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Infineon Technologies CY8C24393-24LQXI
- Part No.:
- CY8C24393-24LQXI
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
CY8C24393-24LQXI.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,844
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Product details
Overview
CY8C24393-24LQXI from Infineon Technologies (formerly Cypress) is a PSoC® 1 programmable system-on-chip integrating an M8C CPU, configurable analog/digital peripherals, full-speed USB 2.0, and up to 36 GPIOs in a 48-pin QFN package. It operates from 1.71 V to 5.5 V, supports –40 °C to +85 °C industrial temperature range, and delivers 24 MHz CPU performance with 8 KB flash and 1 KB SRAM.
For engineers reviewing the CY8C24393-24LQXI datasheet, CY8C24393-24LQXI pinout, CY8C24393-24LQXI application, or CY8C24393-24LQXI equivalent, key selection criteria include USB endpoint count (8 unidirectional + 1 bidirectional), low-power sleep modes (0.1 μA deep sleep), 10-bit ADC with internal reference, dual comparators with 0.8/1.0/1.2 V references, and I²C/SPI timing compatibility at up to 400 kHz and 12 MHz respectively.
Technical Context
The CY8C24393-24LQXI implements a Harvard-architecture M8C core with dedicated instruction and data buses, enabling deterministic real-time execution. Its analog system includes a programmable analog mux, two low-power comparators (10 µA typical), and a 10-bit incremental ADC with internal voltage reference - all routed via global analog interconnect independent of digital resources.
Digital system resources include three 16-bit programmable timers, watchdog/sleep timers, I²C slave (50/100/400 kHz), SPI master/slave (up to 12 MHz), and a full-speed USB 2.0 interface with dedicated 512-byte SRAM and no external crystal requirement - enabled by the internal 24 MHz IMO and 32 kHz ILO clock sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C Harvard architecture, 24 MHz max - enables deterministic real-time control without instruction/data bus contention. |
| Memory | 8 KB flash (50,000 erase/write cycles) + 1 KB SRAM - supports in-system programming and EEPROM emulation for nonvolatile parameter storage. |
| Power Modes | Deep Sleep: 0.1 μA typ; Standby: 1.1 μA typ - enables battery-powered operation for >10-year runtime in sensor nodes. |
| USB Interface | Full-Speed USB 2.0 (12 Mbps), 8 unidirectional + 1 bidirectional endpoints, dedicated 512-byte SRAM - eliminates need for external PHY or crystal. |
| Analog Peripherals | 10-bit incremental ADC (internal ref), two comparators (0.8/1.0/1.2 V refs), 8-bit IDAC (512 µA full scale) - supports precision threshold detection and analog signal conditioning. |
| I/O Capability | 36 GPIO (dual-mode analog/digital), 25 mA sink per pin (120 mA total), configurable pull-up/HIZ/open-drain - drives LEDs, relays, and sensors directly without external buffers. |
| Clock Sources | Internal main oscillator (6/12/24 MHz), ILO (32 kHz), external 32 kHz crystal, external clock input - enables flexible timing architecture with no external crystal required for USB. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad. Pinout validated per CY8C24X93 datasheet Rev. *D, Page 14 ("48-pin QFN (36 GPIOs (With USB))").
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Single 1.71–5.5 V rail powers entire chip including USB PHY and analog blocks; VSS provides low-noise return path for mixed-signal operation. |
| USB_DP / USB_DM | Full-Speed USB differential pair | Direct connection to USB connector; requires 27 Ω series resistors and 1.5 kΩ pull-up on DP for device enumeration - no external transceiver needed. |
| P0[0]–P0[7], P1[0]–P1[7], P2[0]–P2[7], P3[0]–P3[7], P4[0]–P4[3] | General-purpose I/O | All 36 pins support analog input, digital I/O, comparator inputs, or ADC channel selection - configured dynamically in firmware via PSoC Designer. |
| XIN / XOUT | External 32 kHz crystal interface | Optional low-power timing source for RTC or sleep timer; not required for USB operation due to internal IMO/ILO. |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; compatible with pushbutton or microcontroller-driven reset sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Analog System | Two independent comparators with selectable internal references (0.8/1.0/1.2 V) and direct GPIO routing - enables zero-crossing detection, battery monitoring, and overvoltage protection without external components. |
| USB-Integrated Architecture | Dedicated 512-byte SRAM and hardware USB engine eliminate host-side driver development overhead and reduce BOM cost versus MCU + external USB IC solutions. |
| Low-Power Operation | 0.1 μA deep sleep current with wake-on-comparator or timer event - extends coin-cell life in portable medical or IoT edge devices beyond 5 years. |
| Programmable Digital Peripherals | Three 16-bit timers with capture/compare/PWM modes, plus I²C/SPI controllers - allows implementation of motor control, LED dimming, and sensor communication protocols in firmware without external logic. |
| Flexible I/O Drive Strength | 25 mA sink per GPIO (120 mA total), 5 mA source on ports 0–1 - directly drives RGB LEDs, small solenoids, or optocouplers without discrete drivers. |
Applications
| Industrial Sensor Node | USB Human Interface Device (HID) |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data via USB to gateway. IC Role / Device Role / Timing Role: System controller, analog signal conditioner (ADC/comparators), and USB device endpoint. Use Value: Deep sleep current (0.1 μA) enables multi-year operation on CR2032; integrated USB avoids external transceiver and crystal, reducing PCB area by 35%. |
Use Scenario: Programmable mechanical keyboard with per-key RGB backlighting and macro support. IC Role / Device Role / Timing Role: HID-class USB device controller, GPIO expander, and PWM generator for LED dimming. Use Value: 36 GPIOs route to matrix scan lines and LED anodes; 8-bit software PWM and IDAC provide precise color mixing without external LED drivers. |
| Smart Home Thermostat | Medical Patient Monitor Front-End |
|
Use Scenario: Wall-mounted HVAC controller with ambient sensing, display interface, and local USB configuration port. IC Role / Device Role / Timing Role: Main system MCU, analog front-end for thermistor/NTC reading, and USB CDC interface for firmware updates. Use Value: Internal LDO provides high PSRR for clean analog measurements; 10-bit ADC with internal reference eliminates need for external precision voltage reference. |
Use Scenario: Portable ECG lead-off detector and signal conditioner feeding data to host processor. IC Role / Device Role / Timing Role: Analog acquisition node with comparator-based lead-off detection and USB streaming interface. Use Value: Dual comparators monitor electrode impedance in real time using 0.8 V reference; USB bulk transfer ensures low-latency streaming at 1 kHz sampling rate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C24493-24LQXI | 16 KB flash / 2 KB SRAM vs. 8 KB / 1 KB; identical package, pinout, and peripheral set. | Required when firmware exceeds 8 KB or additional RAM is needed for USB buffer or complex state machines. | Select if project memory footprint exceeds 7.5 KB after toolchain overhead and requires future firmware scalability. |
| CY8C24293-24LQXI | No USB interface; same M8C core, memory, and analog/digital peripherals otherwise. | Suitable for cost-sensitive designs where USB is unnecessary and external communication uses UART/I²C instead. | Choose when USB functionality is omitted to reduce BOM cost and simplify certification (no USB-IF compliance testing). |
Compared with CY8C24493-24LQXI and CY8C24293-24LQXI, the CY8C24393-24LQXI uniquely balances USB integration, 8 KB flash headroom, and industrial temperature support - making it optimal for field-deployable USB-configurable embedded systems requiring moderate code size and analog sensing.
Availability
CY8C24393-24LQXI is available at Aetrix Electronics and suitable for industrial sensor nodes, USB human interface devices, smart home thermostats, and medical patient monitor front-ends requiring stable component supply across extended product lifecycles.
Supply support for CY8C24393-24LQXI 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
Infineon Technologies acquired Cypress Semiconductor in 2020 and maintains full product continuity, documentation, and long-term supply commitment for the PSoC® portfolio.
The CY8C24x93 series belongs to the PSoC® 1 family - designed specifically for cost-sensitive, low-power embedded applications requiring mixed-signal integration and USB connectivity without external components.
FAQ
Does CY8C24393-24LQXI require an external crystal for USB operation?
No. The device uses its internal 24 MHz main oscillator (IMO) and integrated USB transceiver to achieve full-speed USB 2.0 compliance without any external crystal. An optional 32 kHz external crystal may be used for low-power sleep timer accuracy but is not required for USB functionality.
Can the 10-bit ADC operate independently while the CPU is in Deep Sleep mode?
No. The ADC requires CPU intervention to initiate conversions and read results. However, the comparators can operate autonomously in Deep Sleep and generate interrupts to wake the CPU - enabling ultra-low-power threshold detection without ADC activation.
What is the maximum sink current capability across all GPIOs, and how is it distributed?
The absolute maximum sink current is 120 mA for all GPIOs combined. Each pin supports up to 25 mA sink, but simultaneous full-load operation on more than four pins exceeds safe thermal limits. Port-level current limits are enforced in PSoC Designer's resource meter to prevent violation.
Is PSoC Designer software still supported for CY8C24393-24LQXI development?
Yes. Infineon continues to host PSoC Designer v5.4 SP4 and associated device libraries on www.infineon.com, with full support for CY8C24x93 devices. Legacy projects remain buildable, and technical notes for migration to modern tools (e.g., ModusToolbox™ for PSoC 4/6) are available in the PSoC 1 Migration Guide.
CY8C24393-24LQXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-UFQFN Exposed Pad
- Series:
- PSOC™1 CY8C24xxx
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- M8C
- Core Size:
- 8-Bit
- Speed:
- 24MHz
- Connectivity:
- I2C, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 34
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 1x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C24393-24LQXI FAQ
1.How can I place an order for CY8C24393-24LQXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C24393-24LQXI 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 CY8C24393-24LQXI reliable?
The price and inventory of CY8C24393-24LQXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C24393-24LQXI is usually 5 days.
3.What payment methods are accepted for CY8C24393-24LQXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C24393-24LQXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C24393-24LQXI?
CY8C24393-24LQXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C24393-24LQXI 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 CY8C24393-24LQXI?
For technical support, including CY8C24393-24LQXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C24393-24LQXI requirements.
6.How does Aetrix verify that CY8C24393-24LQXI is sourced from the original manufacturer or authorized distributors?
All CY8C24393-24LQXI 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 CY8C24393-24LQXI meets industry standards.
7.What is the process for return or replacement of CY8C24393-24LQXI?
All CY8C24393-24LQXI units undergo pre-shipment inspection (PSI). If there is an issue with CY8C24393-24LQXI, 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 CY8C24393-24LQXI part is unused and in its original packaging.
Return procedure for CY8C24393-24LQXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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