PIC18F66K90-I/MR - 8-Bit XLP MCU 64KB Flash LCD | Microchip
料号： PIC18F66K90-I/MR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.62 | $5.62 |
| 10 | $5.07 | $50.70 |
| 100 | $4.51 | $451.00 |
| 500 | $4.05 | $2,025.00 |
| 1,000 | $3.62 | $3,620.00 |
PIC18F66K90-I/MR 概述
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.
直接替换替代料： PIC18F66K90-I/MR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC18F66K90-I/MR （相同外形与封装尺寸） ——差异在于 Package, Core Architecture, ADC, Operating Temperature, LCD Driver.
快速对比工具——选择替代料号进行并排对比：
PIC18F65K90-I/MR
✅ 直接替换✓ 有现货
$3.02 / 个
查看数据手册 →PIC18F66K90-I/MRRSL
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC18F66K40-I/MR
✅ 直接替换✓ 有现货
$2.68 / 个
查看数据手册 →PIC18F66K22-I/MRRSL
✅ 直接替换✓ 有现货
$3.55 / 个
查看数据手册 →PIC18F87K90-I/MR
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F66J55-I/PT
✅ 直接替换✓ 有现货
$4.31 / 个
查看数据手册 →PIC18F66K90-I/MR 最大额定值与电气特性
| 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) |
| 工作温度 | -40 C to +85 C (Industrial) |
| 封装 | 64-VQFN (9x9 mm) with exposed pad |
| 安装类型 | Surface Mount |
| MSL 等级 | 3 |
| RoHS 状态 | Compliant |
PIC18F66K90-I/MR 引脚配置
| 引脚 1 | RB7 — PORTB bit 7 / KBI3 / programming |
| 引脚 2 | RB6 — PORTB bit 6 / KBI2 / programming clock |
| 引脚 3 | RB5 — PORTB bit 5 / KBI1 |
| 引脚 4 | RB4 — PORTB bit 4 / KBI0 |
| 引脚 5 | VSS — Ground |
| 引脚 6 | VDD — Positive supply |
| 引脚 7 | RA7 — PORTA bit 7 |
| 引脚 8 | RA6 — PORTA bit 6 |
| 引脚 9 | RA5 — PORTA bit 5 |
| 引脚 10 | RA4 — PORTA bit 4 |
| 引脚 11 | RC7 — PORTC bit 7 / RX |
| 引脚 12 | RC6 — PORTC bit 6 / TX |
| 引脚 13 | RC5 — PORTC bit 5 |
| 引脚 14 | RC4 — PORTC bit 4 |
| 引脚 15 | RC3 — PORTC bit 3 / SCL |
| 引脚 16 | RC2 — PORTC bit 2 / SDA |
| 引脚 17 | RC1 — PORTC bit 1 / CCP |
| 引脚 18 | RC0 — PORTC bit 0 |
| 引脚 19 | OSC1 — Crystal oscillator input |
| 引脚 20 | OSC2 — Crystal oscillator output |
| 引脚 21 | VDD — Positive supply (secondary) |
| 引脚 22 | VSS — Ground (secondary) |
| 引脚 23 | RD7 — PORTD bit 7 |
| 引脚 24 | RD6 — PORTD bit 6 |
| 引脚 25 | RD5 — PORTD bit 5 |
| 引脚 26 | RD4 — PORTD bit 4 |
| 引脚 27 | RD3 — PORTD bit 3 |
| 引脚 28 | RD2 — PORTD bit 2 |
| 引脚 29 | RD1 — PORTD bit 1 |
| 引脚 30 | RD0 — PORTD bit 0 |
| 引脚 31 | RE7 — PORTE bit 7 |
| 引脚 32 | RE6 — PORTE bit 6 |
| 引脚 33 | RE5 — PORTE bit 5 |
| 引脚 34 | RE4 — PORTE bit 4 |
| 引脚 35 | RE3 — PORTE bit 3 / COM3 |
| 引脚 36 | RE2 — PORTE bit 2 / COM2 |
| 引脚 37 | RE1 — PORTE bit 1 / COM1 |
| 引脚 38 | RE0 — PORTE bit 0 / COM0 |
| 引脚 39 | RF7 — PORTF bit 7 / SEG7 |
| 引脚 40 | RF6 — PORTF bit 6 / SEG6 |
| 引脚 41 | RF5 — PORTF bit 5 / SEG5 |
| 引脚 42 | RF4 — PORTF bit 4 / SEG4 |
| 引脚 43 | RF3 — PORTF bit 3 / SEG3 |
| 引脚 44 | RF2 — PORTF bit 2 / SEG2 |
| 引脚 45 | RF1 — PORTF bit 1 / SEG1 |
| 引脚 46 | RF0 — PORTF bit 0 / SEG0 |
| 引脚 47 | RG7 — PORTG bit 7 |
| 引脚 48 | RG6 — PORTG bit 6 |
| 引脚 49 | RG5 — PORTG bit 5 |
| 引脚 50 | RG4 — PORTG bit 4 |
| 引脚 51 | RG3 — PORTG bit 3 |
| 引脚 52 | RG2 — PORTG bit 2 |
| 引脚 53 | RG1 — PORTG bit 1 |
| 引脚 54 | RG0 — PORTG bit 0 |
| 引脚 55 | AVSS — Analog ground |
| 引脚 56 | AVDD — Analog positive supply |
| 引脚 57 | MCLR — Master clear / reset / programming voltage |
| 引脚 58 | RA3 — PORTA bit 3 |
| 引脚 59 | RA2 — PORTA bit 2 |
| 引脚 60 | RA1 — PORTA bit 1 |
| 引脚 61 | RA0 — PORTA bit 0 |
| 引脚 62 | VDD — Positive supply (tertiary) |
| 引脚 63 | VSS — Ground (tertiary) |
| 引脚 64 | RB3 — PORTB bit 3 / CCP |
典型应用
PIC18F66K90-I/MR 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： PIC18F66K90-I/MR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Integrated segment LCD driver eliminates external controller （对比 PIC18F66K22-I/MR)
- Higher Flash density for full-featured metering （对比 PIC18F65K90-I/MR)
- Touch sensing via CTMU without dedicated IC （对比 PIC18F66K40-I/MR)
设计说明
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.
合规信息
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.
