Functional Overview
The CY7C630/101A is a family of 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 that are optimized for USB applications. In addition, the microcontroller features 128 bytes of internal RAM and four 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.

FEATUREs
• Low-cost solution for low-speed USB peripherals such as mouse, joystick, and gamepad
• USB Specification Compliance
   — Conforms to USB 1.5-Mbps Specification, Version 1.1
   — Supports one device address and two endpoints (one control endpoint and one data endpoint)
• 8-bit RISC microcontroller
   — Harvard architecture
   — 6-MHz external ceramic resonator
   — 12-MHz internal operation
   — USB optimized instruction set
• Internal memory
   — 128 bytes of RAM
   — 4 Kbytes of EPROM
   — Integrated USB transceiver
   — Up to 16 Schmitt trigger I/O pins with internal pull-up
   — Up to eight I/O pins with LED drive capability
   — Special purpose I/O mode supports optimization of photo transistor and LED in mouse application
   — Maskable Interrupts on all I/O pins
• 8-bit free-running timer
• Watchdog timer (WDT)
• Internal power-on reset (POR)
• Instant-On Now™ for Suspend and Periodic Wake-up Modes
• Improved output drivers to reduce EMI
• Operating voltage from 4.0V to 5.25 VDC
• Operating temperature from 0–70°C
• Available in space saving and low-cost 20-pin PDIP, 20-pin SOIC, and 24-pin QSOP packages
• Industry-standard programmer support