PIC18F66J90-I/PT Microchip Integrated Circuit (Quad Flat Packages) In Stock
PIC18F66J90-I/PT is an 8-bit PIC18 microcontroller from Microchip with 64 KB Flash, 4 KB RAM, integrated LCD driver, and 48 MHz maximum clock in a TQFP-64 package. Supports down to 2 V at 8 MHz, available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat Packages
- Pin Count
- 64
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F66J90-I/PT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.2832(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 up to 48 MHz with nanoWatt XLP technology
- 64 KB Flash and 4 KB SRAM for firmware and data storage
- Integrated LCD segment driver eliminating external display controller
- Low-voltage operation from 2 V at 8 MHz for battery designs
- 10-bit ADC for analog sensor acquisition
- TQFP-64 package with rich peripheral set including USART, SPI, I2C
Applications
The PIC18F66J90-I/PT is purpose-built for portable metering, utility displays, and handheld instruments that combine LCD readout with embedded control in a single chip. Its integrated LCD driver directly controls segment glass displays without an external display IC, reducing BOM cost and PCB complexity. Low-voltage operation down to 2 V at 8 MHz extends battery runtime in utility meters, thermostats, and industrial front panels.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TQFP-64 |
| Factory Lead Time | 17Weeks |
| YTEOL | 8 |
| Has ADC | YES |
| Additional Feature | ITS ALSO OPERATES MINIMUM 2 V 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 | 4 |
| 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) | 3923 |
| ROM (words) | 65536 |
| ROM Programmability | FLASH |
| Speed | 48MHz |
| Supply Current-Max | 24.1mA |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 3.3V |
| Supply Voltage-Nom | 3.3V |
| 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 | 8542.31.00.15 |
| Country of Origin | Philippines, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What advantage does the integrated LCD driver of the PIC18F66J90 provide over using a discrete display controller?
The PIC18F66J90 includes an on-chip LCD segment driver capable of directly controlling multiplexed LCD glass panels without an external controller IC, saving at least one component and the I2C or SPI bus overhead associated with external LCD drivers. This integration reduces BOM cost and PCB routing complexity in metering and display applications running at up to 48 MHz.
At what minimum supply voltage does the PIC18F66J90 operate reliably and what clock speed is available at that voltage?
The PIC18F66J90 operates from a minimum supply voltage of 2 V while delivering up to 8 MHz clock speed, enabling use in two-cell alkaline or single-cell lithium battery designs. At the full 3.6 V supply, the full 48 MHz performance is available, giving the designer flexibility to trade between power consumption and processing speed.
How much Flash and RAM does the PIC18F66J90 provide and is it sufficient for a USB-free data-logging application?
The PIC18F66J90 provides 64 KB of Flash program memory and 4 KB of SRAM, which is ample for a data-logging firmware that includes a real-time clock driver, LCD display routines, and EEPROM emulation without requiring USB or external memory. For comparison, typical PIC18 LCD meter firmware occupies 20 KB to 40 KB of Flash, leaving room for future feature additions.
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 |
|---|---|---|
| 1+ | $4.8300 | $4.83 |
| 20+ | $3.6480 | $72.96 |
| 50+ | $3.4291 | $171.46 |
| 150+ | $3.2832 | $492.48 |
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.”