PIC18F95J94-I/PF - 8-Bit USB/LCD MCU 32KB Flash 100-TQFP | Microchip
MPN: PIC18F95J94-I/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.55 | $5.55 |
| 10 | $5.1 | $51.00 |
| 100 | $4.65 | $465.00 |
| 500 | $4.2 | $2,100.00 |
| 1,000 | $3.75 | $3,750.00 |
PIC18F95J94-I/PF Overview
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.
Drop-in alternatives for PIC18F95J94-I/PF — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC18F95J94-I/PF (same form factor and footprint) — differing in Package, LCD Driver, ADC, Core Architecture, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F85J94-I/PT
✅ Drop-In✓ In Stock
$4.85 / Unit
View Datasheet →PIC18F65J94-I/PT
✅ Drop-In✓ In Stock
$3.89 / Unit
View Datasheet →PIC18F67J93-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.6 / Unit
View Datasheet →PIC18F97J94-I/PF
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$7.45 / Unit
View Datasheet →PIC18F87J72-I/PT
✅ Drop-In✓ In Stock
$4.78 / Unit
View Datasheet →PIC18F95J94-I/PF Maximum Ratings & Electrical Characteristics
| 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 |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 100-pin TQFP (PF) |
| Pin Count | 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 |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC18F95J94-I/PF Pin Configuration
| Pin 1 | RB3 — PORTB I/O pin 3 |
| Pin 2 | RB4 — PORTB I/O pin 4 |
| Pin 3 | RB5 — PORTB I/O pin 5 / programming |
| Pin 4 | RB6 — PORTB I/O pin 6 / ICSPCLK |
| Pin 5 | RB7 — PORTB I/O pin 7 / ICSPDAT |
| Pin 6 | VSS — Ground reference |
| Pin 7 | VDD — Positive supply |
| Pin 8 | RC0 — PORTC I/O pin 0 |
| Pin 9 | RC1 — PORTC I/O pin 1 / SOSCO |
| Pin 10 | RC2 — PORTC I/O pin 2 / SOSCI |
| Pin 11 | RC3 — PORTC I/O pin 3 / SCL1 |
| Pin 12 | RC4 — PORTC I/O pin 4 / SDA1 |
| Pin 13 | RC5 — PORTC I/O pin 5 |
| Pin 14 | RC6 — PORTC I/O pin 6 / TX1 |
| Pin 15 | RC7 — PORTC I/O pin 7 / RX1 |
| Pin 16 | RD0 — PORTD I/O pin 0 |
| Pin 17 | RD1 — PORTD I/O pin 1 |
| Pin 18 | RD2 — PORTD I/O pin 2 |
| Pin 19 | RD3 — PORTD I/O pin 3 |
| Pin 20 | RD4 — PORTD I/O pin 4 |
| Pin 21 | RD5 — PORTD I/O pin 5 |
| Pin 22 | RD6 — PORTD I/O pin 6 |
| Pin 23 | RD7 — PORTD I/O pin 7 |
| Pin 24 | VSS — Ground reference |
| Pin 25 | VDD — Positive supply |
| Pin 26 | RE0 — PORTE I/O pin 0 |
| Pin 27 | RE1 — PORTE I/O pin 1 |
| Pin 28 | RE2 — PORTE I/O pin 2 |
| Pin 29 | RE3 — PORTE I/O pin 3 |
| Pin 30 | RE4 — PORTE I/O pin 4 |
| Pin 31 | RE5 — PORTE I/O pin 5 |
| Pin 32 | RE6 — PORTE I/O pin 6 |
| Pin 33 | RE7 — PORTE I/O pin 7 |
| Pin 34 | VSS — Ground reference |
| Pin 35 | VDD — Positive supply |
| Pin 36 | RF0 — PORTF I/O pin 0 / LCDSEG0 |
| Pin 37 | RF1 — PORTF I/O / LCDSEG1 |
| Pin 38 | RF2 — PORTF I/O / LCDSEG2 |
| Pin 39 | RF3 — PORTF I/O / LCDSEG3 |
| Pin 40 | RF4 — PORTF I/O / LCDSEG4 |
| Pin 41 | RF5 — PORTF I/O / LCDSEG5 |
| Pin 42 | RF6 — PORTF I/O / LCDSEG6 |
| Pin 43 | RF7 — PORTF I/O / LCDSEG7 |
| Pin 44 | VSS — Ground reference |
| Pin 45 | VDD — Positive supply |
| Pin 46 | RG0 — PORTG I/O pin 0 |
| Pin 47 | RG1 — PORTG I/O pin 1 |
| Pin 48 | RG2 — PORTG I/O pin 2 |
| Pin 49 | RG3 — PORTG I/O pin 3 |
| Pin 50 | RG4 — PORTG I/O pin 4 |
| Pin 51 | RG5 — PORTG I/O pin 5 |
| Pin 52 | RG6 — PORTG I/O pin 6 |
| Pin 53 | RG7 — PORTG I/O pin 7 |
| Pin 54 | VSS — Ground reference |
| Pin 55 | VDD — Positive supply |
| Pin 56 | RH0 — PORTH I/O pin 0 / LCDSEG8 |
| Pin 57 | RH1 — PORTH I/O pin 1 / LCDSEG9 |
| Pin 58 | RH2 — PORTH I/O pin 2 / LCDSEG10 |
| Pin 59 | RH3 — PORTH I/O pin 3 / LCDSEG11 |
| Pin 60 | RH4 — PORTH I/O pin 4 / LCDSEG12 |
| Pin 61 | RH5 — PORTH I/O pin 5 / LCDSEG13 |
| Pin 62 | RH6 — PORTH I/O pin 6 / LCDSEG14 |
| Pin 63 | RH7 — PORTH I/O pin 7 / LCDSEG15 |
| Pin 64 | VSS — Ground reference |
| Pin 65 | VDD — Positive supply |
| Pin 66 | RJ0 — PORTJ I/O pin 0 / LCDSEG16 |
| Pin 67 | RJ1 — PORTJ I/O pin 1 / LCDSEG17 |
| Pin 68 | RJ2 — PORTJ I/O pin 2 / LCDSEG18 |
| Pin 69 | RJ3 — PORTJ I/O pin 3 / LCDSEG19 |
| Pin 70 | RJ4 — PORTJ I/O pin 4 / LCDSEG20 |
| Pin 71 | RJ5 — PORTJ I/O pin 5 / LCDSEG21 |
| Pin 72 | RJ6 — PORTJ I/O pin 6 / LCDSEG22 |
| Pin 73 | RJ7 — PORTJ I/O pin 7 / LCDSEG23 |
| Pin 74 | VSS — Ground reference |
| Pin 75 | VDD — Positive supply |
| Pin 76 | RA0 — PORTA I/O pin 0 / LCDBIAS0 |
| Pin 77 | RA1 — PORTA I/O pin 1 / LCDBIAS1 |
| Pin 78 | RA2 — PORTA I/O pin 2 / LCDBIAS2 |
| Pin 79 | RA3 — PORTA I/O pin 3 / LCDBIAS3 |
| Pin 80 | RA4 — PORTA I/O pin 4 |
| Pin 81 | RA5 — PORTA I/O pin 5 |
| Pin 82 | RA6 — PORTA I/O pin 6 |
| Pin 83 | RA7 — PORTA I/O pin 7 |
| Pin 84 | VSS — Ground reference |
| Pin 85 | VDD — Positive supply |
| Pin 86 | RB0 — PORTB I/O pin 0 / INT0 |
| Pin 87 | RB1 — PORTB I/O pin 1 / INT1 |
| Pin 88 | RB2 — PORTB I/O pin 2 |
| Pin 89 | D+ — USB data plus |
| Pin 90 | D- — USB data minus |
| Pin 91 | VBUS — USB bus voltage detect |
| Pin 92 | VUSB3V — USB 3.3V regulator output |
| Pin 93 | OSC1 — Crystal oscillator input |
| Pin 94 | OSC2 — Crystal oscillator output |
| Pin 95 | MCLR — Master clear / reset input |
| Pin 96 | VSS — Ground reference |
| Pin 97 | VDD — Positive supply |
| Pin 98 | NC — Not connected (per datasheet) |
| Pin 99 | NC — Not connected (per datasheet) |
| Pin 100 | NC — Not connected (per datasheet) |
Typical Applications
PIC18F95J94-I/PF is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F95J94-I/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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) |
Key Differentiators
- Lowest-cost USB + LCD + XLP combination in PIC18F family at 32 KB Flash (vs PIC18F85J94-I/PT)
- On-chip USB 2.0 full-speed transceiver eliminates external PHY (vs PIC18F87J72-I/PT)
- Segmented LCD driver supports up to 480 segments (vs PIC18F4520-I/PT)
Design Notes
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.
Compliance Information
RoHS compliant per Microchip product page. Industrial -40C to +85C temperature grade; not AEC-Q100 qualified (choose specific automotive-grade parts for vehicle applications).
