BU38803 - System control servo
They contain a high-speed, 8-bit CPU and perform the processing required for the drum, capstan, FV and PV completely in software, allowing a large reduction in the number of external components required.
They also contain high-performance linear amplifiers, eliminating the need for interface ICs.
Specialized hardware is included for items that require high-speed process
BU38803 Features
* 1) CPU 499 commands (69 types) Memory-mapped I / O Minimum command execution time: 250ns (8MHz) 2)ROM capacity BU38603: 16384 × 8 bit BU38703: 24576 × 8 bit BU38803: 32768 × 8 bit 3) RAM capacity: 512 × 8bit 4) Interrupt Pattern generator: 1 Watch-dog timer: 1 External interrupts: 1 FG int