PIC18LF67K40T-I/MR - 8-bit 64MHz 128KB Flash MCU 64-VQFN | Microchip
MPN: PIC18LF67K40T-I/MR ✓ Hoạt độngPIC18LF67K40T-I/MR Tóm tắt
A PIC microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash/ROM), working memory (RAM), and configurable peripheral blocks around the same silicon die. The PIC18 family is Microchip's mid-range 8-bit architecture, sitting above the PIC16 family and below the dsPIC/PIC24 16-bit families in the 8-bit portfolio. The LF sub-family adds a low-voltage core that operates down to 1.8 V, while the K40 generation adds CIPs that offload timing-critical tasks from the CPU. Within the broader taxonomy, this part belongs to: microcontroller -> embedded controller -> semiconductor IC.
Key differentiating features include Core Independent Peripherals (CWG, WWDT, CRC, DMA), a 10-bit ADC with computation, an on-chip 32 kHz oscillator for low-power RTC operation, and up to 60 digital I/O pins. The wide 1.8 V to 3.6 V operating voltage and ultra-low-power sleep currents in the nanoamp range enable multi-year battery life in energy-harvesting designs.
Technically, the device uses an enhanced mid-range 8-bit core with a hardware multiply, 31-level stack, and linear program memory addressing. Its 5V-tolerant digital inputs let it interface with 5V sensors in 3.3V systems, and the integrated Direct Memory Access (DMA) engine moves data between peripherals and RAM without CPU intervention, lowering active-mode current and freeing the core for application logic.
Typical applications include low-power IoT sensor nodes, industrial control HMI panels, battery-powered medical handheld devices, automotive body ECUs (with appropriate AEC-Q100 variant), consumer appliance controllers, and USB-CDC/HID peripherals. The 60-pin I/O budget and 128 KB Flash fit mid-tier products needing room for application stacks, USB stacks, or graphics libraries.
When designing with this part, ensure the VDDCORE pin is bypassed with a 10 uF + 0.1 uF capacitor pair as recommended in the datasheet, and pay attention to the 64-pin VQFN thermal pad layout - the exposed pad must be soldered to a 9x9 mm copper island with thermal vias to meet the 31.4 C/W junction-to-ambient rating.
This page synthesizes distributor pricing, drop-in alternatives from the same PIC18F/LF67K40 family, and practical design notes not consolidated in the manufacturer datasheet, giving procurement and design engineers a single decision-making reference.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF67K40T-I/MR — 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 PIC18LF67K40T-I/MR (cùng hình factor và footprint) — khác nhau ở Core Architecture, Package, Maximum CPU Speed, ADC, EEPROM.
PIC18F67K40T-I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF67K40-I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF66K40T-I/MR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F67K40-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF67K40T-I/MR Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC18 (enhanced mid-range 8-bit) |
| Program Memory (Flash) | 128 KB (64K x 16 words) |
| EEPROM | 1 KB |
| Data RAM | 3.5 KB |
| Maximum CPU Speed | 64 MHz (16 MIPS) |
| Operating Voltage | 1.8 V to 3.6 V |
| I/O Pins | 60 |
| Hộp | 64-VQFN (MR) 9x9 mm with exposed thermal pad |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Core Independent Peripherals | CWG, WWDT, CRC, DMA, NCO |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Hướng dẫn cấu hình chân PIC18LF67K40T-I/MR 64-vqfn (mr) 9x9 mm with exposed thermal pad
Cấu hình chân cho PIC18LF67K40T-I/MR (64-vqfn (mr) 9x9 mm with exposed thermal pad gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho PIC18LF67K40T-I/MR.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
PIC18LF67K40T-I/MR phù hợp cho 6 Áp dụngs: Industrial Control HMI Panels, Battery-Powered IoT Sensor Nodes, Consumer Appliance Controllers, Medical Handheld Devices, USB-CDC/HID Peripheral Bridges, Automotive Body ECUs (with Q-Grade variant).
Industrial Control HMI Panels
The PIC18LF67K40T-I/MR fits HMI panels because its 60-pin I/O budget easily drives multiple push-buttons, LED indicators, character LCDs, and segment displays in parallel, while the 128 KB Flash holds full menus and configuration tables. The 10-bit ADC reads potentiometers and analog sensors at 100 ksps without DMA, freeing the CPU to handle debouncing and protocol stacks. The 64-VQFN (9x9 mm) footprint fits behind the LCD glass, and the 1.8-3.6 V range accepts direct 3.3 V from an isolated DC-DC. Its Core Independent Peripherals (CWG, WWDT, CRC) handle keypad scanning and watchdog refresh in hardware, offloading a key MCU bus burden.
Được đề xuất
Battery-Powered IoT Sensor Nodes
The PIC18LF67K40T-I/MR is well suited to battery-powered IoT sensor nodes because of its nanoWatt XLP sleep currents below 50 nA with RTC running, allowing multi-year coin-cell life on a single CR2032. The 64-pin VQFN packs DMA, 10-bit ADC, and 60 GPIO in a small 9x9 mm area, leaving most of the PCB for radio modules and battery. The 1.8 V minimum supports direct connection to two alkaline cells down to their end-of-discharge voltage. The on-chip CRC and WWDT CIP blocks guarantee data integrity without waking the CPU. The 128 KB Flash can hold LoRaWAN stacks, BLE driver libraries, or proprietary mesh protocol stacks.
Được đề xuất
Consumer Appliance Controllers
The PIC18LF67K40T-I/MR drives consumer appliance controllers such as washing machines, refrigerators, and small kitchen appliances because it integrates 5V-tolerant digital inputs (rare on a 3.3 V MCU), enabling direct connection to legacy 5V triac optocouplers and zero-cross detectors. The 64 MHz core runs real-time control loops and 7-segment multiplexed displays without external logic. Its 60 I/O pins support multiple keypad rows, relay banks, and triac drives. The 1.8-3.6 V supply range plus internal 32 kHz oscillator enables low-cost non-battery appliances with a single 3.3 V LDO. Core Independent Peripherals handle zero-cross timing and PWM dimming without CPU overhead.
Được đề xuất
Medical Handheld Devices
The PIC18LF67K40T-I/MR fits medical handheld devices such as glucose meters, infusion pump controllers, and pulse oximeters because of its low power draw during sleep, enabling longer battery life in portable diagnostic equipment. The 128 KB Flash accommodates calibration tables, device firmware, and bootloader storage for FDA-compliant updates. The 64-VQFN package fits tight handheld enclosures. The CIP DMA and CRC engines guarantee deterministic timing for safety-critical signal sampling. The 1.8-3.6 V range supports direct Li-ion battery operation with no external DC-DC needed. Designers should pair with the PIC18F variant only if a 5 V sensor interface is required.
Được đề xuất
USB-CDC/HID Peripheral Bridges
The PIC18LF67K40T-I/MR works as a USB-CDC/HID peripheral bridge in mixed-rail designs when paired with an external USB transceiver or used for the application layer while a smaller PIC handles the USB stack. Designers can use this MCU as the user-interface controller while a separate PIC18F14K50 or PIC18F27J53 handles full-speed USB connectivity. The 128 KB Flash accommodates rich HID descriptor parsing and command processing. The 64-VQFN footprint fits beside larger connectors. Core Independent Peripherals handle button debouncing and LED timing in hardware, freeing the CPU for USB enumeration logic and class-level handlers.
Được đề xuất
Automotive Body ECUs (with Q-Grade variant)
The PIC18LF67K40T-I/MR supports automotive body ECU concepts such as lighting controllers, seat controllers, and HVAC modules where the standard industrial grade is sufficient. For AEC-Q100 designs, designers should select the PIC18F67K40-I/PT (AEC-Q100 Grade 1) variant. The 60 I/O pins drive multiple FET bridges for seat motors or LED headlamp matrices. The 64 MHz core runs LIN, CAN, or CAN-FD stacks via external transceivers. The 1.8-3.6 V LF core suits modern 12 V battery systems regulated down to 3.3 V. Designers must use the Q-grade sibling part for safety-relevant modules.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF67K40T-I/MR — 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 | PIC18F67K40T-I/MR | PIC18LF67K40-I/MR | PIC18LF66K40T-I/MR |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-VQFN (MR) 9x9 mm | 64-VQFN (MR) 9x9 mm - same | 64-VQFN (MR) 9x9 mm - same | 64-VQFN (MR) 9x9 mm - same |
| Operating Voltage | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Flash | 128 KB | 128 KB | 128 KB | 64 KB |
| RAM | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB |
| Maximum Clock | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| I/O Pins | 60 | 60 | 60 | 60 |
| AEC-Q100 Qualified | No (industrial grade) | No (industrial grade) | No (industrial grade) | No (industrial grade) |
Bảo phân biệt quan trọng
- Lowest minimum operating voltage in the K40 family (vsPIC18F67K40T-I/MR)
- Double the Flash of the lower K40 variant (vsPIC18LF66K40T-I/MR)
- Same die across LF and F voltage variants (vsPIC18LF66K40T-I/MR)
Ghi chú thiết kế
The 64-pin VQFN has a 9x9 mm exposed thermal pad (EP) on the underside. This pad MUST be soldered to a 9x9 mm copper island with at least 9 thermal vias (1.2 mm pitch) to ground to meet the 31.4 C/W theta_JA rating. Without a properly soldered thermal pad, the device will overheat in production. Place input and output decoupling capacitors as close to the VDD/VSS pin pairs as possible, with a 10 uF bulk + 0.1 uF ceramic pair on the main VDD rail.
The PIC18LF67K40T-I/MR includes a built-in brown-out reset (BOR) selectable at 1.8 V, 2.0 V, 2.7 V, or 3.0 V via configuration bits. Choose the BOR threshold slightly above your minimum supply voltage to prevent code runaway during brown-out events. The internal voltage regulator (LDO) requires a 10 uF + 0.1 uF low-ESR ceramic on VDDCORE for stability. Estimated: at 64 MHz full active and 3.3 V supply, current draw is approximately 12 mA - well within USB bus power budget if used as a self-powered device.
A common pitfall is using a PIC18F (5 V) part in a 3.3 V-only system or vice-versa. Verify the LF vs F suffix matches your supply rail - LF (PIC18LF) operates 1.8-3.6 V; F (PIC18F) operates 2.3-5.5 V. Also, the 64-VQFN package cannot accept hand-soldered rework without a hot plate or rework station; design rework procedures around this constraint for prototypes. The ICSP programming pins (PGED/PGEC) must be accessible for production programming, not buried under a no-connect pin header.
Thông tin tuân thủ
Industrial grade (-40 C to +85 C). Not AEC-Q100 qualified - for automotive use the PIC18F67K40-I/PT Q-grade variant. RoHS and REACH compliant per Microchip product page.
