Brown-out detect and POR are integrated, reducing external supervisor IC cost.
For a BOM line that must stay with the 100-LQFP footprint and CANbus peripheral set, procurement will need to qualify surplus stock against date code and condition — sealed reels with consistent date codes are preferred over mixed-date auction lots.
Package and peripheral assignment — 100-LQFP with 56 I/O
Housed in a 100-LQFP (14x14 mm) package, this MCU exposes 56 I/O pins. That is a relatively low I/O count for the package size — many pins are dedicated to power, ground, and the multiple serial interfaces. The 4-channel 10-bit ADC shares pins with GPIO, so analog and digital functions must be allocated during layout. An internal oscillator trims the external component count, though a crystal can be added for tighter timing on CANbus bit timing.