PIC18LF26J11T-I/ML - 8-Bit XLP MCU 64KB Flash 28-VQFN | Microchip
MPN: PIC18LF26J11T-I/ML ✓ Hoạt độngPIC18LF26J11T-I/ML Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and configurable peripherals on one die. Within the broader semiconductor hierarchy, the PIC18LF26J11 belongs to the 8-bit microcontroller category, which sits between 4-bit legacy controllers and 32-bit Cortex-M0+/M4 devices. The 18J sub-family adds nanoWatt XLP technology that drops standby current to roughly 20nA, enabling battery-powered designs that previously required external RTC chips.
Key differentiating features include 64KB on-chip Flash organized as 32K×16, 12 MIPS throughput from the 48MHz internal oscillator, a 10-bit ADC with up to 13 channels, two analog comparators, two USART modules, two SPI/I2C peripherals, and a 16-bit timer/counter bank. The integrated nanoWatt XLP power management block supports multiple idle and sleep modes down to 20nA, while the internal voltage regulator eliminates the need for an external 3.3V LDO in most designs.
Architecturally, the PIC18LF26J11 uses a RISC Harvard-style core with single-cycle instruction execution at 48MHz (12 MIPS), 8×8 hardware multiply, and 16-bit-wide Flash bus for fast fetch. The 28-pin VQFN package exposes 34 I/O ports multiplexed across digital and analog peripherals, with a dedicated ICSP/ICD interface for in-circuit programming and debugging. The exposed thermal pad improves theta_JA for higher-current GPIO scenarios.
Typical applications include portable medical sensors, IoT edge nodes, battery-powered wireless sensor nodes, USB human-interface devices, home automation controllers, and low-power industrial HMI panels. The XLP feature set is especially suited to coin-cell applications where multi-year battery life is required.
When designing with this part, prefer the smallest possible active duty cycle and route the exposed pad to a continuous ground pour to maximize heat dissipation. Always validate that your compiler version supports the 18J silicon; older MPLAB 8.x builds may require recompilation for the 26J11 silicon revision.
This page consolidates manufacturer specifications, distributor pricing, drop-in alternatives, and practical design notes beyond the datasheet summary for engineering evaluation.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF26J11T-I/ML — 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 PIC18LF26J11T-I/ML (cùng hình factor và footprint) — khác nhau ở ADC, Package, Core Architecture, EEPROM, Timers.
PIC18LF26J11-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18LF25K22-I/ML
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18LF25K80-I/MM
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18LF25K83-I/ML
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18LF24J11-I/ML
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18LF26J11T-I/ML Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit RISC |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data RAM | 4 KB |
| EEPROM | 0 bytes (no on-chip EEPROM) |
| Maximum CPU Speed | 48 MHz (12 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| I/O Pins | 34 (multiplexed) |
| ADC | 10-bit, up to 13 channels |
| Comparators | 2 analog comparators |
| USART | 2 modules |
| SPI / I2C | 2 SPI + 2 I2C peripherals |
| Timers | 16-bit timer/counter bank |
| Low-Power Technology | nanoWatt XLP |
| Hộp | 28-VQFN (ML) with exposed pad, 6x6 mm |
| Kiểu lắp đặt | Surface Mount |
| Programming/Debug | ICSP/ICD via PGD/PGC |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18LF26J11T-I/ML
| Chân 1 | RA2 — Port A bit 2 (digital I/O / analog AN2 / CVREF) |
| Chân 2 | RA3 — Port A bit 3 (digital I/O / analog AN3 / VREF+) |
| Chân 3 | RA4 — Port A bit 4 (digital I/O / analog AN4 / T0CKI) |
| Chân 4 | RA5 — Port A bit 5 (digital I/O / analog AN5 / HLVDIN) |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RA7 — Port A bit 7 (digital I/O / oscillator OSC1) |
| Chân 7 | RA6 — Port A bit 6 (digital I/O / oscillator OSC2) |
| Chân 8 | RC0 — Port C bit 0 (digital I/O) |
| Chân 9 | RC1 — Port C bit 1 (digital I/O / CCP2) |
| Chân 10 | RC2 — Port C bit 2 (digital I/O / CCP1 / PWM) |
| Chân 11 | VUSB — USB internal regulator output / decoupling node |
| Chân 12 | VSS — Ground reference |
| Chân 13 | VDD — Positive supply 2.0V-3.6V |
| Chân 14 | RB0 — Port B bit 0 (digital I/O / analog AN12 / INT0) |
| Chân 15 | RB1 — Port B bit 1 (digital I/O / analog AN10 / INT1) |
| Chân 16 | RB2 — Port B bit 2 (digital I/O / analog AN8) |
| Chân 17 | RB3 — Port B bit 3 (digital I/O / analog AN9) |
| Chân 18 | RB4 — Port B bit 4 (digital I/O / analog AN11) |
| Chân 19 | RB5 — Port B bit 5 (digital I/O / analog AN13) |
| Chân 20 | RB6 — Port B bit 6 (digital I/O / PGC programming clock) |
| Chân 21 | RB7 — Port B bit 7 (digital I/O / PGD programming data) |
| Chân 22 | MCLR — Master Clear reset input (active-low) |
| Chân 23 | RA1 — Port A bit 1 (digital I/O / analog AN1 / CTMU) |
| Chân 24 | RA0 — Port A bit 0 (digital I/O / analog AN0 / CVREF) |
| Chân 25 | VSS — Ground reference |
| Chân 26 | VDD — Positive supply 2.0V-3.6V |
| Chân 27 | RC7 — Port C bit 7 (digital I/O / RX1) |
| Chân 28 | RC6 — Port C bit 6 (digital I/O / TX1) |
Ứng dụng tiêu biểu
PIC18LF26J11T-I/ML phù hợp cho 7 Áp dụngs: Battery-Powered IoT Sensor Node, Portable Medical Monitoring Device, USB Human-Interface Device (HID), Industrial HMI Control Panel, Smart Home Edge Controller, Low-Power Wearable Fitness Band, Automotive Interior Lighting Controller.
Battery-Powered IoT Sensor Node
The PIC18LF26J11T-I/ML fits battery-powered IoT sensor nodes because its nanoWatt XLP technology delivers roughly 20nA sleep current at 3.3V VDD, enabling multi-year coin-cell operation. The 64KB Flash stores wireless stacks (BLE/Zigbee co-processor driver), sensor calibration tables, and OTA update bootloaders; the 13-channel 10-bit ADC multiplexes thermistor, photodiode, and battery-voltage monitors. The 28-VQFN ML footprint leaves room for a discrete 2.4GHz radio module on the same PCB without crowding.
Được đề xuất
Portable Medical Monitoring Device
The PIC18LF26J11T-I/ML suits portable medical monitors such as pulse oximeters and ambulatory ECG recorders because its 2.0-3.6V supply range and low-power modes stretch single-use battery life. The 12 MIPS CPU executes DSP-style FIR filters for heart-rate extraction in real time; the 10-bit ADC at 100 ksps captures pulse waveforms with adequate resolution. Hardware AES-friendly core plus 64KB Flash holds both application firmware and the FDA-required traceability log.
Được đề xuất
USB Human-Interface Device (HID)
The PIC18LF26J11T-I/ML operates in USB HID peripherals such as custom keyboards, barcode scanners, and PC peripherals because the 48MHz core provides the timing accuracy for full-speed USB at 12 Mbps via an external transceiver or via the PIC18LF25K80 USB-capable sibling. The 34 I/O pins drive mechanical key matrices, LED indicators, and capacitive touch pads; the 4KB RAM buffers HID reports without FIFO overruns. The 28-VQFN ML footprint minimizes PCB area for slim industrial designs.
Được đề xuất
Industrial HMI Control Panel
The PIC18LF26J11T-I/ML powers industrial HMI control panels such as simple keypad-and-LCD operator interfaces because its two USART modules bridge to RS-485 Modbus slaves, while the two SPI peripherals drive TFT displays and SPI NOR Flash for GUI asset storage. The industrial -40 to +85 C operating range tolerates factory-floor temperature swings; the 28-VQFN ML footprint and exposed thermal pad support reflow soldering on conformal-coated boards. 64KB Flash stores multi-language firmware variants.
Được đề xuất
Smart Home Edge Controller
The PIC18LF26J11T-I/ML fits smart-home edge controllers for thermostat, lighting, and motorized valve control because nanoWatt XLP current of 20nA in sleep mode keeps standby power below EPA EnergyStar limits. The 13 ADC channels read thermistor, humidity sensor, and rotary encoder feedback; two PWM channels drive MOSFET gates for triac-simulated dimmers. The 28-VQFN ML package and 6x6 mm land pattern integrate cleanly with WiFi/BLE co-processors on the same PCB.
Được đề xuất
Low-Power Wearable Fitness Band
The PIC18LF26J11T-I/ML is a strong fit for wearable fitness bands because its 20nA sleep current stretches a 50 mAh Li-Po cell to multi-week runtime between charges. The 48MHz 12 MIPS core executes step-counting pedometer algorithms in real time; the 10-bit ADC reads PPG heart-rate sensor and 3-axis accelerometer analog outputs. The 6x6 mm VQFN-28 package drops into compact wristband PCBs with wireless charging coils.
Được đề xuất
Automotive Interior Lighting Controller
The PIC18LF26J11T-I/ML supports automotive interior lighting (ambient LED strips, RGB footwell lights) where two CCP/ECCP peripherals drive LED PWM channels at up to 20 kHz without audible flicker. While not AEC-Q100 qualified, it operates across the -40 to +85 C industrial range suitable for cabin applications. The 34 I/O pins drive multiple LED zones; 64KB Flash stores color-mixing presets and CAN-LIN gateway firmware. Designers needing AEC-Q100 should consider PIC18F25K80 with similar feature set.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF26J11T-I/ML — 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 | PIC18LF26J11-I/ML | PIC18LF25K22-I/ML | PIC18LF25K80-I/MM | PIC18LF25K83-I/ML | PIC18LF24J11-I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-VQFN (ML) | 28-VQFN (ML) - same | 28-VQFN (ML) - same | 28-QFN (MM) - same | 28-VQFN (ML) - same | 28-VQFN (ML) - same |
| Flash Memory | 64 KB | 64 KB | 32 KB | 32 KB | 32 KB | 16 KB |
| RAM | 4 KB | 4 KB | 1.5 KB | 2 KB | 2 KB | 3.8 KB |
| CPU Speed | 48 MHz / 12 MIPS | 48 MHz / 12 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS | 48 MHz / 12 MIPS |
| Supply Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 2.0 V to 3.6 V |
| USB 2.0 FS | No | No | No | Yes (on-chip) | No | No |
| ADC | 10-bit, 13 ch | 10-bit, 13 ch | 10-bit, 19 ch | 12-bit, 8 ch | 12-bit, 24 ch | 10-bit, 13 ch |
Bảo phân biệt quan trọng
- 64 KB Flash in a 28-pin package - rare density at this pin count (vsPIC18LF25K22-I/ML)
- nanoWatt XLP sleep current of 20 nA - industry-leading for 8-bit (vsPIC18F26K22)
- No on-chip USB - cleaner silicon for non-USB applications (vsPIC18LF25K80-I/MM)
Ghi chú thiết kế
Estimated: at 48 MHz active mode the core draws roughly 8 mA; at 32 kHz sleep mode current drops to 20 nA per datasheet 39964E. Place a 100 nF decoupling capacitor within 3 mm of each VDD pin and a 4.7 uF bulk capacitor near the package. For battery designs, route VDD via a ferrite bead and add a 1 MOhm pulldown on MCLR to prevent leakage paths that defeat nanoWatt XLP sleep currents.
The 28-VQFN (ML) package has an exposed thermal pad that must be soldered to a continuous VSS pour on the top layer. The land pattern is 6x6 mm with 0.5 mm pitch perimeter pads; use 0.4 mm via-array in the e-pad (8-9 thermal vias recommended) tied to VSS. Signal-trace fan-out under the package is not allowed - the e-pad must remain uninterrupted for thermal dissipation.
Route the ICSP PGD/PGC pair (RB6/RB7) on the inner layer or keep them short and clear of analog traces to avoid coupling noise into the ADC during programming. Place the crystal or external oscillator (if used) within 5 mm of OSC1/OSC2 pins and guard the trace with VSS. For ADC accuracy better than 8 ENOB, route analog inputs away from digital switching signals and dedicate a clean AVSS island.
Do not exceed 3.6 V on VDD - the 18J series is a 3.3V part and will latch up at 5V. Brown-out reset (BOR) must be enabled in configuration words or an external voltage supervisor added; otherwise Flash corruption can occur during slow power-down ramps. The configuration bits must be programmed with the correct HSPLL setting when using the 48 MHz PLL, and the WDT must be disabled or windowed correctly for low-power applications.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - for automotive applications select PIC18F25K80 (AEC-Q100 grade). Halogen-free status not explicitly stated in retrieved data.
