PIC18F67J94-I/PT - 8-Bit 64MHz 128KB Flash USB XLP MCU | Microchip
MPN: PIC18F67J94-I/PT ✓ Hoạt độngPIC18F67J94-I/PT Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC18F67J94-I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18F67J94-I/PT (cùng hình factor và footprint) — khác nhau ở Package, ADC, Core Architecture, LCD Driver, I/O Pins.
PIC18F67J93-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F65J94-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F67J90-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F66J94-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F6720-I/PT
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Xem tài liệu →PIC18F67J94-I/PT Tỷ lệ tối đa & tính chất điện
| 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 |
| Hộp | 64-pin TQFP (10x10 mm) - PT |
| Kiểu lắp đặt | Surface Mount (Tape & Reel / Tray) |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| XLP nanoWatt Sleep Current | Sub-microamp (typical 20 nA) |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 3 (168 hours) |
Cấu hình chân PIC18F67J94-I/PT
| Chân 1 | RC1/T1OSI/CCP2 — I/O port C, Timer1 osc input, or CCP2 |
| Chân 2 | RC2/CCP1 — I/O port C / CCP1 PWM output |
| Chân 3 | RC3/SCL — I/O port C / I2C clock |
| Chân 4 | RC4/SDA — I/O port C / I2C data |
| Chân 5 | RC5 — I/O port C |
| Chân 6 | RC6/TX1/CK1 — I/O port C / EUSART1 TX |
| Chân 7 | RC7/RX1/DT1 — I/O port C / EUSART1 RX |
| Chân 8 | RE0/RD — I/O port E / parallel read |
| Chân 9 | RE1/WR — I/O port E / parallel write |
| Chân 10 | RE2/CS — I/O port E / parallel chip select |
| Chân 11 | VDD — Digital supply (2.0V-3.6V) |
| Chân 12 | VSS — Digital ground |
| Chân 13 | OSC1/CLKI — Crystal oscillator input / external clock |
| Chân 14 | OSC2/CLKO — Crystal oscillator output |
| Chân 15 | RA0/AN0 — I/O port A / analog input 0 |
| Chân 16 | RA1/AN1 — I/O port A / analog input 1 |
| Chân 17 | RA2/AN2/VREF- — I/O port A / analog input 2 / VREF- |
| Chân 18 | RA3/AN3/VREF+ — I/O port A / analog input 3 / VREF+ |
| Chân 19 | RA4/T0CKI — I/O port A / Timer0 clock input |
| Chân 20 | RA5/AN4 — I/O port A / analog input 4 |
| Chân 21 | RB0/INT0 — I/O port B / external interrupt 0 |
| Chân 22 | RB1/INT1 — I/O port B / external interrupt 1 |
| Chân 23 | RB2/INT2 — I/O port B / external interrupt 2 |
| Chân 24 | RB3/INT3 — I/O port B / external interrupt 3 |
| Chân 25 | RB4 — I/O port B |
| Chân 26 | RB5 — I/O port B |
| Chân 27 | RB6/PGC — I/O port B / ICSP clock |
| Chân 28 | RB7/PGD — I/O port B / ICSP data |
| Chân 29 | VUSB3V3 — USB 3.3V regulator output (bypass with 220 nF) |
| Chân 30 | D- — USB D- data line |
| Chân 31 | D+ — USB D+ data line |
| Chân 32 | VDD — Digital supply |
| Chân 33 | VSS — Digital ground |
| Chân 34 | RD0 — I/O port D |
| Chân 35 | RD1 — I/O port D |
| Chân 36 | RD2 — I/O port D |
| Chân 37 | RD3 — I/O port D |
| Chân 38 | RD4 — I/O port D |
| Chân 39 | RD5 — I/O port D |
| Chân 40 | RD6 — I/O port D |
| Chân 41 | RD7 — I/O port D |
| Chân 42 | RF0 — I/O port F |
| Chân 43 | RF1 — I/O port F |
| Chân 44 | RF2 — I/O port F |
| Chân 45 | RF3 — I/O port F |
| Chân 46 | RF4 — I/O port F |
| Chân 47 | RF5 — I/O port F |
| Chân 48 | RF6 — I/O port F |
| Chân 49 | RF7 — I/O port F |
| Chân 50 | RG0 — I/O port G |
| Chân 51 | RG1 — I/O port G |
| Chân 52 | RG2 — I/O port G |
| Chân 53 | RG3 — I/O port G |
| Chân 54 | RG4 — I/O port G |
| Chân 55 | MCLR — Master clear / reset (active-low) |
| Chân 56 | SEG0 — LCD segment 0 |
| Chân 57 | SEG1 — LCD segment 1 |
| Chân 58 | SEG2 — LCD segment 2 |
| Chân 59 | SEG3 — LCD segment 3 |
| Chân 60 | SEG4 — LCD segment 4 |
| Chân 61 | SEG5 — LCD segment 5 |
| Chân 62 | COM0 — LCD common 0 |
| Chân 63 | COM1 — LCD common 1 |
| Chân 64 | AVDD/AVSS — Analog supply / ground (paired) |
Ứng dụng tiêu biểu
PIC18F67J94-I/PT phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F67J94-I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- 12-bit ADC plus 10-bit ADC on a single 8-bit die (vsPIC18F67J93-I/PT)
- Combined USB 2.0 + LCD driver + nanoWatt XLP on a single die (vsPIC18F6720-I/PT)
- Highest pin-count option in PIC18F67J9x family (vsPIC18F65J94-I/PT)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
