PIC18F65J94T-I/PT - 32KB Flash 8-Bit XLP USB MCU | Microchip
料号： PIC18F65J94T-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 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 概述
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.
直接替换替代料： PIC18F65J94T-I/PT ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC18F65J94T-I/PT （相同外形与封装尺寸） ——差异在于 ADC, LCD Driver, Package, Program Memory (Flash), Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
PIC18F65J94-I/PT
✅ 直接替换✓ 有现货
$3.89 / 个
查看数据手册 →PIC18F66J94-I/PT
✅ 直接替换✓ 有现货
$5.1 / 个
查看数据手册 →PIC18F67J94-I/PT
✅ 直接替换✓ 有现货
$4.35 / 个
查看数据手册 →PIC18F65J94-I/PF
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F65J94T-I/PT 最大额定值与电气特性
| 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 |
| 工作温度 | -40C to +85C (Industrial) |
| 封装 | 64-pin TQFP (10x10 mm) |
| 引脚数量 | 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 |
| 安装类型 | Surface Mount |
| MSL 等级 | 3 |
| RoHS 状态 | Compliant |
PIC18F65J94T-I/PT 引脚配置
| 引脚 1 | RB0/AN12 — I/O port B bit 0 / analog input 12 |
| 引脚 2 | RB1/AN10 — I/O port B bit 1 / analog input 10 |
| 引脚 3 | RB2/AN8 — I/O port B bit 2 / analog input 8 |
| 引脚 4 | RB3/AN9 — I/O port B bit 3 / analog input 9 |
| 引脚 5 | VSS — Ground reference |
| 引脚 6 | VDD — Positive supply 2.0-3.6 V |
| 引脚 7 | RB4/CCP5 — I/O port B bit 4 / CCP5 |
| 引脚 8 | RB5/CCP6 — I/O port B bit 5 / CCP6 |
| 引脚 9 | RB6/PGC — I/O port B bit 6 / ICSP clock |
| 引脚 10 | RB7/PGD — I/O port B bit 7 / ICSP data |
| 引脚 11 | RC0/SOSCO — I/O port C bit 0 / SOSC crystal out |
| 引脚 12 | RC1/SOSCI — I/O port C bit 1 / SOSC crystal in |
| 引脚 13 | RC2/CCP2 — I/O port C bit 2 / CCP2 |
| 引脚 14 | RC3/SEG31 — I/O port C bit 3 / LCD segment 31 |
| 引脚 15 | RC4/D-/VMO — I/O port C bit 4 / USB D- or VPO |
| 引脚 16 | RC5/D+/VPO — I/O port C bit 5 / USB D+ or VMO |
| 引脚 17 | RC6/TX1/CK1 — I/O port C bit 6 / UART1 TX |
| 引脚 18 | RC7/RX1/DT1 — I/O port C bit 7 / UART1 RX |
| 引脚 19 | VSS — Ground |
| 引脚 20 | VDD — Positive supply 2.0-3.6 V |
| 引脚 21 | RD0/SEG0 — I/O port D bit 0 / LCD segment 0 |
| 引脚 22 | RD1/SEG1 — I/O port D bit 1 / LCD segment 1 |
| 引脚 23 | RD2/SEG2 — I/O port D bit 2 / LCD segment 2 |
| 引脚 24 | RD3/SEG3 — I/O port D bit 3 / LCD segment 3 |
| 引脚 25 | RD4/SEG4 — I/O port D bit 4 / LCD segment 4 |
| 引脚 26 | RD5/SEG5 — I/O port D bit 5 / LCD segment 5 |
| 引脚 27 | RD6/SEG6 — I/O port D bit 6 / LCD segment 6 |
| 引脚 28 | RD7/SEG7 — I/O port D bit 7 / LCD segment 7 |
| 引脚 29 | RE0/SEG8 — I/O port E bit 0 / LCD segment 8 |
| 引脚 30 | RE1/SEG9 — I/O port E bit 1 / LCD segment 9 |
| 引脚 31 | RE2/SEG10 — I/O port E bit 2 / LCD segment 10 |
| 引脚 32 | RE3/SEG11 — I/O port E bit 3 / LCD segment 11 |
| 引脚 33 | RE4/SEG12 — I/O port E bit 4 / LCD segment 12 |
| 引脚 34 | RE5/SEG13 — I/O port E bit 5 / LCD segment 13 |
| 引脚 35 | RE6/SEG14 — I/O port E bit 6 / LCD segment 14 |
| 引脚 36 | RE7/SEG15 — I/O port E bit 7 / LCD segment 15 |
| 引脚 37 | VSS — Ground |
| 引脚 38 | VDD — Positive supply 2.0-3.6 V |
| 引脚 39 | RF0 — I/O port F bit 0 |
| 引脚 40 | RF1 — I/O port F bit 1 |
| 引脚 41 | RF2 — I/O port F bit 2 |
| 引脚 42 | RF3 — I/O port F bit 3 |
| 引脚 43 | RF4 — I/O port F bit 4 |
| 引脚 44 | RF5 — I/O port F bit 5 |
| 引脚 45 | RF6 — I/O port F bit 6 |
| 引脚 46 | RF7 — I/O port F bit 7 |
| 引脚 47 | RG0/SEG16 — I/O port G bit 0 / LCD segment 16 |
| 引脚 48 | RG1/SEG17 — I/O port G bit 1 / LCD segment 17 |
| 引脚 49 | RG2/SEG18 — I/O port G bit 2 / LCD segment 18 |
| 引脚 50 | RG3/SEG19 — I/O port G bit 3 / LCD segment 19 |
| 引脚 51 | RG4/SEG20 — I/O port G bit 4 / LCD segment 20 |
| 引脚 52 | MCLR — Master clear reset (active-low) |
| 引脚 53 | RA0/AN0 — I/O port A bit 0 / analog input 0 |
| 引脚 54 | RA1/AN1 — I/O port A bit 1 / analog input 1 |
| 引脚 55 | RA2/AN2 — I/O port A bit 2 / analog input 2 |
| 引脚 56 | RA3/AN3 — I/O port A bit 3 / analog input 3 |
| 引脚 57 | RA4/AN4 — I/O port A bit 4 / analog input 4 |
| 引脚 58 | RA5/AN5 — I/O port A bit 5 / analog input 5 |
| 引脚 59 | RA6/OSC2 — I/O port A bit 6 / crystal out |
| 引脚 60 | RA7/OSC1 — I/O port A bit 7 / crystal in |
| 引脚 61 | VSS — Ground |
| 引脚 62 | VDD — Positive supply 2.0-3.6 V |
| 引脚 63 | VUSB — USB internal 3.3V regulator output |
| 引脚 64 | ENVREG — Voltage regulator enable |
典型应用
PIC18F65J94T-I/PT 适用于 7 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： PIC18F65J94T-I/PT ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Integrated USB 2.0 + segmented LCD driver in one die （对比 PIC18F46J50)
- XLP ultra-low-power technology （对比 PIC18F4620)
- Code-compatible upgrade path within the same package （对比 PIC18F66J94-I/PT / PIC18F67J94-I/PT)
设计说明
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.
合规信息
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.
