Infineon Technologies CY7C63001A-SC

Overview

CY7C63001A-SC from Cypress Semiconductor is an 8-bit RISC USB microcontroller with integrated 1.5-Mbps USB Serial Interface Engine (SIE), 4 Kbytes EPROM, 128 bytes RAM, and 12 GPIOs (8 low-current P0 + 4 high-current P1). It operates at 12 MHz internal clock derived from a 6-MHz ceramic resonator and supports one device address with two endpoints (control + data) for low-speed USB human-interface devices.

For engineers reviewing the CY7C63001A-SC datasheet, CY7C63001A-SC pinout, CY7C63001A-SC application, or CY7C63001A-SC equivalent, key selection considerations include OTP programmability, built-in USB transceiver compliance with USB 1.1 low-speed specification, Schmitt-trigger I/O with programmable sink current, Instant-On Now™ suspend/wake-up capability, and 20-pin SOIC package compatibility with industry-standard programmers.

Technical Context

The CY7C63001A-SC implements a Harvard-architecture RISC core with 35 USB-optimized instructions and dual-stack pointers (PSP/DSP) for efficient firmware execution. Its USB SIE handles token, data, and handshake phases autonomously, reducing CPU overhead during enumeration and data transfer.

Memory organization separates 4 Kbytes of OTP EPROM (with 16-byte interrupt vector table) from 128-byte RAM, where upper 16 bytes are reserved as dual 8-byte FIFOs for Endpoint 0 and Endpoint 1. The CEXT pin enables RC-based periodic wake-up from suspend mode via edge-triggered interrupt.

Key Specifications

Pinout & Package

Package: 20-pin SOIC (-SC suffix), footprint-compatible with PDIP variant; lead-free RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB HID microcontroller applications.

Compared with CY7C63101A-SC, the CY7C63001A-SC offers identical USB engine, memory, and timing features but with reduced I/O count for cost-sensitive mouse/keypad designs; versus FT230X, it provides full embedded HID firmware execution without host-side driver dependencies.

Availability

CY7C63001A-SC is available at Aetrix Electronics and suitable for optical mouse development, USB gamepad production, and industrial keypad manufacturing requiring stable component supply and long-term lifecycle support.

Supply support for CY7C63001A-SC includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Cypress Semiconductor (now part of Infineon Technologies) is a fabless semiconductor company specializing in USB, memory, and programmable system-on-chip solutions for embedded interfaces.

The CY7C63xxA product line was designed specifically for cost-sensitive, low-speed USB human-interface peripherals - integrating USB SIE, RISC core, and I/O drivers into a single OTP-programmable chip to eliminate external components.

FAQ

What USB specification versions does the CY7C63001A-SC support?

The CY7C63001A-SC fully complies with USB Specification Version 1.1 for low-speed (1.5 Mbps) operation. It implements all mandatory requirements including SE0 detection, reset signaling, token parsing, and endpoint 0 control transfers. It does not support full-speed (12 Mbps) or later USB revisions.

Can the CY7C63001A-SC be reprogrammed after initial OTP programming?

No - the CY7C63001A-SC uses One-Time Programmable EPROM. Once programmed, code cannot be erased or rewritten. The security fuse bit, when set, outputs 0xFF during read attempts to protect firmware. Development requires careful validation before final programming.

How does the CEXT pin enable wake-up from USB suspend mode?

The CEXT pin functions as an open-drain output with Schmitt-trigger input. When connected to an external RC network, it generates a rising-edge interrupt after a time delay determined by R × C. This interrupt exits suspend mode autonomously, allowing periodic polling or sensor sampling without host-initiated resume.

What is the maximum sink current per P1 pin, and how is it configured?

Each P1 pin supports up to 20 mA sink current, adjustable in 16 discrete levels via dedicated I/O registers (0x38–0x3F). Configuration is done through firmware writes to the P1 Isink registers - enabling precise LED current control and EMI reduction by limiting di/dt during switching.