PIC18F65K90-E/PT - 32KB Flash LCD MCU 64-Pin TQFP | Microchip
料号： PIC18F65K90-E/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.2 | $7.20 |
| 10 | $6.48 | $64.80 |
| 100 | $5.76 | $576.00 |
| 500 | $5.15 | $2,575.00 |
| 1,000 | $4.61 | $4,610.00 |
PIC18F65K90-E/PT 概述
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path; the PIC18 line is Microchip's high-performance 8-bit family using a modified Harvard RISC architecture with a 16-bit instruction word. Within the power-management hierarchy, an MCU belongs to the broader category of embedded processors, alongside 16-bit MCUs, 32-bit MCUs, and DSPs; within Microchip's portfolio it sits below the PIC24/dsPIC33 (16-bit) and PIC32 (32-bit) families.
Key features of the PIC18F65K90-E/PT include 54 I/O pins, nanoWatt XLP extreme-low-power technology (deep sleep currents in the nA range), a Charge Time Measurement Unit (CTMU) for capacitive touch sensing, and up to 24 channels of capacitive touch support. The integrated LCD driver supports up to 192 segments, making it a single-chip solution for human-machine interface (HMI) panels. Peripheral options include multiple USART, SPI, I2C, 12-bit ADC with computation, and multiple PWM/capture/compare modules.
Architecturally, the part uses Microchip's enhanced PIC18 core with hardware multiplier, 31-level hardware stack, and configurable oscillator modes (internal 31 kHz LF, 8 % tolerance, plus HF PLL up to 64 MHz). The K-series silicon adds XLP power-saving peripherals such as RTCC, ultra-low-power wake, and deep-sleep retention of RAM.
Typical applications include battery-powered LCD meters, thermostats, white-goods control boards, industrial HMI keypads, and capacitive-touch user interfaces where a single MCU drives both the display and the touch matrix. The CTMU peripheral allows up to 24 touch buttons without external analog components.
When designing with this MCU, budget sufficient board area for the LCD bias resistors and segment capacitors; missing charge-pump capacitors is the most common cause of contrast failure. Also confirm your compiler tools (XC8) are at the latest version to ensure correct CTMU peripheral drivers.
This page synthesizes distributor pricing, same-family drop-in alternatives in the same 64-pin TQFP, and practical design notes not consolidated in the manufacturer datasheet.
直接替换替代料： PIC18F65K90-E/PT ——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： PIC18F65K90-E/PT （相同外形与封装尺寸） ——差异在于 Package, ADC, Core Architecture, Operating Temperature, Operating Voltage.
快速对比工具——选择替代料号进行并排对比：
PIC18F65K90-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F65K90-E/MR
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$4.6 / 个
查看数据手册 →PIC18F66K90-E/PT
✅ 直接替换✓ 有现货
$4.4 / 个
查看数据手册 →PIC18F67K90-E/PT
✅ 直接替换✓ 有现货
$3.55 / 个
查看数据手册 →PIC18F87K90-E/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F65K80T-I/PT
✅ 直接替换✓ 有现货
$3.33 / 个
查看数据手册 →PIC18F65K90-E/PT 最大额定值与电气特性
| Family | PIC18F87K90 |
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Program Memory (Flash) | 32 KB |
| RAM | 2 KB |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| Operating Voltage | 1.8 V to 5.5 V |
| I/O Pins | 54 |
| ADC | 12-bit, up to 16 channels |
| LCD Segments | Up to 192 segments |
| Touch Channels (CTMU) | Up to 24 |
| 封装 | TQFP-64 (10 x 10 x 1 mm) |
| 安装类型 | Surface Mount |
| 工作温度 | -40 °C to +125 °C (Extended, "E") |
| RoHS 状态 | Compliant |
PIC18F65K90-E/PT 引脚配置
| 引脚 1 | RC0 — Digital I/O / CTMU channel |
| 引脚 2 | RC1 — Digital I/O / CTMU channel |
| 引脚 3 | RC2 — Digital I/O / CTMU channel |
| 引脚 4 | RC3 — Digital I/O / SCL |
| 引脚 5 | RC4 — Digital I/O / SDA |
| 引脚 6 | RC5 — Digital I/O / SDO |
| 引脚 7 | RC6 — Digital I/O / TX1 |
| 引脚 8 | RC7 — Digital I/O / RX1 |
| 引脚 9 | SEG0 — LCD segment driver 0 |
| 引脚 10 | SEG1 — LCD segment driver 1 |
| 引脚 11 | SEG2 — LCD segment driver 2 |
| 引脚 12 | SEG3 — LCD segment driver 3 |
| 引脚 13 | SEG4 — LCD segment driver 4 |
| 引脚 14 | SEG5 — LCD segment driver 5 |
| 引脚 15 | SEG6 — LCD segment driver 6 |
| 引脚 16 | SEG7 — LCD segment driver 7 |
| 引脚 17 | VLCD1 — LCD charge pump output 1 |
| 引脚 18 | VLCD2 — LCD charge pump output 2 |
| 引脚 19 | VLCD3 — LCD charge pump output 3 |
| 引脚 20 | VDD — Positive supply |
| 引脚 21 | VSS — Ground |
| 引脚 22 | RB0 — Digital I/O / INT0 |
| 引脚 23 | RB1 — Digital I/O / INT1 |
| 引脚 24 | RB2 — Digital I/O / INT2 |
| 引脚 25 | RB3 — Digital I/O / INT3 |
| 引脚 26 | RB4 — Digital I/O / KBI0 |
| 引脚 27 | RB5 — Digital I/O / KBI1 |
| 引脚 28 | RB6 — Digital I/O / KBI2 / PGC |
| 引脚 29 | RB7 — Digital I/O / KBI3 / PGD |
| 引脚 30 | RD0 — Digital I/O / PSP0 |
| 引脚 31 | RD1 — Digital I/O / PSP1 |
| 引脚 32 | RD2 — Digital I/O / PSP2 |
| 引脚 33 | RD3 — Digital I/O / PSP3 |
| 引脚 34 | RD4 — Digital I/O / PSP4 |
| 引脚 35 | RD5 — Digital I/O / PSP5 |
| 引脚 36 | RD6 — Digital I/O / PSP6 |
| 引脚 37 | RD7 — Digital I/O / PSP7 |
| 引脚 38 | RE0 — Digital I/O / AN5 |
| 引脚 39 | RE1 — Digital I/O / AN6 |
| 引脚 40 | RE2 — Digital I/O / AN7 |
| 引脚 41 | RE3 — Digital I/O |
| 引脚 42 | RA0 — Digital I/O / AN0 |
| 引脚 43 | RA1 — Digital I/O / AN1 |
| 引脚 44 | RA2 — Digital I/O / AN2 |
| 引脚 45 | RA3 — Digital I/O / AN3 |
| 引脚 46 | RA4 — Digital I/O / T0CKI |
| 引脚 47 | RA5 — Digital I/O / AN4 |
| 引脚 48 | RA6 — Digital I/O / OSC2 |
| 引脚 49 | RA7 — Digital I/O / OSC1 |
| 引脚 50 | VSS — Ground |
| 引脚 51 | VDD — Positive supply |
| 引脚 52 | COM0 — LCD common driver 0 |
| 引脚 53 | COM1 — LCD common driver 1 |
| 引脚 54 | COM2 — LCD common driver 2 |
| 引脚 55 | COM3 — LCD common driver 3 |
| 引脚 56 | SEG8 — LCD segment driver 8 |
| 引脚 57 | SEG9 — LCD segment driver 9 |
| 引脚 58 | SEG10 — LCD segment driver 10 |
| 引脚 59 | SEG11 — LCD segment driver 11 |
| 引脚 60 | SEG12 — LCD segment driver 12 |
| 引脚 61 | SEG13 — LCD segment driver 13 |
| 引脚 62 | SEG14 — LCD segment driver 14 |
| 引脚 63 | SEG15 — LCD segment driver 15 |
| 引脚 64 | MCLR — Reset (active low) |
典型应用
PIC18F65K90-E/PT 适用于 6 应用s: Battery-Powered LCD Meter, Thermostat with Capacitive Touch HMI, White-Goods Control Board, Industrial HMI Keypad Module, Medical Infusion Pump User Interface, Solar-Powered IoT Sensor Node with Display.
Battery-Powered LCD Meter
The PIC18F65K90-E/PT fits battery-powered LCD meters thanks to its nanoWatt XLP deep-sleep current in the nA range, integrated LCD driver for up to 192 segments, and 1.8 V to 5.5 V operation that lets the same PCB run from two alkaline cells, a CR2032 coin cell, or a single lithium primary. Place the MCU between the battery stack and the LCD glass; the charge pump generates V LCD from V DD directly, removing the need for an external negative bias. Compared to a discrete LCD driver plus external MCU solution, the K90 collapses BOM by 1 IC and 4 to 6 passives, and the -E temperature grade (-40 °C to +125 °C) supports outdoor metering.
推荐
Thermostat with Capacitive Touch HMI
The PIC18F65K90-E/PT is ideal for wall-mounted thermostats because the CTMU module drives up to 24 capacitive touch buttons with no external analog IC, and the integrated LCD driver handles the segmented display plus backlight control on the same die. Place 24 touch electrodes under the front panel and route them to the CTMU channels; the firmware uses the ADC to measure charge time and debounce. Unlike mechanical-button thermostats, capacitive touch eliminates gasket wear and gives a fully sealed front face for IP54 indoor enclosures.
推荐
White-Goods Control Board
The PIC18F65K90-E/PT serves washing-machine, dishwasher, and oven control boards where a single MCU must drive a 7-segment or dot-matrix LCD, scan a capacitive touch keypad, and run the motor/relay logic simultaneously. Fit the K90's 54 I/O pins: 24 for touch, 8 for LCD backlight PWM, 12 for relay/triac drivers, and 10 for motor encoder / UART diagnostics. The 64 MHz (16 MIPS) core sustains real-time control loops at 1 kHz while servicing the LCD refresh and CTMU scans. AEC-Q100 screening is not claimed but the -E grade extends to +125 °C, sufficing for behind-panel thermal exposure.
推荐
Industrial HMI Keypad Module
The PIC18F65K90-E/PT works well in industrial HMI keypad modules that communicate to a host PLC or controller via RS-485, CAN, or UART. Use the K90's USART plus the CTMU to scan a 4x6 metal-touch keypad, then forward key states over the serial link; the LCD driver simultaneously displays menu labels on a 96- or 128-segment glass. The extended -40 °C to +125 °C temperature grade handles factory-floor cold starts and cabinet heat soak, while the K-series nanoWatt XLP standby lets the module idle below 100 nA for battery-backed tag displays.
推荐
Medical Infusion Pump User Interface
The PIC18F65K90-E/PT supports medical infusion-pump user interfaces where a single MCU drives the display, touch keypad, alarm buzzer, and non-critical housekeeping while a separate dedicated safety MCU handles the fluidics. Fit the K90's LCD driver for the segmented status display, CTMU for the silicone-keypad replacement, and PWM for the buzzer tone. Per IEC 60601 the K90 should be confined to the HMI partition and isolated from life-critical functions; the -E grade's +125 °C ceiling is appropriate for the control-board thermal environment inside an enclosure.
推荐
Solar-Powered IoT Sensor Node with Display
The PIC18F65K90-E/PT fits solar-powered IoT sensor nodes with a local segmented LCD readout, because the nanoWatt XLP sleep modes drop quiescent current to single-digit nA while retaining RAM, and the LCD driver remains active in deep sleep to keep the last measured value visible. Wake on RTCC, sample the sensor, update the LCD, transmit via UART/Wi-Fi module, then return to sleep. Solar energy budgets of 1 to 2 mAh per day are sufficient for periodic measurements every few minutes, leveraging the K90's ultra-low-power wake, ADC, and LCD refresh without external components.
推荐
推荐产品汇总
工程参考数据： PIC18F65K90-E/PT ——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/PT | PIC18F66K90-E/PT | PIC18F67K90-E/PT | PIC18F87K90-E/PT | PIC18F65K80T-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (10x10 mm) | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same |
| Flash Program Memory | 32 KB | 32 KB | 64 KB | 128 KB | 128 KB | 32 KB |
| RAM | 2 KB | 2 KB | 4 KB | 4 KB | 4 KB | 2 KB |
| LCD Driver | Yes (up to 192 segments) | Yes (up to 192 segments) | Yes (up to 192 segments) | Yes (up to 192 segments) | Yes (up to 192 segments) | No |
| CTMU Touch Channels | Up to 24 | Up to 24 | Up to 24 | Up to 24 | Up to 24 | 0 |
| Maximum CPU Speed | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) |
| Operating Temperature | -40 °C to +125 °C (Extended) | -40 °C to +85 °C (Industrial) | -40 °C to +125 °C (Extended) | -40 °C to +125 °C (Extended) | -40 °C to +125 °C (Extended) | -40 °C to +85 °C (Industrial) |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
关键差异点
- Extended -40 °C to +125 °C temperature range vs industrial -85 °C ceiling （对比 PIC18F65K90-I/PT)
- Integrated LCD driver and CTMU peripherals in the same package （对比 PIC18F65K80T-I/PT)
- 32 KB Flash matches this part exactly; 66K90 / 67K90 / 87K90 drop-ins add memory （对比 PIC18F66K90-E/PT)
设计说明
Place the VLCD1, VLCD2, and VLCD3 charge-pump capacitors as close to the MCU pins as possible using short traces to a quiet ground. A 1 µF X7R ceramic on each VLCD pin and a 100 nF bulk on VDD adjacent to the IC are the minimum recommended values per the datasheet. Without these capacitors the LCD will show uneven contrast or fail to bias the segment commons correctly.
For battery operation below 2 V, enable the nanoWatt XLP deep-sleep mode and use the RTCC (real-time clock calendar) alarm to wake the MCU periodically. According to the datasheet, deep-sleep current is below 100 nA typical with RAM retention; combined with the LCD segment driver staying active in sleep, this enables coin-cell operation for years. Be sure to disable all unused modules in the OSCCON, PMD, and FVRCON registers before entering sleep to minimize current draw.
CTMU capacitive touch sensing is sensitive to PCB trace capacitance and ground loops. Route touch electrodes as short, narrow traces with the touch pad area at least 8 mm² and a uniform ground flood at least 10 mm away. Avoid running digital signals parallel to or beneath touch traces; cross at right angles if necessary. A grounded guard ring around each electrode improves noise immunity in industrial environments.
Do not use the PIC18F67J11-I/PT as a transparent substitute for the PIC18F65K90-E/PT - although both are 64-pin TQFP PIC18 parts, the J11 uses a different oscillator module, programming interface, and LCD driver register map. Firmware compiled for K90 will not run on J11 without porting; the K90 family and the J11 family have different peripheral libraries in MPLAB XC8. Always cross-check the peripheral compatibility matrix in the Microchip selector guide before substituting across families.
合规信息
RoHS and REACH compliant per Microchip product page. The -E temperature grade (-40 °C to +125 °C) is NOT the same as AEC-Q100 automotive qualification; for AEC-Q100 screened parts, look for parts in the PIC18F87K90 automotive catalog. Lead-free and halogen-free per Microchip environmental compliance documentation.
