C166SV2 16-bit core at 40 MHz — still in active production
The Infineon SAFXC164TM16F20FBA is a 16-bit Flash microcontroller with a 40 MHz C166SV2 core. The part is intended for legacy industrial control, motor drive, and automation applications where the C166 architecture is already qualified in the BOM. Key features include 47 general-purpose I/O lines, a 14-channel 8/10-bit SAR ADC, serial interfaces (ASC, SPI, SSC, UART/USART), PWM outputs, and a watchdog timer.
Supply voltage and package — board-level fit
A dedicated regulator or LDO is needed if the rest of the board runs at 3.3 V. The device is surface-mount only; the exact package footprint is not listed here, but the 'TM16' suffix in the order code typically indicates a TQFP-16×16 body with 144 pins — verify against the official datasheet before laying out the board.
The SAFXC164TM16F20FBA is listed as Active by Infineon. For a BOM line that already qualifies this part, there is no immediate urgency to find a replacement.