This document describes the features and characteristics of the low-speed high I/O, 1.5-Mbps USB controllers CY7C63413C, CY7C63513C, and CY7C63613C, developed by Cypress Semiconductor Corporation. These controllers are suitable for low-speed applications with high I/O requirements, such as keyboards, keyboards with integrated pointing devices, gamepads, and more.
This document provides an overview of the low‑speed high‑I/O USB controllers, describing their compliance with USB 1.1/2.0 and HID specifications, integrated USB transceiver, and 8‑bit RISC microcontroller core. It outlines the GPIO capabilities, DAC ports, and power‑on reset, watchdog timer, and interrupt features.
Technical sections cover the programming model, instruction set, memory organization, pin definitions, and I/O register map. Detailed tables list pin assignments, register addresses, and timing characteristics, enabling developers to write firmware for keyboard, gamepad, and other low‑speed peripheral applications.
| Operating voltage | 4.0 V to 5.5 V DC |
|---|---|
| Operating temperature | 0 °C to 70 °C |
| RAM size | 256 bytes |
| EPROM size | 8 KB |
| GPIO pins (CY7C63413C/63513C) | 24 general‑purpose pins |
| Maximum GPIO sink current | 12 mA typical per pin (Port 3) |
| CPU clock | 12 MHz internal |
The controller operates from 4.0 V to 5.5 V DC.
It provides 24 general‑purpose I/O pins across ports 0‑2.
Port 3 pins can sink up to 12 mA typical per pin.
The device includes 256 bytes of internal RAM.