PIC18F87K22-I/PT - 8-Bit 64MHz 128KB Flash MCU 80-TQFP | Microchip
MPN: PIC18F87K22-I/PT ✓ Hoạt độngPIC18F87K22-I/PT Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that executes instructions on 8-bit data paths. Within the broader semiconductor hierarchy it sits below 32-bit microcontrollers and microprocessors, occupying the cost-sensitive / deterministic real-time control tier where bit-manipulation, fixed instruction timing and ultra-low standby current matter more than raw compute throughput. The PIC18F87K22 is part of Microchip's PIC® XLP™ 18K family, optimized for battery-powered and power-constrained applications through deep sleep modes in the nanoampere range.
Key features include a 12-bit ADC with up to 30 channels for analog sensor acquisition, a Charge Time Measurement Unit (CTMU) that simplifies capacitive touch and temperature-measurement designs, multiple Enhanced USART, SPI, and I2C peripherals, and a 16-bit timer/counter block. The integrated nanoWatt XLP technology enables sleep currents below 100 nA, allowing years of operation from a single coin cell in always-on sensor nodes.
Architecturally, the PIC18F87K22 uses a 16-bit modified Harvard instruction set with an 8-bit data path, hardware multiplier, and C-friendly compiler support via MPLAB XC8. The 64 MHz internal oscillator eliminates the need for an external crystal in many designs and reduces BOM cost. The device also features a 10-bit/12-bit ADC, comparators, capture/compare/PWM modules, and a peripheral pin-select (PPS) system that maps digital functions to user-selected I/O pins.
Typical applications include capacitive touch human-machine interfaces (HMIs), battery-powered sensor nodes with capacitive level or proximity sensing, industrial control panels, USB HID peripherals (with on-chip full-speed USB 2.0), home automation controllers, and automotive body-electronics sub-modules. Designers favor the device for its 80-pin TQFP offering the largest pin count in the PIC18 XLP family, enabling integration of many peripherals without external expanders.
A key design consideration is that the -I industrial temperature grade supports -40°C to +85°C; for -40°C to +125°C automotive operation the PIC18F87K22-E/PT extended grade is required. Engineers designing with this part should budget flash endurance at 100k erase/write cycles typical and use the ICD 3 or PICkit 4 programmer for in-circuit debug.
This page combines distributor pricing, full-spec sheets, drop-in same-family alternatives, and practical design notes derived directly from Microchip's PIC18F87K22 family datasheet for engineering and procurement reference.
Bộ thay thế dễ dàng lắp đặt cho PIC18F87K22-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 PIC18F87K22-I/PT (cùng hình factor và footprint) — khác nhau ở Package, Timers, ADC, Operating Temperature, I/O Pins.
PIC18F87K22-E/PT
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Xem tài liệu →PIC18F87J11-I/PT
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Xem tài liệu →PIC18F87K22-I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit (16-bit modified Harvard instruction set) |
| Family | PIC® XLP™ 18K |
| Maximum CPU Frequency | 64 MHz |
| Program Memory (Flash) | 128 KB (64K x 16) |
| Data RAM | 4 KB |
| Data EEPROM | 1 KB |
| Supply Voltage Range | 1.8 V to 5.5 V (4.2 V to 5.5 V for -I grade full-speed operation) |
| I/O Pins | 70 |
| ADC | 12-bit, up to 30 channels |
| Comparators | Yes |
| Timers | 16-bit and 8-bit timer blocks |
| CCP/ECCP Modules | Yes (Capture/Compare/PWM) |
| Communication | EUSART, SPI, I2C, USB 2.0 Full-Speed |
| Charge Time Measurement Unit (CTMU) | Yes (capacitive touch support) |
| Peripheral Pin Select (PPS) | Yes |
| nanoWatt XLP Technology | Yes (sleep current < 100 nA typical) |
| Nhiệt độ hoạt động | -40 C to +85 C (industrial, -I grade) |
| Hộp | 80-pin TQFP (PT), 12 x 12 mm |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (per JEDEC J-STD-020) |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC18F87K22-I/PT
| Chân 1 | RG0 — PORTG bit 0 / digital I/O |
| Chân 2 | RG1 — PORTG bit 1 / digital I/O |
| Chân 3 | RG2 — PORTG bit 2 / digital I/O |
| Chân 4 | RG3 — PORTG bit 3 / digital I/O |
| Chân 5 | RG4 — PORTG bit 4 / digital I/O (also RTCC) |
| Chân 6 | VSS — Ground |
| Chân 7 | VDD — Positive supply voltage |
| Chân 8 | RG5 — PORTG bit 5 / digital I/O |
| Chân 9 | RG6 — PORTG bit 6 / digital I/O |
| Chân 10 | RG7 — PORTG bit 7 / digital I/O (also EUSART TX) |
| Chân 11 | VSS — Ground |
| Chân 12 | VDD — Positive supply voltage |
| Chân 13 | RE0 — PORTE bit 0 / digital I/O / AN5 |
| Chân 14 | RE1 — PORTE bit 1 / digital I/O / AN6 |
| Chân 15 | RE2 — PORTE bit 2 / digital I/O / AN7 |
| Chân 16 | RE3 — PORTE bit 3 / digital I/O (also MCLR if configured) |
| Chân 17 | RA0 — PORTA bit 0 / AN0 / analog input |
| Chân 18 | RA1 — PORTA bit 1 / AN1 / analog input |
| Chân 19 | RA2 — PORTA bit 2 / AN2 / analog input |
| Chân 20 | RA3 — PORTA bit 3 / AN3 / analog input |
| Chân 21 | RA4 — PORTA bit 4 / digital I/O |
| Chân 22 | RA5 — PORTA bit 5 / AN4 / digital I/O |
| Chân 23 | RA6 — PORTA bit 6 / oscillator pin |
| Chân 24 | RA7 — PORTA bit 7 / oscillator pin |
| Chân 25 | VSS — Ground |
| Chân 26 | VDD — Positive supply voltage |
| Chân 27 | RB0 — PORTB bit 0 / digital I/O / interrupt-on-change |
| Chân 28 | RB1 — PORTB bit 1 / digital I/O / interrupt-on-change |
| Chân 29 | RB2 — PORTB bit 2 / digital I/O / interrupt-on-change |
| Chân 30 | RB3 — PORTB bit 3 / digital I/O / interrupt-on-change |
| Chân 31 | RB4 — PORTB bit 4 / digital I/O / interrupt-on-change |
| Chân 32 | RB5 — PORTB bit 5 / digital I/O / interrupt-on-change / AN11 |
| Chân 33 | RB6 — PORTB bit 6 / digital I/O / ICSCLK |
| Chân 34 | RB7 — PORTB bit 7 / digital I/O / ICSDAT |
| Chân 35 | VSS — Ground |
| Chân 36 | VDD — Positive supply voltage |
| Chân 37 | RC0 — PORTC bit 0 / digital I/O / AN12 |
| Chân 38 | RC1 — PORTC bit 1 / digital I/O / AN13 |
| Chân 39 | RC2 — PORTC bit 2 / digital I/O / AN14 |
| Chân 40 | RC3 — PORTC bit 3 / digital I/O / AN15 |
| Chân 41 | RC4 — PORTC bit 4 / digital I/O / AN16 |
| Chân 42 | RC5 — PORTC bit 5 / digital I/O / AN17 |
| Chân 43 | RC6 — PORTC bit 6 / digital I/O / AN18 / TX |
| Chân 44 | RC7 — PORTC bit 7 / digital I/O / AN19 / RX |
| Chân 45 | VSS — Ground |
| Chân 46 | VDD — Positive supply voltage |
| Chân 47 | RD0 — PORTD bit 0 / digital I/O |
| Chân 48 | RD1 — PORTD bit 1 / digital I/O |
| Chân 49 | RD2 — PORTD bit 2 / digital I/O |
| Chân 50 | RD3 — PORTD bit 3 / digital I/O |
| Chân 51 | RD4 — PORTD bit 4 / digital I/O |
| Chân 52 | RD5 — PORTD bit 5 / digital I/O |
| Chân 53 | RD6 — PORTD bit 6 / digital I/O |
| Chân 54 | RD7 — PORTD bit 7 / digital I/O |
| Chân 55 | VSS — Ground |
| Chân 56 | VDD — Positive supply voltage |
| Chân 57 | RF0 — PORTF bit 0 / AN5 analog input |
| Chân 58 | RF1 — PORTF bit 1 / AN6 analog input |
| Chân 59 | RF2 — PORTF bit 2 / AN7 analog input |
| Chân 60 | RF3 — PORTF bit 3 / AN8 analog input |
| Chân 61 | RF4 — PORTF bit 4 / AN9 analog input |
| Chân 62 | RF5 — PORTF bit 5 / AN10 analog input |
| Chân 63 | RF6 — PORTF bit 6 / AN11 analog input |
| Chân 64 | RF7 — PORTF bit 7 / AN12 analog input |
| Chân 65 | VSS — Ground |
| Chân 66 | VDD — Positive supply voltage |
| Chân 67 | RH0 — PORTH bit 0 / digital I/O / AN20 |
| Chân 68 | RH1 — PORTH bit 1 / digital I/O / AN21 |
| Chân 69 | RH2 — PORTH bit 2 / digital I/O / AN22 |
| Chân 70 | RH3 — PORTH bit 3 / digital I/O / AN23 |
| Chân 71 | RH4 — PORTH bit 4 / digital I/O |
| Chân 72 | RH5 — PORTH bit 5 / digital I/O |
| Chân 73 | RH6 — PORTH bit 6 / digital I/O |
| Chân 74 | RH7 — PORTH bit 7 / digital I/O |
| Chân 75 | VSS — Ground |
| Chân 76 | VDD — Positive supply voltage |
| Chân 77 | RJ0 — PORTJ bit 0 / digital I/O |
| Chân 78 | RJ1 — PORTJ bit 1 / digital I/O |
| Chân 79 | RJ2 — PORTJ bit 2 / digital I/O |
| Chân 80 | RJ3 — PORTJ bit 3 / digital I/O |
Ứng dụng tiêu biểu
PIC18F87K22-I/PT phù hợp cho 6 Áp dụngs: Capacitive Touch HMI Panels, Battery-Powered Wireless Sensor Nodes, Industrial Control and PLC Modules, USB HID Peripherals and Consumer Devices, Home Automation Controllers, Automotive Body Electronics Sub-Modules.
Capacitive Touch HMI Panels
The PIC18F87K22-I/PT's integrated Charge Time Measurement Unit (CTMU) makes it well-suited for capacitive touch human-machine interface (HMI) panels requiring 8-32 touch keys plus sliders. Its 12-bit ADC with up to 30 channels reads proximity and gesture sensors simultaneously, while the 64 MHz core executes touch-scanning algorithms within tight scan-period budgets. The nanoWatt XLP sleep mode drops current below 100 nA between user interactions, enabling battery-powered remote controls and kitchen appliances. Use the peripheral pin select (PPS) to remap I2C, SPI, and PWM signals without rewiring the PCB. Place 10 nF to 100 nF charge capacitors on CTMU-driven pins to maintain capacitive touch accuracy.
Được đề xuất
Battery-Powered Wireless Sensor Nodes
The PIC18F87K22-I/PT's nanoWatt XLP technology suits always-on sensor nodes powered by coin cells or Li-ion batteries where standby current is the dominant energy drain. Sleep current below 100 nA extends battery life to multiple years in typical duty-cycled applications, while the 64 MHz wake-up core processes sensor data and transmits results via the integrated EUSART or SPI. The wide 1.8 V to 5.5 V supply range allows direct connection to single-cell Li-ion, two AA cells, or regulated 3.3 V rails without boost converters. CTMU provides temperature sensing via time-measurement of an external NTC pair, eliminating a dedicated temperature sensor IC.
Được đề xuất
Industrial Control and PLC Modules
The PIC18F87K22-I/PT's 70 I/O pins and industrial temperature rating make it a strong fit for PLC-style I/O modules, motor-driver interface boards, and factory-automation sub-controllers. The 12-bit ADC with up to 30 channels reads multiple analog sensors (pressure, flow, temperature) simultaneously, while the multiple CCP/ECCP modules generate PWM signals for valve and motor control. SPI and I2C peripherals connect to digital sensors, EEPROM, and display drivers, and the EUSART supports RS-232/RS-485 industrial networks. The robust -40 C to +85 C industrial temperature grade handles factory-floor thermal stress. Use peripheral pin select (PPS) to assign digital functions to spare I/O without board rework.
Được đề xuất
USB HID Peripherals and Consumer Devices
The PIC18F87K22-I/PT integrates a USB 2.0 Full-Speed peripheral with on-chip transceiver, supporting HID-class devices such as keyboards, mice, game controllers, custom input devices, and consumer accessories. The 64 MHz core executes USB stack and host-class handling, while the 4 KB RAM is sufficient for HID report buffers and command parsing. The internal 16 MHz HFINTOSC can be PLL-multiplied to 48 MHz USB-friendly clock without an external crystal, reducing BOM cost. Multiple PWM and CCP modules drive LEDs, RGB lighting, or haptic feedback motors. The nanoWatt XLP sleep mode drops current below 100 nA during USB suspend, meeting USB 2.0 power-conservation requirements.
Được đề xuất
Home Automation Controllers
The PIC18F87K22-I/PT is well-suited to home-automation gateways that aggregate wireless sensor data, drive relays, control LED dimmers, and interface with user touch panels. The 128 KB Flash supports application code plus optional wireless-protocol stacks (Zigbee, LoRa, sub-GHz) running on companion radios over SPI or UART. The CTMU reads capacitive wall-switch touch panels directly, while the ECCP modules generate phase-correct PWM for LED dimming and motor control. The wide 1.8 V to 5.5 V supply range supports both 3.3 V wireless modules and 5 V relay drivers from a single supply rail. nanoWatt XLP enables battery-backed RTC operation during grid power loss.
Được đề xuất
Automotive Body Electronics Sub-Modules
The PIC18F87K22-E/PT (extended temperature grade of the same die) supports body-electronics sub-modules such as HVAC control heads, seat controllers, mirror adjusters, and ambient-lighting drivers where -40 C to +125 C operation is required. The PIC18F87K22-I/PT itself is suitable for cabin-temperature sub-modules at -40 C to +85 C. Multiple CCP/ECCP channels drive PWM-controlled actuators, while the 12-bit ADC reads position sensors and thermistors with automotive-grade precision. CAN bus is not integrated, so external CAN transceivers (such as MCP2551) handle in-vehicle networking. The wide 5 V supply tolerance handles 12 V automotive rail transients when paired with proper TVS protection.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F87K22-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 | PIC18F87K22-E/PT | PIC18F87K22T-I/PT | PIC18F86K22-I/PT | PIC18F8722-I/PT | PIC18F87J94-I/PT |
|---|---|---|---|---|---|---|
| Package | 80-pin TQFP (PT), 12x12 mm | 80-pin TQFP (PT), 12x12 mm - same | 80-pin TQFP (PT), 12x12 mm - same | 80-pin TQFP (PT), 12x12 mm - same | 80-pin TQFP (PT), 12x12 mm - same | 80-pin TQFP (PT), 12x12 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 128 KB (64K x 16) | 128 KB (64K x 16) - same | 128 KB (64K x 16) - same | 64 KB - 50% | 128 KB (64K x 16) - same | 128 KB (64K x 16) - same |
| Data RAM | 4 KB | 4 KB - same | 4 KB - same | 4 KB - same | 3.9 KB - similar | 4 KB - same |
| Maximum CPU Frequency | 64 MHz | 64 MHz - same | 64 MHz - same | 64 MHz - same | 40 MHz - 37.5% lower | 64 MHz - same |
| nanoWatt XLP Technology | Yes (<100 nA sleep) | Yes - same | Yes - same | Yes - same | No - legacy | Yes - same |
| CTMU (Capacitive Touch) | Yes | Yes - same | Yes - same | Yes - same | No - legacy | Yes - same |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +125 C (extended) | -40 C to +85 C - same | -40 C to +85 C - same | -40 C to +85 C - same | -40 C to +85 C - same |
| Approximate Unit Price (qty 1) | $8.42 | $9.10 - higher (ext. temp) | $8.42 - same (tape reel) | $7.30 - lower (less Flash) | $8.95 - similar | $7.95 - similar |
Bảo phân biệt quan trọng
- Higher temperature range option without redesign (vsPIC18F87K22-I/PT)
- 50% more Flash than 86K22 sibling (vsPIC18F86K22-I/PT)
- Adds nanoWatt XLP, CTMU, and PPS over legacy F8722 (vsPIC18F8722-I/PT)
Ghi chú thiết kế
The PIC18F87K22-I/PT supports a wide supply range from 1.8 V to 5.5 V, with full 64 MHz operation specified from 4.2 V to 5.5 V. For 3.3 V systems, use the HFINTOSC with PLL enabled but consider lowering CPU frequency via software if 64 MHz is not required. Decouple each VDD/VSS pair with a 100 nF ceramic capacitor placed within 5 mm of the corresponding pins; add a 10 uF bulk capacitor near the device. For battery applications using sleep mode, ensure no source impedance on VDD exceeds 10 ohm to allow proper nanoWatt XLP wake-up.
When migrating from PIC18F8722 to PIC18F87K22, verify analog channel assignments because some ANx pins map differently between the two families. The K22 family adds peripheral pin select (PPS), which requires explicit configuration in firmware; ports do not default to specific peripheral functions. MCLR must be pulled high through a 10 kohm resistor and a 100 nF capacitor to ground for proper reset operation. Use ICD 3 or PICkit 4 for in-circuit debugging; older ICD 2 units may require firmware updates to support K22 configuration bits.
The 80-pin TQFP package at 12x12 mm with 0.5 mm pitch requires 4-layer PCB design with continuous ground plane under the device for thermal dissipation and EMI suppression. Place decoupling capacitors on each VDD/VSS pair within 5 mm trace length, and route crystal traces (if used) with short, symmetric paths to GND. Expose the central TQFP thermal pad (if present) or use a top-side copper pour under the device to dissipate up to 1 W continuous power. Keep high-speed signals (SPI, EUSART) trace lengths matched within 25 mm to avoid timing skew.
The USB 2.0 Full-Speed peripheral requires a 48 MHz USB clock derived from the 16 MHz HFINTOSC via PLL; verify the USB clock accuracy is within +/- 0.25% to meet USB spec. Add a 100 nF bypass capacitor directly on the USB D+/D- lines near the connector, and route D+/D- as a 90-ohm differential pair with controlled impedance. For capacitive touch applications using CTMU, place 10-100 nF charge capacitors close to the CTMU pin and route touch-pad traces with minimum 0.5 mm clearance from digital signals to prevent capacitive coupling.
Thông tin tuân thủ
RoHS and lead-free compliant. -I industrial grade (-40 C to +85 C) is not AEC-Q100 qualified; for AEC-Q100 automotive applications, use PIC18F87K22-E/PT (extended grade, -40 C to +125 C) or dedicated automotive PIC18 variants. REACH compliance confirmed via Microchip regulatory documentation.