PIC18F86K22-I/PT - 64MHz 8-bit XLP MCU 64KB Flash 80-TQFP | Microchip
MPN： PIC18F86K22-I/PT ✓ 啟用中PIC18F86K22-I/PT 概覽
A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, peripherals, and I/O. Within the broader taxonomy, an MCU sits inside the embedded computing class (MCU -> 8-bit microcontroller -> RISC microcontroller -> embedded controller -> semiconductor). The PIC18 family from Microchip is a Harvard-architecture RISC core widely used in cost-sensitive, low-power, and mixed-signal embedded applications, ranging from industrial control to consumer appliances and battery-powered IoT nodes.
Key features include nanoWatt XLP sleep currents as low as 20 nA typical, a 16-bit instruction word, 75 instructions, 8x8 hardware multiply, an integrated CTMU for capacitive touch sensing, and on-chip mTouch support. The device also supports ICD (In-Circuit Debug) via two pins and ICSP (In-Circuit Serial Programming) for flash programming without external programmers.
The PIC18F86K22 uses an enhanced Harvard RISC core with 16-bit instructions and 8-bit data, allowing single-cycle execution for most instructions at 64MHz (15.625 ns per instruction cycle). The integrated CTMU provides constant-current source capabilities for capacitive touch, temperature sensing, and time-of-flight measurement, eliminating the need for external analog front-end circuitry.
Typical applications include capacitive touch user interfaces, industrial control panels, low-power sensor hubs, USB/HID peripherals (with an external transceiver), battery-powered medical devices, and home appliances. With 70 I/O pins and dual EUSART, the part is suitable as a host controller for multi-channel sensor arrays and human-machine interface boards.
When designing with this part, allocate time for CTMU calibration routines and use low-leakage PCB design practices to fully exploit the XLP sleep currents. The wide 1.8V to 5.5V operating range allows direct Li-ion cell operation, simplifying power-tree design.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including a comparison matrix against related PIC18F6x/8x K22 family members and a step-by-step selection guide for migration.
直接替換替代品，適用於 PIC18F86K22-I/PT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC18F86K22-I/PT （相同外形與佔位） — 差異在於 Package, ADC, Operating Temperature, I/O Pins, Comparators.
PIC18F87K22-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC18F86K22-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC18F86K22T-I/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC18F86K22-E/PT
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC18F86K22-I/PT 最大額定值與電氣特性
| Manufacturer | Microchip Technology |
| Series | PIC18F XLP |
| Core Processor | PIC18F 8-bit RISC |
| Core Size | 8-bit |
| Program Memory Size | 64 KB FLASH |
| RAM Size | 4 KB |
| EEPROM Size | 1 KB |
| Maximum Clock Speed | 64 MHz |
| Supply Voltage (Vdd) | 1.8 V to 5.5 V |
| I/O Pins | 70 |
| 資料匯流排寬度 | 8-bit (16-bit instruction) |
| 封裝 | 80-pin TQFP (PT) 12x12 mm |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40 C to +85 C (Industrial, -I suffix) |
| ADC | 12-bit, up to 16 channels |
| CTMU | Yes (Charge Time Measurement Unit) |
| nanoWatt XLP Technology | Yes (sleep current ~20 nA typical) |
| RoHS 狀態 | Compliant |
PIC18F86K22-I/PT 80-pin tqfp (pt) 12x12 mm 腳位配置指南
PIC18F86K22-I/PT（80-pin tqfp (pt) 12x12 mm 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： PIC18F86K22-I/PT.
請參閱 資料表 以查看完整腳位配置。
典型應用
PIC18F86K22-I/PT 適用於 6 應用s: Capacitive Touch User Interface, Industrial Control Panel, Low-Power Sensor Hub, Home Appliance Controller, Battery-Powered Medical Device, USB HID Peripheral.
Capacitive Touch User Interface
The PIC18F86K22-I/PT is ideally suited for capacitive touch interfaces because its integrated CTMU (Charge Time Measurement Unit) provides programmable constant-current source/sink that directly excites touch electrodes and measures discharge time, eliminating external analog front-end ICs. With up to 16 ADC channels and mTouch firmware library support, the MCU can drive 16+ touch sensors while the 64 MHz core runs the touch-scan state machine in <2 ms. The 70 I/O pins expose ample GPIO for LED feedback, haptics, and mechanical buttons on the same board, and the nanoWatt XLP sleep current (~20 nA typical) allows battery-powered remote controls or smart-switch panels to idle for years on a coin cell.
推薦
Industrial Control Panel
In industrial control panels, the PIC18F86K22-I/PT drives HMI displays, scans key matrices, and handles RS-485 or RS-232 communication through its EUSART peripherals. The dual EUSART configuration allows simultaneous fieldbus and debug/log ports, while the 64KB Flash hosts Modbus/RTU protocol stacks. The 12-bit ADC samples up to 16 analog sensor channels (temperature, pressure, flow) at 100 ksps aggregate, sufficient for closed-loop control loops at kHz rates. Operating from 1.8V to 5.5V over -40C to +85C industrial temperature range, the device survives 24V industrial bus transients when paired with external TVS protection.
推薦
Low-Power Sensor Hub
The PIC18F86K22-I/PT acts as a low-power sensor hub aggregating I2C/SPI sensors and forwarding data via UART or USB. The 64 MHz instruction rate allows the core to wake, sample 5+ sensors, run a moving-average filter, and return to sleep within 1 ms, while nanoWatt XLP idle at ~20 nA typical. With 4 KB SRAM, the part can buffer 200+ sensor packets before transmitting, and 1 KB EEPROM provides non-volatile configuration storage for calibration constants. The 1.8V minimum supply voltage enables direct Li-ion / 2xAA battery operation without boost converters.
推薦
Home Appliance Controller
In washing machines, dishwashers, ovens, and HVAC controllers, the PIC18F86K22-I/PT serves as the main MCU driving motor control PWM (via CCP/ECCP), reading user inputs, and managing display panels. The CTMU simplifies the rotary encoder or touch keypad interface, while the 12-bit ADC reads thermistor inputs for closed-loop temperature control. With 70 GPIO and dual EUSART, the device can simultaneously drive a UART-controlled display and a UART-controlled motor inverter. Industrial -40C to +85C qualification ensures reliable operation in appliance enclosures subject to heat soak and condensation.
推薦
Battery-Powered Medical Device
For portable medical devices such as glucose meters, pulse oximeters, and handheld patient monitors, the PIC18F86K22-I/PT provides the right balance of compute, low power, and analog integration. The 12-bit ADC measures optical or electrochemical sensor signals directly, while the CTMU enables capacitive proximity wake-up without mechanical buttons. NanoWatt XLP sleep currents below 1 uA extend shelf life on a single CR2032 coin cell to multiple years. The 64KB Flash supports USB/HID device stacks, allowing direct PC connectivity for data export without an external bridge chip.
推薦
USB HID Peripheral
The PIC18F86K22-I/PT can act as a low-speed USB Human Interface Device when paired with an external USB transceiver such as the MCP2200 or through firmware bit-banging on a dedicated GPIO. With 4 KB SRAM and 64 MHz throughput, the MCU handles HID report generation, debounce, and command parsing without DMA. The dual EUSART allows a simultaneous UART debug channel while USB is active. Industrial temperature and the robust PIC18 instruction set make this configuration popular for custom keyboards, mice, and barcode scanners in industrial settings.
推薦
推薦產品摘要
工程參考資料，適用於 PIC18F86K22-I/PT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC18F87K22-I/PT | PIC18F86K22T-I/PT | PIC18F86K22-E/PT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 80-TQFP (12x12 mm) | 80-TQFP (12x12 mm) - same | 80-TQFP (12x12 mm) - same | 80-TQFP (12x12 mm) - same |
| Flash Memory | 64 KB | 128 KB | 64 KB (same die) | 64 KB (same die) |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB |
| Maximum Clock Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (Extended) |
| I/O Pins | 70 | 70 | 70 | 70 |
| CTMU / Touch Support | Yes (CTMU + mTouch) | Yes (CTMU + mTouch) | Yes (CTMU + mTouch) | Yes (CTMU + mTouch) |
主要差異化特點
- Drop-in upgrade path within same footprint (對比PIC18F87K22-I/PT)
- Extended temperature variant for automotive (對比PIC18F86K22-E/PT)
- nanoWatt XLP sleep current for battery lifetime (對比Generic 8-bit MCU competitors)
設計說明
Estimated: at Vdd=3.3V, 64 MHz active, the PIC18F86K22-I/PT consumes ~15 mA typical; in nanoWatt XLP sleep, supply current drops to ~20 nA. To exploit fully real XLP, place decoupling (100 nF + 1 uF ceramic) within 5 mm of the Vdd/Vss pairs, and route all analog Vdd/Vss pairs separately from digital pairs to prevent digital switching noise coupling into ADC/CTMU references.
The 80-pin TQFP (12x12 mm, 0.5 mm pitch) requires a 4-layer PCB with a solid ground plane to control EMI and provide thermal spreading. MCLR must be pulled up through a 10 kohm resistor to Vdd, with a 100 nF cap to ground for in-circuit debug stability. Keep traces to the 16 MHz crystal (or external oscillator) under 5 mm and surround them with a guard ring tied to ground to minimize jitter on CTMU timing measurements.
Do not enable the PIC18F86K22 CTMU before the ADC reference settles; CTMU current sources share the FVR reference and starting them prematurely corrupts touch baselines. Always call mTouchInit() after a 10 ms power-on delay. Another common mistake is configuring PPS (Peripheral Pin Select) on a pin that is analog-only (ANx), which silently fails - check the datasheet pinout before assigning PPS functions.
When using the MSSP in SPI master mode at 64 MHz Fosc, the maximum reliable SPI clock is Fosc/4 = 16 MHz. Place a 33 ohm series resistor at each SPI output if the trace exceeds 25 mm, to dampen reflections. For I2C, do not exceed 400 kHz Standard mode without external 4.7 kohm pull-ups; the internal weak pull-ups (~50 kohm) are too weak for multi-device buses.
合規資訊
Microchip PIC18F86K22 family is RoHS compliant, lead-free, and halogen-free. The -E (extended temperature) variant is not AEC-Q100 qualified; AEC-Q100 automotive parts use a different ordering code. Always confirm REACH SVHC declarations with Microchip direct for high-volume production.
