PIC18LF27J13-I/SP - 128KB Flash 8-bit MCU 48MHz | Microchip
MPN: PIC18LF27J13-I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.2 | $5.20 |
| 10 | $4.68 | $46.80 |
| 100 | $4.15 | $415.00 |
| 500 | $3.73 | $1,865.00 |
| 1,000 | $3.31 | $3,310.00 |
PIC18LF27J13-I/SP Overview
An 8-bit PIC microcontroller is a Harvard-architecture RISC processor designed for embedded control, combining a compact instruction set with rich peripheral integration (ADC, timers, communication ports) on a single die. Within the broader taxonomy, PIC MCUs sit under the microcontroller category, which itself belongs to integrated circuits and embedded systems; the PIC18 sub-family adds hardware multiply, extended instructions, and C-friendly addressing over the baseline PIC16 line.
Key features of the PIC18LF27J13-I/SP include 128KB self-programmable Flash (64K x 16 organization), 4KB SRAM, 12-bit A/D converter with up to 10 channels, multiple Enhanced USART, SPI, and I2C interfaces, 4 timers, a 10-bit PWM module, and Microchip's nanoWatt XLP deep-sleep modes drawing under 100 nA. The 48 MHz internal oscillator with PLL delivers 12 MIPS throughput, and the integrated RTCC with on-chip calibration supports accurate real-time clock operation without external crystals.
Architecturally, the device uses a modified Harvard bus with separate program and data paths, a 16-bit instruction word, and a 32-level hardware stack. The Flash program memory is partitioned for boot loader and application use, and self-programmability enables in-application firmware updates. The 10-bit A/D converter with acquisition time programmable down to 0.4 us supports high-speed sensor sampling for motor control and instrumentation.
Typical applications include consumer white goods, industrial sensor nodes, home-automation controllers, USB-to-UART bridges, portable medical telemetry, and low-power wireless sensor platforms. The deep-sleep nanoWatt technology extends battery life for energy-harvesting or coin-cell designs, and the wide peripheral set keeps external component count low.
When designing with this part, verify the supply rail sits within the 2.0V-3.6V LF specification; the non-LF PIC18F27J13 family operates at 4.2V-5.5V. Use proper decoupling (100 nF plus 10 uF bulk) close to the VDD/VSS pins, and configure the configuration bits for the chosen oscillator mode before programming.
This page synthesizes distributor pricing, drop-in compatible PIC alternatives, and practical low-power design notes not aggregated in the manufacturer datasheet.
Drop-in alternatives for PIC18LF27J13-I/SP — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC18LF27J13-I/SP (same form factor and footprint) — differing in ADC, Package, Timers, I/O Pins, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18LF26J13-I/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.65 / Unit
View Datasheet →PIC18LF27J53-I/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.2 / Unit
View Datasheet →PIC18F27J13-I/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.91 / Unit
View Datasheet →PIC18LF27J13-I/SP Maximum Ratings & Electrical Characteristics
| Product Family | PIC18LF J1x Series |
| Core Architecture | PIC18 (8-bit RISC, Harvard) |
| Program Memory | 128 KB Flash (64K x 16) |
| RAM | 4 KB |
| CPU Speed | 48 MHz (12 MIPS) |
| Supply Voltage | 2.0 V to 3.6 V (LF family) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | 28-pin SPDIP (0.300 inch) |
| I/O Pins | 22 (approx., 28-pin variant) |
| ADC | 10-bit, up to 10 channels |
| Communication Interfaces | 2x EUSART, 2x SPI, 2x I2C |
| Timers | 4 (16-bit / 8-bit mix) |
| PWM Channels | 10-bit PWM module |
| Low-Power Modes | nanoWatt XLP, deep sleep <100 nA |
| Mounting Type | Through-Hole (SPDIP) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC18LF27J13-I/SP Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, internal pull-up |
| Pin 2 | RA0 — Digital I/O / analog AN0 / RP |
| Pin 3 | RA1 — Digital I/O / analog AN1 / RP |
| Pin 4 | RA2 — Digital I/O / analog AN2 / RP |
| Pin 5 | RA3 — Digital I/O / analog AN3 / RP |
| Pin 6 | RA4 — Digital I/O / analog AN4 / RP |
| Pin 7 | RA5 — Digital I/O / analog AN5 / RP |
| Pin 8 | RA6 — Digital I/O / analog AN6 / RP |
| Pin 9 | RA7 — Digital I/O / analog AN7 / RP |
| Pin 10 | VSS — Ground reference |
| Pin 11 | VDD — Positive supply (2.0V-3.6V) |
| Pin 12 | VSS — Ground reference |
| Pin 13 | OSC1 — External oscillator / crystal input |
| Pin 14 | OSC2 — External oscillator / crystal output |
| Pin 15 | RC0 — Digital I/O / RP / SOSCO |
| Pin 16 | RC1 — Digital I/O / RP / SOSCI |
| Pin 17 | RC2 — Digital I/O / RP / AN8 |
| Pin 18 | RC3 — Digital I/O / RP / AN9 |
| Pin 19 | RC4 — Digital I/O / RP / D- |
| Pin 20 | RC5 — Digital I/O / RP / D+ |
| Pin 21 | RC6 — Digital I/O / RP / TX |
| Pin 22 | RC7 — Digital I/O / RP / RX |
| Pin 23 | RB0 — Digital I/O / RP / INT0 |
| Pin 24 | RB1 — Digital I/O / RP / INT1 |
| Pin 25 | RB2 — Digital I/O / RP / INT2 |
| Pin 26 | RB3 — Digital I/O / RP / INT3 |
| Pin 27 | RB4 — Digital I/O / RP |
| Pin 28 | RB5 — Digital I/O / RP |
Typical Applications
PIC18LF27J13-I/SP is suitable for 7 applications: Battery-Powered IoT Sensor Node, Industrial Sensor Hub, USB-to-UART Bridge Dongle, Home Automation Controller, Portable Medical Telemetry, Consumer White Goods Control Board, Motor Control Reference Design.
Battery-Powered IoT Sensor Node
The PIC18LF27J13-I/SP fits battery-powered IoT sensor nodes because its nanoWatt XLP technology draws under 100 nA in deep-sleep mode while retaining RAM, allowing wake-on-interrupt sensor sampling that extends coin-cell life to years. The 128 KB Flash stores Zigbee, BLE, or LoRaWAN protocol stacks alongside application code, and the 4 KB RAM buffers sensor bursts before radio transmission. At 3.3 V the LF voltage range supports 2xAA alkaline or single-cell Li-ion directly, removing the need for boost regulators per the Microchip datasheet DS39977B.
Recommended
Industrial Sensor Hub
The PIC18LF27J13-I/SP serves as an industrial sensor hub controller thanks to its 10-bit ADC with up to 10 input channels, capable of digitizing 4-20 mA loop sensors, thermistors, and bridge pressure transducers at sampling rates up to 100 ksps. The 2x EUSART interfaces connect to RS-485/RS-232 transceivers for Modbus RTU or serial fieldbus, while SPI/I2C drive external EEPROM or digital sensors. The -40C to +85C industrial temperature range tolerates factory-floor environments per the Microchip datasheet DS39977B.
Recommended
USB-to-UART Bridge Dongle
The PIC18LF27J13-I/SP can implement a USB-to-UART bridge by leveraging its 2x EUSART and the J-series flexible peripherals, though full USB 2.0 FS requires migration to the PIC18LF27J53-I/SP (drop-in in the same package). For 3.3 V serial-to-USB conversion at lower baud rates, the 48 MHz core and dual EUSART handle CDC-ACM enumeration and bulk transfers. The 128 KB Flash holds USB stacks, class drivers, and HID descriptors without external memory per the Microchip datasheet DS39977B.
Recommended
Home Automation Controller
The PIC18LF27J13-I/SP is suitable for home-automation controllers managing lighting relays, HVAC actuators, and occupancy sensors because its 22 I/O pins handle multi-zone switching while SPI/I2C drive OLED displays or peripheral sensor hubs. The hardware PWM module generates Dimmable LED control signals at 10-bit resolution, and the 12 MIPS throughput runs local automation rules without cloud dependency. The nanoWatt XLP standby keeps always-on listening power below 100 nA per the Microchip datasheet DS39977B.
Recommended
Portable Medical Telemetry
The PIC18LF27J13-I/SP fits portable medical telemetry devices because its low 2.0V-3.6V supply and sub-100 nA deep-sleep current extend battery life for wearables measuring SpO2, ECG, or glucose. The 10-bit ADC digitizes biosensor signals at sampling rates sufficient for pulse oximetry, while the 128 KB Flash stores calibration tables and signal-processing algorithms. Hardware CRC and the optional AES peripheral secure patient data per the Microchip datasheet DS39977B.
Recommended
Consumer White Goods Control Board
The PIC18LF27J13-I/SP serves as the main controller in consumer white goods such as washing machines, dishwashers, and microwave ovens where the 28-pin SPDIP package simplifies through-hole assembly and field-service replacement. The 128 KB Flash supports multi-language UI strings and complex motor-control algorithms, while the 10-bit ADC reads temperature, water level, and motor current sensors. The industrial -40C to +85C operating range tolerates appliance thermal environments per the Microchip datasheet DS39977B.
Recommended
Motor Control Reference Design
The PIC18LF27J13-I/SP can drive BLDC or stepper motor control loops using its 10-bit PWM module and four 16-bit timers for commutation timing. The 48 MHz CPU bandwidth executes FOC (field-oriented control) algorithms at loop rates up to 20 kHz while the 10-bit ADC samples phase currents through op-amp conditioning. The nanoWatt XLP modes enable standby sleep between motion commands per the Microchip datasheet DS39977B, ideal for battery-powered robotic tools.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF27J13-I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18LF26J13-I/SP | PIC18LF27J53-I/SP | PIC18F27J13-I/SP |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin SPDIP | 28-pin SPDIP - same | 28-pin SPDIP - same | 28-pin SPDIP - same |
| Program Flash | 128 KB | 64 KB | 128 KB | 128 KB |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB |
| Max CPU Clock | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) |
| Supply Voltage | 2.0 V to 3.6 V (LF) | 2.0 V to 3.6 V (LF) | 2.0 V to 3.6 V (LF) | 4.2 V to 5.5 V (F) |
| USB 2.0 FS OTG | No | No | Yes | No |
| Low-Power Mode | nanoWatt XLP deep-sleep <100 nA | nanoWatt XLP deep-sleep <100 nA | nanoWatt XLP deep-sleep <100 nA | nanoWatt XLP deep-sleep <100 nA |
Key Differentiators
- Lowest-voltage operation in PIC18 J-series family (vs PIC18F27J13-I/SP)
- Largest memory in 28-pin PIC18LF J-series (vs PIC18LF26J13-I/SP)
- Upgrade path to USB (vs PIC18LF27J53-I/SP)
Design Notes
Estimated: At 48 MHz CPU and 3.3 V supply, active current consumption for the PIC18LF27J13-I/SP is approximately 9 mA, while deep-sleep with RAM retention drops below 100 nA per the Microchip datasheet DS39977B. Use the internal 8 MHz or 32 kHz oscillator to reduce active power, and gate peripherals via PMD registers before entering sleep. For coin-cell designs, place the MCU in deep-sleep between sensor samples and wake via RTCC alarm to extend battery life to multiple years.
Place a 100 nF ceramic decoupling capacitor within 5 mm of every VDD/VSS pair, plus a 10 uF bulk capacitor at the package power pin. The SPDIP package has long lead inductance, so additional bulk capacitance stabilizes supply during RF transmission bursts. Connect the AVSS and AVSS pins to a clean analog ground, and ensure MCLR is pulled up to VDD through a 10 kohm resistor per Microchip layout guidelines in DS39977B.
Do not exceed 3.6 V on the LF variant; the PIC18LF27J13 is NOT 5V tolerant like the PIC18F27J13. Verify configuration bits are set correctly for the chosen oscillator mode before programming - using an unprogrammed device with default Fosc settings will fail to boot. PPS (Peripheral Pin Select) on J-series devices requires explicit pin mapping for remappable peripherals; undefined mappings disable peripheral outputs silently per the Microchip datasheet DS39977B.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; for automotive designs consider AEC-Q100-qualified PIC18 variants.
