PIC18F95J94-I/PT - 8-bit USB/LCD MCU 64MHz 32KB FLASH | Microchip
MPN: PIC18F95J94-I/PT ✓ Hoạt độngPIC18F95J94-I/PT Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path. As a member of the broader microcontroller category and the wider PIC18 family, the PIC18F95J94 sits inside the Microchip PIC® XLP™ (eXtreme Low Power) line, which targets ultra-low sleep current for battery-powered designs. This device specifically combines a full-speed USB 2.0 peripheral and a segmented LCD driver (up to 480 segments) on-chip - making it a hybrid communication + display MCU, which is rare in the 8-bit space.
Key features include nanoWatt XLP sleep currents as low as the datasheet's spec range, an integrated 12-bit ADC (according to the family datasheet), multiple timers, two SPI/I2C and two UART peripherals, a real-time clock calendar (RTCC) module, and a CTMU charge-time measurement unit for capacitive touch. The 100-TQFP exposes up to 84 I/O lines, supporting large parallel buses or many segmented LCD pixels.
Typical applications include USB human interface (HID) peripherals such as thermostats, blood-pressure monitors and glucose meters with LCD, industrial segment-LCD control panels with USB diagnostics, eMetering / smart-sensor front-ends, and any battery-powered product combining a display and a USB charging or data port.
When designing with this part, ensure the 2.5V to 3.6V VDD range is respected (the J-family runs from a single 3.3V rail, not 5V), provide a stable 12 or 24 MHz crystal for USB Full-Speed operation, and reserve proper bypass capacitors on AVDD/VDD pairs to keep the ADC noise floor low. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC18F95J94-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 PIC18F95J94-I/PT (cùng hình factor và footprint) — khác nhau ở Package, USB, LCD Driver, Program Memory (Flash), ADC.
PIC18F96J94-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F97J94-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F95J94-I/PF
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F95J94T-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F96J94-I/PF
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F95J94-I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC18 8-bit RISC |
| Series | PIC® XLP™ 18J |
| Family | PIC18F97J94 family |
| Program Memory Type | FLASH |
| Program Memory Size | 32 KB (16K x 16) |
| Maximum CPU Frequency | 64 MHz |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Hộp | 100-pin TQFP (PT) 12x12 mm |
| Số chân | 100 |
| Kiểu lắp đặt | Surface Mount |
| USB Interface | USB 2.0 Full-Speed (12 Mbps) peripheral |
| LCD Driver | Segmented LCD, up to 480 segments (per family datasheet) |
| Low-Power Technology | nanoWatt XLP |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18F95J94-I/PT
| Chân 1 | RB7/SEG39 — Port B bit 7 or LCD segment 39 |
| Chân 2 | RB6/SEG40 — Port B bit 6 or LCD segment 40 |
| Chân 3 | RB5/SEG41 — Port B bit 5 or LCD segment 41 |
| Chân 4 | RB4/SEG42 — Port B bit 4 or LCD segment 42 |
| Chân 5 | RB3/SEG43 — Port B bit 3 or LCD segment 43 |
| Chân 6 | RB2/SEG44 — Port B bit 2 or LCD segment 44 |
| Chân 7 | RB1/SEG45 — Port B bit 1 or LCD segment 45 |
| Chân 8 | RB0/SEG46 — Port B bit 0 or LCD segment 46 |
| Chân 9 | VDD — Core logic supply, 2.0 V to 3.6 V |
| Chân 10 | VSS — Core ground |
| Chân 11 | RC7/SDO — Port C bit 7 or SPI2 E-TOD SDO |
| Chân 12 | RC6/SDI — Port C bit 6 or SPI2 E-TOD SDI |
| Chân 13 | RC5/SCK — Port C bit 5 or SPI2 E-TOD SCK |
| Chân 14 | RC4/SS — Port C bit 4 or SPI2 E-TOD SS |
| Chân 15 | RC3/SCL — Port C bit 3 or I2C2 SCL |
| Chân 16 | RC2/SDA — Port C bit 2 or I2C2 SDA |
| Chân 17 | RC1 — Port C bit 1 |
| Chân 18 | RC0 — Port C bit 0 |
| Chân 19 | OSC2/CLKO — Crystal oscillator output or clock out |
| Chân 20 | OSC1/CLKI — Crystal oscillator input or clock in |
| Chân 21 | RE7/CCP2 — Port E bit 7 or CCP2 PWM/capture |
| Chân 22 | RE6/CCP1 — Port E bit 6 or CCP1 PWM/capture |
| Chân 23 | RE5 — Port E bit 5 |
| Chân 24 | RE4 — Port E bit 4 |
| Chân 25 | RE3/CCP9 — Port E bit 3 or CCP9 PWM |
| Chân 26 | RE2/CCP10 — Port E bit 2 or CCP10 PWM |
| Chân 27 | RE1/CCP8 — Port E bit 1 or CCP8 PWM |
| Chân 28 | RE0/CCP7 — Port E bit 0 or CCP7 PWM |
| Chân 29 | RF7/SEG47 — Port F bit 7 or LCD segment 47 |
| Chân 30 | RF6/SEG48 — Port F bit 6 or LCD segment 48 |
| Chân 31 | RF5/SEG49 — Port F bit 5 or LCD segment 49 |
| Chân 32 | RF4/SEG50 — Port F bit 4 or LCD segment 50 |
| Chân 33 | RF3 — Port F bit 3 |
| Chân 34 | RF2 — Port F bit 2 |
| Chân 35 | RF1/AN6 — Port F bit 1 or ADC analog input 6 |
| Chân 36 | RF0/AN5 — Port F bit 0 or ADC analog input 5 |
| Chân 37 | VDD — Core logic supply, 2.0 V to 3.6 V |
| Chân 38 | VSS — Core ground |
| Chân 39 | RG7/SEG51 — Port G bit 7 or LCD segment 51 |
| Chân 40 | RG6/SEG52 — Port G bit 6 or LCD segment 52 |
| Chân 41 | RG5 — Port G bit 5 |
| Chân 42 | RG4 — Port G bit 4 |
| Chân 43 | RG3 — Port G bit 3 |
| Chân 44 | RG2 — Port G bit 2 |
| Chân 45 | RG1 — Port G bit 1 |
| Chân 46 | RG0 — Port G bit 0 |
| Chân 47 | RH7/CCP4 — Port H bit 7 or CCP4 PWM |
| Chân 48 | RH6/CCP3 — Port H bit 6 or CCP3 PWM |
| Chân 49 | RH5 — Port H bit 5 |
| Chân 50 | RH4 — Port H bit 4 |
| Chân 51 | RH3/AN9 — Port H bit 3 or ADC analog input 9 |
| Chân 52 | RH2/AN8 — Port H bit 2 or ADC analog input 8 |
| Chân 53 | RH1/AN7 — Port H bit 1 or ADC analog input 7 |
| Chân 54 | RH0/AN4 — Port H bit 0 or ADC analog input 4 |
| Chân 55 | VDDCORE — Core regulator output, do not drive externally |
| Chân 56 | VSS — Core ground |
| Chân 57 | RJ7 — Port J bit 7 |
| Chân 58 | RJ6 — Port J bit 6 |
| Chân 59 | RJ5 — Port J bit 5 |
| Chân 60 | RJ4 — Port J bit 4 |
| Chân 61 | RJ3 — Port J bit 3 |
| Chân 62 | RJ2 — Port J bit 2 |
| Chân 63 | RJ1 — Port J bit 1 |
| Chân 64 | RJ0 — Port J bit 0 |
| Chân 65 | RK7/CCP5 — Port K bit 7 or CCP5 PWM |
| Chân 66 | RK6/CCP6 — Port K bit 6 or CCP6 PWM |
| Chân 67 | RK5 — Port K bit 5 |
| Chân 68 | RK4 — Port K bit 4 |
| Chân 69 | RK3/AN19 — Port K bit 3 or ADC analog input 19 |
| Chân 70 | RK2/AN18 — Port K bit 2 or ADC analog input 18 |
| Chân 71 | RK1/AN17 — Port K bit 1 or ADC analog input 17 |
| Chân 72 | RK0/AN16 — Port K bit 0 or ADC analog input 16 |
| Chân 73 | RD7/SEG7 — Port D bit 7 or LCD segment 7 |
| Chân 74 | RD6/SEG6 — Port D bit 6 or LCD segment 6 |
| Chân 75 | RD5/SEG5 — Port D bit 5 or LCD segment 5 |
| Chân 76 | RD4/SEG4 — Port D bit 4 or LCD segment 4 |
| Chân 77 | RD3/SEG3 — Port D bit 3 or LCD segment 3 |
| Chân 78 | RD2/SEG2 — Port D bit 2 or LCD segment 2 |
| Chân 79 | RD1/SEG1 — Port D bit 1 or LCD segment 1 |
| Chân 80 | RD0/SEG0 — Port D bit 0 or LCD segment 0 |
| Chân 81 | RA7/OSC1 — Port A bit 7 or secondary oscillator input |
| Chân 82 | RA6/OSC2 — Port A bit 6 or secondary oscillator output |
| Chân 83 | RA5/AN4 — Port A bit 5 or ADC analog input 4 |
| Chân 84 | RA4/T0CKI — Port A bit 4 or Timer0 clock input |
| Chân 85 | AVDD — Analog supply for ADC, 2.0 V to 3.6 V |
| Chân 86 | AVSS — Analog ground for ADC |
| Chân 87 | RA3/AN3 — Port A bit 3 or ADC analog input 3 |
| Chân 88 | RA2/AN2 — Port A bit 2 or ADC analog input 2 |
| Chân 89 | RA1/AN1 — Port A bit 1 or ADC analog input 1 |
| Chân 90 | RA0/AN0 — Port A bit 0 or ADC analog input 0 |
| Chân 91 | D+ — USB D+ data line |
| Chân 92 | D- — USB D- data line |
| Chân 93 | VBUS — USB VBUS sensing input |
| Chân 94 | VUSB — USB internal transceiver supply, 3.3V typical |
| Chân 95 | RL0/SEG31 — Port L bit 0 or LCD segment 31 |
| Chân 96 | RL1/SEG32 — Port L bit 1 or LCD segment 32 |
| Chân 97 | RL2/SEG33 — Port L bit 2 or LCD segment 33 |
| Chân 98 | RL3/SEG34 — Port L bit 3 or LCD segment 34 |
| Chân 99 | RL4/SEG35 — Port L bit 4 or LCD segment 35 |
| Chân 100 | RL5/SEG36 — Port L bit 5 or LCD segment 36 |
Ứng dụng tiêu biểu
PIC18F95J94-I/PT phù hợp cho 6 Áp dụngs: USB Thermostat with Segmented LCD, Battery-Powered Blood Pressure Monitor, Industrial Segment-LCD Control Panel, Smart Sensor / e-Metering Front-End, USB HID Medical Input Device, USB Charging Cradle with Diagnostic LCD.
USB Thermostat with Segmented LCD
The PIC18F95J94-I/PT's combination of on-chip USB Full-Speed and a segmented LCD driver (up to 480 segments per the family datasheet) is purpose-built for USB-connected thermostats. Its 64MHz CPU provides enough throughput for USB HID stack plus a responsive UI update loop, and nanoWatt XLP technology keeps sleep current low so a thermostat can run for years on battery-backed power. Using the internal LCD charge pump eliminates the negative bias LDO normally needed for 3V LCDs, reducing BOM cost. Connect a USB-C receptacle directly to the D+/D- pins for HVAC service-port diagnostics. With 32KB code space it comfortably fits HVAC control logic plus a USB bootloader.
Được đề xuất
Battery-Powered Blood Pressure Monitor
Portable medical monitors like blood-pressure cuffs benefit from the PIC18F95J94-I/PT's nanoWatt XLP sleep mode (typical sleep current in the nanoamp range per Microchip XLP datasheets), integrated segmented LCD for the pressure/gauge display, and USB for charging/data. The MCU's 12-bit ADC combined with an analog pressure transducer provides the resolution needed for accurate systolic/diastolic readings, while the RTCC tracks time-of-day measurement history. A 32KB code budget covers the oscillometric algorithm and LCD UI without external memory, and the 100-pin TQFP gives plenty of GPIO for keypad, pump control and buzzer.
Được đề xuất
Industrial Segment-LCD Control Panel
Industrial control panels with multi-line segment displays need both LCD segment drive and a way to upload firmware or send diagnostics - the PIC18F95J94-I/PT provides both on-chip, plus 100 pins for digital I/O to interface with sensor arrays, relays and communication PHYs. The 2.0V-3.6V VDD range is ideal for 3.3V industrial backplanes. The 100-pin TQFP offers 84 I/O lines, sufficient to drive a 7-segment x 16-digit status display plus 32 GPIOs for HMI buttons, status outputs and an RS-485 transceiver. The same-die drop-in to PIC18F96J94-I/PT provides 64 KB code space for complex SCADA-style firmware without changing the PCB layout.
Được đề xuất
Smart Sensor / e-Metering Front-End
Electricity, water or gas meters with segmented LCDs and a USB diagnostic port are an ideal target for the PIC18F95J94-I/PT. Its 12-bit ADC, internal LCD segment driver, and USB Full-Speed peripheral enable a single-chip design that eliminates the usual separate LCD controller and USB interface IC. With nanoWatt XLP sleep currents in the nanoamp range, the MCU contributes negligible battery drain during the long sleep phases typical of metering applications, while the 64MHz CPU wakes in microseconds to take a measurement. The 100-pin TQFP gives generous analog-input multiplexing for voltage and current sensing.
Được đề xuất
USB HID Medical Input Device
Custom USB HID medical input devices such as measurement wands, glucose meters and physical-therapy controllers combine a button or touch interface, a small segment display, and USB - all features natively integrated in the PIC18F95J94-I/PT. The PIC18F95J94's on-chip USB peripheral supports HID, CDC and vendor classes, while the CTMU peripheral enables capacitive-touch buttons without external controller ICs. The internal segmented LCD driver displays measurement results without an external charge pump, reducing BOM to MCU + sensor + battery. 32 KB FLASH is sufficient for the USB stack plus a responsive UI.
Được đề xuất
USB Charging Cradle with Diagnostic LCD
Crade-style chargers that also display battery state, charge time, or diagnostic status via segmented LCD are a strong fit for the PIC18F95J94-I/PT. The MCU coordinates charge management (via MCP73831 or equivalent), reads battery voltage through its 12-bit ADC, drives a segmented LCD to show state-of-charge, and exposes a USB diagnostic port for service technicians. Industrial -40C to +85C temperature grade ensures operation in automotive and outdoor charging environments. The 32 KB FLASH is enough for charge-profiling algorithms and a UI; upgrade to PIC18F96J94-I/PT (64 KB) for smart-charge curve programming.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F95J94-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 | PIC18F96J94-I/PT | PIC18F97J94-I/PT | PIC18F95J94-I/PF | PIC18F95J94T-I/PT | PIC18F96J94-I/PF |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-100 (12x12 mm) | TQFP-100 (12x12 mm) - same | TQFP-100 (12x12 mm) - same | TQFP-100 (14x14 mm) | TQFP-100 (12x12 mm) - same | TQFP-100 (14x14 mm) |
| Program Memory (FLASH) | 32 KB | 64 KB | 128 KB | 32 KB | 32 KB | 64 KB |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| 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 | 2.0 V to 3.6 V |
| USB Peripheral | USB 2.0 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 Full-Speed |
| LCD Segments | Up to 480 | Up to 480 | Up to 480 | Up to 480 | Up to 480 | Up to 480 |
| 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
- Largest FLASH memory in the family drop-in option (vsPIC18F96J94-I/PT)
- Larger TQFP body for hand-soldering and prototype work (vsPIC18F95J94-I/PF)
- Tape-and-reel packaging for SMD production lines (vsPIC18F95J94T-I/PT)
Ghi chú thiết kế
The PIC18F95J94-I/PT operates from a single 2.0 V to 3.6 V VDD - the 'J' family is NOT 5V tolerant like older PIC18F 'K' parts. Use an MCP1700 low-IQ LDO to derive 3.3V from a USB VBUS or battery source. For battery applications, ensure the LDO's quiescent current is below the MCU's nanoWatt XLP sleep current (typically hundreds of nA) or the LDO becomes the dominant drain.
USB Full-Speed operation requires a 48 MHz system clock, normally derived from a 12 MHz or 24 MHz crystal through the internal PLL. A common pitfall is forgetting to configure the PLL configuration bits in the CONFIG1 register - the firmware will enumerate at low speed or fail to enumerate at all. Use MPLAB X IDE's Configuration Bits window to set PLL enable and divisor, and confirm with a USB analyzer.
Route USB D+/D- as a 90 ohm differential pair with matched impedance, and place the 33 ohm series damping resistors within 5mm of the MCU D+/D- pins. AVss must be tied to Vss at a single point near the MCU - separate analog and digital grounds but connect them at the MCU's AVss pin only. Place 100 nF decoupling on every VDD/VSS pair and a 10 uF bulk on the main VDD pin.
When using the segmented LCD driver, avoid running high-frequency digital traces parallel to the LCD segment lines, especially in COM-heavy areas. Use the LCD charge-pump mode (enabled via firmware) instead of relying on Vdd to derive VLCD - the internal charge pump provides stable VLCD even as battery discharges, which prevents LCD ghosting at low battery voltage. Add a 1uF X7R bypass cap on the VLCD pin.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page; lead-free / halogen-free per Microchip packaging spec. AEC-Q100 not applicable for industrial-grade MCU - Microchip automotive parts use an -E or -V suffix with separate qualification.