SyncMOS Technologies Inc. May 2001 SM89516 8 - Bi.
SM89516 - 8 Bit MicroController
SyncMOS Technologies Inc. May 2001 SM89516 8 - Bit Micro-controller with 64KB flash & 1KB RAM embedded Product List SM89516L25, 25 MHz 64KB internal.SM89516A - 8-Bit Micro-controller
SyncMOS Technologies Inc. SM89516A September 2002 Product List SM89516AL25, 25MHz 64KB internal flash MCU SM89516AC25, 25MHz 64KB internal flash MCU.