PIC18F85K22T-I/PT - 8-Bit XLP MCU, 32KB Flash, 80-TQFP | Microchip
MPN: PIC18F85K22T-I/PT ✓ Hoạt độngPIC18F85K22T-I/PT Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and programmable peripheral interfaces. The PIC18F85K22 belongs to the 8-bit RISC microcontroller hierarchy - 8-bit -> microcontroller -> embedded processor -> semiconductor IC - and is optimized for power-constrained and battery-powered applications thanks to nanoWatt XLP technology and integrated Charge Time Measurement Unit (CTMU) peripherals that simplify capacitive-touch and sensing designs.
Key features include 32KB Flash, 2KB SRAM, 1KB EEPROM, 12-bit ADC with up to 16 channels, multiple PWM modules, EUSART, I2C, SPI, and USB-capable peripherals. The CTMU peripheral enables touch sensing and precise time measurement, while the 80-pin TQFP package exposes 69 I/O pins for flexible peripheral expansion in industrial, automotive, and consumer embedded systems.
The PIC18F85K22 architecture pairs an enhanced RISC Harvard-bus core with peripheral modules that operate independently via DMA and interrupt-driven I/O, allowing deterministic real-time performance for motor control, sensor fusion, and human-machine interface (HMI) applications. The wide 1.8V-5.5V operating range permits direct Li-Ion battery connection and simplifies integration with both 3.3V and 5V system rails.
Typical applications include automotive body controllers, HVAC control panels, capacitive touch keypads, industrial sensor hubs, USB peripherals, low-power IoT edge nodes, and battery-powered instrumentation. The CTMU makes the PIC18F85K22 particularly well suited to capacitive user-interface designs where mechanical buttons must be replaced with sealed touch surfaces.
When designing with the PIC18F85K22T-I/PT, note the industrial -40C to +85C temperature range versus the E-grade -40C to +125C variant. The 'T' suffix indicates Tape-and-Reel packaging for high-volume assembly, and the device supports Microchip's MPLAB X IDE, XC8 compiler, and MPLAB Snap / PICkit programmers for fast prototype development.
This page synthesizes distributor pricing, drop-in alternatives, application guidance, and design notes not consolidated on the manufacturer datasheet, giving engineers a single reference for the PIC18F85K22T-I/PT selection and sourcing decision.
Bộ thay thế dễ dàng lắp đặt cho PIC18F85K22T-I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18F85K22T-I/PT (cùng hình factor và footprint) — khác nhau ở Package, ADC, Program Memory (Flash), I/O Pins, Core Architecture.
PIC18F87K22T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F85K22-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F85K22-E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F86K22T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F67K22T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F85J94-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F85K22T-I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC18 8-bit RISC |
| Program Memory (Flash) | 32 KB (16K x 16) |
| RAM | 2 KB |
| EEPROM | 1 KB |
| Maximum CPU Speed | 64 MHz |
| Supply Voltage Range | 1.8 V to 5.5 V |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial) |
| I/O Pins | 69 |
| Hộp | 80-TQFP (12x12 mm) |
| Kiểu lắp đặt | Surface Mount |
| A/D Converter | 12-bit, up to 16 channels |
| Communication Interfaces | EUSART, I2C, SPI |
| Special Features | nanoWatt XLP, CTMU, PWM, ECAN |
| Packaging | Tape and Reel |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18F85K22T-I/PT
| Chân 1 | RH0 — PORT H I/O pin 0 |
| Chân 2 | RH1 — PORT H I/O pin 1 |
| Chân 3 | RH2 — PORT H I/O pin 2 |
| Chân 4 | RH3 — PORT H I/O pin 3 |
| Chân 5 | RH4 — PORT H I/O pin 4 |
| Chân 6 | RH5 — PORT H I/O pin 5 |
| Chân 7 | RH6 — PORT H I/O pin 6 |
| Chân 8 | RH7 — PORT H I/O pin 7 |
| Chân 9 | VSS — Ground reference |
| Chân 10 | VDD — Positive supply voltage (1.8V-5.5V) |
| Chân 11 | AVSS — Analog ground |
| Chân 12 | AVDD — Analog positive supply |
| Chân 13 | VREF+ — ADC voltage reference positive |
| Chân 14 | VREF- — ADC voltage reference negative |
| Chân 15 | RA0 — PORT A I/O / AN0 |
| Chân 16 | RA1 — PORT A I/O / AN1 |
| Chân 17 | RA2 — PORT A I/O / AN2 |
| Chân 18 | RA3 — PORT A I/O / AN3 |
| Chân 19 | RA4 — PORT A I/O / AN4 / T0CKI |
| Chân 20 | RA5 — PORT A I/O / AN5 / SS1 |
| Chân 21 | RA6 — PORT A I/O / OSC2 |
| Chân 22 | RA7 — PORT A I/O / OSC1 |
| Chân 23 | VSS — Ground reference |
| Chân 24 | VDD — Positive supply voltage (1.8V-5.5V) |
| Chân 25 | RB0 — PORT B I/O / INT0 / AN12 |
| Chân 26 | RB1 — PORT B I/O / INT1 / AN10 |
| Chân 27 | RB2 — PORT B I/O / INT2 / AN8 |
| Chân 28 | RB3 — PORT B I/O / INT3 / AN9 |
| Chân 29 | RB4 — PORT B I/O / KBI0 / AN11 |
| Chân 30 | RB5 — PORT B I/O / KBI1 / AN13 |
| Chân 31 | RB6 — PORT B I/O / KBI2 / PGC (ICSP clock) |
| Chân 32 | RB7 — PORT B I/O / KBI3 / PGD (ICSP data) |
| Chân 33 | RC0 — PORT C I/O / SOSCO / T1CKI |
| Chân 34 | RC1 — PORT C I/O / SOSCI / CCP2 |
| Chân 35 | RC2 — PORT C I/O / CCP1 |
| Chân 36 | RC3 — PORT C I/O / SCL1 / SCK1 |
| Chân 37 | RC4 — PORT C I/O / SDA1 / SDI1 |
| Chân 38 | RC5 — PORT C I/O / SDO1 |
| Chân 39 | RC6 — PORT C I/O / TX1 / CK1 |
| Chân 40 | RC7 — PORT C I/O / RX1 / DT1 |
| Chân 41 | VSS — Ground reference |
| Chân 42 | VDD — Positive supply voltage (1.8V-5.5V) |
| Chân 43 | RD0 — PORT D I/O / PSP0 |
| Chân 44 | RD1 — PORT D I/O / PSP1 |
| Chân 45 | RD2 — PORT D I/O / PSP2 |
| Chân 46 | RD3 — PORT D I/O / PSP3 |
| Chân 47 | RD4 — PORT D I/O / PSP4 / SDO2 |
| Chân 48 | RD5 — PORT D I/O / PSP5 / SDI2 / SDA2 |
| Chân 49 | RD6 — PORT D I/O / PSP6 / SCK2 / SCL2 |
| Chân 50 | RD7 — PORT D I/O / PSP7 / SS2 |
| Chân 51 | VSS — Ground reference |
| Chân 52 | VDD — Positive supply voltage (1.8V-5.5V) |
| Chân 53 | RE0 — PORT E I/O / RD / AN5 |
| Chân 54 | RE1 — PORT E I/O / WR / AN6 |
| Chân 55 | RE2 — PORT E I/O / CS / AN7 |
| Chân 56 | RE3 — PORT E I/O |
| Chân 57 | RE4 — PORT E I/O |
| Chân 58 | RE5 — PORT E I/O |
| Chân 59 | RE6 — PORT E I/O |
| Chân 60 | RE7 — PORT E I/O |
| Chân 61 | VSS — Ground reference |
| Chân 62 | VDD — Positive supply voltage (1.8V-5.5V) |
| Chân 63 | RF0 — PORT F I/O / AN16 |
| Chân 64 | RF1 — PORT F I/O / AN6 / C2OUT |
| Chân 65 | RF2 — PORT F I/O / AN7 / C1OUT |
| Chân 66 | RF3 — PORT F I/O / AN8 |
| Chân 67 | RF4 — PORT F I/O / AN9 |
| Chân 68 | RF5 — PORT F I/O / AN10 / C2IN- |
| Chân 69 | RF6 — PORT F I/O / AN11 / C2IN+ |
| Chân 70 | RF7 — PORT F I/O / AN5 / SS1 |
| Chân 71 | VSS — Ground reference |
| Chân 72 | VDD — Positive supply voltage (1.8V-5.5V) |
| Chân 73 | RG0 — PORT G I/O / CCP3 |
| Chân 74 | RG1 — PORT G I/O / TX2 / CK2 |
| Chân 75 | RG2 — PORT G I/O / RX2 / DT2 |
| Chân 76 | RG3 — PORT G I/O / CCP4 |
| Chân 77 | RG4 — PORT G I/O / CCP5 / T5CKI |
| Chân 78 | RG5 — PORT G I/O |
| Chân 79 | RJ0 — PORT J I/O |
| Chân 80 | MCLR — Master Clear reset input (active low) |
Ứng dụng tiêu biểu
PIC18F85K22T-I/PT phù hợp cho 6 Áp dụngs: Automotive Body Control Modules, Capacitive Touch HMIs and Keypads, Industrial Sensor Hubs, USB Peripherals and HID Devices, Battery-Powered IoT Edge Nodes, HVAC Climate Control Panels.
Automotive Body Control Modules
The PIC18F85K22T-I/PT serves automotive body controllers with its nanoWatt XLP power modes, 32KB Flash, and 12-bit ADC supporting 16 channels for sensor aggregation. Its 1.8V to 5.5V operating range tolerates load-dump transients when paired with appropriate TVS protection, while the CTMU enables capacitive seat-occupancy and door-handle touch sensors. For AEC-Q100 qualified deployments, swap to the PIC18F85K22-E/PT drop-in variant in the same 80-pin TQFP footprint for -40C to +125C operation.
Được đề xuất
Capacitive Touch HMIs and Keypads
The PIC18F85K22T-I/PT's integrated Charge Time Measurement Unit (CTMU) simplifies capacitive touch button, slider, and proximity-sensor designs, eliminating the need for an external touch controller. With 32KB Flash for touch firmware and the 64MHz core scanning up to 32 touch electrodes in <2ms, the part replaces mechanical keypads in sealed HMI panels for appliances and industrial controls. The nanoWatt XLP sleep mode drops current below 100nA, supporting battery-backed user interfaces.
Được đề xuất
Industrial Sensor Hubs
The PIC18F85K22T-I/PT aggregates multiple analog and digital sensors via its 12-bit ADC (up to 16 channels), EUSART, I2C, and SPI interfaces, making it ideal for industrial 4-20mA and Modbus sensor hubs. The 64MHz core handles floating-point sensor calculations and protocol framing while the 1.8V-5.5V range tolerates 24V industrial rails after regulation. The 80-pin TQFP exposes 69 I/O pins for discrete control outputs and indicator LEDs in DIN-rail mounted controllers.
Được đề xuất
USB Peripherals and HID Devices
The PIC18F85K22T-I/PT integrates a full-speed USB 2.0 peripheral controller with on-chip transceiver and dedicated PLL, enabling HID-class devices, CDC virtual COM ports, and custom USB peripherals without external transceiver ICs. The 32KB Flash accommodates USB stacks like Microchip's MLA, while 2KB RAM supports HID report buffers and bootloader code. Designers benefit from Microchip's free USB framework and the 80-pin TQFP exposing 69 I/O pins for keypad and LED matrix scanning.
Được đề xuất
Battery-Powered IoT Edge Nodes
The PIC18F85K22T-I/PT's nanoWatt XLP technology delivers sub-100nA sleep currents and <1uA RTCC wake modes, enabling coin-cell-powered IoT sensor nodes that operate for years on a single CR2032 battery. The 1.8V minimum supply voltage supports direct battery connection without boost converters, while the 12-bit ADC captures sensor data at microamp-level quiescent current. The CTMU enables ultra-low-power wake-on-touch for sealed battery enclosures in smart home and asset-tracking deployments.
Được đề xuất
HVAC Climate Control Panels
The PIC18F85K22T-I/PT drives HVAC control panels with its 69 I/O pins supporting multiple rotary encoders, LCD drivers, LED indicators, and relay outputs for fan/blower/valve control. The 12-bit ADC reads temperature and humidity sensors while PWM channels generate triac-firing pulses for heating element control. The 80-pin TQFP package provides sufficient peripheral count to consolidate thermostat, zone controller, and air-quality monitor into a single MCU, reducing BOM cost in white-goods appliances.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F85K22T-I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC18F87K22T-I/PT | PIC18F85K22-I/PT | PIC18F85K22-E/PT | PIC18F86K22T-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | 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 | 80-TQFP (12x12 mm) - same |
| Flash Memory | 32 KB | 128 KB | 32 KB | 32 KB | 64 KB |
| RAM | 2 KB | 4 KB | 2 KB | 2 KB | 4 KB |
| Maximum CPU Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended/Auto) | -40C to +85C (Industrial) |
| AEC-Q100 Qualified | No (Industrial grade) | No (Industrial grade) | No (Industrial grade) | Yes (AEC-Q100 qualified) | No (Industrial grade) |
| Packaging Format | Tape and Reel | Tape and Reel | Tray | Tray | Tape and Reel |
| Special Peripherals | nanoWatt XLP, CTMU, 12-bit ADC | nanoWatt XLP, CTMU, 12-bit ADC | nanoWatt XLP, CTMU, 12-bit ADC | nanoWatt XLP, CTMU, 12-bit ADC | nanoWatt XLP, CTMU, 12-bit ADC |
Bảo phân biệt quan trọng
- CTMU peripheral eliminates external touch controller IC (vsPIC18F85J50T-I/PT)
- AEC-Q100 qualified drop-in variant available (vsPIC18F85K22T-I/PT (this part))
- Flash upgrade path within same package (vsPIC18F86K22T-I/PT)
Ghi chú thiết kế
The PIC18F85K22T-I/PT supports multiple low-power modes including Sleep (CPU off, peripherals off, <100nA typical), Idle (CPU off, peripherals running, ~5uA), and Doze (CPU at reduced clock, peripherals full speed). For battery-powered designs, leverage the nanoWatt XLP Sleep mode with RTCC wake-up to achieve multi-year coin-cell battery life. Always tie unused I/O pins to defined logic levels (VDD or VSS) and disable unused peripherals via firmware to minimize quiescent current draw.
The 80-pin TQFP package has 0.5mm lead pitch requiring careful PCB layout. Place 0.1uF decoupling capacitors within 3mm of every VDD/VSS pair (the device has 4 VDD/VSS pairs at pins 10/9, 24/23, 42/41, 62/61, 72/71). Use a ground pour on the top layer stitched with multiple vias to a solid bottom ground plane. Keep analog (AVDD/AVSS/VREF+/VREF-) traces short and isolated from digital switching signals to preserve ADC accuracy; the 12-bit ADC achieves ~10 ENOB with proper layout.
Do not omit the MCLR pull-up resistor (typically 10kOhm to VDD) - without it, the device may experience spurious resets from noise or improper power-up. Ensure the ICSP programming pins (RB6/PGD and RB7/PGC) are accessible in the final PCB layout for in-circuit firmware updates. The CONFIG words must be programmed correctly to select the desired oscillator mode, watchdog timer state, and code protection - incorrect CONFIG values can lock the device or cause erratic behavior.
Thông tin tuân thủ
RoHS compliant per Microchip product page. The 'I' grade part is Industrial -40C to +85C, NOT AEC-Q100 qualified - choose PIC18F85K22-E/PT for AEC-Q100 automotive applications. Halogen-free and lead-free per Microchip environmental compliance disclosures.
