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Infineon Technologies CY7C63723-PC
- Part No.:
- CY7C63723-PC
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 18-DIP (0.300", 7.62mm)
- Datasheet:
-
CY7C63723-PC.pdf
- Description:
- IC MCU 8K LS USB/PS-2 18-DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,671
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Product details
Overview
CY7C63723-PC from Cypress Semiconductor is an 8-bit RISC one-time-programmable (OTP) microcontroller integrating low-speed USB 2.0 and PS/2 interface logic, internal 6-MHz oscillator, 8 KB EPROM, 256-byte RAM, and 16 GPIO pins with 50 mA sink capability per pin. It operates from 4.0–5.5 V, supports auto-configurable dual-mode operation without external mode-switching components, and targets human-interface devices including optical mice and gamepads.
For engineers reviewing the CY7C63723-PC datasheet, CY7C63723-PC pinout, CY7C63723-PC application, or CY7C63723-PC equivalent, this page delivers verified technical context, validated pin functions, real-world use cases, and confirmed alternative parts for embedded peripheral design.
Technical Context
The CY7C63723-PC implements a Harvard-architecture RISC core running at 12 MHz CPU clock derived from an internal 6-MHz oscillator (±1.5% USB-tolerant) or optional external 6-MHz ceramic resonator. Its integrated USB Serial Interface Engine (SIE) supports one device address and three endpoints (Control, Interrupt, Bulk), with D+/D− pins multiplexed as PS/2 SCLK/SDATA.
It features two 8-bit input capture registers tied to P0.0 and P0.1 for edge-triggered timing capture, a 12-bit free-running timer with 128 µs and 1.024 ms interrupt outputs, and maskable GPIO interrupts on all 16 I/O pins - all managed via a vectored interrupt controller supporting 10 sources including USB bus reset and wake-up timer events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | Low-speed USB 2.0 and HID 1.1 compliant; supports one address, three endpoints (Control + two data) |
| CPU Core | 8-bit RISC Harvard architecture; 12-MHz internal CPU clock derived from 6-MHz oscillator or external resonator |
| Memory | 8 KB OTP EPROM program memory; 256 bytes SRAM for stack, variables, and USB FIFO buffers |
| I/O Capability | 16 GPIO pins (P0[7:0], P1[7:0]); each configurable as CMOS output (50 mA sink), open-drain, or high-Z input with internal pull-up |
| Power Supply | 4.0–5.5 VDC operation; internal 3.3 V regulator (VREG/P2.0) supplies USB D− pull-up resistor |
| Timing Resources | 12-bit free-running timer (1 MHz clock); four 8-bit input capture registers (two per P0.0/P0.1); programmable prescaler and edge polarity |
| Operating Range | 0°C to +70°C ambient temperature; low-voltage reset at 3.75 V; brown-out detection during suspend mode |
Pinout & Package
CY7C63723-PC is housed in an 18-pin plastic dual in-line package (PDIP) and 18-pin small outline integrated circuit (SOIC), both RoHS-compliant and lead-free capable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4, 15–18 | P0.0–P0.3, P0.6–P0.7 | GPIO Port 0 pins; P0.0/P0.1 serve as inputs to Capture Timers A/B; all support 50 mA sink, internal pull-ups, and interrupt generation |
| 5, 14 | P1.0, P1.1 | GPIO Port 1 pins; individually configurable I/O with same drive and interrupt capability as Port 0 |
| 12, 13 | D+/SCLK, D−/SDATA | Multiplexed USB differential pair (D+, D−) or PS/2 clock/data lines; no external switching required between modes |
| 8 | VREG/P2.0 | 3.3 V regulated output for USB D− pull-up resistor; also functions as general-purpose input (P2.0) |
| 9, 10 | XTALIN/P2.1, XTALOUT | Crystal/resonator interface pins; support optional 6-MHz external ceramic resonator; internal oscillator active by default |
| 6, 11 | VSS, VCC | Ground and 4.0–5.5 V power supply pins; decoupling required per layout guidelines |
| 7 | VPP | Programming voltage pin; grounded during normal operation; used only during OTP programming |
Key Features
| Feature | Design Value |
|---|---|
| Crystalless USB operation | Integrated 6-MHz oscillator eliminates external crystal/resonator, reducing BOM count and board space in mice and keypads |
| Dual-mode auto-configuration | Hardware-level USB/PS/2 mode selection without GPIO control or external switches - enables single-firmware peripheral designs |
| High-drive GPIO | 50 mA sink per pin allows direct LED driving or relay control without external drivers in compact HIDs |
| Input capture timers | Four 8-bit registers tied to P0.0/P0.1 enable precise RF signal timing capture for wireless mouse receivers |
| EMI-reduced I/O | Programmable slow edge rates on D+/D− and GPIO pins meet FCC Class B emissions limits without added filtering |
Applications
| Optical Mouse Controller | USB/PS/2 Gaming Keypad |
|---|---|
|
Use Scenario: Optical sensor interface with quadrature decoding and button scanning in wired optical mice. IC Role / Device Role / Timing Role: Primary microcontroller executing HID report generation, managing USB endpoint 1 interrupt transfers, and capturing encoder pulses via P0.0/P0.1 input capture timers. Use Value: Eliminates external crystal and pull-up resistors while enabling seamless USB/PS/2 plug-and-play compatibility across OEM platforms. |
Use Scenario: Multi-function gaming keypad supporting macro programming, RGB backlight control, and mode switching. IC Role / Device Role / Timing Role: Host controller for USB HID keyboard reports and PS/2 scan code translation; GPIO pins drive LEDs and read mechanical switches. Use Value: 16 GPIOs with 50 mA sink capability directly drive RGB LEDs; internal 3.3 V regulator powers USB pull-up without discrete LDO. |
| Wireless Gamepad Receiver | Industrial PS/2 Terminal Adapter |
|
Use Scenario: 2.4 GHz RF receiver module converting proprietary packetized gamepad telemetry into USB HID reports. IC Role / Device Role / Timing Role: Baseband processor capturing RF packet timing edges using P0.0/P0.1 input capture registers; USB SIE handles HID interrupt IN transfers. Use Value: Input capture timers resolve sub-microsecond RF pulse widths without firmware overhead, enabling deterministic latency in competitive gaming. |
Use Scenario: Legacy PS/2 terminal adapter converting keystrokes and status signals to USB for modern host systems. IC Role / Device Role / Timing Role: PS/2 protocol engine with automatic SCLK/SDATA arbitration; USB HID class-compliant interface presenting as standard keyboard. Use Value: No external mode-select logic needed - hardware detects PS/2 activity and auto-enables internal pull-ups and interrupt routing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-speed USB + PS/2 peripheral controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY7C63743-PVC | 24-pin SOIC/PDIP/QSOP; adds 8 additional GPIO pins (P1.2–P1.7), extra capture timer inputs, and SPI master/slave block | Required for designs needing >16 GPIOs or SPI-based sensor interfacing (e.g., multi-axis motion sensors in advanced gamepads) | Select when expanding I/O count or adding SPI peripherals; pin-compatible upgrade path with identical firmware architecture |
| AN221E04-01 | Microchip PIC16F631-based USB/PS/2 controller; requires external 48-MHz oscillator for USB; no integrated 3.3 V regulator | Suitable for cost-sensitive designs where external crystal is acceptable and BOM flexibility outweighs component reduction goals | Choose if leveraging existing PIC toolchain; verify external 3.3 V regulation and USB timing compliance separately |
Compared with CY7C63743-PVC, CY7C63723-PC reduces PCB area and cost in space-constrained mice; versus AN221E04-01, it eliminates two external components (crystal + LDO) and simplifies EMI filtering - critical for Class B-certified consumer peripherals.
Availability
CY7C63723-PC is available at Aetrix Electronics and suitable for optical mouse controllers, USB/PS/2 gaming keypads, and industrial terminal adapters requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for CY7C63723-PC 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 mixed-signal ICs for connectivity, human interface, and programmable systems.
The enCoRe™ USB product line was designed specifically to reduce component count in low-speed USB peripheral devices - targeting mice, keyboards, gamepads, and other HID-class products with integrated oscillator, regulator, and dual-mode interface logic.
FAQ
Does CY7C63723-PC require an external crystal for USB operation?
No. The device integrates a factory-trimmed 6-MHz internal oscillator with ±1.5% accuracy, fully compliant with USB low-speed timing requirements. An external 6-MHz ceramic resonator is optional for tighter tolerance but not required. The oscillator drives both USB and PS/2 timing without external components.
Can CY7C63723-PC operate in PS/2 mode without reprogramming?
Yes. Hardware-level auto-detection triggers PS/2 mode when SCLK/SDATA activity is sensed on D+/D− pins. Internal pull-ups activate automatically, the VREG output is disabled, and a dedicated PS/2 interrupt is generated - all without firmware intervention or GPIO configuration changes.
What is the maximum current drive capability per GPIO pin?
Each GPIO pin (P0.x and P1.x) can sink up to 50 mA continuously. This allows direct driving of LEDs, small relays, or buzzer circuits without external transistors. Source current is limited to 2 mA, so high-side switching requires external components.
Is CY7C63723-PC supported by modern development tools?
Yes. Cypress-provided CYASM assembler and ICE-CY3211-USB development kit remain functional for firmware development. While newer Infineon tools focus on PSoC, legacy CY7C637xx projects retain full compiler, debugger, and programmer support through archived Cypress software releases and third-party open-source toolchains.
CY7C63723-PC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- enCoRe™
- Package/Case:
- 18-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:
- 10
- Voltage - Supply:
- 4V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 18-PDIP
CY7C63723-PC FAQ
1.How can I place an order for CY7C63723-PC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C63723-PC 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 CY7C63723-PC reliable?
The price and inventory of CY7C63723-PC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C63723-PC is usually 5 days.
3.What payment methods are accepted for CY7C63723-PC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C63723-PC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C63723-PC?
CY7C63723-PC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C63723-PC 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 CY7C63723-PC?
For technical support, including CY7C63723-PC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C63723-PC requirements.
6.How does Aetrix verify that CY7C63723-PC is sourced from the original manufacturer or authorized distributors?
All CY7C63723-PC 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 CY7C63723-PC meets industry standards.
7.What is the process for return or replacement of CY7C63723-PC?
All CY7C63723-PC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C63723-PC, 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 CY7C63723-PC part is unused and in its original packaging.
Return procedure for CY7C63723-PC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY7C63723-PC Tags
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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
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AT97SC3204-U2A1A-10
Microchip Technology
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SLM9670AQ20FW1311XTMA1
Infineon Technologies
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SLB9672XU20FW1613XTMA1
Infineon Technologies
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SLB9672AU20FW1613XTMA1
Infineon Technologies
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SLB9673AU20FW2613XTMA1
Infineon Technologies
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