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Infineon Technologies CY7C63743C-PXC
- Part No.:
- CY7C63743C-PXC
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 24-DIP (0.300", 7.62mm)
- Datasheet:
-
CY7C63743C-PXC.pdf
- Description:
- IC MCU 8K LS USB/PS-2 24-DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,447
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Product details
Overview
CY7C63743C-PXC from Cypress Semiconductor is an 8-bit RISC one-time-programmable (OTP) microcontroller integrating low-speed USB 2.0 and PS/2 dual-mode peripheral control, featuring 8 KB EPROM, 256 bytes RAM, internal 6-MHz oscillator, and 16 GPIO pins with 50 mA sink capability per pin. It operates from 4.0–5.5 V at 0°C to 70°C and supports auto-configurable USB/PS/2 mode switching without external components - used in wired/wireless mice, gamepads, and human interface devices.
For engineers reviewing the CY7C63743C-PXC datasheet, CY7C63743C-PXC pinout, CY7C63743C-PXC application, or CY7C63743C-PXC equivalent, key selection criteria include dual-mode USB/PS/2 compatibility, crystalless operation, integrated 3.3V regulator for D– pull-up, 4-channel input capture for RF timing, and maskable GPIO interrupts with edge polarity control.
Technical Context
The CY7C63743C-PXC implements a Harvard-architecture RISC core running at 12 MHz CPU clock (derived from internal 6-MHz oscillator or external resonator), with dedicated USB Serial Interface Engine (SIE) supporting one device address and three endpoints (Control, Interrupt, Bulk). Its dual-mode I/O pins (D+/SCLK and D–/SDATA) switch automatically between USB differential signaling and PS/2 clock/data protocols without firmware reconfiguration or GPIO intervention.
It integrates four 8-bit input capture registers tied to P0.0 and P0.1, each with independent rising/falling edge detection and five prescaler options - enabling precise timing measurement of RF receiver pulses. The internal wake-up timer and brown-out reset (3.75 V) support robust suspend/resume behavior in battery-powered peripherals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | USB 2.0 Low-Speed (1.5 Mbps); HID v1.1 compliant - enables plug-and-play enumeration on Windows/macOS/Linux without custom drivers. |
| Memory | 8 KB OTP EPROM + 256 bytes RAM - sufficient for full HID report descriptor, USB descriptor tables, and PS/2 protocol stack in single-firmware implementation. |
| GPIO Capability | 16 programmable I/O pins (P0[7:0], P1[7:0]); 50 mA sink per pin - drives LEDs, switches, and small solenoids directly without external buffers. |
| Input Capture | Four 8-bit registers (two per P0.0/P0.1); edge-selectable rising/falling capture - measures pulse widths from 250 ns to 256 µs for wireless remote decoding. |
| Power Supply | 4.0–5.5 V DC operation with internal 3.3 V regulator on VREG/P2.0 - powers external 1.3 kΩ USB D– pull-up resistor and eliminates need for LDO. |
| Timing Source | Internal 6-MHz ±1.5% oscillator (USB-tuned) or optional 6-MHz ceramic resonator - removes crystal, reduces BOM count and EMI emissions. |
| Interrupt Sources | 10 maskable vectored interrupts including USB bus reset, endpoint completion, capture events, GPIO edges, and 128 µs/1.024 ms timers - enables deterministic real-time response. |
Pinout & Package
CY7C63743C-PXC is available in 24-pin SOIC, PDIP, and QSOP packages. All variants share identical pin mapping and electrical characteristics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D+/SCLK (Pin 13) | USB D+ / PS/2 Clock | Bidirectional signal: USB differential data line or open-drain PS/2 clock; auto-detected mode; slow edge rate reduces EMI. |
| D–/SDATA (Pin 14) | USB D– / PS/2 Data | Bidirectional signal: USB differential data line or open-drain PS/2 data; includes internal pull-up for PS/2 idle state. |
| VREG/P2.0 (Pin 11) | 3.3 V Regulated Output / GPIO | Provides stable 3.3 V for external 1.3 kΩ D– pull-up; configurable as general-purpose input when regulator disabled. |
| P0.0, P0.1 (Pins 1, 2) | Capture Timer Inputs A/B | Edge-triggered inputs for four 8-bit capture registers; support rising/falling edge selection and five prescaler settings. |
| P0[7:0], P1[7:0] (Pins 1–4, 21–24, 5–8, 17–20) | General Purpose I/O | Individually configurable as CMOS output (50 mA sink), open-drain, pull-up input, or high-Z; all support maskable interrupts. |
| XTALIN/P2.1 (Pin 12) | Oscillator Input / GPIO | Accepts 6-MHz ceramic resonator or external clock; defaults to internal oscillator mode unless external component connected. |
| VCC (Pin 14) | Power Supply | 4.0–5.5 V main supply; decoupling capacitor required at pin for stable USB/PS/2 operation. |
| VSS (Pins 9, 10) | Ground | Dual ground pins reduce noise coupling between analog (USB transceiver) and digital (core/timers) domains. |
Key Features
| Feature | Design Value |
|---|---|
| Crystalless USB Operation | Integrated 6-MHz oscillator tuned to ±1.5% USB timing spec - eliminates crystal, saves PCB area, and reduces cost by ≥$0.15/unit. |
| Dual-Mode Auto-Switching | Hardware-level USB/PS/2 detection on D+/D– pins - no GPIO allocation or firmware polling needed; seamless host negotiation. |
| High-Drive GPIO | 50 mA sink per pin across all 16 I/Os - directly drives RGB LEDs, tactile feedback actuators, or logic-level MOSFET gates without external drivers. |
| RF Pulse Capture | Four independent 8-bit capture registers with edge-selectable triggers - enables accurate decoding of 27/40/315 MHz ASK/OOK remote signals. |
| Low-Power Suspend Wake-Up | Internal wake-up timer generates periodic interrupts during USB suspend - maintains responsiveness while drawing <100 µA. |
Applications
| Gaming Peripherals | Wireless Human Interface Devices |
|---|---|
|
Use Scenario: Wired USB/PS/2 gaming mouse with DPI toggle and macro buttons. IC Role / Device Role / Timing Role: Dual-mode peripheral controller managing HID report generation, button debouncing, and scroll wheel quadrature decoding. Use Value: Single-chip solution eliminates separate USB bridge and PS/2 controller; internal 50 mA GPIO drives RGB status LEDs directly. |
Use Scenario: 2.4 GHz wireless keyboard using proprietary RF protocol and USB/PS/2 dongle compatibility. IC Role / Device Role / Timing Role: Baseband timing controller capturing RF packet preamble duration via P0.0/P0.1 input capture registers. Use Value: Hardware-accelerated pulse width measurement enables sub-millisecond latency decoding without CPU overhead. |
| Industrial Control Panels | Medical Input Devices |
|
Use Scenario: Panel-mounted PS/2 keypad with USB fallback for legacy HMI systems. IC Role / Device Role / Timing Role: Mode-transparent interface controller handling matrix scanning, LED indicators, and hot-plug detection. Use Value: Internal 3.3 V regulator powers USB pull-up; no external LDO required - simplifies compliance with IEC 61000-4-5 surge immunity. |
Use Scenario: FDA-cleared patient input device (e.g., vitals entry pad) requiring dual-host connectivity and ESD-hardened I/O. IC Role / Device Role / Timing Role: Safety-isolated peripheral controller with brown-out reset at 3.75 V and watchdog timer for firmware integrity monitoring. Use Value: Integrated low-voltage reset and WDR ensure deterministic recovery from power dips - meets IEC 62304 SW safety Class B requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-speed USB and PS/2 peripheral controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C63723C-PXCT | 18-pin SOIC/PDIP; only 8 GPIO (P0[7:0]); no P1 port; same core, memory, and USB/PS/2 engine. | Limited I/O count restricts use to simpler peripherals (e.g., basic mice without side buttons or RGB). | Select when board space is constrained and <8 GPIOs suffice; shares same firmware binary with CY7C63743C. |
| AN1181 (Microchip) | 8-bit PIC16F631-based; requires external crystal; no integrated USB transceiver; PS/2 support via software bit-banging. | Higher firmware complexity for USB/PS/2 coexistence; lacks hardware input capture and regulated VREG output. | Choose only if legacy PIC toolchain is mandated; adds ≥3 passive components and increases debug time by ~2 weeks. |
Compared with CY7C63723C-PXCT, CY7C63743C-PXC provides 8 additional GPIOs and full port flexibility for multi-function peripherals; versus AN1181, it delivers hardware-verified USB/PS/2 interoperability, crystalless operation, and integrated timing peripherals - reducing total BOM cost by $0.22 and design cycle time by 3–4 weeks.
Availability
CY7C63743C-PXC is available at Aetrix Electronics and suitable for gaming peripherals, industrial HMI panels, wireless remote dongles, and medical input devices requiring stable component supply and long-term lifecycle support.
Supply support for CY7C63743C-PXC 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 high-performance mixed-signal ICs for USB, memory, and programmable systems, with headquarters in San Jose, CA.
CY7C63743C-PXC belongs to the enCoRe™ USB family - engineered specifically to eliminate external crystals, pull-up resistors, and voltage regulators in low-speed USB/PS/2 human interface devices.
FAQ
Is CY7C63743C-PXC still in active production?
No - Cypress discontinued CY7C63743C-PXC in 2015 and marked it "Not Recommended for New Designs" in datasheet Rev. *D. However, Aetrix Electronics maintains legacy inventory with full traceability and offers extended lifecycle support including obsolescence forecasting and cross-reference guidance for migration paths.
Can CY7C63743C-PXC operate without an external crystal?
Yes - it uses an internal 6-MHz oscillator trimmed to ±1.5% for USB timing compliance. External 6-MHz ceramic resonator is optional for tighter tolerance; no crystal is ever required. The oscillator auto-enables on USB bus activity and supports fast wake-up from suspend mode.
What is the maximum current the VREG/P2.0 pin can supply?
VREG/P2.0 delivers a regulated 3.3 V ±5% at up to 5 mA continuous load - sufficient to bias a standard 1.3 kΩ USB D– pull-up resistor (drawing 2.54 mA). Exceeding 5 mA risks regulation loss and USB enumeration failure.
Does CY7C63743C-PXC support USB interrupt transfers in both modes?
Yes - its USB SIE supports Control, Interrupt, and Bulk endpoints. In USB mode, it handles HID interrupt IN reports (e.g., mouse movement) at up to 10 ms intervals. In PS/2 mode, it emulates PS/2 interrupt behavior via GPIO-driven host polling - no USB interrupt transfer occurs, but functional equivalence is maintained.
CY7C63743C-PXC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- enCoRe™
- Package/Case:
- 24-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Applications:
- USB Microcontroller
- Core Processor:
- M8B
- Program Memory Type:
- OTP (8kB)
- Controller Series:
- CY7C637xx
- RAM Size:
- 256 x 8
- Interface:
- PS/2, USB
- Number of I/O:
- 16
- Voltage - Supply:
- 3.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 24-PDIP
CY7C63743C-PXC FAQ
1.How can I place an order for CY7C63743C-PXC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C63743C-PXC 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 CY7C63743C-PXC reliable?
The price and inventory of CY7C63743C-PXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C63743C-PXC is usually 5 days.
3.What payment methods are accepted for CY7C63743C-PXC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C63743C-PXC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C63743C-PXC?
CY7C63743C-PXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C63743C-PXC 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 CY7C63743C-PXC?
For technical support, including CY7C63743C-PXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C63743C-PXC requirements.
6.How does Aetrix verify that CY7C63743C-PXC is sourced from the original manufacturer or authorized distributors?
All CY7C63743C-PXC 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 CY7C63743C-PXC meets industry standards.
7.What is the process for return or replacement of CY7C63743C-PXC?
All CY7C63743C-PXC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C63743C-PXC, 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 CY7C63743C-PXC part is unused and in its original packaging.
Return procedure for CY7C63743C-PXC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY7C63743C-PXC Tags
-
CYPD3175-24LQXQ
Infineon Technologies
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SLB9672VU20FW1523XTMA1
Infineon Technologies
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SLB9670VQ20FW785XTMA1
Infineon Technologies
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SLB9672XU20FW1523XTMA1
Infineon Technologies
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SLB9673XU20FW2613XTMA1
Infineon Technologies
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CYPD3125-40LQXIT
Infineon Technologies
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AT97SC3204-U2A1A-20
Microchip Technology
-
AT97SC3204-U2A1A-10
Microchip Technology
-
SLM9670AQ20FW1311XTMA1
Infineon Technologies
-
SLB9672XU20FW1613XTMA1
Infineon Technologies
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SLB9672AU20FW1613XTMA1
Infineon Technologies
-
SLB9673AU20FW2613XTMA1
Infineon Technologies
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