Key facts
- Brand
- Cypress
- Model
- CY7C63221
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-04
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Cypress CY7C63221/31A USB Peripheral Controller Manual
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.
Cypress CY7C63221 specifications
| 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 |
Source: Cypress CY7C63221/31A USB Peripheral Controller Manual
All Cypress CY7C63221 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Instruction set, parameters and examples for configuring or programming the device.
Questions answered in these manuals
What voltage range does the CY7C63221/31A operate at?
It operates from 4.0 V to 5.5 VDC.
From: Cypress CY7C63221/31A USB Peripheral Controller Manual
Does the controller include an internal oscillator?
Yes, it has an internal oscillator that removes the need for an external crystal or resonator.
From: Cypress CY7C63221/31A USB Peripheral Controller Manual