Infineon Technologies CY7C63001C-SXCT

Overview

CY7C63001C-SXCT from Cypress Semiconductor is an 8-bit RISC OTP microcontroller with integrated low-speed USB 1.1 transceiver, optimized for human-interface devices. It supports one USB device address and two endpoints (control + data), operates at 12 MHz internal clock (driven by 6-MHz ceramic resonator), features 4 Kbytes EPROM and 128 bytes RAM, and delivers up to 12 GPIOs with Schmitt-trigger inputs and programmable sink current - deployed in optical mice and gamepads.

For engineers reviewing the CY7C63001C-SXCT datasheet, CY7C63001C-SXCT pinout, CY7C63001C-SXCT application, or CY7C63001C-SXCT equivalent, key selection criteria include USB 1.5 Mbps compliance, 20-pin SOIC package compatibility, 4.0–5.25 V operation, suspend/wake-up timing via CEXT, and I/O sink-current programmability per pin.

Technical Context

The CY7C63001C integrates a USB Serial Interface Engine (SIE) compliant with USB 1.1 low-speed (1.5 Mbps) specification, supporting only one device address and two endpoints - no bulk/isochronous transfers. Its Harvard architecture executes 35 USB-optimized instructions, with dual stack pointers (PSP/DSP) managing separate program and data memory spaces.

Memory organization includes 4 Kbytes of OTP EPROM (with reset vector at 0x0000 and interrupt vectors occupying first 16 bytes) and 128-byte RAM (upper 16 bytes reserved as dual 8-byte FIFOs for Endpoint 0 and Endpoint 1). The CEXT pin enables RC-based periodic wake-up from suspend mode with sub-256 µs resume latency.

Key Specifications

Pinout & Package

Available in 20-pin SOIC (SOIC-20) package with 0.300-inch body width and standard JEDEC outline. Pin functions validated per Cypress Document #38-08026 Rev. *B.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FT312D and PIC18F14K50, CY7C63001C-SXCT provides lowest BOM count and fastest time-to-market for fixed-function low-speed HID devices, trading flash reprogrammability and full-speed capability for guaranteed USB 1.1 compliance and zero-external-component USB interface.

Availability

CY7C63001C-SXCT is available at Aetrix Electronics and suitable for optical mouse design, USB gamepad production, and industrial HMI panel manufacturing requiring stable component supply and long-term lifecycle assurance.

Supply support for CY7C63001C-SXCT 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) designs mixed-signal ICs for USB, memory, and programmable systems, headquartered in San Jose, CA.

CY7C63001C belongs to Cypress's legacy USB microcontroller product line, engineered specifically for cost-sensitive, low-power human-interface devices requiring minimal external components and guaranteed USB 1.1 compliance.

FAQ

Does CY7C63001C-SXCT support USB full-speed (12 Mbps) operation?

No. The CY7C63001C-SXCT implements only USB 1.1 low-speed (1.5 Mbps) functionality. It lacks full-speed transceiver circuitry, does not support the required SE0 timing for full-speed reset detection, and has no hardware support for ping-pong buffers or high-bandwidth endpoints. Its USB SIE is hardwired for low-speed signaling only.

Can the 4 Kbytes EPROM be reprogrammed in-circuit?

No. The CY7C63001C-SXCT uses One-Time Programmable (OTP) EPROM. Programming occurs only once during manufacturing using VPP = 12.5 V at Pin 8. There is no in-system or field reprogramming capability. Firmware changes require replacement of the physical device.

What is the maximum sink current per P1.x pin, and is it configurable?

Each P1.0–P1.3 pin supports up to 20 mA sink current, adjustable in 16 discrete levels via dedicated I/O registers (P1 Isink at addresses 0x38–0x3B). This allows precise LED brightness control or direct driving of small solenoids without external current-limiting resistors or transistors.

How is the CEXT pin used for wake-up from suspend mode?

The CEXT pin is an open-drain output with Schmitt-trigger input. When configured for wake-up, it connects to an external RC network (e.g., 1 MΩ + 100 nF). During suspend, the internal capacitor charges; when voltage crosses the Schmitt threshold, it triggers an interrupt and exits suspend. Timing is determined solely by external R and C values.