40 MHz 8-bit PIC with 32 KB Flash — active, no LTB risk
The Microchip PIC18F25J10-I/ML is an 8-bit PIC® 18J series microcontroller running at 40 MHz, with 32 KB (16K x 16) Flash program memory and 1K x 8 RAM. It packs 21 I/O lines, an internal oscillator, and a 10-channel 10-bit ADC into a 28-VQFN exposed-pad package (6x6 mm).
ROHS3 compliance is confirmed, which simplifies EU and global regulatory acceptance without an exemption review.
Package and supply — what the layout engineer needs
The 28-VQFN exposed-pad package (supplier device package 28-QFN, 6x6 mm) requires a thermal-via array under the pad for both heat dissipation and a low-impedance ground return. The supply range is 2.7V to 3.6V — a single 3.3V rail works cleanly, but if the design runs near the 2.7V floor (e.g., battery-backed operation), verify the brown-out reset threshold against the minimum operating voltage.
Connectivity and I/O — 21 pins with standard serial interfaces
The 10-channel 10-bit ADC covers analog inputs like potentiometers, temperature sensors, or current-sense resistors. The PWM module suits LED dimming, small motor drives, or switch-mode power supply control at moderate frequencies.