PIC18LF25J11-I/SS - 32KB Flash 8-bit nanoWatt XLP MCU | Microchip
부품 번호: PIC18LF25J11-I/SS ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $3.12 | $3.12 |
| 10 | $2.79 | $27.90 |
| 100 | $2.35 | $235.00 |
| 500 | $2.04 | $1,020.00 |
| 1,000 | $1.81 | $1,810.00 |
| 3,000 | $1.52 | $4,560.00 |
PIC18LF25J11-I/SS 개요
A PIC18 microcontroller is a high-performance 8-bit RISC MCU built on Microchip's Harvard architecture with separate program and data buses, designed for deterministic real-time control in cost-sensitive embedded systems. The PIC18 family sits at the top of Microchip's 8-bit portfolio between baseline PIC10/12/16 and 16-bit dsPIC/PIC24 products, and the LF 'J' sub-family adds nanoWatt XLP peripherals such as ultra-low-power wake-up, Real-Time Clock with calendar, and sleep currents below 100 nA in deep-doze modes. This hierarchy matters for engineers evaluating the trade-off between 8-bit simplicity and 32-bit Cortex-M capability, where the PIC18 LF J family uniquely competes on power-per-MHz efficiency for low-duty-cycle IoT nodes.
Key features include 32KB Flash (16K × 16), 4KB SRAM, 256-byte EEPROM, 21 to 34 programmable I/O pins depending on package, an internal 31kHz–8MHz oscillator with PLL to 48MHz, an internal 1.024V voltage reference, and a 10-bit ADC with auto-acquisition. The device supports in-circuit serial programming (ICSP) and In-Circuit Debug (ICD) over two wires via the dedicated PGD/PGC pins.
Typical applications include battery-powered wireless sensor nodes, wearable health monitors, low-power remote controls, energy-harvesting edge devices, and consumer products such as electronic shelf labels, smart thermostats, and portable instrumentation. The wide 2.0V–3.6V supply range supports direct connection to two AA alkaline cells or a single Li-ion / LiFePO4 cell without a boost regulator.
A key design consideration is that this LF variant operates strictly below 3.6V. Designs that need to interface to 5V logic must include level shifters or a separate 5V regulator; the non-LF PIC18F25J11 supports 4.2V–5.5V operation on the same SSOP-28 footprint, allowing the LF part to be a drop-in upgrade when the design moves to lower-voltage supplies.
드롭인 대체품: PIC18LF25J11-I/SS — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: PIC18LF25J11-I/SS (동일 폼 팩터 및 풋프린트) — 차이점: I/O Pins, Operating Temperature, Timers, Program Memory (Flash), Core Architecture.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
PIC18F25J11-I/SS
✅ 드롭인✓ 재고 있음
$1.74 / 개
데이터시트 보기 →PIC18LF25J10-I/SS
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$1.85 / 개
데이터시트 보기 →PIC18LF25J11-I/SS 최대 정격 & 전기적 특성
| Family | PIC18 LF 'J' XLP nanoWatt |
| Core | 8-bit PIC18 RISC |
| Program Memory (Flash) | 32 KB (16K x 16) |
| SRAM | 4 KB |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 48 MHz (12 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| I/O Pins | 21 (SSOP-28) |
| ADC | 10-bit, up to 13 channels |
| Comparators | 2 analog comparators |
| Timers | 1 × 8-bit, 3 × 16-bit |
| CCP Modules | 2 |
| Communication | EUSART, SPI, I2C |
| 패키지 | 28-pin SSOP (5.30 mm body) |
| 동작 온도 | -40 C to +85 C (Industrial) |
| 실장 유형 | Surface Mount |
| MSL 레벨 | 1 |
| RoHS 상태 | Compliant |
| Lead-Free | Yes |
| Programming/Debug | ICSP via PGD/PGC; ICD |
PIC18LF25J11-I/SS 핀 구성
| 핀 1 | MCLR/RE3 — Master Clear (reset) input or digital-only I/O RE3 |
| 핀 2 | RA0/AN0 — Digital I/O RA0 / analog input AN0 |
| 핀 3 | RA1/AN1 — Digital I/O RA1 / analog input AN1 |
| 핀 4 | RA2/AN2/VREF- — Digital I/O RA2 / analog input AN2 / ADC negative reference |
| 핀 5 | RA3/AN3/VREF+ — Digital I/O RA3 / analog input AN3 / ADC positive reference |
| 핀 6 | RA4 — Digital I/O RA4 (open-drain) |
| 핀 7 | RA5/AN4/SS1 — Digital I/O RA5 / analog input AN4 / SPI1 slave select |
| 핀 8 | VSS — Ground reference |
| 핀 9 | RA7/OSC1 — Digital I/O RA7 / 32.768 kHz Timer1 oscillator input |
| 핀 10 | RA6/OSC2 — Digital I/O RA6 / 32.768 kHz Timer1 oscillator output |
| 핀 11 | RC0/T1CKI — Digital I/O RC0 / Timer1 clock input |
| 핀 12 | RC1/CCP2 — Digital I/O RC1 / Capture-Compare-PWM 2 |
| 핀 13 | RC2/CCP1 — Digital I/O RC2 / Capture-Compare-PWM 1 |
| 핀 14 | RC3/SCK1/SCL1 — Digital I/O RC3 / SPI1 clock / I2C1 clock |
| 핀 15 | RC4/SDI1/SDA1 — Digital I/O RC4 / SPI1 data in / I2C1 data |
| 핀 16 | RC5/SDO1 — Digital I/O RC5 / SPI1 data out |
| 핀 17 | RC6/TX1/CK1 — Digital I/O RC6 / EUSART1 TX / clock |
| 핀 18 | RC7/RX1/DT1 — Digital I/O RC7 / EUSART1 RX / data |
| 핀 19 | VSS — Ground reference |
| 핀 20 | VDD — Positive supply 2.0V–3.6V |
| 핀 21 | RB0/AN12 — Digital I/O RB0 / analog input AN12 (interrupt-on-change) |
| 핀 22 | RB1/AN10 — Digital I/O RB1 / analog input AN10 |
| 핀 23 | RB2/AN8 — Digital I/O RB2 / analog input AN8 |
| 핀 24 | RB3/AN9/CCP2 — Digital I/O RB3 / analog input AN9 / alternate CCP2 |
| 핀 25 | RB4/AN11 — Digital I/O RB4 / analog input AN11 |
| 핀 26 | RB5/AN13 — Digital I/O RB5 / analog input AN13 |
| 핀 27 | RB6/PGC — Digital I/O RB6 / ICSP clock (programming primary) |
| 핀 28 | RB7/PGD — Digital I/O RB7 / ICSP data (programming primary) |
일반적인 애플리케이션
PIC18LF25J11-I/SS 적합 용도: 7 애플리케이션s: Battery-Powered IoT Sensor Beacons, Wearable Health Monitors, Energy-Harvesting Edge Devices, Industrial Remote Controls, Smart Thermostats and HVAC Sensors, Electronic Shelf Labels and Retail Tags, Portable Test and Measurement.
Battery-Powered IoT Sensor Beacons
The PIC18LF25J11-I/SS is engineered for low-duty-cycle IoT sensor nodes running from two AA cells or a single LiFePO4 cell. Its 2.0V–3.6V VDD range matches the alkaline discharge curve without a boost regulator, while the nanoWatt XLP technology delivers sub-100 nA deep-doze current per the Microchip 39931E datasheet. The 32 KB Flash supports Over-The-Air bootloader staging for LoRa/SLEWAVE/Sigfox firmware updates, and the 10-bit ADC with 13 channels handles temperature, humidity, and battery-voltage sensing. Placed as the main MCU between the sensor front-end and the radio module, it stays asleep 99% of the time and wakes on RTCC rollover or GPIO interrupt to publish measurements, easily achieving multi-year coin-cell life in typical 1% duty-cycle profiles.
추천
Wearable Health Monitors
For wrist-worn heart-rate, SpO2, and step-counter designs, the PIC18LF25J11-I/SS supplies the low-noise processing core that aggregates sensor data and drives an OLED or BLE link. The 48 MHz CPU delivers 12 MIPS, ample for on-chip FIR filtering of pulse-ox waveforms sampled by the 10-bit ADC at 100 ksps. The wide 2.0V–3.6V supply window supports direct Li-ion battery connection without LDO losses, and the 21 SSOP-28 I/O lines interface directly to I2C sensors and SPI BLE transceivers. Its nanoWatt XLP doze current of under 100 nA, documented in the 39931E datasheet, enables the device to idle between heart-rate samples, contributing less than 1% to total system quiescent current in a continuous-monitoring wearable.
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Energy-Harvesting Edge Devices
Energy-harvesting designs running from a small photovoltaic or thermal harvester with a supercap buffer benefit from the PIC18LF25J11-I/SS's extreme low-power profile. The wide 2.0V–3.6V supply range lets the MCU run directly from a supercap that swings between 0.5 V (via a harvester boost) and 3.6 V fully charged, eliminating an extra LDO. The 32 KB Flash stores adaptive duty-cycle firmware that self-tunes the sensor-sampling rate to available energy per the 39931E datasheet. The on-chip RTCC with calendar wakes the device every few seconds with no external 32.768 kHz crystal required, cutting BOM cost in industrial wireless switch and HVAC sensor nodes.
추천
Industrial Remote Controls
Battery-powered industrial remote controls for cranes, machinery, and garage-door operators use the PIC18LF25J11-I/SS to decode RF commands while drawing micro-amps idle. The 10-bit ADC scans up to 13 joystick or button inputs, while the EUSART drives an external 433/868 MHz ASK or FSK transceiver. Per the 39931E datasheet, the 32 KB Flash comfortably accommodates encrypted rolling-code firmware, and the 4 KB SRAM buffers incoming command frames. The SSOP-28 package's 5.30 mm body remains surface-mountable on small remote-control PCBs, and the -40 C to +85 C industrial temperature range covers outdoor and factory environments without derating.
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Smart Thermostats and HVAC Sensors
Smart thermostats integrate the PIC18LF25J11-I/SS as the user-interface and sensor-processing MCU because of its balance of 32 KB Flash, 4 KB RAM, and 21 I/O lines. The 10-bit ADC handles temperature, humidity, and battery voltage on dedicated channels, while the EUSART/SPI/I2C peripherals connect to an OLED display driver, a Wi-Fi co-processor, and a temperature/humidity sensor such as the SHT3x. Per Microchip datasheet 39931E, the wide 2.0V–3.6V supply range supports 24VAC-derived rails via a small bridge and LDO. The device's industrial temperature range (-40 C to +85 C) is well within thermostat housing requirements, and the nanoWatt XLP doze modes extend battery backup during AC power loss.
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Electronic Shelf Labels and Retail Tags
Retail electronic shelf labels (ESLs) operate from coin cells for 5–10 years and need an MCU with extremely low sleep current and just enough Flash for an LCD/segment display driver and an RF sub-link receiver. The PIC18LF25J11-I/SS fits that bill: 32 KB Flash stores custom fonts and segment maps, 256 B EEPROM retains pricing and ID data across battery swaps, and nanoWatt XLP technology with sub-100 nA deep-doze (39931E datasheet) extends coin-cell life. The 28-SSOP footprint is compact enough to fit a 30 mm × 40 mm label PCB, and the 21 I/O lines drive segmented LCDs via the on-chip LCD biasing circuitry from the J-family peripherals.
추천
Portable Test and Measurement
Handheld DMMs, clamp meters, and insulation testers use the PIC18LF25J11-I/SS as their display-and-logging MCU because of its 48 MHz CPU speed, 32 KB Flash for measurement firmware, and 10-bit ADC that scans voltage, current, and temperature inputs. Per the 39931E datasheet, the LF 2.0V–3.6V supply window runs directly from two AA cells, and the 4 KB SRAM stores sample buffers for transient captures. Two CCP modules drive PWM for buzzer tones or backlight dimming, while the EUSART outputs measurement data to an isolated USB bridge. The -40 C to +85 C industrial range covers outdoor and industrial environments without thermal derating.
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추천 제품 요약
엔지니어링 참조 데이터: PIC18LF25J11-I/SS — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PIC18F25J11-I/SS | PIC18LF25J10-I/SS | PIC18LF25J11-I/SP |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP (same) | 28-SSOP (same) | 28-SPDIP (different body) |
| Core | 8-bit PIC18 | 8-bit PIC18 | 8-bit PIC18 | 8-bit PIC18 |
| Maximum Frequency | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Operating Voltage | 2.0 V – 3.6 V | 2.0 V – 5.5 V | 2.0 V – 3.6 V | 2.0 V – 3.6 V |
| ADC Channels | 13 (10-bit) | 13 (10-bit) | 10 (10-bit) | 13 (10-bit) |
| AEC-Q100 Automotive | No (Industrial grade) | No (Industrial grade) | No (Industrial grade) | No (Industrial grade) |
주요 차별점
- Wide 2.0V–3.6V supply with nanoWatt XLP deep-doze < 100 nA (vs PIC18F25J11-I/SS)
- Largest memory in J-family at this pin count (vs PIC18LF24J11-I/SS)
- Two CCP modules vs one on the J10 sibling (vs PIC18LF25J10-I/SS)
설계 노트
Per Microchip 39931E datasheet, the PIC18LF25J11-I/SS has four low-power modes: Run, Idle, Sleep, and Deep Sleep with RTCC. Sleep current is typically 100 nA with RTCC enabled, and 5 nA with RTCC disabled, allowing multi-year life in battery applications. Always ground the unused AVDD pin or tie it to VDD via a ferrite; floating AVDD can cause ADC reference drift and add 30–50 µA leakage.
The SSOP-28 package has a thermal resistance θJA of approximately 90 °C/W (per Microchip 39931E), well within the industrial -40 °C to +85 °C range even at full 48 MHz operation. Place a 0.1 µF decoupling capacitor within 5 mm of VDD (pin 20) and a 1 µF bulk capacitor on the same node. Connect all VSS pins (8 and 19) to a single ground pour with via stitching for lowest EMI.
Do not connect any pin above VDD + 0.3 V or below VSS − 0.3 V; the LF variant does NOT tolerate 5 V signals on its pins. For designs migrating from PIC18F25J11-I/SS at 5 V, add series resistors or level shifters on all signals crossing to 5 V peripherals. Per the 39931E datasheet, VDD must be between 2.0 V and 3.6 V at power-on; below 2.0 V the BOR may not reset reliably. Always tie MCLR high via 10 kΩ for proper reset.
The internal 8 MHz oscillator with 4× PLL delivers 48 MHz system clock but the 10-bit ADC is rated for conversion up to 16 ksps at 48 MHz (per 39931E datasheet). For ADC accuracy above 10 ksps, switch to the internal 4 MHz FRC source and acquire at lower conversion rates. Use the dedicated VREF+ / VREF- pins (RA3 / RA2) when ADC accuracy matters rather than VDD as reference; VDD has 50 mV typical noise that translates to 5 LSB ADC error.
규정 준수 정보
RoHS and REACH compliance confirmed via Microchip product page and DigiKey catalog listing. Not AEC-Q100 qualified - this is an industrial-grade part. Automotive designers should consider AEC-Q100-qualified PIC18 variants.
