PIC18F65J94-I/MR - 64-Pin 8-bit MCU with USB/LCD | Microchip
부품 번호: PIC18F65J94-I/MR ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $5.32 | $5.32 |
| 10 | $4.79 | $47.90 |
| 100 | $4.25 | $425.00 |
| 500 | $3.82 | $1,910.00 |
| 1,000 | $3.4 | $3,400.00 |
PIC18F65J94-I/MR 개요
A microcontroller (MCU) is a single-chip computer that contains a processor core, non-volatile program memory (typically Flash), volatile data memory (RAM), and a rich set of peripherals. The PIC18 family is a Harvard-architecture 8-bit RISC microcontroller family by Microchip widely used in consumer, industrial, and automotive subsystems because of its deterministic instruction timing, mature toolchain, and broad peripheral integration. PIC18F65J94 belongs to the PIC18J sub-family, which adds features such as enhanced peripherals, segmented LCD drivers, and on-chip USB to the base PIC18 architecture.
Key features of this part include nanoWatt XLP sleep currents that extend battery life in Vbat-backed designs, a Charge Time Measurement Unit (CTMU) for capacitive touch and time-of-flight measurements, and a hardware Real-Time Clock/Calendar (RTCC) with its own oscillator. The integrated segmented LCD controller can directly drive up to 256 LCD segments, eliminating the need for an external LCD driver. The 64-pin QFN form factor provides a low-profile footprint suitable for space-constrained modules while exposing a large number of I/O and peripheral pins.
Typical applications include battery-backed metering devices (water, gas, electricity), USB-connected human-interface devices, industrial control panels with on-board LCDs, and portable medical instrumentation. The combination of USB, LCD, and CTMU enables single-chip designs that previously required multiple ICs, reducing both BOM cost and PCB area. The wide operating voltage range supported by the J-series (typically 2.0 V to 3.6 V) further simplifies battery-powered designs.
When designing with this MCU, designers should review the errata sheet, ensure the 3.3 V core voltage is supplied correctly on the J-series (the J devices operate from a single 2.0 V to 3.6 V supply without a built-in LDO regulator), and properly configure the LCD bias network. A unique feature on this page is a consolidated alternatives cross-reference plus practical design notes that go beyond the manufacturer datasheet.
드롭인 대체품: PIC18F65J94-I/MR — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: PIC18F65J94-I/MR (동일 폼 팩터 및 풋프린트) — 차이점: Package, Operating Temperature, ADC, Core Architecture, Family.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
PIC18F65J94T-I/MR
✅ 드롭인✓ 재고 있음
$4.78 / 개
데이터시트 보기 →PIC18F65J94-I/PT
✅ 드롭인✓ 재고 있음
$3.89 / 개
데이터시트 보기 →PIC18F65J94-I/PF
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC18F66J94-I/MR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC18F67J94-I/MR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC18F65J90-I/PT
✅ 드롭인✓ 재고 있음
$4.72 / 개
데이터시트 보기 →PIC18F65J94-I/MR 최대 정격 & 전기적 특성
| Family | PIC18J |
| Core Architecture | 8-bit RISC (PIC18) |
| Program Memory (Flash) | 32 KB (16K x 16) |
| RAM | 4 KB |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| 핀 수 | 64 |
| 패키지 | QFN-64 (9x9 mm) |
| 동작 온도 | -40 °C to +85 °C (Industrial) |
| USB | USB 2.0 Full-Speed (Device/Host/OTG) |
| LCD | Segmented LCD driver, up to 256 segments |
| Low-Power Feature | nanoWatt XLP technology |
| CTMU | Yes (Charge Time Measurement Unit) |
| RTCC | Yes (hardware Real-Time Clock/Calendar) |
| Vbat Backup | Yes (battery backup domain) |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant (per Abacus EU RoHS) |
PIC18F65J94-I/MR 핀 구성
| 핀 1 | RF0/PMP0 — Digital I/O / Parallel Master Port bit 0 |
| 핀 2 | RF1/PMP1 — Digital I/O / Parallel Master Port bit 1 |
| 핀 3 | RF2/PMP2 — Digital I/O / Parallel Master Port bit 2 |
| 핀 4 | RF3/PMP3 — Digital I/O / Parallel Master Port bit 3 |
| 핀 5 | RF4/PMP4 — Digital I/O / Parallel Master Port bit 4 |
| 핀 6 | RF5/PMP5 — Digital I/O / Parallel Master Port bit 5 |
| 핀 7 | RF6/PMP6 — Digital I/O / Parallel Master Port bit 6 |
| 핀 8 | RF7/PMP7 — Digital I/O / Parallel Master Port bit 7 |
| 핀 9 | GND — Ground reference |
| 핀 10 | VDD — Positive supply (2.0 V - 3.6 V for J-series) |
| 핀 11 | RA0/AN0 — PORTA bit 0 / ADC channel 0 |
| 핀 12 | RA1/AN1 — PORTA bit 1 / ADC channel 1 |
| 핀 13 | RA2/AN2 — PORTA bit 2 / ADC channel 2 |
| 핀 14 | RA3/AN3 — PORTA bit 3 / ADC channel 3 |
| 핀 15 | RA4 — PORTA bit 4 |
| 핀 16 | RA5 — PORTA bit 5 |
| 핀 17 | RA6 — PORTA bit 6 |
| 핀 18 | RA7 — PORTA bit 7 |
| 핀 19 | GND — Ground reference |
| 핀 20 | VDD — Positive supply |
| 핀 21 | RB0 — PORTB bit 0 (interrupt-on-change capable) |
| 핀 22 | RB1 — PORTB bit 1 |
| 핀 23 | RB2 — PORTB bit 2 |
| 핀 24 | RB3 — PORTB bit 3 |
| 핀 25 | RB4 — PORTB bit 4 |
| 핀 26 | RB5 — PORTB bit 5 |
| 핀 27 | RB6 — PORTB bit 6 (ICSP clock) |
| 핀 28 | RB7 — PORTB bit 7 (ICSP data) |
| 핀 29 | RC0 — PORTC bit 0 |
| 핀 30 | RC1 — PORTC bit 1 |
| 핀 31 | RC2 — PORTC bit 2 |
| 핀 32 | RC3 — PORTC bit 3 |
| 핀 33 | RC4 — PORTC bit 4 |
| 핀 34 | RC5 — PORTC bit 5 |
| 핀 35 | RC6 — PORTC bit 6 |
| 핀 36 | RC7 — PORTC bit 7 |
| 핀 37 | RD0 — PORTD bit 0 |
| 핀 38 | RD1 — PORTD bit 1 |
| 핀 39 | RD2 — PORTD bit 2 |
| 핀 40 | RD3 — PORTD bit 3 |
| 핀 41 | RD4 — PORTD bit 4 |
| 핀 42 | RD5 — PORTD bit 5 |
| 핀 43 | RD6 — PORTD bit 6 |
| 핀 44 | RD7 — PORTD bit 7 |
| 핀 45 | RE0 — PORTE bit 0 |
| 핀 46 | RE1 — PORTE bit 1 |
| 핀 47 | RE2 — PORTE bit 2 |
| 핀 48 | RE3 — PORTE bit 3 |
| 핀 49 | RE4 — PORTE bit 4 |
| 핀 50 | RE5 — PORTE bit 5 |
| 핀 51 | RE6 — PORTE bit 6 |
| 핀 52 | RE7 — PORTE bit 7 |
| 핀 53 | Vbat — Battery backup supply for RTCC |
| 핀 54 | VDD — Positive supply |
| 핀 55 | GND — Ground reference |
| 핀 56 | VBUS — USB VBUS sense |
| 핀 57 | VDDUSB — USB transceiver supply (3.3 V) |
| 핀 58 | D+ — USB D+ data line |
| 핀 59 | D- — USB D- data line |
| 핀 60 | SOSCO/RTCC — Secondary oscillator output / RTCC |
| 핀 61 | SOSCI — Secondary oscillator input |
| 핀 62 | OSC1/CLKI — Primary oscillator input / external clock |
| 핀 63 | OSC2/CLKO — Primary oscillator output / clock out |
| 핀 64 | MCLR/RESET — Master Clear / Reset (active-low) |
일반적인 애플리케이션
PIC18F65J94-I/MR 적합 용도: 7 애플리케이션s: Battery-Backed Utility Metering, USB Human-Interface Devices, Industrial Control Panels with LCD, Portable Medical Instrumentation, Capacitive Touch User Interfaces, Automotive Aftermarket Accessories, Data-Acquisition Modules.
Battery-Backed Utility Metering
The PIC18F65J94-I/MR is purpose-built for battery-backed metering thanks to nanoWatt XLP deep-sleep currents, the integrated Vbat backup domain, and a hardware RTCC that keeps time and tamper registers alive on a coin cell for years. Its on-chip segmented LCD driver supports up to 256 segments, enough to display multi-tariff readings, units, status icons, and bar graphs without an external LCD driver. The 12-bit ADC reads sensor outputs such as current shunts or pulse counters with adequate resolution for residential and light-commercial metering. Use this part when a single-chip BOM matters more than raw throughput.
추천
USB Human-Interface Devices
With on-chip full-speed USB 2.0 (device/host/OTG), the PIC18F65J94-I/MR eliminates an external USB controller in custom HID, CDC, and proprietary USB products. The 64-pin QFN-64 form factor leaves plenty of I/O for buttons, encoders, LEDs, and indicator LCD panels, while the 16 MIPS throughput is sufficient for HID report rates up to 1000 Hz and CDC throughput for diagnostics. Engineers often pair it with a USB-C connector and a single 3.3 V LDO to build evaluation, training, and reference designs without needing a separate microcontroller plus USB bridge chip.
추천
Industrial Control Panels with LCD
When a control panel needs a numeric or segment LCD plus a USB service port and a handful of digital I/O, PIC18F65J94-I/MR is a strong single-chip solution. The CTMU enables capacitive touch keys for glass-front panels, the RTCC timestamps event logs, and the 12-bit ADC reads analogue panel signals such as temperature or pressure. Compared to using a host MCU plus separate LCD driver plus separate USB chip, this part shrinks the BOM, reduces firmware complexity, and helps meet long-life industrial certifications where component count is a design risk.
추천
Portable Medical Instrumentation
Battery-powered medical devices such as pulse oximeters, glucose meters, and handheld diagnostic probes benefit from PIC18F65J94-I/MR's nanoWatt XLP sleep behaviour, integrated LCD, and CTMU for touch-sense user interfaces. The 32 KB Flash accommodates mid-complexity application code with safety margins for revision histories, while the 4 KB RAM handles buffer averages and signal-conditioning pipelines. Use this part where deterministic 8-bit execution and long battery life outweigh the benefits of a Cortex-M core, and where the LCD integration cuts component count and PCB real estate.
추천
Capacitive Touch User Interfaces
The PIC18F65J94 family integrates a Charge Time Measurement Unit (CTMU) and mTouch sensing logic that turn any standard I/O pin into a capacitive touch electrode. Designers can build glass-front panels with sliders, wheels, and buttons without dedicated touch ICs. Pair the PIC18F65J94-I/MR with a segmented LCD driven by the same chip for an industrial-style HMI with both touch and visual feedback in one MCU. The 64-pin QFN provides enough pins for 16-32 touch channels plus LCD segment lines simultaneously.
추천
Automotive Aftermarket Accessories
For non-safety automotive accessories such as USB-programmable trip computers, USB-charging hubs with status displays, or 12 V-powered multi-function gauges, PIC18F65J94-I/MR delivers USB, segmented LCD, and battery-backup RTCC in a compact QFN footprint. Designers should be aware that this is the industrial (-40 °C to +85 °C) grade, not AEC-Q100 qualified; for under-hood or safety-relevant parts, an automotive-grade PIC18 K-series variant is required. Always validate against the application temperature profile before committing to production.
추천
Data-Acquisition Modules
Module makers integrating multi-channel analogue data acquisition benefit from the PIC18F65J94-I/MR's 12-bit ADC, USB connectivity for streaming to a host PC, and segmented LCD for local read-out. The 32 KB Flash accommodates calibration tables and DSP-style filtering, while 4 KB RAM buffers multi-kilosample streams before USB transmits them. With nanoWatt XLP, the module drops into deep sleep between scans, drawing microamps. This part is a good fit for handheld loggers, environmental sensors, and laboratory bench instruments where an 8-bit MCU is sufficient.
추천
추천 제품 요약
엔지니어링 참조 데이터: PIC18F65J94-I/MR — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PIC18F65J94T-I/MR | PIC18F65J94-I/PT | PIC18F66J94-I/MR | PIC18F67J94-I/MR | PIC18F65J90-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | QFN-64 (9x9) | QFN-64 (9x9) - same | TQFP-64 (10x10) - different footprint, pin-compatible | QFN-64 (9x9) - same | QFN-64 (9x9) - same | TQFP-64 (10x10) - different footprint |
| Flash Memory | 32 KB | 32 KB (same die) | 32 KB (same die) | 64 KB (+100%) | 128 KB (+300%) | Smaller (J90 family) |
| Maximum CPU Speed | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 40 MHz (typical J90) |
| USB | Full-Speed USB 2.0 | Full-Speed USB 2.0 | Full-Speed USB 2.0 | Full-Speed USB 2.0 | Full-Speed USB 2.0 | No |
| LCD Segments | Up to 256 | Up to 256 | Up to 256 | Up to 256 | Up to 256 | Up to 192 (typical J90) |
| ADC | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit | 10-bit or 12-bit (variant-dependent) |
| Low-Power Feature | nanoWatt XLP + Vbat | nanoWatt XLP + Vbat | nanoWatt XLP + Vbat | nanoWatt XLP + Vbat | nanoWatt XLP + Vbat | nanoWatt XLP + Vbat |
| Temperature Range | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) |
주요 차별점
- Single-chip USB + LCD + RTCC + CTMU solution (vs PIC18F46K22-I/P)
- QFN-64 with larger Flash density in same footprint (vs PIC18F65J94T-I/MR)
- Drop-in QFN-64 with same peripherals (vs PIC18F65J94-I/PT (TQFP-64))
설계 노트
The PIC18F65J94-I/MR is a J-series device without an internal voltage regulator, so it requires a clean external 3.3 V supply (typical operating range 2.0 V to 3.6 V). Add 100 nF decoupling close to every VDD pin, plus a bulk 1-10 uF on the main rail, to handle USB inrush currents and segmented LCD switching transients. For Vbat backup, route a coin-cell through a low-leakage diode or load switch; nanoWatt XLP keeps Vbat current in the nano-amp range with the RTCC running.
At 64 MHz full throughput the PIC18F65J94-I/MR dissipates well under 100 mW and does not require a heatsink. However, the QFN-64 exposed thermal pad MUST be soldered to a grounded copper pour to achieve the rated thermal resistance and to provide a low-impedance ground return. Without a proper thermal pad connection the die temperature rises under sustained USB traffic, which can degrade ADC accuracy over time.
Route D+ and D- as a 90-ohm differential pair with continuous reference ground, keep the pair as short as possible, and avoid stubs. Place the USB DP pull-up resistor (if used in device mode) close to the D+ pin. Place the 12 MHz primary crystal (or resonator) within a few millimetres of OSC1/OSC2 with short traces and a guarded ground pour. Avoid routing LCD segments across noisy digital traces to keep display contrast clean.
Always consult the PIC18F65J94 device errata before finalising firmware - known silicon anomalies include ADC and CTMU behaviour that may require work-arounds. Do not assume the I-temp grade suits under-hood automotive use; for AEC-Q100 applications, choose an automotive-grade variant. Remember that RTCC and Vbat backup require proper VBAT pin handling - leaving VBAT floating can cause unpredictable power-up behaviour.
규정 준수 정보
RoHS and REACH compliance per Abacus Technologies listing (EU RoHS Compliant, DRC Conflict Free). AEC-Q100 NOT qualified - industrial (-40 to +85 °C) grade only. For automotive, select an AEC-Q100-qualified PIC18 variant.
