PIC18F95J94-I/PF - 8-Bit USB/LCD MCU 32KB Flash 100-TQFP | Microchip
MPN: PIC18F95J94-I/PF ✓ Hoạt độngPIC18F95J94-I/PF Tóm tắt
An 8-bit microcontroller (MCU) is a programmable processor built around an 8-bit data path, well suited for control-oriented tasks such as sensor I/O, user-interface handling, USB peripherals, and human-machine interfaces. Within the broader semiconductor taxonomy, MCUs belong to integrated circuits -> microcontrollers -> 8-bit microcontrollers -> PIC18 family -> LCD/USB sub-family, and they sit alongside 16-bit and 32-bit MCUs in the embedded-processor hierarchy. The PIC18F95J94 extends this taxonomy with on-chip segmented LCD and USB, two peripherals that typically require external driver ICs, allowing true single-chip HMI designs.
Key features include integrated USB 2.0 full-speed with on-chip transceiver, segmented LCD driver supporting up to 480 segments, nanoWatt XLP sleep currents in the sub-uA class, an internal 64 MHz oscillator providing 16 MIPS, 32 KB self-programmable Flash, 4 KB SRAM, and multiple communication peripherals (UART, SPI, I2C). These features make the part suitable for low-power HMI products that must display variable alpha-numeric content while occasionally transferring data over USB.
The PIC18F95J94 architecture is a modified Harvard 8-bit core with a 16-bit instruction word, a hardware multiplier, and an interrupt controller supporting prioritized vectored interrupts. The 64 MHz internal oscillator eliminates external crystals in many applications, simplifying PCB layout. Programmable pin remapping and Peripheral Pin Select (PPS) provide flexibility for mixed-signal designs where pins must be re-routed between board revisions.
Typical applications include USB-connected blood-pressure monitors and glucose meters with LCD readouts, handheld industrial measurement tools with segmented displays, USB keyboards with integrated LCD status panels, electronic point-of-sale terminals with LCD, and battery-powered smart thermostats. The combination of USB, large-segment LCD, and XLP sleep currents specifically targets medical and portable-instrument markets.
When designing with this MCU, allocate PCB area for the segmented LCD glass and provide bulk capacitance near the USB VBUS pin. The XLP sleep modes depend on correct configuration of the RTCC and watchdog peripherals - leaving these unconfigured can defeat low-power goals by several orders of magnitude. A USB-IF-compliant 90 ohm differential pair on D+/D- is required for full-speed certification.
This page synthesizes distributor pricing, drop-in family-member alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC18F95J94-I/PF — 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/PF (cùng hình factor và footprint) — khác nhau ở Package, LCD Driver, ADC, Core Architecture, Operating Temperature.
PIC18F85J94-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F65J94-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F67J93-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F97J94-I/PF
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F87J72-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F95J94-I/PF Tỷ lệ tối đa & tính chất điện
| Core | PIC18 8-bit |
| Program Memory (Flash) | 32 KB (16K x 16) |
| Data Memory (SRAM) | 4 KB |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| Operating Voltage | 3.0 V to 3.6 V |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Hộp | 100-pin TQFP (PF) |
| Số chân | 100 |
| USB | USB 2.0 Full-Speed with on-chip transceiver |
| LCD Driver | Segmented LCD, up to 480 segments |
| Low-Power Technology | nanoWatt XLP |
| Communication Peripherals | UART, SPI, I2C |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18F95J94-I/PF
| Chân 1 | RB3 — PORTB I/O pin 3 |
| Chân 2 | RB4 — PORTB I/O pin 4 |
| Chân 3 | RB5 — PORTB I/O pin 5 / programming |
| Chân 4 | RB6 — PORTB I/O pin 6 / ICSPCLK |
| Chân 5 | RB7 — PORTB I/O pin 7 / ICSPDAT |
| Chân 6 | VSS — Ground reference |
| Chân 7 | VDD — Positive supply |
| Chân 8 | RC0 — PORTC I/O pin 0 |
| Chân 9 | RC1 — PORTC I/O pin 1 / SOSCO |
| Chân 10 | RC2 — PORTC I/O pin 2 / SOSCI |
| Chân 11 | RC3 — PORTC I/O pin 3 / SCL1 |
| Chân 12 | RC4 — PORTC I/O pin 4 / SDA1 |
| Chân 13 | RC5 — PORTC I/O pin 5 |
| Chân 14 | RC6 — PORTC I/O pin 6 / TX1 |
| Chân 15 | RC7 — PORTC I/O pin 7 / RX1 |
| Chân 16 | RD0 — PORTD I/O pin 0 |
| Chân 17 | RD1 — PORTD I/O pin 1 |
| Chân 18 | RD2 — PORTD I/O pin 2 |
| Chân 19 | RD3 — PORTD I/O pin 3 |
| Chân 20 | RD4 — PORTD I/O pin 4 |
| Chân 21 | RD5 — PORTD I/O pin 5 |
| Chân 22 | RD6 — PORTD I/O pin 6 |
| Chân 23 | RD7 — PORTD I/O pin 7 |
| Chân 24 | VSS — Ground reference |
| Chân 25 | VDD — Positive supply |
| Chân 26 | RE0 — PORTE I/O pin 0 |
| Chân 27 | RE1 — PORTE I/O pin 1 |
| Chân 28 | RE2 — PORTE I/O pin 2 |
| Chân 29 | RE3 — PORTE I/O pin 3 |
| Chân 30 | RE4 — PORTE I/O pin 4 |
| Chân 31 | RE5 — PORTE I/O pin 5 |
| Chân 32 | RE6 — PORTE I/O pin 6 |
| Chân 33 | RE7 — PORTE I/O pin 7 |
| Chân 34 | VSS — Ground reference |
| Chân 35 | VDD — Positive supply |
| Chân 36 | RF0 — PORTF I/O pin 0 / LCDSEG0 |
| Chân 37 | RF1 — PORTF I/O / LCDSEG1 |
| Chân 38 | RF2 — PORTF I/O / LCDSEG2 |
| Chân 39 | RF3 — PORTF I/O / LCDSEG3 |
| Chân 40 | RF4 — PORTF I/O / LCDSEG4 |
| Chân 41 | RF5 — PORTF I/O / LCDSEG5 |
| Chân 42 | RF6 — PORTF I/O / LCDSEG6 |
| Chân 43 | RF7 — PORTF I/O / LCDSEG7 |
| Chân 44 | VSS — Ground reference |
| Chân 45 | VDD — Positive supply |
| Chân 46 | RG0 — PORTG I/O pin 0 |
| Chân 47 | RG1 — PORTG I/O pin 1 |
| Chân 48 | RG2 — PORTG I/O pin 2 |
| Chân 49 | RG3 — PORTG I/O pin 3 |
| Chân 50 | RG4 — PORTG I/O pin 4 |
| Chân 51 | RG5 — PORTG I/O pin 5 |
| Chân 52 | RG6 — PORTG I/O pin 6 |
| Chân 53 | RG7 — PORTG I/O pin 7 |
| Chân 54 | VSS — Ground reference |
| Chân 55 | VDD — Positive supply |
| Chân 56 | RH0 — PORTH I/O pin 0 / LCDSEG8 |
| Chân 57 | RH1 — PORTH I/O pin 1 / LCDSEG9 |
| Chân 58 | RH2 — PORTH I/O pin 2 / LCDSEG10 |
| Chân 59 | RH3 — PORTH I/O pin 3 / LCDSEG11 |
| Chân 60 | RH4 — PORTH I/O pin 4 / LCDSEG12 |
| Chân 61 | RH5 — PORTH I/O pin 5 / LCDSEG13 |
| Chân 62 | RH6 — PORTH I/O pin 6 / LCDSEG14 |
| Chân 63 | RH7 — PORTH I/O pin 7 / LCDSEG15 |
| Chân 64 | VSS — Ground reference |
| Chân 65 | VDD — Positive supply |
| Chân 66 | RJ0 — PORTJ I/O pin 0 / LCDSEG16 |
| Chân 67 | RJ1 — PORTJ I/O pin 1 / LCDSEG17 |
| Chân 68 | RJ2 — PORTJ I/O pin 2 / LCDSEG18 |
| Chân 69 | RJ3 — PORTJ I/O pin 3 / LCDSEG19 |
| Chân 70 | RJ4 — PORTJ I/O pin 4 / LCDSEG20 |
| Chân 71 | RJ5 — PORTJ I/O pin 5 / LCDSEG21 |
| Chân 72 | RJ6 — PORTJ I/O pin 6 / LCDSEG22 |
| Chân 73 | RJ7 — PORTJ I/O pin 7 / LCDSEG23 |
| Chân 74 | VSS — Ground reference |
| Chân 75 | VDD — Positive supply |
| Chân 76 | RA0 — PORTA I/O pin 0 / LCDBIAS0 |
| Chân 77 | RA1 — PORTA I/O pin 1 / LCDBIAS1 |
| Chân 78 | RA2 — PORTA I/O pin 2 / LCDBIAS2 |
| Chân 79 | RA3 — PORTA I/O pin 3 / LCDBIAS3 |
| Chân 80 | RA4 — PORTA I/O pin 4 |
| Chân 81 | RA5 — PORTA I/O pin 5 |
| Chân 82 | RA6 — PORTA I/O pin 6 |
| Chân 83 | RA7 — PORTA I/O pin 7 |
| Chân 84 | VSS — Ground reference |
| Chân 85 | VDD — Positive supply |
| Chân 86 | RB0 — PORTB I/O pin 0 / INT0 |
| Chân 87 | RB1 — PORTB I/O pin 1 / INT1 |
| Chân 88 | RB2 — PORTB I/O pin 2 |
| Chân 89 | D+ — USB data plus |
| Chân 90 | D- — USB data minus |
| Chân 91 | VBUS — USB bus voltage detect |
| Chân 92 | VUSB3V — USB 3.3V regulator output |
| Chân 93 | OSC1 — Crystal oscillator input |
| Chân 94 | OSC2 — Crystal oscillator output |
| Chân 95 | MCLR — Master clear / reset input |
| Chân 96 | VSS — Ground reference |
| Chân 97 | VDD — Positive supply |
| Chân 98 | NC — Not connected (per datasheet) |
| Chân 99 | NC — Not connected (per datasheet) |
| Chân 100 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC18F95J94-I/PF phù hợp cho 6 Áp dụngs: USB Medical Monitor with LCD, Industrial Handheld Measurement Tool, USB Keyboard with LCD Status Display, Electronic Point-of-Sale Terminal, Battery-Powered Smart Thermostat, USB-Connected Data Logger.
USB Medical Monitor with LCD
The PIC18F95J94-I/PF's integrated USB 2.0 full-speed transceiver and segmented LCD driver (up to 480 segments) make it ideal for medical monitoring devices that must display readings while transferring data to a host PC. Its nanoWatt XLP sleep currents extend battery life in portable applications such as blood-pressure monitors and pulse oximeters, where the 32 KB Flash holds device firmware and the 4 KB SRAM buffers measurement data. The 100-pin TQFP provides sufficient I/O for sensor interfaces, button inputs, and the LCD glass connection.
Được đề xuất
Industrial Handheld Measurement Tool
For handheld industrial meters like multimeters and clamp meters, the PIC18F95J94-I/PF provides the segmented LCD driver for numeric readouts, the USB interface for data logging to a PC, and the XLP low-power modes that extend battery life across field-service shifts. The 64 MHz internal oscillator at 16 MIPS ensures responsive user-interface latency without external crystals. The wide -40C to +85C industrial temperature grade supports factory-floor and outdoor deployment.
Được đề xuất
USB Keyboard with LCD Status Display
USB keyboards benefit from the PIC18F95J94-I/PF's on-chip USB transceiver (eliminating an external PHY) and segmented LCD for displaying caps-lock, num-lock, or custom function indicators. The 100-pin TQFP provides ample I/O for key matrix scanning while the LCD driver handles the display without additional ICs. XLP sleep modes reduce standby current when the keyboard is idle, a key requirement for wireless or backlit USB keyboards.
Được đề xuất
Electronic Point-of-Sale Terminal
POS terminals require USB device connectivity for transaction terminals, segmented LCD for amount display and customer prompts, and reliable operation across temperature ranges - all of which the PIC18F95J94-I/PF provides in a single chip. The 32 KB Flash holds the terminal application, while 4 KB SRAM handles transaction buffers. The TQFP-100 package supports the LCD glass connection, keypad matrix, magnetic-stripe or smart-card interface, and USB device port without external peripherals.
Được đề xuất
Battery-Powered Smart Thermostat
Battery or energy-harvesting powered thermostats benefit from the PIC18F95J94-I/PF's nanoWatt XLP technology with sub-microampere sleep currents that extend operational life, while its segmented LCD driver provides the temperature and mode readouts on the wall-mounted display. The on-chip USB enables firmware updates and configuration via a host PC. The 16 MIPS throughput handles sensor sampling, control loop calculations, and UI updates without external components.
Được đề xuất
USB-Connected Data Logger
Portable data loggers for environmental, agricultural, or transportation monitoring leverage the PIC18F95J94-I/PF's USB for periodic data offload and its segmented LCD for local status indication. The 32 KB Flash holds the firmware and circular log buffer, while 4 KB SRAM can be supplemented by external EEPROM or serial Flash for larger recordings. XLP sleep modes minimize quiescent drain between measurement intervals.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F95J94-I/PF — 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 | PIC18F85J94-I/PT | PIC18F65J94-I/PT | PIC18F67J93-I/PT | PIC18F97J94-I/PF | PIC18F87J72-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-100 (PF) | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| USB Peripheral | Yes (USB 2.0 FS on-chip) | Yes (USB 2.0 FS on-chip) | Yes (USB 2.0 FS on-chip) | Yes | Yes (USB 2.0 FS on-chip) | No (Ethernet instead) |
| Segmented LCD | Up to 480 segments | Up to 480 segments | Up to 480 segments | Yes | Up to 480 segments | No |
| nanoWatt XLP | Yes | Yes | Yes | Yes | Yes | Yes |
| Maximum Speed | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 48 MHz / 12 MIPS |
| Operating Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
Bảo phân biệt quan trọng
- Lowest-cost USB + LCD + XLP combination in PIC18F family at 32 KB Flash (vsPIC18F85J94-I/PT)
- On-chip USB 2.0 full-speed transceiver eliminates external PHY (vsPIC18F87J72-I/PT)
- Segmented LCD driver supports up to 480 segments (vsPIC18F4520-I/PT)
Ghi chú thiết kế
Place 100 nF decoupling capacitors as close as possible to every VDD pin (pins 7, 25, 35, 45, 55, 65, 75, 85, 97) and route VSS pins to a solid ground plane. The USB D+/D- differential pair requires 90 ohm impedance with matched length; route to the ESD protection IC (such as USBLC6-2SC6) within 5 mm of the USB receptacle to meet USB-IF compliance. The 100-pin TQFP land geometry typically uses 0.5 mm pitch pads requiring fine-pitch PCB capability.
Configure the nanoWatt XLP sleep mode explicitly via the OSCCON, WDTCON, and RTCCON registers before entering Sleep - leaving the system clock or watchdog running can increase sleep current by 10x to 100x, defeating the low-power advantage. For USB suspended states, the firmware must enter the appropriate USB suspend mode and disable the on-chip USB 3.3 V regulator when VBUS is removed to comply with USB-IF suspend current limits (2.5 mA maximum).
Do not omit the MCLR pull-up resistor on pin 95 - the device will not start reliably without it, especially in noisy industrial settings. The internal 64 MHz oscillator requires the OSCTUNE and OSCCON configuration sequence documented in the datasheet; an incorrect startup sequence can cause the PLL to fail to lock. The ICD/ICSP programming pins (RB6/RB7) must be accessible via test points or header to allow field firmware updates without desoldering the TQFP package.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial -40C to +85C temperature grade; not AEC-Q100 qualified (choose specific automotive-grade parts for vehicle applications).
