My Inquiry
My Account
Infineon Technologies CY7C63803-SXCT
- Part No.:
- CY7C63803-SXCT
- Manufacturer:
- Infineon Technologies
- Category:
- Controllers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY7C63803-SXCT.pdf
- Description:
- IC USB PERIPHERAL CTRLR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,109
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY7C63803-SXCT from Cypress Semiconductor is an enCoRe™ II 8-bit flash microcontroller with integrated low-speed USB 2.0 and PS/2 peripheral interface, Harvard architecture M8C CPU (up to 24 MHz), 8 KB flash, 256-byte RAM, crystalless internal oscillator ±1.5% accuracy, and dual-mode auto-configuration without external switching components. It targets HID peripherals requiring minimal BOM count and in-system reprogrammability.
For engineers reviewing the CY7C63803-SXCT datasheet, CY7C63803-SXCT pinout, CY7C63803-SXCT application, or CY7C63803-SXCT equivalent, key selection criteria include USB/PS/2 dual-mode auto-detection, 3.3 V I/O compatibility, 20 GPIO with configurable drive strength (2 mA source / 50 mA sink), integrated 3.3 V USB PHY regulator, and 12-bit programmable interval timer with interrupt support.
Technical Context
The CY7C63803-SXCT implements a dedicated low-speed USB Serial Interface Engine (SIE) compliant with USB 2.0 and HID 1.1, supporting one device address, one control endpoint (EP0), and two data endpoints (EP1, EP2). Its internal oscillator dynamically locks to USB timing requirements during traffic, eliminating need for external crystal.
It integrates dual 3.3 V regulators: one dedicated to USB PHY (D– pull-up and signaling), another delivering 125 mA for external 3.3 V peripherals. The device supports automatic mode switching between USB and PS/2 without GPIO control or external logic, using internal state machine detection of bus protocol handshake.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | USB 2.0 Low-Speed (1.5 Mbps), USB-IF certified (TID #40000085) |
| CPU Core | M8C 8-bit Harvard architecture, up to 24 MHz operation with internal oscillator or external 12/24 MHz clock |
| Memory | 8 KB flash (with EEROM emulation), 256 bytes RAM |
| I/O Capability | Up to 20 GPIO pins; 4 pins at 3.3 V logic; configurable 2 mA source / 50 mA sink on designated pins |
| Regulators | Dedicated 3.3 V USB PHY regulator + 125 mA general-purpose 3.3 V regulator |
| Timers | 12-bit programmable interval timer, 16-bit free-running timer, dual-channel 8-bit capture timer (rising/falling edge) |
| Power | 10 mA typical @ 6 MHz; 10 µA sleep current; operates from 4.0–5.5 V |
Pinout & Package
Package: 24-pin SOIC (Small Outline Integrated Circuit), 300 mil width, RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | 4.0–5.5 V main supply; powers core, I/O, and internal regulators |
| VSS | Ground reference | Digital ground common to all circuit blocks |
| USB_D+ | USB differential data line | Low-speed USB data+ signal; internally pulled to 3.3 V via integrated resistor |
| USB_D− | USB differential data line | Low-speed USB data− signal; includes integrated D− pull-up for device enumeration |
| P0.0–P0.7 | General-purpose I/O port | Port 0 pins support CMOS/TTL I/O, open-drain, pull-up, high-Z; P0.2–P0.4 have independent interrupt vectors |
| P1.0–P1.3 | 3.3 V I/O port | 4-pin 3.3 V logic group; compatible with 3.3 V peripherals without level shifters |
| XTAL_IN / XTAL_OUT | External clock interface | Optional 12/24 MHz crystal or clock input; bypassed when internal oscillator enabled |
| RESET | Active-low reset input | Asynchronous reset; also triggered by power-on reset (POR) and low-voltage detect (LVD) |
Key Features
| Feature | Design Value |
|---|---|
| Crystalless USB timing | Internal oscillator achieves ±1.5% accuracy under USB traffic-eliminates external crystal and reduces BOM cost by ≥2 components |
| Auto USB/PS/2 mode detection | Hardware-level protocol recognition enables seamless dual-mode operation without firmware polling or GPIO configuration overhead |
| Integrated USB PHY regulator | Dedicated 3.3 V regulator powers USB transceiver and D− pull-up-ensures stable signaling compliance without external LDO |
| Capture timer for RF inputs | Two-channel 8-bit capture registers store precise rising/falling edge timestamps-enables direct decoding of ASK/OOK wireless signals |
| In-system reprogrammability | Flash memory supports field firmware updates via USB-no external programmer required for production or maintenance |
Applications
| Optical Mouse Interface | Gaming Joystick Control |
|---|---|
Use Scenario: Optical sensor output (quadrature A/B) connected directly to GPIO pins with edge-triggered interrupts. IC Role / Device Role / Timing Role: USB HID peripheral controller handling motion reporting, button debouncing, and USB descriptor management. Use Value: On-chip 16-bit free-running timer and capture registers enable precise velocity calculation without host-side interpolation. | Use Scenario: Analog joystick potentiometer outputs digitized via external ADC, with pushbuttons wired to GPIO interrupt pins. IC Role / Device Role / Timing Role: Dual-mode HID device that enumerates as USB joystick or PS/2 gamepad based on host negotiation. Use Value: Auto-detect eliminates manual mode switch; integrated 3.3 V regulator powers external ADC and LED indicators. |
| Barcode Scanner Engine | Security Dongle Authentication |
Use Scenario: SPI master interface drives optical sensor IC; decoded scan data formatted into HID keyboard reports. IC Role / Device Role / Timing Role: Embedded controller managing sensor timing, data framing, and USB HID keyboard interface. Use Value: SPI master supports up to 4 Mbps-sufficient for real-time image sensor streaming; 8 KB flash stores multi-language keyboard layouts. | Use Scenario: Encrypted challenge-response exchange over USB HID feature reports with secure key storage in flash. IC Role / Device Role / Timing Role: Tamper-resistant authentication token with low-power suspend/wakeup and watchdog-protected firmware execution. Use Value: 10 µA sleep current extends battery life; 12-bit programmable interval timer triggers periodic security checks without external RTC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-speed USB peripheral controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C63802-SXCT | Same die, but 16-pin SOIC package; fewer GPIO (14 total), no 3.3 V I/O pins | Limited I/O count restricts use in multi-button or multi-sensor HID designs | Select when board space is constrained and 3.3 V interfacing is unnecessary |
| CY7C63804-SXCT | Same package and I/O count, but adds 125 mA 3.3 V regulator with thermal shutdown protection | Enhanced safety margin for driving higher-current external peripherals (e.g., RGB LEDs, small solenoids) | Select when powering >50 mA external loads beyond USB PHY requirements |
Compared with CY7C63802-SXCT, CY7C63803-SXCT provides four 3.3 V I/O pins and full 20-GPIO capability-critical for mixed-voltage sensor integration. Versus CY7C63804-SXCT, it omits thermal shutdown but maintains identical timing, memory, and USB functionality-ideal for cost-sensitive, thermally stable environments.
Availability
CY7C63803-SXCT is available at Aetrix Electronics and suitable for optical mouse interfaces, gaming joystick controllers, barcode scanner engines, and security dongles requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for CY7C63803-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 programmable system-on-chip solutions for USB, analog, and mixed-signal applications, with global R&D and manufacturing infrastructure.
The enCoRe™ II product line targets cost-sensitive, low-power USB peripheral devices-specifically engineered to reduce external component count while maintaining full USB-IF certification and dual-mode HID interoperability.
FAQ
Does CY7C63803-SXCT require an external crystal for USB compliance?
No. The device features a crystalless internal oscillator that achieves ±1.5% accuracy during active USB traffic, satisfying USB 2.0 Low-Speed timing requirements without external crystal or resonator. An external 12 MHz or 24 MHz clock may be used for tighter tolerance, but is optional.
Can CY7C63803-SXCT operate in both USB and PS/2 modes simultaneously?
No. It supports automatic single-mode detection at enumeration time-either USB or PS/2-but not concurrent operation. The mode is determined by host-initiated protocol handshake; firmware does not manage mode switching, and no GPIO pins are consumed for mode selection.
What is the maximum sink current per GPIO pin on CY7C63803-SXCT?
Designated pins (P0.0–P0.3, P1.0–P1.3) support configurable sink current up to 50 mA per pin. All other GPIO pins default to 2 mA sink. Source current is fixed at 2 mA across all GPIO pins. Drive strength is configured per-port via register settings.
Is in-system programming supported via USB without additional hardware?
Yes. The device includes a factory-programmed bootloader that enables full flash reprogramming over USB using standard HID class requests-no external programmer, debug header, or JTAG interface is required for field firmware updates.
CY7C63803-SXCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Programmable:
- Verified
- Protocol:
- USB
- Function:
- Controller
- Interface:
- GPIO, SPI
- Standards:
- USB 2.0
- Voltage - Supply:
- 4V ~ 5.5V
- Current - Supply:
- 40mA
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-SOIC
- Grade:
- -
- Qualification:
- -
CY7C63803-SXCT FAQ
1.How can I place an order for CY7C63803-SXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C63803-SXCT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CY7C63803-SXCT reliable?
The price and inventory of CY7C63803-SXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C63803-SXCT is usually 5 days.
3.What payment methods are accepted for CY7C63803-SXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C63803-SXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C63803-SXCT?
CY7C63803-SXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C63803-SXCT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CY7C63803-SXCT?
For technical support, including CY7C63803-SXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C63803-SXCT requirements.
6.How does Aetrix verify that CY7C63803-SXCT is sourced from the original manufacturer or authorized distributors?
All CY7C63803-SXCT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY7C63803-SXCT meets industry standards.
7.What is the process for return or replacement of CY7C63803-SXCT?
All CY7C63803-SXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C63803-SXCT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CY7C63803-SXCT part is unused and in its original packaging.
Return procedure for CY7C63803-SXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY7C63803-SXCT Tags
-
PTN5150AHXMP
NXP USA Inc.
-
USB3740B-AI9-TR
Microchip Technology
-
USB3740B-AI2-TR
Microchip Technology
-
USB3300-EZK-TR
Microchip Technology
-
USB3300-EZK
Microchip Technology
-
FUSB340TMX
onsemi
-
FUSB302BMPX
onsemi
-
DP83826IRHBR
Texas Instruments
-
MCP2518FDT-E/QBB
Microchip Technology
-
FUSB302MPX
onsemi
-
MCP2518FDT-E/SL
Microchip Technology
-
FT260Q-R
FTDI, Future Technology Devices International Ltd
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
