PIC18LF24J10T-I/ML - 8-bit 40MHz 16KB Flash MCU 28-QFN | Microchip
MPN: PIC18LF24J10T-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.36 | $43.60 |
| 100 | $3.78 | $378.00 |
| 500 | $3.32 | $1,660.00 |
| 1,000 | $2.91 | $2,910.00 |
PIC18LF24J10T-I/ML Overview
A PIC microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash), working memory (RAM), and peripheral interfaces into one package. The PIC18 family sits in the middle of Microchip's 8-bit line, using an enhanced RISC architecture that executes one instruction per clock cycle (four in most), giving deterministic timing that is valuable for real-time control, sensor reading, and protocol bit-banging. The PIC18J sub-series is specifically designed for full-speed USB and high-throughput serial designs running at 3 V rails.
Key features of the PIC18LF24J10 include 1024 bytes of RAM, hardware USB 2.0 full-speed with on-chip transceiver, two enhanced USARTs (one with LIN master/slave capability), two MSSP ports supporting SPI and I2C with address masking, a 10-bit ADC with up to 10 channels, and nanoWatt power management for sleep currents below 1 uA. The integrated USB peripheral removes the need for an external transceiver, reducing BOM cost and board area.
The PIC18LF24J10 architecture uses a 16-bit modified Harvard structure: separate code and data paths, a hardware multiply, and a 31-level-deep stack. The on-chip regulator allows single-supply 3.3 V operation while preserving the speed advantage of 40 MHz, and the nanoWatt technology provides multiple power-managed modes (Idle, Sleep, and deep Sleep with RTCC) for battery-powered nodes.
Typical applications include USB peripherals (HID class devices, CDC serial bridges, mass storage), sensor hubs with I2C/SPI expansion, low-cost industrial controllers, and consumer devices such as gaming peripherals, remote controls, and home-automation endpoints. The wide 2.0 V-3.6 V operating range and low-power modes also make it suitable for battery-powered handheld instruments.
When designing with this part, verify that the application does not require the wider 5 V PIC18F24J10 variant - the LF letter indicates the 3.3 V-only core. Plan board layout for the QFN thermal pad, which must be soldered to a continuous ground plane for both electrical performance and thermal dissipation.
This page synthesizes distributor pricing, drop-in alternatives drawn from the same PIC18J family, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC18LF24J10T-I/ML — 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 PIC18LF24J10T-I/ML (same form factor and footprint) — differing in Package, Timers, I/O Pins, ADC, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F24J10T-I/ML
✅ Drop-In✓ In Stock
$2.05 / Unit
View Datasheet →PIC18LF24J10-I/ML
✅ Drop-In✓ In Stock
$2.62 / Unit
View Datasheet →PIC18LF24J10-I/SO
✅ Drop-In✓ In Stock
$1.91 / Unit
View Datasheet →PIC18LF24J10-I/SS
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC18LF24J10-I/SP
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC18LF24J10T-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC18 enhanced RISC |
| Core Frequency | 40 MHz (10 MIPS) |
| Program Memory (Flash) | 16 KB (8K x 16) |
| RAM | 1024 bytes |
| Operating Voltage Range | 2.0 V to 3.6 V |
| ADC | 10-bit, up to 10 channels |
| USB | USB 2.0 full-speed with on-chip transceiver |
| USART | 2x Enhanced USART (one LIN-capable) |
| MSSP (SPI/I2C) | 2 ports with I2C address masking |
| Timers | 4x 8/16-bit timers |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 28-QFN (ML) 6x6 mm |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
PIC18LF24J10T-I/ML Pin Configuration
| Pin 1 | RA0/AN0 — Digital I/O / analog input 0 |
| Pin 2 | RA1/AN1 — Digital I/O / analog input 1 |
| Pin 3 | RA2/AN2/VREF- — Digital I/O / analog input 2 / ADC VREF- |
| Pin 4 | RA3/AN3/VREF+ — Digital I/O / analog input 3 / ADC VREF+ |
| Pin 5 | RA4 — Digital I/O / Timer0 clock input |
| Pin 6 | RA5/AN4 — Digital I/O / analog input 4 |
| Pin 7 | RA6 — Digital I/O / oscillator output |
| Pin 8 | RA7 — Digital I/O / oscillator input |
| Pin 9 | VSS — Ground reference |
| Pin 10 | RB0/AN10 — Digital I/O / analog input 10 / interrupt-on-change |
| Pin 11 | RB1/AN8 — Digital I/O / analog input 8 |
| Pin 12 | RB2/AN9 — Digital I/O / analog input 9 |
| Pin 13 | RB3/AN11 — Digital I/O / analog input 11 |
| Pin 14 | RB4 — Digital I/O / interrupt-on-change |
| Pin 15 | RB5 — Digital I/O / interrupt-on-change / MSSP2 |
| Pin 16 | RB6/PGC — Digital I/O / ICSP clock / interrupt-on-change |
| Pin 17 | RB7/PGD — Digital I/O / ICSP data / interrupt-on-change |
| Pin 18 | VDD — Positive supply voltage |
| Pin 19 | VSS — Ground reference |
| Pin 20 | RC0 — Digital I/O / MSSP1 clock output |
| Pin 21 | RC1 — Digital I/O / MSSP1 data |
| Pin 22 | RC2 — Digital I/O / MSSP1 transmit |
| Pin 23 | RC3 — Digital I/O / MSSP1 receive / USB D- (alternate) |
| Pin 24 | RC4 — Digital I/O / USB D+ |
| Pin 25 | RC5 — Digital I/O / USB D- |
| Pin 26 | RC6/TX1 — Digital I/O / EUSART1 asynchronous transmit |
| Pin 27 | RC7/RX1 — Digital I/O / EUSART1 asynchronous receive |
| Pin 28 | VDDCORE/VCAP — Internal regulator output (decoupling capacitor) |
Typical Applications
PIC18LF24J10T-I/ML is suitable for 7 applications: USB HID Peripheral Device, Sensor Hub with I2C/SPI Expansion, Battery-Powered Handheld Instruments, Industrial Control Module, USB CDC Serial Bridge, Home Automation Endpoint, Consumer Remote Control.
USB HID Peripheral Device
The PIC18LF24J10T-I/ML fits USB HID designs because its on-chip USB 2.0 full-speed transceiver and integrated 3.3 V regulator eliminate the external PHY typically required, while 16 KB of Flash holds the HID class stack plus application code. With 40 MHz operation the device polls USB endpoints at 1 ms intervals with ample headroom for HID reports of buttons, sensors, or pointer data. Designers route the on-chip USB D+/D- pins directly to the connector through 15 kohm pull-down resistors. Compared with discrete USB chips plus an external 8-bit MCU, this PIC part reduces BOM by one IC and several passives.
Recommended
Sensor Hub with I2C/SPI Expansion
The PIC18LF24J10T-I/ML suits I2C/SPI sensor hubs because two MSSP ports allow simultaneous management of two sensor buses, with the on-chip I2C address masking simplifying multi-slave polling. The 40 MHz core processes sensor fusion, calibration, and host-side UART output at 10 MIPS. The 10-bit ADC handles analog channels alongside the digital sensors, reducing the need for an external ADC. Designers use I2C for low-speed environmental sensors and SPI for higher-rate motion or color sensors, both controlled by the PIC18LF firmware's lack of external glue logic.
Recommended
Battery-Powered Handheld Instruments
The PIC18LF24J10T-I/ML fits battery-powered handheld instruments because its 2.0 V to 3.6 V supply range supports direct Li-ion or 2xAA operation, and nanoWatt technology provides sleep currents below 1 uA in Deep Sleep with RTCC. The 16 KB Flash stores logger firmware with time stamps, while 1024 bytes RAM buffers readings between transmissions. The PIC18LF's wide operating voltage and low quiescent current suit energy-harvesting designs where every microampere counts. Estimated: typical 3.3 V active current is around 12 mA at 40 MHz, dropping to less than 1 uA in sleep.
Recommended
Industrial Control Module
The PIC18LF24J10T-I/ML fits industrial control modules because its -40C to +85C industrial temperature range and enhanced USART (one LIN-capable) support industrial protocols including LIN bus, RS-232, and RS-485 with external transceiver. The 10-bit ADC with up to 10 channels reads analog sensor inputs, while digital I/O drives relays or solid-state switches. Its 16 KB Flash stores Modbus stacks plus control logic. The PIC18J industrial-grade supply chain provides long-term availability for industrial applications.
Recommended
USB CDC Serial Bridge
The PIC18LF24J10T-I/ML fits USB-to-UART bridge designs because its on-chip USB device and dual enhanced USARTs allow firmware to enumerate as a virtual COM port while forwarding bytes to an external UART. The 16 KB Flash holds the USB CDC stack plus bridge logic with ample headroom, and the 40 MHz core sustains 921600 baud without bottleneck. The exposed-pad QFN provides thermal dissipation during continuous high-throughput bridging. The PIC18LF's integrated USB peripheral removes the external FTDI chip from classic bridge designs.
Recommended
Home Automation Endpoint
The PIC18LF24J10T-I/ML fits home-automation endpoints because its low-power 3.3 V operation supports battery-powered door/window sensors, temperature nodes, and PIR detectors reporting over RF or USB. The 16 KB Flash supports Zigbee or LoRa stack plus sensor processing, while the 10-bit ADC handles analog light or temperature sensors. The PIC18LF's nanoWatt sleep modes extend battery life beyond one year for intermittent-reporting devices.
Recommended
Consumer Remote Control
The PIC18LF24J10T-I/ML fits consumer remote controls because its low-cost QFN package, low sleep current, and wide 2.0 V to 3.6 V supply range suit coin-cell or 2xAAA operation. The 10-bit ADC supports IR receiver analog input, while the MSSP ports drive IR LEDs or RF modules. The 16 KB Flash stores IR protocol tables plus user-defined macros. The PIC18LF's small footprint simplifies compact remote PCBs.
Recommended
Recommended Products Summary
Engineering reference data for PIC18LF24J10T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F24J10T-I/ML | PIC18LF24J10-I/ML | PIC18LF24J10-I/SO | PIC18LF24J10-I/SS | PIC18LF24J10-I/SP |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-QFN (ML) 6x6 mm | 28-QFN (ML) 6x6 mm - same | 28-QFN (ML) 6x6 mm - same | 28-QFN (ML) 6x6 mm - same | 28-QFN (ML) 6x6 mm - same | 28-QFN (ML) 6x6 mm - same |
| Core Frequency | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) |
| Program Memory (Flash) | 16 KB (8K x 16) | 16 KB (8K x 16) | 16 KB (8K x 16) | 16 KB (8K x 16) | 16 KB (8K x 16) | 16 KB (8K x 16) |
| RAM | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes |
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 5.5 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
| On-Chip USB | USB 2.0 full-speed with transceiver | USB 2.0 full-speed with transceiver | USB 2.0 full-speed with transceiver | USB 2.0 full-speed with transceiver | USB 2.0 full-speed with transceiver | USB 2.0 full-speed with transceiver |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Tape and Reel | Yes (T suffix) | Yes (T suffix) | No (tray/tube) | No (tube) | No (tube) | No (tube) |
Key Differentiators
- Same-package family upgrade to 5 V tolerance without re-layout (vs PIC18F24J10T-I/ML)
- PIC18J family on-chip USB eliminates external PHY (vs PIC18F452-I/P)
- QFN (ML) 6x6 mm with 28 pins enables compact USB-detectable hardware (vs PIC18F452-I/P (40-pin PDIP))
- Industrial -40C to +85C temperature rating with active lifecycle (vs PIC18LF13K22T-I/SO)
Design Notes
The 28-QFN (ML) 6x6 mm package has an exposed thermal pad underneath (pin 29 typically used as the ground pad). This pad must be soldered to a continuous, unbroken ground plane on the top layer with at least 8 to 12 thermal vias to the inner ground plane. Skipping the thermal pad solder connection causes the part to run hot and increases the risk of intermittent USB or analog failures at elevated temperatures.
Place a 1 uF to 10 uF low-ESR decoupling capacitor on VDD (pin 18) as close as possible to the pin with a short, wide trace. The internal regulator output VCAP (pin 28) requires its own 1 uF to 4.7 uF decoupling capacitor to ground. Estimate: when USB is active, VDD draws bursts up to 25 mA during transmit; insufficient decoupling will cause VDD droop and USB packet errors.
Route the USB D+ (RC4) and D- (RC5) lines as a 90-ohm differential pair from the PIC18LF24J10 to the USB connector. Keep the pair length matched within 150 mil, and avoid routing near high-frequency switching signals. A 15 kohm pull-down resistor on each line is required for full-speed USB detection per the USB 2.0 specification.
Do not confuse the LF (3.3 V only) and F (2.0 V to 5.5 V) variants: PIC18LF24J10T-I/ML cannot operate above 3.6 V, and applying 5 V will permanently damage the silicon. When migrating firmware between LF and F, verify that analog references, ADC thresholds, and oscillator configurations stay within the LF supply window. Also note the QFN exposed pad must not be left floating for thermal relief.
Place the 40 MHz primary oscillator (HS mode) crystal and its load capacitors within 0.5 inch of the OSC1/OSC2 pins (RA7/RA6) and shield the traces with a ground guard ring. Estimated: stray capacitance beyond 5 pF can shift the load capacitance enough to mis-tune the oscillator, causing intermittent USB enumeration at temperature extremes.
Compliance Information
RoHS compliance per Microchip product page and DigiKey listing. Not AEC-Q100 qualified; this part is targeted at industrial and consumer segments, not automotive.
