PIC18F4685-I/PT Microchip Integrated Circuit (Quad Flat Packages) In Stock
PIC18F4685-I/PT is an 8-bit PIC18 microcontroller with 96 KB Flash and a 40 MHz maximum clock frequency. It integrates a 10-bit ADC, CAN 2.0B interface, and multiple timers in a TQFP-44 package. Designed for industrial control, automotive accessories, and embedded communication applications.
- Manufacturer
- Microchip
- Package
- Quad Flat Packages
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F4685-I/PT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $10.4719(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 architecture operating at up to 40 MHz clock frequency
- 96 KB Flash program memory for large firmware with complex state machines
- Integrated CAN 2.0B controller for industrial and automotive network designs
- 10-bit ADC with multiple input channels for analog signal acquisition
- Multiple hardware timers and PWM channels for motor and power control
- TQFP-44 package with short 2-week factory lead time for rapid production ramp
Applications
PIC18F4685-I/PT is commonly deployed in CAN-based industrial automation networks, automotive body control modules, and embedded sensor nodes where an 8-bit core with 96 KB of on-chip Flash is sufficient. Its integrated CAN 2.0B module eliminates external CAN controller ICs, reducing BOM cost and board area in factory floor and vehicle-network applications. The device is also used in HVAC controllers, energy monitoring nodes, and consumer appliances that need reliable real-time I/O management.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TQFP-44 |
| Factory Lead Time | 2Weeks |
| YTEOL | 8 |
| Has ADC | YES |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC18 |
| Clock Frequency-Max | 40MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | S-PQFP-G44 |
| JESD-609 Code | e3 |
| Low Power Mode | NO |
| Number of External Interrupts | 3 |
| Number of I/O Lines | 44 |
| Number of Serial I/Os | 1 |
| Number of Timers | 4 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TQFP44,.39SQ,31 |
| Package Shape | SQUARE |
| Package Style | FLATPACK, THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 3328 |
| ROM (words) | 98304 |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Speed | 40MHz |
| Supply Current-Max | 44mA |
| Supply Voltage-Max | 5.5V |
| 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 | 0.8mm |
| Terminal Position | QUAD |
| 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 1 |
| ECCN | 3A991.A.2 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Philippines, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC18F4685-I/PT:
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 40MHz, CMOS, PQFP44
Frequently Asked Questions
How does PIC18F4685-I/PT's integrated CAN 2.0B module simplify automotive body-control module designs?
PIC18F4685-I/PT includes a full CAN 2.0B controller on-chip, eliminating the need for a separate stand-alone CAN controller IC. This reduces BOM cost, shrinks the PCB footprint, and simplifies firmware since the CAN peripheral is directly memory-mapped, enabling communication at up to 1 Mbit/s on a standard vehicle CAN bus.
Is 96 KB of Flash sufficient for CAN-based industrial firmware, and how does PIC18F4685-I/PT compare to smaller Flash variants?
96 KB Flash provides ample space for a CANopen or J1939 protocol stack plus application logic in an 8-bit MCU. By comparison, PIC18F4580 offers 32 KB Flash, making PIC18F4685 the preferred choice when firmware includes communication middleware, lookup tables, or over-the-air bootloader storage beyond 64 KB.
What ADC specification does PIC18F4685-I/PT offer for mixed-signal sensing in HVAC and energy monitoring designs?
The device integrates a 10-bit ADC with multiple input channels, providing sufficient resolution for temperature sensors, current transformers, and pressure transducers used in HVAC and energy monitoring. A 10-bit ADC yields 1,024 discrete levels, giving roughly 1°C resolution over a 0°C to 100°C NTC sensor span after calibration.
What is the expected procurement lead time and long-term availability outlook for PIC18F4685-I/PT?
Microchip lists a factory lead time of only 2 weeks for PIC18F4685-I/PT, which is notably short compared to many 8-bit MCUs with 6 to 12-week lead times. The YTEOL forecast of 8 years indicates the part will remain in active production for the foreseeable future, supporting designs with multi-year manufacturing commitments.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $10.4719 | $10.47 |
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