PIC18LF26J11T-I/SO - 64KB Flash 8-bit MCU, nanoWatt XLP | Microchip
部品番号: PIC18LF26J11T-I/SO ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.05 | $30.50 |
| 100 | $2.55 | $255.00 |
| 500 | $2.2 | $1,100.00 |
| 1,000 | $1.95 | $1,950.00 |
PIC18LF26J11T-I/SO 概要
An 8-bit PIC microcontroller belongs to the broader family of RISC microcontrollers (Reduced Instruction Set Computer) - integrated circuits that fetch, decode, and execute simplified instruction sets in typically one clock cycle. The PIC18F/LF sub-family adds a 16-bit instruction word on a modified Harvard architecture, where program and data buses are separate, allowing simultaneous instruction fetch plus data access. Within this hierarchy, PIC18LF26J11 sits at the boundary between full-performance (PIC18F) and low-power (PIC18LF) variants, and the J-suffix indicates the use of nanoWatt XLP technology and a segmented flash architecture originally derived from the PIC18F46J11.
Key features include 64KB (32K x 16) of flash program memory, 4 KB SRAM data memory, 34 digital I/O pins shared with peripherals, a 10-bit analog-to-digital converter, multiple serial interfaces (I2C, SPI, USART with LIN support), and two analog comparators. The RTCC block supports time-of-day with an external 32 kHz crystal, useful for time-stamped data logging on battery-powered systems.
NanoWatt XLP extreme-low-power technology delivers sleep currents in the microampere range, allowing several years of operation from coin cells. The voltage regulator of the LF J-series is internal, supporting the 2.0 V to 5.5 V (F: 2.0 V to 3.6 V, LF: 4.2 V to 5.5 V) operating ranges documented for the family. Designers should consult the data sheet for voltage-mode selection when migrating between F and LF variants.
Typical applications include portable medical instruments, environmental sensor nodes with time-stamped data logging, HVAC controls, USB device controllers (with PIC18 USB variants), industrial control loops, and automotive body modules. The wide SOIC-28 footprint eases hand-soldering for prototype and rework, while the industrial temperature range (-40 C to +85 C) supports most non-automotive deployments.
When designing with this device, ensure the supply voltage stays within 4.2 V to 5.5 V. Decouple VDD with 100 nF plus 10 uF bulk capacitors placed close to the pins, and consider adding a ferrite bead for noise-sensitive ADC channels. Use the ICD 3 or PICKit 3 for in-circuit programming via the ICSP interface.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
ドロップイン代替品: PIC18LF26J11T-I/SO — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: PIC18LF26J11T-I/SO （同一形状・フットプリント） — 相違点: Package, I/O Pins, Operating Temperature, ADC, MSL Level.
クイック比較ツール — 並列比較する代替部品を選択:
PIC18LF24J11T-I/SO
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$1.95 / 個
データシートを見る →PIC18LF25J11T-I/SO
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$2.31 / 個
データシートを見る →PIC18F26J11T-I/SO
✅ ドロップイン✓ 在庫あり
$3.18 / 個
データシートを見る →PIC18LF26J11-I/SO
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$2.46 / 個
データシートを見る →PIC18LF26J11T-I/SO 最大定格＆電気的特性
| Architecture | PIC18 8-bit RISC, modified Harvard |
| Flash Program Memory | 64 KB (32K x 16) |
| SRAM Data Memory | 4 KB |
| Maximum CPU Speed | 12 MIPS at 48 MHz internal clock |
| Operating Voltage (LF) | 4.2 V to 5.5 V |
| I/O Pins | 34 |
| ADC | 10-bit |
| Comparators | 2 analog comparators |
| Timers | Multiple 8-bit and 16-bit timers |
| RTCC | Yes, with separate 32 kHz crystal |
| Communication Interfaces | I2C, SPI, USART (LIN support) |
| パッケージ | 28-pin SOIC (0.295 in, 7.50 mm width) |
| 動作温度 | -40 C to +85 C (Industrial) |
| Low-Power Technology | nanoWatt XLP |
| ICSP Programming | Yes (In-Circuit Serial Programming) |
PIC18LF26J11T-I/SO ピン構成
| ピン 1 | MCLR/RE3 — Master Clear reset input / Port E bit 3 |
| ピン 2 | RA0 — Port A bit 0 / analog input |
| ピン 3 | RA1 — Port A bit 1 / analog input |
| ピン 4 | RA2 — Port A bit 2 / analog input |
| ピン 5 | RA3 — Port A bit 3 / analog input |
| ピン 6 | RA4 — Port A bit 4 |
| ピン 7 | RA5 — Port A bit 5 |
| ピン 8 | VSS — Ground reference |
| ピン 9 | OSC1 — Crystal oscillator input or external clock |
| ピン 10 | OSC2 — Crystal oscillator output |
| ピン 11 | RC0 — Port C bit 0 / PWM output |
| ピン 12 | RC1 — Port C bit 1 / PWM output |
| ピン 13 | RC2 — Port C bit 2 / PWM output |
| ピン 14 | RC3 — Port C bit 3 / SCL1 (I2C) / SPI clock |
| ピン 15 | RC4 — Port C bit 4 / SDA1 (I2C) / SPI data input |
| ピン 16 | RC5 — Port C bit 5 |
| ピン 17 | RC6 — Port C bit 6 / TX1 (USART) / SPI data output |
| ピン 18 | RC7 — Port C bit 7 / RX1 (USART) |
| ピン 19 | VSS — Ground reference |
| ピン 20 | VDD — Positive supply voltage (4.2V-5.5V for LF) |
| ピン 21 | RB0 — Port B bit 0 / external interrupt |
| ピン 22 | RB1 — Port B bit 1 |
| ピン 23 | RB2 — Port B bit 2 |
| ピン 24 | RB3 — Port B bit 3 / PGM (ICSP) |
| ピン 25 | RB4 — Port B bit 4 |
| ピン 26 | RB5 — Port B bit 5 / PGC (ICSP clock) |
| ピン 27 | RB6 — Port B bit 6 / PGD (ICSP data) |
| ピン 28 | RB7 — Port B bit 7 |
主な用途
PIC18LF26J11T-I/SO の用途: 6 件s: Industrial Sensor Data Logging, HVAC and Building Control, Portable Medical Instrumentation, Consumer Appliance Control, Automotive Body and Interior Modules, Educational and Hobby Electronics.
Industrial Sensor Data Logging
The PIC18LF26J11T-I/SO fits industrial sensor data loggers that need 5 V operation, time-stamped samples, and long battery life. The 64 KB Flash stores weeks of measurements plus configuration tables, while the 10-bit ADC directly digitizes 4-20 mA loop signals through a sense resistor. The RTCC with 32 kHz crystal timestamps each sample to within seconds over multi-year deployments. NanoWatt XLP sleep current under 1 uA between samples allows the logging node to run from two AA cells for years. Recommend using PIC18 Explorer development board for prototyping and the MPLAB Code Configurator to generate ADC and RTCC drivers.
おすすめ
HVAC and Building Control
Building automation controllers use the PIC18LF26J11T-I/SO for fan-speed regulation, damper control, and zone temperature readouts. The 5 V tolerant I/O directly interfaces with 24 VAC-derived digital signals after rectification, while the PWM outputs drive TRIAC gates without level translation. The 64 KB code space accommodates PID control loops, Modbus stacks, and configuration menus. Its wide -40 C to +85 C industrial range handles unconditioned mechanical rooms, and the SOIC-28 footprint supports hand-rework during field service. Recommend implementing a watchdog timer and brown-out reset for unattended equipment uptime.
おすすめ
Portable Medical Instrumentation
Portable medical devices choose the PIC18LF26J11T-I/SO for its low-power XLP modes and 5 V analog signal chain compatibility. The 10-bit ADC reads thermistor bridges or pulse-oximeter photodiode currents, while nanoWatt XLP sleep extends battery life between measurements. The RTCC schedules dosing reminders or sample acquisitions without CPU intervention. The 28-SOIC's wider body eases hand-prototype and rework for low-volume medical device production. Note: medical device qualification requires IEC 60601 compliance which is the integrator's responsibility, not the MCU's.
おすすめ
Consumer Appliance Control
Washing machines, dishwashers, and coffee makers rely on the PIC18LF26J11T-I/SO for user-interface control, motor PWM, and sensor feedback. The 5 V direct operation interfaces with 5 V LED and button matrix without translation, while the multiple timer modules generate PWM for variable-speed drives. The 64 KB Flash stores multilingual UI strings and diagnostic logs. Wide SOIC-28 footprint reduces assembly defects in high-volume consumer lines. Recommend pairing with an opto-isolated TRIAC driver for AC load switching.
おすすめ
Automotive Body and Interior Modules
Body controllers and interior accessory modules use the PIC18LF26J11T-I/SO for window-lift, mirror-adjust, and lighting control (industrial-grade, not AEC-Q100 qualified). The 5 V supply is compatible with regulated automotive body buses (after the 12 V to 5 V LDO). The 34 I/O pins drive multiple motor bridges and read multiple switch inputs. The nanoWatt XLP sleep modes support parked-vehicle quiescent current budgets under 100 uA. For AEC-Q100 qualified PIC18LF alternatives, contact Microchip factory for automotive-validated part numbers.
おすすめ
Educational and Hobby Electronics
Students and makers select the PIC18LF26J11T-I/SO for its breadboard-friendly 28-SOIC footprint (with SOIC-to-DIP adapter boards), 5 V USB-power supply compatibility, and free MPLAB X IDE / XC8 toolchain. Its 8-bit RISC architecture is easier to learn than 32-bit ARM cores, while still offering modern peripherals: ADC, PWM, I2C, SPI, and UART. The 64 KB Flash accommodates real projects like robotics controllers, weather stations, and home automation nodes. Recommend PICKit 3 or MPLAB SNAP for programming and debugging.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: PIC18LF26J11T-I/SO — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | PIC18F26J11T-I/SO | PIC18LF26J11-I/SO | PIC18LF24J11T-I/SO | PIC18LF25J11T-I/SO |
|---|---|---|---|---|---|
| Package | 28-SOIC (0.295 in) | 28-SOIC (0.295 in) - same | 28-SOIC (0.295 in) - same | 28-SOIC (0.295 in) - same | 28-SOIC (0.295 in) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Voltage | 4.2V to 5.5V (LF) | 2.0V to 3.6V (F) | 4.2V to 5.5V (LF) | 4.2V to 5.5V (LF) | 4.2V to 5.5V (LF) |
| Flash Memory | 64 KB | 64 KB | 64 KB | 32 KB | 64 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Max CPU Speed | 12 MIPS / 48 MHz | 12 MIPS / 48 MHz | 12 MIPS / 48 MHz | 12 MIPS / 48 MHz | 12 MIPS / 48 MHz |
| I/O Pins | 34 | 34 | 34 | 34 | 34 |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
主な差別化要因
- 5V native operation in PIC18J-series （vs PIC18F26J11T-I/SO)
- Full 64 KB Flash with 4 KB SRAM （vs PIC18LF24J11T-I/SO)
- nanoWatt XLP deep-sleep under 100 nA （vs Generic 8-bit MCU without XLP)
- Industrial temperature range -40C to +85C （vs Consumer-grade 0C to +70C alternatives)
設計ノート
Decouple the VDD pin with a 100 nF ceramic capacitor placed within 5 mm of the pin, plus a bulk 10 uF aluminum-polymer or tantalum capacitor. The LF (4.2V-5.5V) supply rail must be stable for proper flash programming; add a ferrite bead if the board shares the rail with switching regulators. Use the internal voltage regulator mode for typical designs (LF: regulator off, F: regulator on for 2.0V-3.6V operation per family datasheet).
Place the 28-SOIC land pattern with proper SOIC wide-body (0.295 in) pad dimensions per IPC-7351. Add a ground plane underneath the IC for thermal dissipation and EMI suppression. Route ICSP signals (PGC/PGD) with short, parallel traces and avoid routing near high-speed switching nodes. The RTCC crystal should be placed within 5 mm of SOSC1/SOSC2 pins with a guarded ground ring to minimize stray capacitance.
Estimated: When migrating from PIC18F26J11 to PIC18LF26J11, verify the supply rail is 4.2V-5.5V (LF) vs 2.0V-3.6V (F) — applying 3.3V to LF will cause brown-out or unstable operation. The configuration bits differ between F and LF variants; consult the family datasheet for voltage-mode selection. Don't omit the MCLR pull-up (typically 10 kohm to VDD) or the device will fail to start reliably.
コンプライアンス情報
RoHS and REACH compliant per Microchip product declaration. Industrial-grade (I) operating temperature -40C to +85C, not AEC-Q100 qualified. For automotive-grade PIC18LF J-series, contact Microchip factory for AEC-Q100 valid part numbers.
