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Infineon Technologies CY8C20324-12LQXIT
- Part No.:
- CY8C20324-12LQXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
CY8C20324-12LQXIT.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 24SQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,906
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Product details
Overview
CY8C20324-12LQXIT from Infineon Technologies (formerly Cypress) is an 8-bit programmable System-on-Chip (PSoC) with integrated CapSense® capacitive sensing engine, 8 KB flash, 512 bytes SRAM, and up to 28 GPIOs. It operates from 2.4 V to 5.25 V, draws 1.5 mA active current at 3.0 V/12 MHz, and supports up to 25 buttons + 1 slider for notebook multimedia keypads.
For engineers reviewing the CY8C20324-12LQXIT datasheet, CY8C20324-12LQXIT pinout, CY8C20324-12LQXIT application, or CY8C20324-12LQXIT equivalent, this device is selected for low-power touch interface design requiring self-contained analog sensing, configurable I/O drive modes (CMOS/open-drain/pull-up), and field-upgradable firmware via ISSP.
Technical Context
The CY8C20324-12LQXIT integrates a Harvard-architecture M8C CPU core running up to 12 MHz, paired with a dedicated hardware-based CapSense block that performs relaxation oscillator-based capacitance measurement without external components. Its analog mux connects all GPIOs to the CapSense comparator and IDAC reference buffer, enabling simultaneous button, slider, and proximity sensing.
System resources include dual internal oscillators (6/12 MHz IMO and 32 kHz ILO), I²C slave and SPI master/slave interfaces, watchdog/sleep timers, 3 V LDO regulator with bypass mode, and 1.8 V internal analog reference - all managed through register-level control without external support circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | M8C 8-bit Harvard CPU, 2 MIPS @ 12 MHz - enables deterministic real-time sensor scanning and UI response. |
| Flash Memory | 8 KB with 50,000 erase/write cycles - supports bootloader-based field updates and partial firmware patches. |
| SRAM | 512 bytes - sufficient for CapSense baseline tracking, gesture state, and small application buffers. |
| CapSense Inputs | Up to 25 buttons + 1 slider + 10 cm proximity - implemented in hardware with no firmware overhead per scan. |
| Operating Voltage | 2.4 V to 5.25 V - allows direct connection to 3.3 V or 5 V system rails without level-shifting. |
| Active Current | 1.5 mA @ 3.0 V, 12 MHz - enables battery-powered touch panels with multi-second wake intervals. |
| Sleep Current | 2.8 µA @ 3.3 V - supports ultra-low-power wake-on-touch operation in portable devices. |
Pinout & Package
Package: 24-pin QFN (4 mm × 4 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Primary 2.4–5.25 V rail; powers digital core, analog system, and internal LDO output stage. |
| VSS | Ground reference | Digital and analog common return; must be low-impedance for stable CapSense performance. |
| P0[0]–P0[7] | GPIO bank 0 | Configurable as CapSense inputs, LED drivers, or general-purpose I/O with CMOS/open-drain modes. |
| P1[0]–P1[7] | GPIO bank 1 | Supports CapSense scanning, analog mux routing, and high-current LED sink (up to 25 mA). |
| P2[0]–P2[7] | GPIO bank 2 | Includes I²C SDA/SCL and SPI signals; usable as CapSense electrodes or communication ports. |
| XTAL_IN/XTAL_OUT | Oscillator terminals | Unused - internal IMO/ILO eliminates need for external crystal; pins are NC or GPIO-capable. |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; compatible with pushbutton or microcontroller-driven reset sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware-accelerated CapSense | Dedicated relaxation oscillator and counter block performs full-button-scan in <1 ms - offloads CPU and ensures consistent timing. |
| Configurable GPIO drive modes | Each pin supports CMOS push-pull, open-drain, pull-up, or high-Z - enables direct LED driving and mixed-signal board layout. |
| Integrated 3 V LDO regulator | Fixed 3 V output, 5 V max input, register-bypassable - simplifies power design and reduces BOM count by eliminating external regulator. |
| In-system serial programming (ISSP) | 2-wire interface using P0[0]/P0[1] - enables firmware updates after PCB assembly without dedicated programming header. |
| Internal 1.8 V analog reference | Stable, temperature-compensated reference for CapSense comparator - eliminates external voltage reference component. |
Applications
| Notebook Multimedia Keypad | Industrial Control Panel |
|---|---|
Use Scenario: Touch-sensitive function keys and volume slider on ultrabook lid. IC Role / Device Role / Timing Role: Primary CapSense controller managing 4 buttons + 1 slider with <10 ms response latency. Use Value: Eliminates mechanical switches and flex circuits; enables seamless glass-over-metal integration with 5 mm acrylic overlay tolerance. | Use Scenario: Operator interface on factory HMI with glove-compatible touch buttons. IC Role / Device Role / Timing Role: Standalone touch controller interfacing to PLC via I²C slave port. Use Value: Immune to 50/60 Hz EMI and fluorescent lighting noise; maintains >5:1 SNR in electrically noisy environments. |
| Consumer Appliance Interface | Medical Device Touch Overlay |
Use Scenario: Wash cycle selector and start button on front-loading washing machine. IC Role / Device Role / Timing Role: Self-contained touch subsystem with sleep/wake management and LED status feedback. Use Value: 2.8 µA sleep current extends battery backup life to >1 year; LED fading/strobing confirms user input without MCU involvement. | Use Scenario: Sterilizable touch overlay on infusion pump control surface. IC Role / Device Role / Timing Role: Isolated CapSense front-end with proximity wake and waterproof button detection. Use Value: Supports 10 cm proximity sensing through sealed polycarbonate housing; meets IEC 60601-1 creepage requirements via internal LDO isolation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive touch controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ATtiny416-MFR | AVR core, no dedicated CapSense hardware - requires firmware-based RC charging time measurement. | Limited to ≤8 buttons; no slider or proximity support; higher CPU load per scan. | Choose when cost is primary constraint and touch channel count is low. |
| STM32F070F6P6 | ARM Cortex-M0, uses ADC-based charge-transfer sensing - needs external RC network and calibration. | Requires additional passive components per channel; no hardware-accelerated scan engine. | Choose when existing STM32 toolchain and ecosystem are mandatory. |
Compared with ATtiny416-MFR and STM32F070F6P6, CY8C20324-12LQXIT delivers lower BOM cost, faster scan throughput, and guaranteed SNR performance without firmware tuning - critical for production touch interfaces where reliability and time-to-market outweigh raw processing headroom.
Availability
CY8C20324-12LQXIT is available at Aetrix Electronics and suitable for notebook multimedia keypads, industrial HMI panels, and consumer appliance interfaces requiring stable component supply and long-term lifecycle support.
Supply support for CY8C20324-12LQXIT 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 is a global semiconductor leader headquartered in Munich, Germany, specializing in power systems, automotive ICs, and secure connectivity solutions.
This device belongs to the legacy PSoC 1 CapSense family - designed specifically for cost-sensitive, low-power capacitive touch applications where hardware-accelerated sensing and minimal external components are essential.
FAQ
What is the maximum number of capacitive buttons supported by CY8C20324-12LQXIT?
The device supports up to 25 independent capacitive buttons, plus one linear slider and proximity sensing up to 10 cm. This capacity is enabled by dedicated hardware counters and relaxation oscillators within the CapSense block - no firmware scaling or resource sharing required across channels.
Does CY8C20324-12LQXIT require an external crystal or oscillator?
No. It contains an internal main oscillator (IMO) tunable to 6 or 12 MHz and a 32 kHz internal low-speed oscillator (ILO), both factory-calibrated. External timing components are unnecessary, reducing BOM count and PCB area while maintaining ±5% frequency accuracy over voltage and temperature.
Can CY8C20324-12LQXIT drive LEDs directly?
Yes. All 28 GPIOs support configurable drive modes including CMOS push-pull and open-drain with up to 25 mA sink capability. LED fading, strobing, and RGB color mixing are implemented in hardware via PWM registers - no CPU intervention needed during animation sequences.
Is field firmware update supported on CY8C20324-12LQXIT?
Yes. In-system serial programming (ISSP) is supported via two dedicated pins (P0[0]/P0[1]) using a 2-wire interface. The onboard bootloader enables full or partial flash updates without removing the device from the PCB, and supports secure reprogramming in deployed systems.
CY8C20324-12LQXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 24-UFQFN Exposed Pad
- Series:
- PSOC™1 CY8C20xxx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- M8C
- Core Size:
- 8-Bit
- Speed:
- 12MHz
- Connectivity:
- I2C, SPI
- Peripherals:
- LVD, POR, WDT
- Number of I/O:
- 20
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.4V ~ 5.25V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C20324-12LQXIT FAQ
1.How can I place an order for CY8C20324-12LQXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C20324-12LQXIT 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 CY8C20324-12LQXIT reliable?
The price and inventory of CY8C20324-12LQXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C20324-12LQXIT is usually 5 days.
3.What payment methods are accepted for CY8C20324-12LQXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C20324-12LQXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C20324-12LQXIT?
CY8C20324-12LQXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C20324-12LQXIT 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 CY8C20324-12LQXIT?
For technical support, including CY8C20324-12LQXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C20324-12LQXIT requirements.
6.How does Aetrix verify that CY8C20324-12LQXIT is sourced from the original manufacturer or authorized distributors?
All CY8C20324-12LQXIT 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 CY8C20324-12LQXIT meets industry standards.
7.What is the process for return or replacement of CY8C20324-12LQXIT?
All CY8C20324-12LQXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY8C20324-12LQXIT, 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 CY8C20324-12LQXIT part is unused and in its original packaging.
Return procedure for CY8C20324-12LQXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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