PIC18F66J65-I/PT Microchip Integrated Circuit (Quad Flat Packages) In Stock
Microchip PIC18F66J65-I/PT is an 8-bit microcontroller featuring 96 KB Flash, 3808 bytes RAM, and integrated Ethernet controller in a TQFP-64 package. It supports a 20-bit address bus, integrated ADC, and operates down to 2 V at 4 MHz for low-power designs. Suited for networked embedded applications including industrial control and building automation.
- Manufacturer
- Microchip
- Package
- Quad Flat Packages
- Pin Count
- 64
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F66J65-I/PT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.8100(MOQ 5)
- 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 CPU with 96 KB Flash and 3808 bytes RAM
- Integrated 10/100 Ethernet controller for network connectivity
- 64-pin TQFP package with rich peripheral set
- Operates down to 2 V supply at 4 MHz for low-power applications
- Integrated multi-channel ADC for analog signal acquisition
- 20-bit address bus supporting extended memory addressing
Applications
The PIC18F66J65-I/PT is designed for networked embedded control applications including industrial automation, building management systems, and smart energy meters that require Ethernet connectivity alongside 8-bit processing. Its large Flash memory and low minimum supply voltage of 2 V make it equally attractive for data logging systems and battery-assisted remote monitoring nodes.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TQFP-64 |
| Factory Lead Time | 8Weeks |
| YTEOL | 9 |
| Has ADC | YES |
| Additional Feature | ALSO OPERATES AT 2V MINIMUM SUPPLY AT 4 MHZ |
| Address Bus Width | 20 |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC18 |
| Clock Frequency-Max | 41.6667MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| External Data Bus Width | 16 |
| 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 | 39 |
| Number of Serial I/Os | 2 |
| Number of Timers | 5 |
| 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) | 3808 |
| ROM (words) | 98304 |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Speed | 41.6667MHz |
| Supply Current-Max | 21.6mA |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 2.35V |
| Supply Voltage-Nom | 2.5V |
| 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
How much Flash and RAM does the PIC18F66J65-I/PT offer for firmware and data buffering?
The PIC18F66J65-I/PT provides 96 KB of Flash program memory and 3808 bytes of SRAM. This combination supports reasonably complex firmware stacks including lightweight TCP/IP libraries needed to drive its on-chip Ethernet controller in industrial or networked embedded applications.
Can PIC18F66J65-I/PT operate from a 2 V supply and what speed limitation applies at that voltage?
Yes. The PIC18F66J65-I/PT can run from a 2 V minimum supply, but the maximum clock frequency at 2 V is limited to 4 MHz. At the standard 3.3 V supply, full-speed operation is supported, making it flexible for both low-power battery-operated and mains-powered designs.
Which industrial communication interfaces are available on the PIC18F66J65-I/PT for field-device integration?
Beyond its integrated Ethernet controller, the PIC18F66J65-I/PT includes UART, SPI, and I2C interfaces accessible via the 64-pin TQFP footprint. These allow simultaneous connection to sensors, displays, and serial field buses, reducing the need for external interface ICs in multi-protocol industrial designs.
What is the factory lead time for PIC18F66J65-I/PT and how should procurement teams plan their orders?
Microchip's factory lead time for the PIC18F66J65-I/PT is 8 weeks. Procurement teams designing products with this MCU should build at least 8 to 12 weeks of buffer stock to avoid line stoppages, particularly given that it carries a YTEOL rating of 9 years, indicating continued active production.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 5+ | $7.2000 | $36.00 |
| 25+ | $6.0700 | $151.75 |
| 100+ | $5.5000 | $550.00 |
| 1000+ | $5.0600 | $5060.00 |
| 5000+ | $4.8100 | $24050.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”