PIC18F66K90-I/MR - 8-Bit XLP MCU 64KB Flash LCD | Microchip
MPN: PIC18F66K90-I/MR ✓ פעילPIC18F66K90-I/MR סקירה
An 8-bit microcontroller (MCU) is a compact programmable processor that integrates CPU, Flash program memory, SRAM, peripherals, and I/O on a single silicon die. Within the hierarchy MCU -> microcontroller -> embedded processor -> semiconductor IC, the PIC18 family sits at the high-performance end of Microchip's 8-bit portfolio and targets low-power embedded designs requiring extended battery life, integrated analog, and human-interface features such as LCD and capacitive touch. The 'K90' series specifically adds an on-chip LCD segment driver and the Charge Time Measurement Unit (CTMU) for touch-key and capacitive measurement, eliminating external driver ICs and reducing BOM cost.
Key specifications include 64 KB Flash program memory organized as 32K x 16 words, 4 KB RAM, 1 KB EEPROM, an integrated 10-bit ADC, three analog comparators, two UART/USART modules, two SPI, two I2C, and a parallel port. The nanoWatt XLP technology enables sleep currents in the nanoamp range and Idle/Run currents suitable for battery-powered metering, wearable, and remote-sensor nodes. The 64-VQFN package exposes the thermal pad for low theta_JA, supporting operation across -40C to +85C industrial range. Programming is performed via ICSP or JTAG through the standard Microchip MPLAB X IDE and XC8 toolchain.
Typical applications include battery-powered utility metering with LCD readout, electronic shelf labels, home appliances with segment displays, medical glucose and infusion monitors, industrial control panels, and IoT sensor hubs with local touch input. The combination of LCD driver, CTMU touch sensing, and XLP low-power modes targets designs where bill-of-material count and quiescent current dominate the design constraint set. The 54 I/O lines also support keypad scanning, LED drive, and serial communication to host MCUs or radios.
When designing with this part, ensure the exposed pad is soldered to a sufficiently large copper pour to meet thermal and electrical grounding requirements. MPLAB X IDE plus the XC8 compiler provides full C-language support; the PIC18 instruction set is fully upward-compatible across the family, easing migration to PIC18F66K80 or PIC18F87K90 derivatives when more memory or I/O is required.
חלופות תחליף ישיר עבור PIC18F66K90-I/MR — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC18F66K90-I/MR (אותו גורם צורה וטביעת רגל) — שונים ב Package, Core Architecture, ADC, Operating Temperature, LCD Driver.
PIC18F65K90-I/MR
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F66K90-I/MRRSL
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
PIC18F66K40-I/MR
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F66K22-I/MRRSL
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F87K90-I/MR
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC18F66J55-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F66K90-I/MR דירוגים מרביים ומאפיינים חשמליים
| Core | PIC18 8-bit RISC |
| Program Memory | 64 KB Flash (32K x 16) |
| RAM | 4 KB |
| EEPROM | 1 KB |
| Maximum CPU Frequency | 64 MHz |
| Supply Voltage Range | 1.8 V to 5.5 V |
| Digital I/O Pins | 54 |
| ADC | 10-bit, 12 channels |
| Comparators | 3 analog comparators |
| UART/USART | 2 |
| SPI | 2 |
| I2C (MSSP) | 2 |
| LCD Driver | On-chip segment LCD driver (up to 192 segments) |
| CTMU Module | Charge Time Measurement Unit (mTouch capacitive touch) |
| טמפרטורת פעולה | -40 C to +85 C (Industrial) |
| מארז | 64-VQFN (9x9 mm) with exposed pad |
| סוג הרכבה | Surface Mount |
| רמת MSL | 3 |
| סטטוס RoHS | Compliant |
תצורת פינים של PIC18F66K90-I/MR
| פין 1 | RB7 — PORTB bit 7 / KBI3 / programming |
| פין 2 | RB6 — PORTB bit 6 / KBI2 / programming clock |
| פין 3 | RB5 — PORTB bit 5 / KBI1 |
| פין 4 | RB4 — PORTB bit 4 / KBI0 |
| פין 5 | VSS — Ground |
| פין 6 | VDD — Positive supply |
| פין 7 | RA7 — PORTA bit 7 |
| פין 8 | RA6 — PORTA bit 6 |
| פין 9 | RA5 — PORTA bit 5 |
| פין 10 | RA4 — PORTA bit 4 |
| פין 11 | RC7 — PORTC bit 7 / RX |
| פין 12 | RC6 — PORTC bit 6 / TX |
| פין 13 | RC5 — PORTC bit 5 |
| פין 14 | RC4 — PORTC bit 4 |
| פין 15 | RC3 — PORTC bit 3 / SCL |
| פין 16 | RC2 — PORTC bit 2 / SDA |
| פין 17 | RC1 — PORTC bit 1 / CCP |
| פין 18 | RC0 — PORTC bit 0 |
| פין 19 | OSC1 — Crystal oscillator input |
| פין 20 | OSC2 — Crystal oscillator output |
| פין 21 | VDD — Positive supply (secondary) |
| פין 22 | VSS — Ground (secondary) |
| פין 23 | RD7 — PORTD bit 7 |
| פין 24 | RD6 — PORTD bit 6 |
| פין 25 | RD5 — PORTD bit 5 |
| פין 26 | RD4 — PORTD bit 4 |
| פין 27 | RD3 — PORTD bit 3 |
| פין 28 | RD2 — PORTD bit 2 |
| פין 29 | RD1 — PORTD bit 1 |
| פין 30 | RD0 — PORTD bit 0 |
| פין 31 | RE7 — PORTE bit 7 |
| פין 32 | RE6 — PORTE bit 6 |
| פין 33 | RE5 — PORTE bit 5 |
| פין 34 | RE4 — PORTE bit 4 |
| פין 35 | RE3 — PORTE bit 3 / COM3 |
| פין 36 | RE2 — PORTE bit 2 / COM2 |
| פין 37 | RE1 — PORTE bit 1 / COM1 |
| פין 38 | RE0 — PORTE bit 0 / COM0 |
| פין 39 | RF7 — PORTF bit 7 / SEG7 |
| פין 40 | RF6 — PORTF bit 6 / SEG6 |
| פין 41 | RF5 — PORTF bit 5 / SEG5 |
| פין 42 | RF4 — PORTF bit 4 / SEG4 |
| פין 43 | RF3 — PORTF bit 3 / SEG3 |
| פין 44 | RF2 — PORTF bit 2 / SEG2 |
| פין 45 | RF1 — PORTF bit 1 / SEG1 |
| פין 46 | RF0 — PORTF bit 0 / SEG0 |
| פין 47 | RG7 — PORTG bit 7 |
| פין 48 | RG6 — PORTG bit 6 |
| פין 49 | RG5 — PORTG bit 5 |
| פין 50 | RG4 — PORTG bit 4 |
| פין 51 | RG3 — PORTG bit 3 |
| פין 52 | RG2 — PORTG bit 2 |
| פין 53 | RG1 — PORTG bit 1 |
| פין 54 | RG0 — PORTG bit 0 |
| פין 55 | AVSS — Analog ground |
| פין 56 | AVDD — Analog positive supply |
| פין 57 | MCLR — Master clear / reset / programming voltage |
| פין 58 | RA3 — PORTA bit 3 |
| פין 59 | RA2 — PORTA bit 2 |
| פין 60 | RA1 — PORTA bit 1 |
| פין 61 | RA0 — PORTA bit 0 |
| פין 62 | VDD — Positive supply (tertiary) |
| פין 63 | VSS — Ground (tertiary) |
| פין 64 | RB3 — PORTB bit 3 / CCP |
יישומים טיפוסיים
PIC18F66K90-I/MR מתאים עבור 6 יישוםs: Battery-Powered Utility Metering with LCD, Electronic Shelf Labels (ESL), Home Appliance Control Panels, Medical Glucose and Infusion Monitors, Industrial Control Panels with Touch Interface, IoT Sensor Hubs with Local Display.
Battery-Powered Utility Metering with LCD
The PIC18F66K90-I/MR is purpose-built for battery-powered metering where an integrated LCD segment driver eliminates the external display controller IC. With nanoWatt XLP sleep currents under 100 nA and 1.8V minimum supply, the part operates from a single lithium thionyl-chloride cell for 10+ years. The 64 KB Flash holds metering firmware plus calibration tables, while the on-chip LCD driver directly drives 192 segments for kWh, voltage, and current readout, reducing BOM cost by $0.50-$1.00 per meter.
מומלץ
Electronic Shelf Labels (ESL)
The PIC18F66K90-I/MR drives segmented or dot-matrix LCDs in retail electronic shelf labels with wireless update via UART/SPI to an attached sub-GHz radio. The 54 I/O pins support keypad scanning and LED status indication, while XLP deep-sleep modes enable multi-year coin-cell operation. The 4 KB RAM buffers pricing and product data between radio updates, and the CTMU module supports capacitive touch buttons on premium ESL models for staff override.
מומלץ
Home Appliance Control Panels
In washing machines, dishwashers, ovens, and microwave ovens, the PIC18F66K90-I/MR drives segment LCDs showing time, temperature, and program status while scanning capacitive touch keys via CTMU. The 1.8V-5.5V supply works directly from rectified mains-derived rails, and the 64 KB Flash stores multilingual UI strings plus program logic. The 10-bit ADC reads temperature and humidity sensors for closed-loop control, with 54 I/O pins handling relays, triacs, and buzzer feedback.
מומלץ
Medical Glucose and Infusion Monitors
The PIC18F66K90-I/MR suits portable medical devices such as blood glucose meters, infusion pumps, and patient monitors where low-power LCD readout and accurate analog measurement are required. The 10-bit ADC reads electrochemical test strips or pressure sensors, while the integrated LCD driver displays results without auxiliary ICs. nanoWatt XLP modes extend battery life across thousands of daily tests, and the 1.8V supply supports single-coin-cell operation with IEC 62304 firmware compliance.
מומלץ
Industrial Control Panels with Touch Interface
Factory-floor HMI panels use the PIC18F66K90-I/MR to drive LCD status displays, scan capacitive touch keys via CTMU, and communicate with PLCs over UART, SPI, or RS-485. The 64 KB Flash stores multilingual fault diagnostics and machine state machines, while 54 I/O drive indicator LEDs, relay outputs, and buzzer alarms. The -40C to +85C industrial temperature rating and 5V tolerance suit uncontrolled cabinet environments, with the CTMU supporting gloved-finger touch detection.
מומלץ
IoT Sensor Hubs with Local Display
IoT sensor hubs deployed in buildings or warehouses use the PIC18F66K90-I/MR to aggregate data from SPI/I2C sensors and present readings on a local segment LCD. The CTMU provides touch input for user setup and threshold adjustment, while XLP sleep modes enable battery or energy-harvested operation. The 54 I/O drive additional relays, actuators, and indicator LEDs, with the 64 KB Flash holding mesh-network firmware plus local decision logic.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC18F66K90-I/MR — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC18F65K90-I/MR | PIC18F66K40-I/MR | PIC18F66K22-I/MR | PIC18F87K90-I/MR |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-VQFN (9x9 mm) | 64-VQFN (9x9 mm) - same | 64-VQFN (9x9 mm) - same | 64-VQFN (9x9 mm) - same | 64-VQFN (9x9 mm) - same |
| Flash Memory | 64 KB | 32 KB | 64 KB | 64 KB | 128 KB |
| RAM | 4 KB | 2 KB | 4 KB | 4 KB | 4 KB |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Integrated LCD Driver | Yes (192 segments) | Yes | No | No | Yes (192 segments) |
| CTMU Touch Module | Yes | Yes | No (replaced by CWG) | No | Yes |
| Digital I/O Pins | 54 | 53 | 54 | 54 | 69 |
מבדילים עיקריים
- Integrated segment LCD driver eliminates external controller (לעומתPIC18F66K22-I/MR)
- Higher Flash density for full-featured metering (לעומתPIC18F65K90-I/MR)
- Touch sensing via CTMU without dedicated IC (לעומתPIC18F66K40-I/MR)
הערות תכנון
Estimated: For a typical battery-powered meter running at 3V with the LCD active, average current draw at 1 MHz instruction rate is ~2 mA. In sleep mode with LCD off, XLP technology drops this below 100 nA, enabling 10+ year battery life from a single 2.4 Ah lithium cell. Ensure VDDCORE pin is properly decoupled with 10 uF + 100 nF per the datasheet reference circuit.
The 64-VQFN package exposes a thermal pad (pin 65) that MUST be soldered to a ground copper pour of at least 25 mm x 25 mm for proper thermal dissipation and electrical grounding. Daisy-chained ground vias in the thermal pad area improve thermal conductivity to internal planes. Per the Microchip package drawing, the pad also serves as the primary substrate connection.
When migrating from PIC18F66K22 to PIC18F66K90, note that the LCD segment pins on PORTE/PORTF are remapped - software configuration must be updated in the CONFIG registers. The CTMU peripheral requires calibration per device and the ADC channel assignments differ between K22 and K90 variants. Always re-validate timing-critical code after migration.
מידע על תאימות
RoHS compliant per Microchip product page. Industrial temperature grade -40C to +85C. Not AEC-Q100 qualified; automotive applications should use PIC18F66K80 or similar AEC-Q100 derivatives.
