The CY7C630/101C is a familyof 8-bit RISC One Time Programmable (OTP) microcontrollers with a built-in 1.5-Mbps USB Serial Interface Engine (SIE). The microcontroller features 35 instructions thatare optimized for USB applications. In addition, the microcontroller features 128 bytes of internal RAM and 4 Kbytes of program memory space. The Cypress USB Controller accepts a 6-MHz ceramic resonator as its clock source. This clock signal is doubled within the chip to provide a 12- MHz clock for the microprocessor.