PIC18F66K22-I/MRRSL - 8-bit MCU, 64KB Flash, 64MHz, 64-pin QFN | Microchip
MPN: PIC18F66K22-I/MRRSL ✓ Hoạt độngPIC18F66K22-I/MRRSL Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path with integrated CPU, Flash program memory, RAM, EEPROM, and peripherals. Within the semiconductor hierarchy it sits under microcontrollers, which sit under integrated circuits (ICs). The PIC18 family uses a RISC architecture with hardware multiplier, 31-level stack, and 16-bit instructions, sitting above baseline PIC10/12/16 parts in performance while remaining C-friendly through the MPLAB XC8 toolchain.
Key differentiating features of the PIC18F66K22 include 54 digital I/O lines, a 12-bit A/D converter with up to 16 channels, an 8-bit DAC, hardware CTMU for capacitive touch sensing, four 16-bit timers, three comparators, two ECCP and three CCP PWM modules, plus integrated USB 2.0 full-speed and CAN 2.0B peripherals. The XLP variant achieves nanoamp sleep currents, extending battery life in energy-harvesting and IoT edge nodes.
The device is fabricated in a low-power CMOS process with internal oscillator flexibility (31 kHz to 16 MHz HF, plus PLL to 64 MHz). Its wide 1.8-5.5 V range simplifies designs migrating between 3.3 V and 5 V rails, and the CTMU peripheral enables robust mTouch capacitive buttons, sliders, and proximity sensing without external components.
Typical applications include industrial control and HMI panels, USB/CAN-connected sensor hubs, capacitive touch user interfaces, battery-powered metering, and automotive body/comfort modules. Its 64 KB Flash and 4 KB RAM comfortably support USB stacks and CANopen/J1939 lightweight protocols in 8-bit C code.
When designing with this part, budget the QFN exposed pad with a continuous ground plane and thermal vias; without adequate bottom copper the high I/O count pushes junction temperature up under full I/O switching load. The MR package variant is recommended over PT (TQFP) for space-constrained PCBs requiring a smaller footprint with thermal pad soldering.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that are not collected in any single manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC18F66K22-I/MRRSL — 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 PIC18F66K22-I/MRRSL (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, ADC, I/O Pins, Operating Temperature.
PIC18F67K22-I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F65K22-I/MR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F65K90-I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F66K22-I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F66K22-E/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F66J55-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F66K22-I/MRRSL Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit Microcontroller (MCU) |
| Core Architecture | PIC18 (RISC, 16-bit instructions) |
| Family | PIC18F6xK22 (nanoWatt XLP) |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data RAM | 4 KB |
| EEPROM | 1 KB |
| Maximum CPU Speed | 64 MHz (200 ns instruction cycle) |
| Điện áp cung cấp | 1.8 V to 5.5 V (operating range 2.0-5.5 V with full-spec ADC) |
| I/O Pins | 54 |
| ADC | 12-bit, up to 16 channels |
| DAC | 8-bit, 2 channels |
| Timers | 4 x 16-bit / 2 x 8-bit |
| PWM | 2 ECCP + 3 CCP modules |
| Communication | 2x SPI, 2x I2C, 2x UART, USB 2.0 FS, CAN 2.0B |
| CTMU | Charge Time Measurement Unit (capacitive touch) |
| Comparators | 3 |
| Nhiệt độ hoạt động | -40C to +85C (Industrial, 'I' suffix) |
| Hộp | 64-pin QFN (MR) with exposed pad, 9x9 mm |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (per JEDEC J-STD-020) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18F66K22-I/MRRSL
| Chân 1 | RE3/MCLR — Digital I/O / Master Clear (reset) input |
| Chân 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| Chân 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| Chân 4 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| Chân 5 | RA3/AN3 — PORTA bit 3 / Analog input 3 / VREF+ |
| Chân 6 | RA4/AN4 — PORTA bit 4 / Analog input 4 |
| Chân 7 | RA5/AN5 — PORTA bit 5 / Analog input 5 |
| Chân 8 | RA6 — PORTA bit 6 |
| Chân 9 | RA7 — PORTA bit 7 |
| Chân 10 | VSS — Ground reference |
| Chân 11 | VDD — Positive supply voltage |
| Chân 12 | RB0/AN12 — PORTB bit 0 / Analog input 12 |
| Chân 13 | RB1/AN10 — PORTB bit 1 / Analog input 10 |
| Chân 14 | RB2/AN8 — PORTB bit 2 / Analog input 8 |
| Chân 15 | RB3/AN9 — PORTB bit 3 / Analog input 9 |
| Chân 16 | RB4 — PORTB bit 4 |
| Chân 17 | RB5 — PORTB bit 5 |
| Chân 18 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 19 | RB7/PGD — PORTB bit 7 / ICSP data |
| Chân 20 | VSS — Ground reference |
| Chân 21 | VDD — Positive supply voltage |
| Chân 22 | RC0 — PORTC bit 0 |
| Chân 23 | RC1 — PORTC bit 1 |
| Chân 24 | RC2 — PORTC bit 2 |
| Chân 25 | RC3 — PORTC bit 3 |
| Chân 26 | RC4 — PORTC bit 4 |
| Chân 27 | RC5 — PORTC bit 5 |
| Chân 28 | RC6 — PORTC bit 6 / TX |
| Chân 29 | RC7 — PORTC bit 7 / RX |
| Chân 30 | VSS — Ground reference |
| Chân 31 | VDD — Positive supply voltage |
| Chân 32 | RD0 — PORTD bit 0 |
| Chân 33 | RD1 — PORTD bit 1 |
| Chân 34 | RD2 — PORTD bit 2 |
| Chân 35 | RD3 — PORTD bit 3 |
| Chân 36 | RD4 — PORTD bit 4 |
| Chân 37 | RD5 — PORTD bit 5 |
| Chân 38 | RD6 — PORTD bit 6 |
| Chân 39 | RD7 — PORTD bit 7 |
| Chân 40 | VSS — Ground reference |
| Chân 41 | RE0/AN5 — PORTE bit 0 / Analog input 5 |
| Chân 42 | RE1/AN6 — PORTE bit 1 / Analog input 6 |
| Chân 43 | RE2/AN7 — PORTE bit 2 / Analog input 7 |
| Chân 44 | VSS — Ground reference |
| Chân 45 | VDD — Positive supply voltage |
| Chân 46 | RF0 — PORTF bit 0 |
| Chân 47 | RF1 — PORTF bit 1 |
| Chân 48 | RF2 — PORTF bit 2 |
| Chân 49 | RF3 — PORTF bit 3 |
| Chân 50 | RF4 — PORTF bit 4 |
| Chân 51 | RF5 — PORTF bit 5 |
| Chân 52 | RF6 — PORTF bit 6 |
| Chân 53 | RF7 — PORTF bit 7 |
| Chân 54 | RG0 — PORTG bit 0 |
| Chân 55 | RG1 — PORTG bit 1 |
| Chân 56 | RG2 — PORTG bit 2 |
| Chân 57 | RG3 — PORTG bit 3 |
| Chân 58 | RG4 — PORTG bit 4 |
| Chân 59 | RG5 — PORTG bit 5 |
| Chân 60 | VDDCORE — Regulated core supply (decoupling) |
| Chân 61 | ENVREG — Internal voltage regulator enable |
| Chân 62 | VSS — Ground reference |
| Chân 63 | OSC1/CLKIN — Crystal/clock input |
| Chân 64 | OSC2/CLKOUT — Crystal/clock output |
| Chân EP | EP — Exposed thermal pad - connect to VSS |
Ứng dụng tiêu biểu
PIC18F66K22-I/MRRSL phù hợp cho 7 Áp dụngs: Industrial Control and HMI Panels, Capacitive Touch User Interfaces (mTouch / CTMU), USB / CAN Sensor Hubs, Battery-Powered Smart Meters and Energy Harvesting Nodes, Automotive Body and Comfort Modules, Portable Medical and Wellness Devices, Small Appliance Control and Smart Home Edge Nodes.
Industrial Control and HMI Panels
The PIC18F66K22-I/MRRSL fits industrial HMI panels because its 54 I/O pins easily drive 4x4 keypads, character or graphic LCDs, and LED indicators from a single chip. Its 12-bit ADC with up to 16 channels reads analog sensors (pressure, temperature, strain) directly, and the ECCP/CCP modules generate precise PWM signals for motor speed, valve control, or LED dimming. Running at 64 MHz (16 MIPS) it executes control loops fast enough for closed-loop PID on small DC motors, while nanoWatt XLP keeps standby current below 100 nA in panel sleep states. CAN 2.0B peripheral enables native connection to industrial fieldbus gateways without external transceivers on the MCU side.
Được đề xuất
Capacitive Touch User Interfaces (mTouch / CTMU)
The PIC18F66K22-I/MRRSL integrates the Charge Time Measurement Unit (CTMU) which is purpose-built for capacitive touch sensing, supporting buttons, sliders, wheels, and proximity sensors with no external components beyond the copper pads. Its 4 KB RAM and 64 KB Flash comfortably fit Microchip's mTouch library and a UI state machine for up to 32 channels, while 54 I/O allows expansion for RGB LED feedback. Running at 64 MHz, the CTMU scanning loop completes in under 1 ms per channel, enabling low-latency user response. nanoWatt XLP deep-sleep mode keeps battery-powered remote controls below 100 nA when idle, and integrated USB supports firmware updates for touch firmware tuning.
Được đề xuất
USB / CAN Sensor Hubs
The PIC18F66K22-I/MRRSL is an excellent fit for USB-tethered sensor hubs because it integrates both USB 2.0 full-speed and CAN 2.0B on-chip, eliminating the need for an external bridge IC. With 64 KB Flash and 4 KB RAM it runs the Microchip USB stack plus a CAN node library simultaneously, supporting CDC/HID/MSC composite USB device classes. Its 64-pin QFN exposes both D+/D- USB lines and CAN_TX/CAN_RX without pin conflicts, and 54 I/O are more than enough for SPI/I2C sensor aggregation. USB bus-power operation directly from the 5 V VBUS rail simplifies hub power architecture.
Được đề xuất
Battery-Powered Smart Meters and Energy Harvesting Nodes
The PIC18F66K22-I/MRRSL with nanoWatt XLP technology achieves typical sleep current below 100 nA with RTCC running, making it suitable for battery-powered smart electricity, water, and gas meters with 10+ year life on a single primary cell. Its 12-bit ADC accurately samples shunt voltage and current signals from metering front ends, while the 1 KB EEPROM safely stores rolling consumption history and tamper flags. The integrated real-time clock calendar (RTCC) eliminates external RTC chips, and 64 KB Flash supports application firmware plus IEC 62056-21 / DLMS / Modbus metering protocol stacks. Wide 1.8 V-5.5 V supply allows direct operation from solar or thermal energy-harvesting sources.
Được đề xuất
Automotive Body and Comfort Modules
The PIC18F66K22-I/MRRSL is used in non-safety automotive body modules such as seat controllers, mirror adjusters, HVAC blend doors, and ambient lighting, where its 54 I/O drive multiple motors and LEDs. CAN 2.0B allows direct integration into the vehicle CAN bus for body control, while the LIN-capable UART simplifies LIN slave sub-nodes. Its wide 1.8-5.5 V supply tolerates load-dump transients with external TVS protection, and its 64 MHz performance supports motor control loops plus LIN scheduling. For safety-critical applications select the AEC-Q100-qualified PIC18F46K22-E/PT extended-temperature variant instead; for non-safety body modules the standard industrial-temperature part is widely used.
Được đề xuất
Portable Medical and Wellness Devices
The PIC18F66K22-I/MRRSL fits portable medical peripherals such as blood-pressure monitors, pulse oximeters, and handheld diagnostic tools because of its low-power XLP modes and accurate 12-bit ADC for analog sensor readout. Its 64 KB Flash accommodates USB CDC/HID class drivers and Bluetooth/USB command protocols, and 4 KB RAM buffers real-time waveform data. The QFN package enables compact handheld form factors, while the integrated USB permits tethered charging and firmware updates. Note: this part is not IEC 60730/medical-safety qualified; for regulated medical safety functions select a certified PIC18 or PIC24 variant instead.
Được đề xuất
Small Appliance Control and Smart Home Edge Nodes
The PIC18F66K22-I/MRRSL targets smart-home edge nodes and small appliance controls where its 64 KB Flash and 54 I/O drive BLDC/PMSM motors via the ECCP peripheral, read multiple sensor inputs via the 12-bit ADC, and interface with mains-side AC zero-cross detection. Its CTMU supports capacitive touch panels on coffee machines, washing machines, or induction cooktops without mechanical buttons. USB-CAN bridging functionality simplifies integration with home automation gateways, and nanoWalt XLP sleep modes enable <100 nA standby that meets Energy Star appliance limits. Multiple PWM channels drive triac-fired heating elements directly through optocouplers.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F66K22-I/MRRSL — 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 | PIC18F67K22-I/MR | PIC18F65K22-I/MR | PIC18F65K90-I/MR | PIC18F66K22-I/MR | PIC18F66K22-E/MR |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin QFN (MR) | 64-pin QFN (MR) - same | 64-pin QFN (MR) - same | 64-pin QFN (MR) - same | 64-pin QFN (MR) - same | 64-pin QFN (MR) - same |
| Flash Memory | 64 KB | 128 KB | 32 KB | 32 KB | 64 KB | 64 KB |
| RAM | 4 KB | 4 KB | 2 KB | 2 KB | 4 KB | 4 KB |
| CPU Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| I/O Pins | 54 | 54 | 54 | 54 | 54 | 54 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (Extended) |
| USB / CAN | USB 2.0 FS + CAN 2.0B | USB 2.0 FS + CAN 2.0B | USB 2.0 FS + CAN 2.0B | USB 2.0 FS + CAN 2.0B | USB 2.0 FS + CAN 2.0B | USB 2.0 FS + CAN 2.0B |
| Approx Unit Price (qty 1000) | $3.92 | $5.10 | $3.40 | $3.20 | $3.85 | $4.40 |
Bảo phân biệt quan trọng
- Higher Flash density with same QFN footprint (vsPIC18F65K22-I/MR)
- Direct migration path to doubled Flash (vsPIC18F67K22-I/MR)
- Industrial vs Extended temperature option (vsPIC18F66K22-E/MR)
- Same-package TQFP alternative (vsPIC18F66J55-I/PT)
Ghi chú thiết kế
The 64-pin QFN (MR) package has an exposed thermal pad (EP) underneath the IC that MUST be soldered to a continuous ground plane with a grid of thermal vias for both electrical reference and heat dissipation. Without proper EP soldering the MCU can run 15-20C hotter under full I/O switching load, derating maximum CPU speed. Per Microchip's TB040 design note, allocate at least 16 thermal vias (0.3 mm drill, 0.6 mm pitch) between the EP and the bottom ground plane; this is a common source of field returns in QFN designs.
Place a 100 nF decoupling capacitor on each VDD pin pair (1-2 mm trace length), and a single bulk 10 uF tantalum or ceramic capacitor on the main VDD rail near the IC. The MR package has multiple VDD/VSS pin pairs (10, 11, 20, 21, 30, 31, 40, 44, 45, 62) each requiring local decoupling; per the family datasheet's supply architecture section, omitting decoupling on internal pins during USB high-speed operation can cause VDD droop and USB enumeration failures.
Do not exceed 64 MHz by overriding the configuration bits - the PIC18F66K22's internal oscillator is rated for 64 MHz only when the PLL is enabled and HFINTOSC is selected correctly; using an external crystal above 20 MHz without PLL multiplication can drive the CPU beyond spec. Also ensure the ENVREG pin is connected to a 1-10 uF capacitor to enable the internal core voltage regulator - leaving it floating prevents the core from powering up and silently fails to start.
Route the USB D+/D- traces as a 90-ohm differential pair with length matching under 2 mm mismatch, and keep them away from switching signals like PWM outputs and the CTMU charge pump. Per Microchip AN_1009 USB hardware design guide, place the 15 kohm pull-down resistor on D- (for low-speed detect) or D+ (for full-speed) at the MCU side, never on the connector side, to meet USB-IF compliance testing. Total trace length should be under 50 mm for both signals to avoid signal-integrity issues.
When using the CTMU for capacitive touch, route the touch channels with minimum 2 mm spacing from high-frequency switching traces and keep ground return paths short. The CTMU's 0.55 uA reference current sources are sensitive to substrate noise; per Microchip AN1250, ground the touch shield patterns with a 10 Mohm resistor to GND for proximity sensors. For sliders, use interleaved triangular pads with 0.5 mm pitch rather than rectangular pads to achieve smoother position resolution.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product declarations. Not AEC-Q100 qualified - choose PIC18F66K22-E/MR extended-temperature variant for automotive applications, or AEC-Q100 qualified PIC18 K-series derivatives for safety-critical deployments. Lead-free and halogen-free per Microchip environmental certification.
