Infineon Technologies CY7C63001A-SXC

Overview

CY7C63001A-SXC 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 Port 0 + 4 high-current Port 1 pins). It operates at 12 MHz internal clock derived from a 6-MHz ceramic resonator and targets low-speed human-interface devices including optical mice.

For engineers reviewing the CY7C63001A-SXC datasheet, CY7C63001A-SXC pinout, CY7C63001A-SXC application, or CY7C63001A-SXC equivalent, key selection criteria include USB 1.1 low-speed compliance, OTP programmability, Schmitt-trigger I/O with programmable sink current, suspend/wake-up via CEXT, and 20-pin SOIC package compatibility.

Technical Context

The CY7C63001A-SXC implements a Harvard-architecture RISC core with 35 USB-optimized instructions and supports exactly one USB device address with two endpoints: control (EP0) and data (EP1), each backed by an 8-byte FIFO. Its USB transceiver requires external 1.5-kΩ pull-up on D+ for low-speed enumeration.

It integrates a free-running 8-bit timer, watchdog timer clocked by a 1.024-ms tick, power-on reset circuitry, and Instant-On Now™ suspend mode activated via bit 3 of SCR (0xFF). Wake-up sources are strictly limited to USB activity, GPIO edge interrupts, or CEXT RC timeout - no deep-sleep or RTC functionality is present.

Key Specifications

Pinout & Package

Package: 20-pin SOIC (-SXC suffix), RoHS-compliant, body width 7.5 mm, standard JEDEC MS-013AC footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB peripheral controller applications.

Compared with CY7C63001A-SXC, CY7C63101A-SQC offers expanded I/O in a larger package while preserving identical USB timing and OTP security; AN2131QC trades OTP simplicity for field-programmability at the cost of added external memory and higher system-level complexity.

Availability

CY7C63001A-SXC is available at Aetrix Electronics and suitable for optical mouse design, USB joystick manufacturing, and gamepad production requiring stable component supply and long-term lifecycle support.

Supply support for CY7C63001A-SXC 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 founded in 1982, specializing in programmable system-on-chip (PSoC), USB controllers, and mixed-signal solutions.

The CY7C63xxA product line was designed specifically for cost-sensitive, low-speed USB human-interface devices - delivering integrated SIE, OTP memory, and GPIO optimization to eliminate external components in mouse, joystick, and gamepad designs.

FAQ

Is CY7C63001A-SXC compatible with USB 2.0 hosts?

Yes, it is fully backward-compatible with USB 2.0 and later hosts because it implements only the USB 1.1 low-speed (1.5 Mbps) specification. USB 2.0 hosts include dedicated low-speed controllers and automatically negotiate the correct speed during enumeration - no driver or firmware changes are required.

Can the internal EPROM be reprogrammed after initial programming?

No - the CY7C63001A-SXC contains One-Time Programmable (OTP) EPROM. Once programmed, the memory cannot be erased or rewritten. The security fuse bit, when set, permanently blocks readback of code contents, making it suitable for production firmware with IP protection requirements.

What is the role of the CEXT pin in suspend mode?

The CEXT pin serves as both input and open-drain output for an external RC network that generates a wake-up pulse after suspend. When configured as an input, its Schmitt trigger detects rising edges from the RC decay; when used as an output, it discharges the capacitor to initiate wake-up - enabling precise, hardware-timed resume without CPU involvement.

Does CY7C63001A-SXC support USB remote wakeup?

Yes - it supports USB remote wakeup from suspend mode via three hardware sources: detection of USB bus activity (SE0), any enabled GPIO pin edge interrupt, or the CEXT RC timeout signal. The device asserts resume signaling automatically upon wake event detection; no firmware action is required to initiate the USB resume sequence.