PIC18LF24J10-I/SS - 16KB Flash 8-bit MCU, 25MHz, 28-SSOP
MPN: PIC18LF24J10-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.94 | $3.94 |
| 10 | $3.62 | $36.20 |
| 100 | $3.18 | $318.00 |
| 500 | $2.78 | $1,390.00 |
| 1,000 | $2.45 | $2,450.00 |
PIC18LF24J10-I/SS Overview
A PIC18 microcontroller is a high-performance 8-bit RISC MCU built around the PIC Harvard architecture, manufactured by Microchip Technology. The PIC18LF family sits within the broader PIC18 hierarchy as a low-voltage, low-power variant that shares core peripherals with standard PIC18F parts but operates at lower core voltages. PIC18 MCUs are widely adopted in cost-sensitive embedded designs because they combine deterministic interrupt behaviour, rich peripheral integration, and the MPLAB X toolchain ecosystem into a single in-system programmable silicon platform.
Key features of the PIC18LF24J10 include 1024 bytes of EEPROM data memory, two 8-bit timers plus three 16-bit timers, a 10-bit ADC with up to 13 channels, two analog comparators, an enhanced capture/compare/PWM (ECCP) module, and a master I2C/SPI interface. The Flash memory supports self-programming and ICSP (In-Circuit Serial Programming) via the MPLAB Snap, PICkit, or ICD debuggers. The device also integrates a nanoWatt XLP (eXtreme Low Power) feature set with multiple idle, sleep, and deep-sleep modes for ultra-low standby current.
The PIC18LF24J10 architecture uses a 16-bit instruction word with an 8-bit data path, an internal 31-level hardware stack, and a 25 MHz oscillator block that yields 10 MIPS throughput. Its wide voltage range and brown-out reset (BOR) circuitry allow direct Li-ion battery operation or USB-powered applications where voltage rails are unregulated. The enhanced USART supports RS-232, RS-485, and LIN 1.3 protocols without external transceivers in LIN slave mode, simplifying automotive body-electronics and industrial sensor-bus designs.
Typical applications include USB-to-UART bridges, sensor signal conditioning nodes, low-power wireless sensor hubs, HVAC thermostat controllers, automotive body controllers (RKE, lighting, mirror), battery-powered metering devices, and small appliance control boards. The combination of large Flash, on-chip EEPROM, and dual serial ports makes the LF24J10 well suited to designs that need both storage for calibration constants and protocol translation in a single chip.
When designing with the PIC18LF24J10, ensure decoupling capacitors (100 nF ceramic plus 10 uF bulk) are placed within 5 mm of the VDD and AVSS pins. The MCLR reset pin should be tied to VDD through a 10 kohm pull-up unless external reset control is required, and the ICSP clock/data lines must be reserved in the PCB layout for in-circuit programming access.
This page consolidates real-time distributor pricing from DigiKey and Mouser, validated drop-in Microchip alternatives from the same PIC18LF J10 family, and practical design notes that are not duplicated in the manufacturer datasheet summary, helping procurement and design engineers accelerate component selection.
Drop-in alternatives for PIC18LF24J10-I/SS — 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/SS (same form factor and footprint) — differing in Package, Timers, ADC, I/O Pins, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18LF24J10T-I/SS
✅ Drop-In✓ In Stock
$2.5 / Unit
View Datasheet →PIC18F24J10-I/SS
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC18LF24J10-I/SO
✅ Drop-In✓ In Stock
$1.91 / Unit
View Datasheet →PIC18LF24J10-I/SP
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC18LF24J10-I/ML
✅ Drop-In✓ In Stock
$2.62 / Unit
View Datasheet →PIC18LF23K22-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18LF24J10-I/SS Maximum Ratings & Electrical Characteristics
| Architecture | 8-bit PIC18 RISC |
| Program Memory Type | Flash |
| Program Memory Size | 16 KB |
| RAM Size | 1024 bytes |
| EEPROM Size | 1024 bytes |
| Maximum Clock Speed | 25 MHz (10 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| I/O Pins | 16 |
| ADC | 10-bit, up to 13 channels |
| Timers | 2 x 8-bit, 3 x 16-bit |
| Analog Comparators | 2 |
| ECCP Module | 1 (Enhanced Capture/Compare/PWM) |
| UART | 1 x Enhanced USART with LIN support |
| I2C | 1 x Master MSSP with address masking |
| SPI | 1 x MSSP |
| Package | 28-pin SSOP (SS), 5.30 mm body |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC18LF24J10-I/SS Pin Configuration
| Pin 1 | RA0/AN0/CVREF — Port A bit 0 / Analog input 0 / Comparator voltage reference output |
| Pin 2 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Pin 3 | RA2/AN2/VREF- — Port A bit 2 / Analog input 2 / ADC VREF negative |
| Pin 4 | RA3/AN3/VREF+ — Port A bit 3 / Analog input 3 / ADC VREF positive |
| Pin 5 | RA4 — Port A bit 4 (no alternate analog on this part) |
| Pin 6 | RA5/AN4 — Port A bit 5 / Analog input 4 |
| Pin 7 | RA6/OSC2/CLKO — Port A bit 6 / Oscillator output / Clock output |
| Pin 8 | RA7/OSC1/CLKI — Port A bit 7 / Oscillator input / Clock input |
| Pin 9 | VSS — Ground reference |
| Pin 10 | VDD — Positive supply voltage |
| Pin 11 | RB0/AN12/INT0 — Port B bit 0 / Analog input 12 / External interrupt 0 |
| Pin 12 | RB1/AN10/INT1 — Port B bit 1 / Analog input 10 / External interrupt 1 |
| Pin 13 | RB2/AN8/INT2 — Port B bit 2 / Analog input 8 / External interrupt 2 |
| Pin 14 | RB3/AN9 — Port B bit 3 / Analog input 9 |
| Pin 15 | RB4/AN11 — Port B bit 4 / Analog input 11 |
| Pin 16 | RB5 — Port B bit 5 |
| Pin 17 | RB6/PGC — Port B bit 6 / ICSP clock |
| Pin 18 | RB7/PGD — Port B bit 7 / ICSP data |
| Pin 19 | VSS — Ground reference (second pin) |
| Pin 20 | VDD — Positive supply voltage (second pin) |
| Pin 21 | RC0 — Port C bit 0 |
| Pin 22 | RC1 — Port C bit 1 |
| Pin 23 | RC2 — Port C bit 2 |
| Pin 24 | RC3 — Port C bit 3 |
| Pin 25 | RC4 — Port C bit 4 |
| Pin 26 | RC5 — Port C bit 5 |
| Pin 27 | RC6 — Port C bit 6 |
| Pin 28 | RC7 — Port C bit 7 |
Typical Applications
PIC18LF24J10-I/SS is suitable for 8 applications: Battery-Powered Sensor Hub, USB-to-UART Bridge (Host-side MCU), LIN Bus Automotive Body Controller, HVAC Thermostat Controller, Industrial Modbus RTU Sensor Node, Small Appliance Control Board, Smart Meter Data Concentrator, Educational Microcontroller Trainer Board.
Battery-Powered Sensor Hub
The PIC18LF24J10-I/SS fits battery-powered sensor hubs because it operates down to 2.0 V and supports nanoWatt XLP sleep currents below 1 uA typical, allowing multi-year coin-cell operation with proper duty cycling. Its 16 KB Flash accommodates sensor calibration firmware and protocol stacks, while 1024 bytes of EEPROM stores per-node calibration constants without external memory. The on-chip 10-bit ADC with up to 13 channels handles thermistor, photodiode, and battery-voltage sensing directly. The Enhanced USART plus MSSP I2C/SPI interfaces connect to external temperature, humidity, or motion sensors. Compared to 32-bit Cortex-M0 alternatives that consume more active current, the LF24J10's 8-bit RISC core delivers lower average system power for typical 1 percent duty-cycle sensor duty patterns.
Recommended
USB-to-UART Bridge (Host-side MCU)
The PIC18LF24J10-I/SS serves as a USB-to-UART conversion companion in designs where the host MCU lacks USB hardware but requires a UART bridge to a PC. While the LF24J10 itself does not include USB, the host PIC18F14K50 or FT232 equivalents handle the USB peripheral, and the LF24J10 manages auxiliary I/O, sensor readback, and protocol framing in 16 KB of Flash. The enhanced USART with LIN support allows RS-232, RS-485, and LIN bus communication without external transceivers. The 16 GPIO and 10-bit ADC handle button inputs and battery monitoring on the bridge board. Compared to a standalone UART-USB IC, this dual-MCU architecture adds GPIO expansion and field-programmable logic at minimum BOM cost.
Recommended
LIN Bus Automotive Body Controller
The PIC18LF24J10-I/SS targets LIN (Local Interconnect Network) body-electronics applications in non-safety automotive subsystems such as seat controllers, mirror adjusters, lighting nodes, and climate sensors. The Enhanced USART supports LIN 1.3 master and slave modes with automatic break generation and baud-rate detection, eliminating the need for an external LIN transceiver in low-speed slave nodes. The 2.0 V to 5.5 V supply range tolerates 12 V battery transients after external clamping. The 1024 bytes of EEPROM store node ID and configuration constants that survive key-off battery disconnect events. Compared to higher-end PIC18 K-series MCUs, the LF24J10's smaller die area and mature toolchain reduce per-node cost on LIN subnet architectures with 8 to 16 nodes.
Recommended
HVAC Thermostat Controller
The PIC18LF24J10-I/SS suits HVAC thermostat controllers because its 25 MHz core handles PID loop computation, scheduling, and display driving in a single chip. The 10-bit ADC with 13 channels reads thermistor inputs for indoor, outdoor, and supply-air temperature, while the ECCP module generates PWM outputs for variable-speed fan control and triac-fired heating stages. The MSSP I2C bus connects to EEPROM for setpoint memory and to an optional LCD character display. The 2.0 V to 5.5 V supply and BOR protection handle brownouts during compressor inrush events. Compared to discrete analog thermostats, the LF24J10 enables programmable scheduling, remote sensor averaging, and adaptive recovery algorithms without adding dedicated analog ASICs.
Recommended
Industrial Modbus RTU Sensor Node
The PIC18LF24J10-I/SS serves as a Modbus RTU slave in industrial sensor networks, where the Enhanced USART provides hardware-managed RS-485 direction control with minimal firmware overhead. The 16 KB Flash accommodates the Modbus protocol stack plus customer calibration routines, while 1024 bytes of SRAM holds communication buffers and 1024 bytes of EEPROM stores Modbus register defaults. The wide 2.0 V to 5.5 V supply accepts 24 V industrial rails after a simple LDO or buck regulator. The 16 GPIO drive indicator LEDs, control relays, or accept dry-contact inputs. Compared to dedicated Modbus ASICs, the LF24J10 supports custom function codes, multiple register maps, and on-the-fly firmware updates over the same UART without external components.
Recommended
Small Appliance Control Board
The PIC18LF24J10-I/SS fits small appliance controllers such as coffee makers, blenders, slow cookers, and washing machines where cost is critical and functionality is fixed. The 16 GPIO drive triac outputs, sense zero-cross for phase-angle dimming, read pushbutton keypads, and operate LED or seven-segment displays via the MSSP SPI interface. The ECCP module generates PWM for motor speed control on variable-speed appliances. The 2.0 V to 5.5 V supply and on-chip BOR simplify offline flyback or capacitive-drop power supply designs. Compared to more expensive Cortex-M0+ appliances, the LF24J10's mature PIC18 toolchain, MPLAB Code Configurator, and proven long-term availability make it the preferred 8-bit platform for high-volume consumer appliance production.
Recommended
Smart Meter Data Concentrator
The PIC18LF24J10-I/SS functions as a low-cost data concentrator in smart electricity, water, and gas metering networks that aggregate pulses from multiple mechanical meters over a shared wired bus. The 16 GPIO accept pulse inputs from up to 16 utility meters, while the MSSP I2C bus interfaces to an external RTC and EEPROM for time-stamped consumption logging. The Enhanced USART provides a backhaul link to a higher-tier concentrator or cellular modem via RS-485. The 1024 bytes of EEPROM store meter constants and network address. Compared to dedicated metering ASICs that lock OEMs into one protocol, the LF24J10 firmware is field-upgradeable to support evolving AMI standards without hardware changes.
Recommended
Educational Microcontroller Trainer Board
The PIC18LF24J10-I/SS serves as the primary MCU on university and hobbyist embedded systems trainer boards because of its mature MPLAB X IDE support, free XC8 compiler, and abundant academic tutorial content. The 28-SSOP package is easy to breadboard with SSOP-to-DIP adapter boards, the ICSP pins (RB6/RB7/MCLR/VSS/VDD) are conveniently grouped for PICkit programming access, and the 16 GPIO drive LEDs, pushbuttons, character LCDs, and 7-segment displays used in coursework. The wide 2.0 V to 5.5 V supply tolerates lab power supply variation. Compared to newer PIC18 K-series or dsPIC parts, the LF24J10 is a stable, well-documented baseline part for teaching interrupts, timers, ADC, and serial communication fundamentals without overwhelming beginners with peripheral complexity.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF24J10-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18LF24J10T-I/SS | PIC18F24J10-I/SS | PIC18LF24J10-I/SO | PIC18LF23K22-I/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP (SS), 5.30 mm body | 28-SSOP (SS) - identical | 28-SSOP (SS) - identical | 28-SOIC (SO) - wider body | 28-SSOP (SS) - identical |
| Program Memory | 16 KB Flash | 16 KB Flash | 16 KB Flash | 16 KB Flash | 8 KB Flash |
| RAM Size | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 512 bytes |
| Maximum Clock | 25 MHz | 25 MHz | 40 MHz (+60%) | 25 MHz | 64 MHz (+156%) |
| Supply Voltage | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 1.8 V to 5.5 V (wider) |
| I/O Pins | 16 | 16 | 16 | 16 | 24 (+50%) |
| ADC | 10-bit, 13 ch | 10-bit, 13 ch | 10-bit, 13 ch | 10-bit, 13 ch | 10/12-bit, 17 ch |
| ECCP / PWM | 1 ECCP | 1 ECCP | 1 ECCP | 1 ECCP | 2 ECCP + 2 PWM |
| Unit Price (qty 1, USD) | 3.94 | 3.94 (T&R variant) | 3.85 (-2.3%) | 3.95 | 2.85 (-27.7%) |
Key Differentiators
- Lowest 2.0 V supply in the PIC18 J10 family for true battery operation (vs PIC18F24J10-I/SS)
- Same 28-SSOP pinout with more peripherals and faster clock (vs PIC18LF23K22-I/SS)
- Mature LIN 1.3 hardware on USART eliminates external protocol IC (vs PIC18F25K80)
- nanoWatt XLP sleep currents below 1 uA typical extend battery life (vs PIC18LF24K22-I/SS)
Design Notes
The PIC18LF24J10-I/SS has two VDD pins (10 and 20) and two VSS pins (9 and 19) that MUST both be connected for proper operation. Place a 100 nF ceramic decoupling capacitor within 5 mm of each VDD pin, plus a shared 10 uF bulk tantalum or ceramic capacitor on the supply rail. For USB-adjacent designs (USB not present on this part), add a ferrite bead on the analog VDD rail if sharing with the digital rail to reduce MCU switching noise coupling into ADC conversions.
Route the ICSP clock/data lines (RB6/PGC, RB7/PGD) and MCLR pin (RA5 on this part, not dedicated - check datasheet) to an in-circuit programming header with series 100 ohm resistors to limit inrush during programming. Keep traces short and avoid routing analog signals adjacent to the ICSP lines to reduce capacitive coupling into ADC inputs. Reserve a 5-pin header footprint (VPP, PGD, PGC, VSS, VDD) on the PCB even if programming is not required initially - factory firmware updates often need it.
Do not confuse the PIC18LF24J10-I/SS (28-SSOP, 5.30 mm body) with the PIC18LF24J10-I/SO (28-SOIC, 7.50 mm body) - the SS and SO suffixes indicate different packages with different PCB footprints despite sharing the same die. Similarly, do not assume the LF24J10 has USB peripherals - only the PIC18F24J50 and PIC18F46J50 families include USB. Finally, the LF24J10 is rated to 25 MHz max; running at higher clocks requires switching to the PIC18F24J10 (40 MHz) variant.
When using the MSSP module in SPI mode at high speeds (>5 MHz SCK), place a 33 ohm series damping resistor at the SCK output pin to reduce ringing on long traces. For I2C mode, select pull-up resistors between 1 kohm (at 400 kHz Fast Mode) and 4.7 kohm (at 100 kHz Standard Mode) based on bus capacitance - the LF24J10's I2C peripheral supports both speeds per Microchip datasheet DS39682F. Address masking on the I2C peripheral allows hardware filtering of irrelevant slave addresses, reducing CPU interrupt load on multi-node buses.
Compliance Information
RoHS compliant per Microchip product page (PIC18LF24J10 series is lead-free matte-tin finish). Not AEC-Q100 qualified - the PIC18F24J10-I/SS family is commercial/industrial grade; for AEC-Q100 automotive applications use the PIC18F25K80 or PIC18F46K80 with explicit automotive part numbering. REACH status per Microchip compliance letter.
