This document describes the features and characteristics of the enCoRe™ USB CY7C63221/31A product produced by Cypress Semiconductor Corporation.
The enCoRe™ USB CY7C63221/31A is a low‑speed USB peripheral controller that integrates an 8‑bit RISC core, internal 3.3 V regulator, and a crystal‑less oscillator, enabling cost‑effective designs for USB and PS/2 applications. It offers up to 10 configurable GPIO pins, 3 KB of EPROM and 96 bytes of RAM, and supports USB 2.0 low‑speed and HID specifications.
The manual provides a functional overview, logic block diagram, pin assignments, programming model, instruction set summary, memory organization, clocking options, reset behavior, suspend mode, GPIO configuration, USB serial interface engine details, and package information. It also lists absolute maximum ratings, DC and switching characteristics, ordering codes, and package diagrams.
| Operating voltage | 4.0 V to 5.5 VDC |
|---|---|
| Operating temperature | 0 °C to 70 °C |
| EPROM size | 3 KB |
| RAM size | 96 bytes |
| GPIO pins | Up to 10 versatile GPIO pins |
| GPIO current drive | 50 mA per pin (sink) |
| Internal regulator | 3.3 V regulator for USB pull‑up |
| USB specification compliance | USB 2.0 low‑speed, HID 1.1 |
It operates from 4.0 V to 5.5 VDC.
Yes, it has an internal oscillator that removes the need for an external crystal or resonator.