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Infineon Technologies CY8C20534-12PVXIT
- Part No.:
- CY8C20534-12PVXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
CY8C20534-12PVXIT.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
CY8C20534-12PVXIT from Infineon Technologies (formerly Cypress Semiconductor) is a programmable 8-bit PSoC® System-on-Chip with integrated CapSense® capacitive sensing engine, M8C CPU core operating up to 12 MHz, 8 KB flash, 512 bytes SRAM, and support for up to 28 GPIOs with analog mux capability - deployed in human interface applications such as touch-enabled industrial HMI panels.
For engineers reviewing the CY8C20534-12PVXIT datasheet, CY8C20534-12PVXIT pinout, CY8C20534-12PVXIT application, or CY8C20534-12PVXIT equivalent, key selection criteria include its dedicated hardware-based CapSense block, configurable I²C/SPI interfaces, 2.4–5.25 V operating range, industrial temperature rating (–40 °C to +85 °C), and 28-pin SSOP package compatibility.
Technical Context
The device implements a Harvard-architecture M8C CPU core with on-chip 8 KB flash and 512-byte SRAM, enabling firmware execution and data storage without external memory. Its dedicated CapSense block performs self-contained relaxation oscillator-based capacitance measurement across up to 28 GPIOs using internal 1.8 V reference and analog global bus routing.
System-level resources include a 6/12 MHz internal main oscillator (IMO), 32 kHz internal low-speed oscillator (ILO), programmable digital I/O drive modes (20 mA sink per pin), and configurable communication peripherals: I²C slave (50/100/400 kHz) and SPI master/slave (46.9 kHz–3 MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture, 12 MHz max clock - enables deterministic real-time CapSense scanning and firmware control without external timing sources. |
| Flash Memory | 8 KB, 50,000 erase/write cycles - supports field firmware updates and partial reprogramming of CapSense configuration without full chip erase. |
| SRAM | 512 bytes - sufficient for runtime variables, sensor baseline tracking, and debounce state storage in multi-button touch interfaces. |
| CapSense Inputs | Up to 28 GPIO-configurable channels - allows simultaneous buttons, sliders, and proximity sensors on single-chip HMI without external ADC or controller. |
| Operating Voltage | 2.4 V to 5.25 V - compatible with both 3.3 V and 5 V industrial logic rails and legacy panel power supplies. |
| Temperature Range | –40 °C to +85 °C - qualified for deployment in uncontrolled industrial enclosures and outdoor kiosk environments. |
| I/O Drive Strength | 20 mA sink per GPIO - directly drives LEDs or small relays for status feedback or local actuation without buffer ICs. |
Pinout & Package
Package: 28-pin SSOP (Small Outline Integrated Circuit), 300 mil width, lead pitch 0.65 mm - surface-mount compatible with standard industrial PCB assembly processes and reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Main digital/analog supply rail (2.4–5.25 V); powers CPU, CapSense block, and I/O drivers. |
| VSS | Ground reference | Digital and analog common return; must be low-impedance for stable CapSense baseline operation. |
| P0[0]–P0[7] | General-purpose I/O | Configurable as CapSense inputs, digital outputs, or analog inputs; all support 20 mA sink and programmable drive modes. |
| P1[0]–P1[7] | Digital I/O with regulated output | Port 1 supports selectable 3.0 V regulated output mode (20 mA total port source current) for driving external logic or LEDs. |
| P2[0]–P2[7] | General-purpose I/O | Additional GPIOs with full CapSense and analog mux capability; routed to internal analog global bus for flexible sensor routing. |
| SCL / SDA | I²C interface pins | Hardware I²C slave interface (50/100/400 kHz); enables host MCU or microcontroller to read touch status and configure parameters. |
| CSN / SCLK / MOSI / MISO | SPI interface pins | Supports both SPI master and slave modes; used for high-speed configuration or debug communication with external hosts or programmers. |
Key Features
| Feature | Design Value |
|---|---|
| Dedicated CapSense hardware block | Offloads capacitive sensing computation from CPU; enables sub-10 ms scan time for 20+ sensors with no firmware overhead. |
| Configurable analog multiplexer | Routes any GPIO to internal analog bus - supports complex topologies like linear sliders (10-segment) or circular touchpads without external routing components. |
| Programmable I/O drive modes | Per-pin selection of pull-up, high-Z, open-drain, or CMOS drive - eliminates need for external level shifters or pull resistors in mixed-voltage systems. |
| Internal voltage references | 1.8 V analog reference and 3.0 V regulated I/O output - ensures consistent CapSense sensitivity and reliable interfacing across varying supply conditions. |
| In-system serial programming (ISSP) | Enables firmware and CapSense tuning updates via two-wire interface - supports field calibration and post-deployment feature upgrades. |
Applications
| Industrial HMI Panels | Home Appliance Control |
|---|---|
|
Use Scenario: Touch-sensitive operator interface on PLC-mounted control panels with metal bezel and ESD exposure. IC Role / Device Role / Timing Role: Primary capacitive sensing controller and local decision engine; scans 12 buttons and 1 slider at 100 Hz with built-in noise rejection. Use Value: Eliminates mechanical switches and associated wear/failure; withstands >8 kV contact ESD per IEC 61000-4-2 due to on-die filtering and hardware debouncing. |
Use Scenario: Cooktop and oven control overlay with waterproof glass cover and ambient temperature variation. IC Role / Device Role / Timing Role: Standalone CapSense processor managing 8 buttons and proximity wake-up; operates from 3.3 V rail with auto-baseline drift compensation. Use Value: Maintains consistent touch response across –20 °C to +70 °C ambient; tolerates condensation and grease film via adaptive threshold algorithm. |
| Medical Device Keypads | Smart Building Thermostats |
|
Use Scenario: Disinfectant-resistant touch interface on portable diagnostic equipment requiring IP65-rated front panel. IC Role / Device Role / Timing Role: Isolated CapSense subsystem communicating via I²C to main ARM Cortex-M host; handles all raw sensor acquisition and gesture decoding. Use Value: Reduces host CPU load by >30% versus software-based sensing; meets IEC 60601-1 creepage/clearance requirements via internal isolation design. |
Use Scenario: Wall-mounted HVAC controller with ambient light and temperature compensation for consistent user experience. IC Role / Device Role / Timing Role: Local sensor hub aggregating touch, temperature (via external NTC), and humidity data; transmits events over I²C to system MCU. Use Value: Enables <100 ms touch response with zero false triggers under fluorescent lighting; supports firmware-tuned hysteresis for thermal drift mitigation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive sensing controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MTCH101-I/ST | Dedicated single-chip CapTouch™ controller; no programmable CPU, 16-channel max, fixed I²C interface only. | Limited to basic button/slider use; no firmware customization or SPI interface; lower BOM cost but inflexible. | Select when application requires only static touch layout and minimal firmware involvement. |
| CY8C4014LQI-422 | PSoC 4-based; ARM Cortex-M0+, 16 KB flash, CapSense CSD v2.0, supports mutual-capacitance and proximity sensing. | Higher performance and flexibility; supports larger touch surfaces and advanced gestures; requires different toolchain (PSoC Creator). | Select when future scalability, BLE integration, or enhanced noise immunity in noisy EMI environments is required. |
Compared with MTCH101-I/ST and CY8C4014LQI-422, CY8C20534-12PVXIT offers balanced programmability and CapSense optimization for cost-sensitive industrial HMI - retaining full firmware control without ARM toolchain complexity or dedicated-controller limitations.
Availability
CY8C20534-12PVXIT is available at Aetrix Electronics and suitable for industrial HMI panels, home appliance control interfaces, and medical device keypads requiring stable component supply, long-term lifecycle support, and qualification-grade traceability.
Supply support for CY8C20534-12PVXIT 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 support for the PSoC® portfolio including legacy CapSense devices.
CY8C20534-12PVXIT belongs to the PSoC® 1 family - designed specifically for cost-optimized, low-power capacitive touch applications where hardware-accelerated sensing and simple 8-bit control coexist on a single die.
FAQ
Does CY8C20534-12PVXIT support mutual-capacitance sensing?
No. The CY8C20534-12PVXIT implements only self-capacitance sensing via its dedicated CapSense relaxation oscillator architecture. Mutual-capacitance is not supported in the PSoC 1 CapSense block; that capability was introduced in PSoC 4 devices with CapSense CSD v2.0 and later.
Can the internal 3.0 V LDO on Port 1 power external circuitry?
Yes - the regulated 3.0 V output on Port 1 is rated for up to 20 mA total source current and can power external comparators, op-amps, or low-power sensors. It is disabled by default and enabled via register bit PRT1DM0[7], with bypass mode available for direct VDD routing.
Is ISSP programming supported through standard SWD or JTAG interfaces?
No. In-system serial programming (ISSP) uses a proprietary two-wire protocol (clock and data lines) defined in the PSoC Designer toolchain. It does not use SWD or JTAG; dedicated Cypress/Infineon programmers (e.g., MiniProg3) or compatible third-party tools with ISSP firmware are required.
What is the maximum recommended trace length for CapSense electrodes connected to CY8C20534-12PVXIT?
For optimal signal integrity and noise immunity, electrode traces should be kept under 10 cm in length and routed away from noisy digital signals or switching power supplies. Longer traces (>15 cm) require series RC filtering and guard ring implementation per AN2397 and the CY8C20x34 CapSense Design Guide.
CY8C20534-12PVXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- 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:
- 24
- 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:
CY8C20534-12PVXIT FAQ
1.How can I place an order for CY8C20534-12PVXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C20534-12PVXIT 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 CY8C20534-12PVXIT reliable?
The price and inventory of CY8C20534-12PVXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C20534-12PVXIT is usually 5 days.
3.What payment methods are accepted for CY8C20534-12PVXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C20534-12PVXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C20534-12PVXIT?
CY8C20534-12PVXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C20534-12PVXIT 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 CY8C20534-12PVXIT?
For technical support, including CY8C20534-12PVXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C20534-12PVXIT requirements.
6.How does Aetrix verify that CY8C20534-12PVXIT is sourced from the original manufacturer or authorized distributors?
All CY8C20534-12PVXIT 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 CY8C20534-12PVXIT meets industry standards.
7.What is the process for return or replacement of CY8C20534-12PVXIT?
All CY8C20534-12PVXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY8C20534-12PVXIT, 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 CY8C20534-12PVXIT part is unused and in its original packaging.
Return procedure for CY8C20534-12PVXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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