PIC18F66J55-I/PT Microchip Integrated Circuit (Quad Flat Packages) In Stock
The PIC18F66J55-I/PT is an 8-bit PIC18 microcontroller from Microchip with 96 KB Flash, 3904 bytes of RAM, 49 I/O pins, and a maximum CPU clock of 48 MHz, packaged in a 64-pin TQFP. It features full-speed USB 2.0 device support and operates down to 2 V at 8 MHz. Designed for USB-connected data acquisition, HID peripherals, and portable instrumentation.
- Manufacturer
- Microchip
- Package
- Quad Flat Packages
- Pin Count
- 64
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F66J55-I/PT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.8500(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit PIC18 core clocked up to 48 MHz with USB full-speed (12 Mbps) support
- 96 KB on-chip Flash program memory
- 3904 bytes of SRAM for runtime data buffers
- 49 available GPIO pins in a 64-pin TQFP package
- Integrated ADC for analog sensor acquisition
- Wide operating voltage: 2 V (at 8 MHz) to 3.3 V (at 48 MHz)
- RoHS-compliant, lead-free construction
Applications
The PIC18F66J55-I/PT is well-suited for USB-connected embedded applications such as HID keyboards and mice, USB data loggers, and laboratory instruments that require a full-speed 12 Mbps USB device interface alongside extensive I/O. Its 96 KB Flash and 49 GPIO pins provide sufficient resources for moderately complex firmware including USB CDC or HID class drivers, sensor polling, and display control within a single chip. The low minimum operating voltage of 2 V at 8 MHz also makes it usable in battery-powered portable instruments where energy efficiency is important.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TQFP-64 |
| Factory Lead Time | 7Weeks |
| YTEOL | 8 |
| Has ADC | YES |
| Additional Feature | ALSO OPERATES AT 2V MINIMUM SUPPLY AT 8 MHZ |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC18 |
| Clock Frequency-Max | 48MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | S-PQFP-G64 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 4 |
| Number of I/O Lines | 51 |
| Number of Serial I/Os | 2 |
| Number of Timers | 7 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TQFP64,.47SQ |
| Package Shape | SQUARE |
| Package Style | FLATPACK, THIN PROFILE, FINE PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 3904 |
| ROM (words) | 98304 |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Speed | 48MHz |
| Supply Current-Max | 24.1mA |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 2V |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Quad Flat Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | 3A991.A.2 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Philippines, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Does the PIC18F66J55-I/PT have an integrated USB interface, and what speed does it support?
Yes, the PIC18F66J55-I/PT incorporates a full-speed USB 2.0 device controller supporting 12 Mbps data rates, enabling it to implement HID, CDC, or mass-storage class USB devices without an external USB controller IC. This integration simplifies the BOM and board layout for USB-connected instruments, eliminating the need for a separate USB bridge chip and its associated firmware complexity.
What is the minimum supply voltage for the PIC18F66J55-I/PT and how does it affect clock speed?
The PIC18F66J55-I/PT can operate from as low as 2 V supply voltage, but at that voltage the maximum clock frequency is limited to 8 MHz. For full-speed USB operation and the maximum 48 MHz CPU clock, a 3.3 V supply is required. This makes the device suitable for battery-powered designs that run in low-power mode at 2 V and temporarily boost supply voltage for USB transfers.
How many I/O pins does the PIC18F66J55-I/PT provide, and what peripheral functions share these pins?
The PIC18F66J55-I/PT offers 49 general-purpose I/O pins in the 64-pin TQFP package. These pins are multiplexed with peripheral functions including UART, SPI, I2C, ADC inputs, PWM outputs, and timer captures. Having 49 I/O pins allows simultaneous connection to an LCD module, multiple SPI sensors, UART debug interface, and several discrete I/O signals without running out of GPIO in most embedded applications.
Is PIC18F66J55-I/PT appropriate for a compact USB data logger design, and what memory is available for sample buffers?
The PIC18F66J55-I/PT is a strong fit for compact USB data loggers, providing 96 KB of Flash for firmware and USB class driver code, plus 3904 bytes of SRAM for temporary sample buffers and USB endpoint buffers. At 48 MHz, it can process and transfer sensor data over the 12 Mbps USB link fast enough for audio-rate or moderate-speed industrial measurement applications, all within the 64-pin TQFP footprint measuring approximately 10 mm × 10 mm.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $5.3000 | $5.30 |
| 5+ | $5.0300 | $25.15 |
| 25+ | $4.7100 | $117.75 |
| 100+ | $4.3100 | $431.00 |
| 1000+ | $4.0400 | $4040.00 |
| 5000+ | $3.8500 | $19250.00 |
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