Found 5 alternatives for XS1-L8A-64-LQ64-C5 by XMOS. Embedded Microcontrollers — 64-LQFP Exposed Pad.
16-BIT C166 MCU - XC2300 FAMILY
IC MCU 16/32B 320KB FLASH 64LQFP
IC MCU 16/32B 320KB FLASH 64LQFP
IC MCU 32BIT 64KB SRAM 64LQFP
IC MCU 16BIT 32KB FLASH 64LQFP