PIC18LF24J10-I/SO - 8-Bit 40MHz 16KB Flash MCU | Microchip
MPN: PIC18LF24J10-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.66 | $26.60 |
| 100 | $2.36 | $236.00 |
| 500 | $2.13 | $1,065.00 |
| 1,000 | $1.91 | $1,910.00 |
PIC18LF24J10-I/SO Overview
What is a PIC18 microcontroller? A PIC18 is Microchip's enhanced 8-bit Harvard-architecture RISC microcontroller family, positioned above the PIC16 mid-range and below the PIC24/dsPIC 16-bit families. Within the taxonomy it belongs to microcontroller -> embedded MCU -> semiconductor IC. PIC18 devices add 16-bit wide instructions, hardware multiply, linear program memory, and C-friendly addressing, while keeping the deterministic instruction cycle that PIC parts are known for. The PIC18LF24J10 specifically targets low-voltage, high-performance designs that need rich communication peripherals (USART with LIN, two SSP ports with I2C address masking) at modest memory cost.
Key features include 16 KB Flash, 1024 bytes of SRAM, 256 bytes of EEPROM, 25 digital I/O pins, 10-bit A/D converter with up to 10 channels, two analog comparators, an enhanced USART, two MSSP ports, and Microchip's nanoWatt power-management technology with multiple idle and sleep modes. The 40 MHz internal oscillator (10 MIPS throughput) eliminates an external crystal in many designs and simplifies BOM.
Architecture highlights: the PIC18LF24J10 uses a 16-bit instruction word with a single-cycle ALU, a 31-level hardware stack, and a priority-enabled interrupt controller. The 10-bit ADC delivers up to 10 channels through a shared sample-and-hold, and the nanoWatt feature set (RC_RUN, SEC_RUN, SEC_IDLE, sleep) lets the device draw only a few microamps in standby, making it a strong fit for battery-powered or energy-harvesting products.
Typical applications include industrial sensor interfaces, low-power handheld instruments, USB-to-UART bridges (when paired with a USB transceiver), home-automation nodes, automotive body controllers (non-safety), and small appliances requiring LIN or I2C sensor networks. The 28-pin SOIC footprint is friendly to hand-soldering and through-pin replacement on legacy boards.
Design consideration: when migrating from the PIC18F24J10 to this "LF" variant, verify that VDD never exceeds 3.6 V — the F-version supports 4.2 V to 5.5 V while the LF version is restricted to 2.0 V to 3.6 V. Always place a 0.1 uF decoupling capacitor as close as practical to VDD/SS and a 10 uF bulk capacitor near the supply pin.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives from the same PIC18J family, and practical design notes that go beyond what is in the manufacturer datasheet.
Drop-in alternatives for PIC18LF24J10-I/SO — 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 PIC18LF24J10-I/SO (same form factor and footprint) — differing in Package, ADC, Timers, I/O Pins, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18LF25J10-I/SO
✅ Drop-In✓ In Stock
$2.31 / Unit
View Datasheet →PIC18F24J10-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF25J50-I/SO
✅ Drop-In✓ In Stock
$2.75 / Unit
View Datasheet →PIC18LF46J50-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18LF24K50-I/SO
✅ Drop-In✓ In Stock
$1.65 / Unit
View Datasheet →PIC18LF24J10-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 (8-bit RISC, enhanced Harvard) |
| Core Series | PIC18J (low-voltage LF) |
| Program Memory (Flash) | 16 KB (8K x 16) |
| RAM | 1024 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Clock | 40 MHz (10 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| I/O Pins | 25 |
| ADC | 10-bit, up to 10 channels |
| Analog Comparators | 2 |
| Timers | 5 (16-bit / 8-bit mix) |
| Communication Peripherals | Enhanced USART (LIN), 2x MSSP (I2C/SPI) |
| Operating Temperature | -40C to +85C (Industrial, "I") |
| Package | 28-pin SOIC, wide body, 7.50 mm (.300") |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Tube Quantity | 27 per tube |
| Lead-Free | Yes |
PIC18LF24J10-I/SO Pin Configuration
| Pin 1 | MCLR/VPP/RE3 — Master Clear (active low) / Programming voltage / Port E bit 3 |
| Pin 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| Pin 4 | RA2/AN2/VREF- — PORTA bit 2 / Analog input 2 / ADC VREF- |
| Pin 5 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / ADC VREF+ |
| Pin 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin 7 | RA5/AN4 — PORTA bit 5 / Analog input 4 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA7/OSC1/CLKI — PORTA bit 7 / Oscillator input |
| Pin 10 | RA6/OSC2/CLKO — PORTA bit 6 / Oscillator output |
| Pin 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator |
| Pin 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator / CCP2 |
| Pin 13 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| Pin 14 | RC3/SCK1/SCL1 — PORTC bit 3 / SPI/I2C clock |
| Pin 15 | RC4/SDI1/SDA1 — PORTC bit 4 / SPI data in / I2C data |
| Pin 16 | RC5/SDO1 — PORTC bit 5 / SPI data out |
| Pin 17 | RC6/TX1/CK1 — PORTC bit 6 / USART1 TX / clock |
| Pin 18 | RC7/RX1/DT1 — PORTC bit 7 / USART1 RX / data |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply (2.0 V to 3.6 V) |
| Pin 21 | RB0/AN12/INT0 — PORTB bit 0 / Analog input 12 / External interrupt 0 |
| Pin 22 | RB1/AN10/INT1 — PORTB bit 1 / Analog input 10 / External interrupt 1 |
| Pin 23 | RB2/AN8 — PORTB bit 2 / Analog input 8 |
| Pin 24 | RB3/AN9 — PORTB bit 3 / Analog input 9 |
| Pin 25 | RB4/AN11/KBI0 — PORTB bit 4 / Analog input 11 / KBI interrupt 0 |
| Pin 26 | RB5/KBI1 — PORTB bit 5 / KBI interrupt 1 |
| Pin 27 | RB6/KBI2/PGC — PORTB bit 6 / KBI interrupt 2 / ICSP clock |
| Pin 28 | RB7/KBI3/PGD — PORTB bit 7 / KBI interrupt 3 / ICSP data |
Typical Applications
PIC18LF24J10-I/SO is suitable for 6 applications: Industrial Sensor Interface & Data Logger, Low-Power Battery-Powered Handheld Instruments, USB-to-UART Bridge / CDC Device, Home-Automation Sensor Nodes, Small Appliance Control (LIN Bus Body Controllers), LED Lighting Control & DMX Receivers.
Industrial Sensor Interface & Data Logger
The PIC18LF24J10-I/SO is well suited for industrial 4-20 mA or 0-10 V sensor interface boards that need to digitize, condition, and forward readings to a host. Its 10-bit ADC with up to 10 channels handles multiple transducer inputs simultaneously, and the enhanced USART plus two MSSP ports connect to RS-485 transceivers or I2C sensor clusters. With 16 KB Flash and 1024 bytes of RAM, the part runs a small RTOS-style scheduler with averaging, calibration tables, and Modbus framing. nanoWatt sleep currents of a few microamps allow battery-backed loggers to run for years on a single D-cell. The 28-pin SOIC package is friendly to industrial conformal-coated boards where hand-reworkability matters.
Recommended
Low-Power Battery-Powered Handheld Instruments
Battery-powered handheld meters benefit from the PIC18LF24J10-I/SO's 2.0 V to 3.6 V operation, enabling direct connection to a single Li-ion or 2x AA cell stack. nanoWatt Technology provides RC_RUN, SEC_RUN, SEC_IDLE, and deep-sleep modes that drop quiescent current to single-digit microamps between measurements. The 10 MIPS throughput is enough to drive character LCDs, scan keypads, and run piecewise-linear sensor compensation in real time. A 0.1 uF decoupling capacitor and 10 uF bulk cap near VDD keep ADC readings clean. Designers can extend operating life from days to months by waking the MCU on a comparator edge or timer interrupt rather than polling.
Recommended
USB-to-UART Bridge / CDC Device
Although the PIC18LF24J10-I/SO lacks native USB, it is widely used with external USB-to-UART bridges such as the MCP2200 or MCP2221 to provide legacy serial ports over USB. The enhanced USART supports hardware flow control (RTS/CTS) while the MSSP ports can drive SPI displays or I2C sensors. For designs that later need full-speed USB, the pin-compatible PIC18LF24K50-I/SO or PIC18LF25J50-I/SO drops in without changing the PCB. With the LF core, the bridge draws under 10 mA active and well below 1 mA in sleep, ideal for bus-powered accessories.
Recommended
Home-Automation Sensor Nodes
Home-automation nodes (window sensors, leak detectors, smart thermostats) take advantage of the PIC18LF24J10-I/SO's low sleep current, 25 I/O lines, and integrated 10-bit ADC for battery-powered edge sensing. The two MSSP ports allow simultaneous I2C connection to a sensor and SPI connection to a sub-GHz or BLE front-end module. The enhanced USART with LIN capability bridges to HVAC-style LIN bus networks. With 16 KB Flash, firmware can implement OTA-ready bootloaders and secure pairing flows. The industrial temperature range (-40C to +85C) ensures reliable operation in attics, basements, and outdoor enclosures.
Recommended
Small Appliance Control (LIN Bus Body Controllers)
The PIC18LF24J10-I/SO's enhanced USART with built-in LIN 1.3/2.0/2.1 hardware support makes it a strong fit for LIN-based automotive body controllers and small appliances such as refrigerators, washing machines, and HVAC dampers. The 10-bit ADC reads thermistor, current-sense, and rotary-encoder inputs; the PWM-driven CCP/ECCP modules drive triac-gated heater and motor stages. At 40 MHz the part executes LIN scheduling with deterministic sub-100us response, and nanoWatt modes drop idle current to under 10 uA when the appliance is in standby. The wide-body SOIC is friendly to hand-solder rework on service-replacement boards.
Recommended
LED Lighting Control & DMX Receivers
Architectural and entertainment LED fixtures use the PIC18LF24J10-I/SO as a low-cost DMX-512 receiver or PWM controller. The enhanced USART handles 250 kbps DMX with hardware address filtering, while the ECCP modules generate up to four PWM channels for RGBW color mixing. With 10 MIPS throughput, smooth 16-bit gamma-corrected dimming is possible without flicker. The 25 I/O pins drive discrete MOSFETs or addressable LED driver chips such as the TLC5947 over SPI. Designers can leverage the 16 KB Flash for color science, fade tables, and small state machines that previously required a 32-bit MCU.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF24J10-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18LF25J10-I/SO | PIC18F24J10-I/SO | PIC18LF25J50-I/SO | PIC18LF46J50-I/PT | PIC18LF24K50-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-28 (wide) | SOIC-28 (wide) - same | SOIC-28 (wide) - same | SOIC-28 (wide) - same | TQFP-44 - different | SOIC-28 (wide) - same |
| Flash Memory | 16 KB | 32 KB | 16 KB | 32 KB | 64 KB | 16 KB |
| SRAM | 1024 bytes | 1024 bytes | 1024 bytes | 2048 bytes | 3776 bytes | 1024 bytes |
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 4.2 V to 5.5 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 1.8 V to 3.6 V |
| Max Clock | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) |
| USB Support | No | No | No | Yes (USB 2.0 FS) | Yes (USB 2.0 FS) | Yes (USB 2.0 FS) |
| ADC | 10-bit, 10 ch | 10-bit, 10 ch | 10-bit, 10 ch | 10-bit, 10 ch | 10-bit, 13 ch | 10-bit, 14 ch |
| Unit Price (qty 1, USD) | 2.95 | 3.10 | 2.85 | 3.45 | 4.10 | 3.20 |
Key Differentiators
- Pin-compatible 32 KB upgrade path in the same SOIC-28 package (vs PIC18LF25J10-I/SO)
- 5 V variant for legacy industrial rails (vs PIC18F24J10-I/SO)
- Adds native USB 2.0 full-speed without footprint change (vs PIC18LF24K50-I/SO)
- nanoWatt Technology gives microamp sleep currents (vs PIC18F24J10-I/SO)
Design Notes
Place a 0.1 uF decoupling capacitor as close as possible to each VDD/SS pin pair (the PIC18LF24J10 has two VSS and one VDD on 28-pin SOIC). Add a 10 uF bulk capacitor near the supply input. The LF device operates from 2.0 V to 3.6 V only; never exceed 3.6 V or the Flash can be corrupted. When migrating from the F-version, add a 3.3 V LDO such as MCP1700 if the system rail is 5 V. nanoWatt sleep currents are datasheet-only with the internal RC oscillator disabled; verify wake-up time with your crystal choice before locking in firmware.
Do not apply 5 V to VDD on the LF variant - this will damage the part. Configuration bits must be set for the internal RC oscillator with a PLL disabled for 2.0 V operation; running at 40 MHz below 2.4 V is out-of-spec. The ICD/ICSP pins RB6/PGC and RB7/PGD must be left free of strong pull-ups during programming. Use Microchip's MPLAB X IDE with the latest XC8 compiler, and remember that PIC18 instruction timing is 4 oscillator clocks per cycle - 40 MHz delivers 10 MIPS, not 40 MIPS.
The 28-pin SOIC wide-body footprint is friendly to hand-soldering but requires thermal reliefs on the ground pads to avoid lifted lands during rework. Route the analog AVSS and VDD analog traces (if used) away from the USART switching lines, and place the ADC reference decoupling (0.1 uF + 10 uF) within 5 mm of the VREF+/VREF- pins. For LIN-bus designs, add a TVS diode and series resistor on the bus line, and keep the LIN transceiver within 10 mm of the MCU's USART pins to minimize radiated emissions.
When using the MSSP ports in I2C mode, place 4.7 kohm pull-ups on SCL and SDA close to the bus master; pull-up values depend on bus capacitance and must be calculated for the slowest rise time you can tolerate. For SPI, keep traces under 50 mm and use a 22 ohm series resistor near the source to dampen reflections, especially when driving cables or long PCB runs to LED arrays. Verify the ADC acquisition time against source impedance - the datasheet specifies a maximum 10 kohm source for full 10-bit accuracy at 1.5 uS TACQ.
Compliance Information
RoHS and lead-free per Microchip product page. Not AEC-Q100 qualified - choose PIC18F or PIC18K automotive variants for vehicle applications.
