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Infineon Technologies CY8C21334-24PVXAT
- Part No.:
- CY8C21334-24PVXAT
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
CY8C21334-24PVXAT.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,100
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Product details
Overview
CY8C21334-24PVXAT from Cypress Semiconductor is an AEC-Q100 qualified automotive-grade PSoC® programmable system-on-chip featuring an 8-bit M8C Harvard-architecture CPU running at up to 24 MHz, 8 KB flash, 512 bytes SRAM, and four digital + four analog PSoC blocks. It operates from 3.0 V to 5.25 V across –40 °C to +85 °C and supports capacitive sensing, PWM, UART, SPI, I²C, and 10-bit ADC in automotive body electronics.
For engineers reviewing the CY8C21334-24PVXAT datasheet, CY8C21334-24PVXAT pinout, CY8C21334-24PVXAT application, or CY8C21334-24PVXAT equivalent, key selection criteria include AEC-Q100 qualification, configurable analog/digital blocks for mixed-signal integration, GPIO-driven capacitive touch capability, and ISSP-enabled field firmware updates in constrained automotive ECUs.
Technical Context
The device implements a fixed-function M8C core with Harvard architecture, internal ±5% 24 MHz IMO and low-power ILO, and dual-clock domain support for synchronous analog/digital operation. Its four Type E analog blocks deliver comparator-based sensing with 1.3 V reference or DAC-adjustable thresholds, while four digital blocks enable reconfigurable 8–32-bit timers, PWMs, CRC, and full/half-duplex UART routed flexibly via global interconnect.
Analog signal routing uses a shared analog mux bus with 8:1 port 0 input multiplexer and hardware-controlled precharge for capacitive sensing. Digital peripherals are instantiated as user modules in PSoC Designer, with all GPIOs supporting analog input, configurable drive modes (25 mA sink), and interrupt capability - enabling single-chip replacement of discrete sensor interface + MCU + communication ICs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture, 24 MHz max - enables deterministic real-time control without cache or pipeline stalls |
| Flash / SRAM | 8 KB flash with partial update support + 512 bytes SRAM - allows in-field firmware patching and data logging in telematics nodes |
| Analog Blocks | Four Type E analog blocks - provide two comparators with DAC or 1.3 V reference, plus up to 10-bit dual-channel ADC for sensor signal conditioning |
| Digital Blocks | Four digital PSoC blocks - configurable as 8–32-bit timers, PWMs with dead-band, UART, SPI, I²C, CRC, or PRS generators |
| GPIO Capability | 28-pin SOIC package with all pins supporting analog input, 25 mA sink, pull-up/down, open-drain, and interrupt - simplifies PCB layout for multi-function I/O |
| Operating Range | –40 °C to +85 °C, 3.0–5.25 V supply - meets automotive cabin and under-hood ambient requirements without external supervision |
| Certification | AEC-Q100 Grade 2 qualified - validated for automotive production use with defined reliability testing and failure mechanisms |
Pinout & Package
Package: 28-pin SOIC (PV) with 0.3 inch body width and standard JEDEC MS-013AC footprint - compatible with automated SMT assembly and legacy board designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply | 3.0–5.25 V main rail powering core, analog, and I/O; requires local 100 nF decoupling |
| VSS | Ground reference | Digital/analog common return; must be low-impedance connection to minimize noise coupling into analog blocks |
| XRES | Active-low reset input | Asynchronous reset pin; internal pull-up ensures reliable startup without external RC network |
| XTAL1/XTAL2 | External oscillator terminals | Supports optional 32.768 kHz crystal for RTC or up to 24 MHz crystal for precision clocking |
| P0[0]–P0[7] | Port 0 general-purpose I/O | All support analog input, capacitive sensing precharge, and configurable drive modes; P0[0]/P0[1] route to analog mux bus |
| P1[0]–P1[7] | Port 1 general-purpose I/O | Full digital functionality including UART RX/TX, SPI SCLK/MOSI/MISO, and I²C SCL/SDA when configured |
| P2[0]–P2[7] | Port 2 general-purpose I/O | Support PWM output, timer capture, and interrupt-on-change; P2[0]–P2[3] connect to analog comparators |
| P3[0]–P3[3] | Port 3 general-purpose I/O | Additional GPIOs with analog input capability; P3[0] serves as ISSP programming clock (SCLK) |
Key Features
| Feature | Design Value |
|---|---|
| Configurable analog blocks | Four Type E blocks enable pin-to-pin comparators with selectable 1.3 V or 8-bit DAC reference - eliminates need for external voltage references in window-comparator designs |
| Capacitive sensing engine | Hardware-accelerated precharge and analog mux routing - achieves sub-100 ms response time for touch buttons and sliders without CPU overhead |
| In-system serial programming | ISSP interface using P3[0]–P3[3] - enables firmware updates over existing wiring harnesses in deployed vehicles |
| Automotive-grade clocking | Internal ±5% 24 MHz IMO + low-power ILO - provides robust timing for CAN/LIN gateway functions without external crystals |
| Flexible GPIO drive | 25 mA sink / 10 mA source per pin with open-drain, strong, high-Z, and pull-up/down modes - directly drives LEDs, relays, and logic-level MOSFETs |
Applications
| Door Control Module | Seat Position Sensor Interface |
|---|---|
Use Scenario: Monitoring door latch status, window position, and mirror actuation feedback in OEM door modules. IC Role / Device Role / Timing Role: Central mixed-signal controller handling capacitive touch detection, PWM motor control, and LIN bus communication. Use Value: Integrates 10-bit ADC for potentiometer-based position sensing, comparator-based microswitch emulation, and UART-to-LIN bridge - reducing BOM count by three discrete ICs. | Use Scenario: Reading multi-turn potentiometers and Hall-effect sensors to determine seat fore/aft, recline, and height positions. IC Role / Device Role / Timing Role: Analog front-end + MCU for sensor signal conditioning, linearization, and CAN message formatting. Use Value: Uses dual-channel 10-bit ADC with internal 1.3 V reference to reject supply ripple, and configurable GPIOs to drive isolated analog sensor excitation - improving position accuracy to ±0.5% FS. |
| Steering Wheel Touch Controls | Body Control Unit Subsystem |
Use Scenario: Detecting finger presence on conductive traces embedded in steering wheel leather or plastic overlays. IC Role / Device Role / Timing Role: Dedicated capacitive sensing node with hardware precharge and noise rejection algorithms. Use Value: Leverages analog mux bus and Type E comparators to scan 12+ electrodes at 100 Hz with <10 µA average current - meeting ISO 11452-2 immunity requirements. | Use Scenario: Managing interior lighting dimming, HVAC fan speed, and ambient light sensing in compact BCM submodules. IC Role / Device Role / Timing Role: Low-cost programmable peripheral hub replacing multiple ASICs and discrete logic. Use Value: Configures digital blocks as 16-bit PWMs for LED dimming and 32-bit counters for tachometer inputs, while analog blocks condition photodiode signals - cutting PCB area by 35%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon TLE9842-2QX | ARM Cortex-M0 core, integrated LIN transceiver, no configurable analog blocks | Targeted for LIN-connected motor control only; lacks capacitive sensing and flexible ADC configuration | Select when LIN physical layer integration and higher CPU performance outweigh analog configurability needs |
| NXP S9KEAZ128AMLH | ARM Cortex-M0+, 12-bit SAR ADC, fixed-function peripherals, no programmable analog blocks | Requires external comparators and op-amps for sensor front-end; limited to predefined peripheral combinations | Select when toolchain familiarity and automotive ASIL-B support are prioritized over analog signal path customization |
Compared with TLE9842-2QX and S9KEAZ128AMLH, CY8C21334-24PVXAT uniquely delivers reconfigurable analog signal chains and capacitive sensing acceleration in a single AEC-Q100 chip - making it optimal for cost-sensitive, functionally diverse automotive human-machine interfaces where mixed-signal flexibility reduces total system complexity.
Availability
CY8C21334-24PVXAT is available at Aetrix Electronics and suitable for automotive door modules, seat position sensors, steering wheel touch controls, and body control unit subsystems requiring stable component supply and long-term lifecycle assurance.
Supply support for CY8C21334-24PVXAT 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 programmable mixed-signal ICs for automotive, industrial, and consumer applications, with focus on integration, reliability, and development efficiency.
This device belongs to the PSoC 1 family - engineered specifically to replace multiple discrete analog/digital components with a single configurable chip for automotive body electronics and HMI systems.
FAQ
Is CY8C21334-24PVXAT pin-compatible with other CY8C21x34 variants?
Yes - all CY8C21x34 devices in the 28-pin SOIC (PV) package share identical pinouts, including CY8C21334-24PVXIT and CY8C21534-24PVXAT. Differences lie in flash configuration, memory protection, and factory-programmed options, not physical connectivity or electrical I/O behavior.
Does this device support capacitive touch sensing without external components?
Yes - the CY8C21334-24PVXAT integrates hardware-accelerated capacitive sensing using its analog mux bus, Type E comparators, and GPIO precharge control. No external resistors, op-amps, or dedicated touch ICs are required for basic button/slider implementation.
What development tools are required to program this PSoC device?
PSoC Designer™ IDE (legacy, Windows-only) is mandatory for configuring analog/digital blocks and generating firmware. Programming requires a MiniProg1 or MiniProg3 programmer; debugging uses the on-chip ICE interface accessible via SWD-compatible debug probes.
Can the internal 24 MHz oscillator meet automotive timing accuracy requirements?
The internal ±5% 24 MHz IMO is sufficient for non-critical timing functions like PWM generation and UART baud rate derivation in body electronics. For LIN/CAN synchronization or precise RTC, an external 32.768 kHz crystal on XTAL1/XTAL2 is recommended per AEC-Q100 design guidelines.
CY8C21334-24PVXAT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Series:
- PSOC™1 CY8C21xxx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Verified
- Core Processor:
- M8C
- Core Size:
- 8-Bit
- Speed:
- 24MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 16
- 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:
- A/D 28x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C21334-24PVXAT FAQ
1.How can I place an order for CY8C21334-24PVXAT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C21334-24PVXAT 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 CY8C21334-24PVXAT reliable?
The price and inventory of CY8C21334-24PVXAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C21334-24PVXAT is usually 5 days.
3.What payment methods are accepted for CY8C21334-24PVXAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C21334-24PVXAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C21334-24PVXAT?
CY8C21334-24PVXAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C21334-24PVXAT 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 CY8C21334-24PVXAT?
For technical support, including CY8C21334-24PVXAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C21334-24PVXAT requirements.
6.How does Aetrix verify that CY8C21334-24PVXAT is sourced from the original manufacturer or authorized distributors?
All CY8C21334-24PVXAT 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 CY8C21334-24PVXAT meets industry standards.
7.What is the process for return or replacement of CY8C21334-24PVXAT?
All CY8C21334-24PVXAT units undergo pre-shipment inspection (PSI). If there is an issue with CY8C21334-24PVXAT, 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 CY8C21334-24PVXAT part is unused and in its original packaging.
Return procedure for CY8C21334-24PVXAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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