64 MHz 8-bit core in a 48-VQFN — what the extended temp range means for fit
The Microchip PIC18F55Q43-E/6LX is an 8-bit PIC MCU from the PIC® XLP™ 18F series, clocked at 64 MHz with 32 KB Flash program memory, 2 KB RAM, and 1 KB EEPROM.
Microchip lists the PIC18F55Q43-E/6LX as Active.
32 KB Flash with 1 KB EEPROM — firmware-update and calibration storage
The 32 KB Flash (32K x 8) is sized for moderate-complexity control loops, bootloaders, and protocol stacks. The separate 1 KB EEPROM (1K x 8) holds calibration coefficients, node IDs, and fault logs without wearing the Flash — useful when the product's service life exceeds the Flash endurance on frequent writes. Brown-out detect, low-voltage detect, POR, PWM, and WDT are integrated peripherals, so the design can skip external supervisor ICs for basic watchdog and power-fail handling.