2 — I/O port D |
| پین 37 | RD3 — I/O port D |
| پین 38 | RD4 — I/O port D |
| پین 39 | RD5 — I/O port D |
| پین 40 | RD6 — I/O port D |
| پین 41 | RD7 — I/O port D |
| پین 42 | RF0 — I/O port F |
| پین 43 | RF1 — I/O port F |
| پین 44 | RF2 — I/O port F |
| پین 45 | RF3 — I/O port F |
| پین 46 | RF4 — I/O port F |
| پین 47 | RF5 — I/O port F |
| پین 48 | RF6 — I/O port F |
| پین 49 | RF7 — I/O port F |
| پین 50 | RG0 — I/O port G |
| پین 51 | RG1 — I/O port G |
| پین 52 | RG2 — I/O port G |
| پین 53 | RG3 — I/O port G |
| پین 54 | RG4 — I/O port G |
| پین 55 | MCLR — Master clear / reset (active-low) |
| پین 56 | SEG0 — LCD segment 0 |
| پین 57 | SEG1 — LCD segment 1 |
| پین 58 | SEG2 — LCD segment 2 |
| پین 59 | SEG3 — LCD segment 3 |
| پین 60 | SEG4 — LCD segment 4 |
| پین 61 | SEG5 — LCD segment 5 |
| پین 62 | COM0 — LCD common 0 |
| پین 63 | COM1 — LCD common 1 |
| پین 64 | AVDD/AVSS — Analog supply / ground (paired) |
کاربردهای معمول
PIC18F67J94-I/PT مناسب است برای 6 کاربردs: USB HMI with Segmented LCD, Battery-Powered Sensor Modules, Industrial Front-Panel Controllers, Medical Point-of-Care Devices, Smart Energy / E-Meter Front-Ends, Consumer Appliance Control Boards.
USB HMI with Segmented LCD
The PIC18F67J94-I/PT is purpose-built for USB-connected human-machine interfaces that also drive segmented LCD glass. Its integrated USB 2.0 Full-Speed transceiver eliminates an external bridge IC, while the on-chip LCD driver handles up to 256 segments and 64 commons directly - covering typical 8-character alphanumeric plus icon displays. With 128KB Flash and 4KB RAM, the device fits USB HID/CDC stacks plus application state machines. Operating from 2.0-3.6V, it suits bus-powered designs drawing from the USB 5V via an LDO.
پیشنهادی
Battery-Powered Sensor Modules
The PIC18F67J94-I/PT is well-suited for battery-powered sensor readout modules thanks to its nanoWatt XLP technology, with deep-sleep currents down to 20 nA typical per the Microchip datasheet. Designers can duty-cycle the ADC, USB attach, and LCD to extend coin-cell or Li-Po life to multi-year spans. The 12-bit ADC complements the 10-bit module for high-precision transducer measurement, while the segmented LCD provides direct on-board readout without external driver cost.
پیشنهادی
Industrial Front-Panel Controllers
The PIC18F67J94-I/PT fits industrial front-panel controllers that combine keypad, multi-digit LCD, and a service-USB port for firmware updates. Its 50+ GPIO pins handle matrix keypads and discrete LEDs alongside LCD, while the USB peripheral enables in-field programming without a separate bootloader IC. The industrial -40C to +85C temperature grade ensures operation in factory environments, and 128KB Flash accommodates robust IEC-61131-style logic plus diagnostics.
پیشنهادی
Medical Point-of-Care Devices
The PIC18F67J94-I/PT supports medical point-of-care devices that combine a USB data port, segmented LCD readout, and a low-noise 12-bit ADC for biosensor measurement. Its XLP sleep modes keep standby current well below IEC 60601 patient-current budgets, while the integrated USB supports easy EMR/HIS connection. The 16 MIPS core runs lightweight filtering algorithms; deterministic interrupt latency on the PIC18 architecture is a benefit for safety-critical signal paths.
پیشنهادی
Smart Energy / E-Meter Front-Ends
The PIC18F67J94-I/PT is appropriate for single-phase e-meter front-ends that need a segmented LCD for kWh display plus USB for utility-side readout during service. Its 12-bit ADC handles CT/PT-derived analog inputs with sufficient resolution for class-1 metering, while the LCD driver presents tariff and totalized consumption without external glass drivers. XLP sleep mode keeps vampire draw below regulatory limits when the meter is in standby.
پیشنهادی
Consumer Appliance Control Boards
The PIC18F67J94-I/PT fits mid-range consumer appliances such as smart ovens, washing machines, and induction cooktops that need a multi-digit LCD plus USB service port. Its 128KB Flash stores lookup tables and feature-rich UI logic, while the segmented LCD reduces BOM cost vs. TFT solutions. The XLP low-power modes support standby power compliance (e.g. <0.5W) without compromising wake responsiveness for user inputs.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC18F67J94-I/PT — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC18F67J93-I/PT | PIC18F65J94-I/PT | PIC18F67J90-I/PT | PIC18F66J94-I/PT | PIC18F6720-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (10x10) | 64-pin TQFP (10x10) - same | 64-pin TQFP (10x10) - same | 64-pin TQFP (10x10) - same | 64-pin TQFP (10x10) - same | 64-pin TQFP (10x10) - same |
| USB | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed integrated | No USB |
| LCD Driver | Up to 256 segments, 64 commons | Up to 256 segments, 64 commons | Up to 256 segments, 64 commons | Up to 256 segments | Up to 256 segments | No LCD driver |
| ADC | 10-bit + 12-bit modules | 10-bit only | 10-bit + 12-bit | 10-bit | 10-bit + 12-bit | 10-bit |
| Max CPU Frequency | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 40 MHz (10 MIPS) |
| Operating 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 | 4.2 V to 5.5 V |
تفاوت‌های کلیدی
- 12-bit ADC plus 10-bit ADC on a single 8-bit die (در مقابلPIC18F67J93-I/PT)
- Combined USB 2.0 + LCD driver + nanoWatt XLP on a single die (در مقابلPIC18F6720-I/PT)
- Highest pin-count option in PIC18F67J9x family (در مقابلPIC18F65J94-I/PT)
یادداشت‌های طراحی
The PIC18F67J94-I/PT integrates a USB 3.3V regulator on the VUSB3V3 pin. According to the Microchip datasheet, this pin must be bypassed with 220 nF plus a bulk 4.7 uF to suppress switching noise from the regulator; failure to bypass may cause USB enumeration failures. For self-powered designs, the regulator can be disabled by tying VUSB3V3 to external 3.3V. Add a bulk 10 uF near the VDD pins to support peak USB transmit currents (up to 50 mA pulled from VBUS during enumeration).
Place the 220 nF VUSB3V3 capacitor directly under the chip's exposed pad or as close to pin 29 as the layout allows. Series resistors on D+/D- should be 27 ohm +/-1% with impedance-controlled routing (90 ohm differential). Maintain a continuous ground pour beneath the TQFP for thermal dissipation - the 64-pin TQFP (10x10) has reasonable thermal performance but benefits from copper pours on top and bottom layers tied with multiple vias.
Estimated: At 64 MHz with all peripherals active, core current consumption is approximately 15-18 mA - leave 25% margin when sizing the supply LDO. A common mistake is enabling the LCD charge pump at low VDD without verifying the bias level - per the Microchip datasheet, charge-pump mode requires VDD > 3.0V for full bias. Also, MCLR must be tied to VDD through a 10 kohm resistor for normal operation; leaving it floating causes unpredictable reset behavior.
Keep the 32.768 kHz secondary oscillator traces short and guarded by ground to prevent coupling noise into Timer1 RTC. According to Microchip application notes, ADC accuracy on the 12-bit module is best preserved by isolating analog pins (AN0-AN7) from digital switching signals with a ground trace; route analog VDD/VSS as a star from the supply LDO. Use the Microchip ADC design checklist (TB3114) to validate SNR performance for precision measurements.
اطلاعات انطباق
RoHS compliant per Microchip product page. Lead-free TQFP terminations with matte-tin plating. Industrial -40C to +85C temperature grade. Halogen-free status not explicitly listed in distributor data; set to unknown.
