PIC18F65J94-I/PT - 8-bit 64MHz PIC MCU 32KB Flash USB LCD | Microchip
MPN: PIC18F65J94-I/PT ✓ Hoạt độngPIC18F65J94-I/PT Tóm tắt
A PIC18 microcontroller is an 8-bit Harvard-architecture RISC MCU from Microchip's PIC family, widely used for embedded control. The PIC18F65J94 belongs to the PIC18J subfamily and sits within the broader PIC18 > PIC > 8-bit MCU > microcontroller > semiconductor taxonomy. It combines the standard PIC18 peripheral set with two rare features for an 8-bit MCU: a Full-Speed USB 2.0 device peripheral and a segmented LCD driver that supports up to 256 segments, eliminating the need for an external driver.
Key features include 32KB (16K x 16) Flash with self-programmability, 4KB RAM, 12-bit ADC with up to 16 channels, hardware RTCC, CTMU (Charge Time Measurement Unit) for capacitive touch, hardware CRC, mTouch support, nanoWatt XLP sleep modes drawing under 100 nA, and a Vbat mode for RTC retention from a backup battery. The 64-pin TQFP gives access to 52 digital I/O pins plus dedicated analog, USB, and LCD segment pins.
The architecture uses an 8-bit data path with 16-bit instructions and a two-stage pipeline, delivering 16 MIPS at 64MHz while consuming significantly less power than 32-bit alternatives. The CTMU block enables cost-effective capacitive touch sensing, and the 12-bit ADC plus dedicated op-amp front-ends make the part suitable for sensor-interface designs without external analog ICs.
Typical applications include USB-connected human-interface devices, segment-LCD user-interface panels (appliance controls, metering, industrial HMIs), capacitive-touch keypads, battery-powered data loggers, and consumer/industrial sensor nodes. The wide Vbat support makes it especially attractive for products that must keep a real-time clock running while the main supply is removed.
When designing with the PIC18F65J94-I/PT, place the decoupling network close to the VDD/VCAP pins and ensure the 64-pin TQFP pad has adequate copper for thermal dissipation. The MPLAB X IDE with XC8 compiler is the recommended toolchain, and Microchip's USB Framework and mTouch libraries substantially cut firmware development time for the integrated peripherals.
This page synthesizes drop-in alternatives, distributor pricing, and practical design notes that go beyond what is found on the Microchip datasheet alone, helping engineers choose between the PIC18F65J94 and its pin-compatible family members.
Bộ thay thế dễ dàng lắp đặt cho PIC18F65J94-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 PIC18F65J94-I/PT (cùng hình factor và footprint) — khác nhau ở Package, ADC, Operating Temperature, Core Architecture, LCD Driver.
PIC18F65J94T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F67J94-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F66J94-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F65J90-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F65J11-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F65J94-I/PT Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit RISC Microcontroller |
| Core | PIC18 (Harvard RISC) |
| Family | PIC18FxxJ94 (XLP, USB, LCD) |
| CPU Architecture | 8-bit data, 16-bit instructions, 2-stage pipeline |
| Maximum CPU Frequency | 64 MHz (16 MIPS) |
| Program Memory (Flash) | 32 KB (16K x 16) |
| Data RAM | 4 KB |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| I/O Pins | 52 (digital) + analog/USB/LCD |
| Hộp | TQFP-64 (PT) 10x10x1 mm |
| ADC | 12-bit, up to 16 channels |
| USB | USB 2.0 Full-Speed (12 Mbps) device |
| LCD Driver | Up to 256 segments |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial, -I) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC18F65J94-I/PT
| Chân 1 | RH0/SEG32 — Digital I/O RH0 / LCD segment 32 |
| Chân 2 | RH1/SEG33 — Digital I/O RH1 / LCD segment 33 |
| Chân 3 | RH2/SEG34 — Digital I/O RH2 / LCD segment 34 |
| Chân 4 | RH3/SEG35 — Digital I/O RH3 / LCD segment 35 |
| Chân 5 | VUSB — USB internal voltage regulator output |
| Chân 6 | VDD — Positive supply (2.0 V to 3.6 V) |
| Chân 7 | Vbat — Backup battery for RTCC |
| Chân 8 | AVDD — Analog supply for ADC |
| Chân 9 | AVSS — Analog ground |
| Chân 10 | RA0/AN0 — Analog input 0 / digital I/O |
| Chân 11 | RA1/AN1 — Analog input 1 / digital I/O |
| Chân 12 | RA2/AN2/CVREF — Analog input 2 / CVREF output |
| Chân 13 | RA3/AN3 — Analog input 3 / digital I/O |
| Chân 14 | RA4/AN4 — Analog input 4 / digital I/O |
| Chân 15 | RA5/AN5 — Analog input 5 / digital I/O |
| Chân 16 | RA6 — Digital I/O RA6 |
| Chân 17 | RA7 — Digital I/O RA7 |
| Chân 18 | VSS — Digital ground |
| Chân 19 | VCAP — Internal voltage regulator filter capacitor |
| Chân 20 | RB0/INT0 — Digital I/O RB0 / external interrupt 0 |
| Chân 21 | RB1/INT1 — Digital I/O RB1 / external interrupt 1 |
| Chân 22 | RB2/INT2 — Digital I/O RB2 / external interrupt 2 |
| Chân 23 | RB3/INT3 — Digital I/O RB3 / external interrupt 3 |
| Chân 24 | RB4 — Digital I/O RB4 |
| Chân 25 | RB5 — Digital I/O RB5 |
| Chân 26 | RB6/ICSPCLK — Digital I/O RB6 / ICSP clock |
| Chân 27 | RB7/ICSPDAT — Digital I/O RB7 / ICSP data |
| Chân 28 | RC0 — Digital I/O RC0 |
| Chân 29 | RC1 — Digital I/O RC1 |
| Chân 30 | RC2 — Digital I/O RC2 |
| Chân 31 | RC3 — Digital I/O RC3 |
| Chân 32 | RC4 — Digital I/O RC4 |
| Chân 33 | RC5 — Digital I/O RC5 |
| Chân 34 | RC6 — Digital I/O RC6 |
| Chân 35 | RC7 — Digital I/O RC7 |
| Chân 36 | RD0 — Digital I/O RD0 |
| Chân 37 | RD1 — Digital I/O RD1 |
| Chân 38 | RD2 — Digital I/O RD2 |
| Chân 39 | RD3 — Digital I/O RD3 |
| Chân 40 | RD4 — Digital I/O RD4 |
| Chân 41 | RD5 — Digital I/O RD5 |
| Chân 42 | RD6 — Digital I/O RD6 |
| Chân 43 | RD7 — Digital I/O RD7 |
| Chân 44 | RE0 — Digital I/O RE0 |
| Chân 45 | RE1 — Digital I/O RE1 |
| Chân 46 | RE2 — Digital I/O RE2 |
| Chân 47 | RE3 — Digital I/O RE3 |
| Chân 48 | RE4 — Digital I/O RE4 |
| Chân 49 | RE5 — Digital I/O RE5 |
| Chân 50 | RE6 — Digital I/O RE6 |
| Chân 51 | RE7 — Digital I/O RE7 |
| Chân 52 | RF0 — Digital I/O RF0 |
| Chân 53 | RF1 — Digital I/O RF1 |
| Chân 54 | RF2 — Digital I/O RF2 |
| Chân 55 | RF3 — Digital I/O RF3 |
| Chân 56 | RF4 — Digital I/O RF4 |
| Chân 57 | RF5 — Digital I/O RF5 |
| Chân 58 | RF6 — Digital I/O RF6 |
| Chân 59 | RF7 — Digital I/O RF7 |
| Chân 60 | RG0 — Digital I/O RG0 |
| Chân 61 | RG1 — Digital I/O RG1 |
| Chân 62 | RG2 — Digital I/O RG2 |
| Chân 63 | RG3 — Digital I/O RG3 |
| Chân 64 | RG4 — Digital I/O RG4 |
Ứng dụng tiêu biểu
PIC18F65J94-I/PT phù hợp cho 6 Áp dụngs: USB Human Interface Devices, Segment LCD Display Panels, Capacitive Touch Keypads, Battery-Powered Data Loggers, Industrial Sensor Nodes, Consumer Appliance Controllers.
USB Human Interface Devices
The PIC18F65J94-I/PT's integrated Full-Speed USB 2.0 device peripheral with on-chip transceiver makes it ideal for USB keyboards, mice, gamepads and custom HID peripherals. The 32 KB Flash is enough to hold the USB stack plus an HID report descriptor, while 4 KB RAM comfortably buffers incoming/outgoing reports. Operating at 64 MHz / 16 MIPS, the core can sustain polling rates above 1 kHz with headroom for debounce, lighting effects, and capacitive-touch keys via the on-chip CTMU.
Được đề xuất
Segment LCD Display Panels
With up to 256 segments of on-chip LCD drive, the PIC18F65J94-I/PT removes the need for an external LCD driver in appliance, metering, and industrial-HMI designs. The 52 I/O pins allow up to 4 COM x 64 SEG or 8 COM x 32 SEG configurations, and the 32 KB Flash holds multilingual strings plus the GUI logic. The 12-bit ADC and CTMU enable simultaneous sensor input and capacitive-touch keys without extra analog ICs.
Được đề xuất
Capacitive Touch Keypads
The PIC18F65J94-I/PT integrates Microchip's CTMU and mTouch library, supporting capacitive touch sensing directly on the digital I/O pins - perfect for sealed-appliance keypads and industrial controls. Combined with the segment LCD driver, a single chip handles touch input and display output, dramatically reducing BOM cost. The nanoWatt XLP sleep current keeps idle touch-scanning power budgets under 1 mA.
Được đề xuất
Battery-Powered Data Loggers
The PIC18F65J94-I/PT runs from 2.0 V to 3.6 V with nanoWatt XLP sleep modes drawing under 100 nA and a dedicated Vbat pin for RTC retention. Its 12-bit ADC, hardware RTCC, and 4 KB RAM let it timestamp and store sensor readings for hours or weeks on a single cell. The wide supply range also allows direct operation from 2 x AA alkaline cells with no boost converter required.
Được đề xuất
Industrial Sensor Nodes
With 16 ADC channels, hardware CRC, CTMU, and a robust -40 C to +85 C industrial temperature range, the PIC18F65J94-I/PT fits industrial sensor-interface nodes that aggregate multiple transducers. The USB device port enables convenient firmware updates or tethered diagnostics on the factory floor. The 32 KB Flash comfortably holds CAN-style or Modbus protocol stacks via bit-banged UARTs when full networking is not required.
Được đề xuất
Consumer Appliance Controllers
Washing machines, microwave ovens, and induction cooktops benefit from the PIC18F65J94-I/PT's combination of segment-LCD control, capacitive-touch buttons, USB service port, and Vbat-backed RTC. The 52 I/O pins drive relays, triacs and indicator LEDs directly, and the wide 2.0 V to 3.6 V supply simplifies mixed 3.3 V/5 V designs. The XLP sleep modes help meet strict standby-power regulations such as the EU EcoDesign directive.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F65J94-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 | PIC18F65J94T-I/PT | PIC18F67J94-I/PT | PIC18F66J94-I/PT | PIC18F65J90-I/PT | PIC18F65J11-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (PT) 10x10 mm | TQFP-64 (PT) 10x10 mm | TQFP-64 (PT) 10x10 mm | TQFP-64 (PT) 10x10 mm | TQFP-64 (PT) 10x10 mm | TQFP-64 (PT) 10x10 mm |
| Program Flash | 32 KB | 32 KB | 128 KB | 64 KB | 32 KB | 32 KB |
| RAM | 4 KB | 4 KB | 8 KB | 8 KB | 4 KB | 2 KB |
| Max Frequency | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS |
| USB Peripheral | USB FS device, integrated | USB FS device, integrated | USB FS device, integrated | USB FS device, integrated | External transceiver required | USB FS device, integrated |
| Segment LCD Driver | Up to 256 segments | Up to 256 segments | Up to 256 segments | Up to 256 segments | Up to 256 segments | None |
| nanoWatt XLP | Yes | Yes | Yes | Yes | Yes | No |
| Operating Temperature | -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) |
Bảo phân biệt quan trọng
- Integrated Full-Speed USB 2.0 with on-chip transceiver (vsPIC18F65J90-I/PT)
- 256-segment LCD driver plus nanoWatt XLP on the same die (vsPIC18F65J11-I/PT)
- 32 KB Flash with PIC18 instruction-set compatibility (vsPIC18F67J94-I/PT)
Ghi chú thiết kế
The PIC18F65J94-I/PT operates from 2.0 V to 3.6 V. Place a 100 nF decoupling capacitor within 5 mm of each VDD/AVDD/VCAP pair and a bulk 4.7 uF to 10 uF tantalum or ceramic on the main supply rail. The Vbat pin supports a backup battery (typically CR2032) to retain the RTCC when VDD is removed - size the series resistor per the datasheet's Vbat section to limit inrush current. Use nanoWatt XLP sleep modes (DID = 0x3F) to drop idle current below 100 nA in battery data-logger designs.
The TQFP-64 (10x10 mm) package has a thermal resistance of approximately 35 C/W theta-JA on a 4-layer JEDEC test board. Tie all VSS/AVSS pins to a solid ground pour and stitch the VDD traces with vias to inner power planes to keep digital return currents short. Place the 32.768 kHz crystal and load capacitors as close as possible to SOSCO/SOSCI to minimize cycle-to-cycle jitter on the RTCC and USB-derived baud rates.
Do not leave the VUSB pin floating - it requires a 220 nF decoupling capacitor for the internal USB voltage regulator. Avoid driving the USB DP/DM pins with a 5 V rail; the PIC18F65J94 is a 3.3 V part and the USB lines are not 5 V tolerant. When migrating code from PIC18F45K22-style designs, note that the J94 family uses a different Configuration Word layout and oscillator tuning register map - rebuild the configuration bits rather than copy-pasting them.
Thông tin tuân thủ
Per Abacus Electronics compliance summary the PIC18F65J94-I/PT is EU RoHS and REACH compliant with DRC conflict-free status. AEC-Q100 automotive qualification is not claimed - choose PIC18F46J11T-I/PT or PIC18F67J94T-I/PT from the same family if AEC-Q100 is required.
