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Infineon Technologies CY8C21334-12PVXET
- Part No.:
- CY8C21334-12PVXET
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
CY8C21334-12PVXET.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,242
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Product details
Overview
CY8C21334-12PVXET from Infineon Technologies (formerly Cypress) is an AEC-Q100 qualified automotive-grade PSoC® programmable system-on-chip featuring an 8-bit M8C Harvard-architecture CPU running at up to 12 MHz, 8 KB flash, 512 bytes SRAM, and integrated analog/digital configurable blocks for capacitive sensing, ADC, PWM, UART, SPI, and I²C. It operates from 4.75 V to 5.25 V across –40 °C to +125 °C.
For engineers reviewing the CY8C21334-12PVXET datasheet, CY8C21334-12PVXET pinout, CY8C21334-12PVXET application, or CY8C21334-12PVXET equivalent, key selection criteria include automotive temperature compliance, on-chip analog mux routing for touch sensing, ISSP-supported partial flash updates, and GPIO-configurable drive strength (25 mA sink / 10 mA source) with analog input capability on all pins.
Technical Context
The device implements a fixed-function M8C core with dedicated interrupt controller, IMO (24 MHz internal oscillator), and ILO (low-power sleep oscillator), enabling deterministic real-time control in safety-critical automotive subsystems. Its digital system comprises four 8-bit PSoC blocks configurable as timers, counters, PWMs (8–32 bit), CRC generators, or UART/SPI peripherals - all routable to any GPIO via global digital interconnect.
The analog system integrates four Type E blocks supporting dual 10-bit ADCs, two comparators with 1.3 V reference or 8-bit DAC references, and a shared analog mux bus connecting all GPIOs to ADC/comparator inputs. This architecture enables hardware-accelerated capacitive sensing without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture, 12 MHz max clock - delivers deterministic 2 MIPS throughput for real-time sensor processing. |
| Memory | 8 KB flash (in-system serial programmable) + 512 bytes SRAM - supports field firmware updates and data logging without external memory. |
| Analog ADC | Up to 10-bit resolution, single or dual channel, 24-channel input mux - enables high-precision voltage monitoring across multiple sensors. |
| Digital Peripherals | Configurable 8–32-bit PWMs, timers, UART (full/half-duplex), SPI master/slave, I²C up to 400 kHz - eliminates need for discrete interface ICs. |
| GPIO | 24 pins with 25 mA sink / 10 mA drive, pull-up/pull-down/Hi-Z/open-drain modes, analog input, and interrupt capability - simplifies board-level signal conditioning and debouncing. |
| Operating Range | –40 °C to +125 °C ambient, 4.75 V to 5.25 V supply - certified for under-hood automotive applications per AEC-Q100 Grade 1. |
Pinout & Package
20-pin SSOP (Shrink Small Outline Package) with 0.65 mm pitch; thermally enhanced plastic body, JEDEC MS-013AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Primary 4.75–5.25 V rail powering core, analog, and digital systems; requires local 0.1 µF decoupling. |
| VSS | Ground reference | Digital and analog common return; separate analog/digital ground routing recommended for noise-sensitive ADC operation. |
| P0[0]–P0[7] | General-purpose I/O | Port 0 pins support analog input, comparator inputs, ADC channels, and configurable drive modes - used for capacitive sense electrodes. |
| P1[0]–P1[7] | General-purpose I/O | Port 1 pins route to digital blocks (PWM, UART, SPI) and analog mux bus - enable flexible peripheral assignment without PCB redesign. |
| XRES | External reset input | Active-low asynchronous reset pin; internally pulled up - allows external watchdog or power-monitor IC to force safe restart. |
| XTAL1/XTAL2 | Crystal oscillator terminals | Support optional 32.768 kHz or up to 24 MHz crystal; internal oscillator used by default to reduce BOM count. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive Sensing Engine | Hardware-accelerated CSD (CapSense®) using analog mux and CT blocks - enables robust touch buttons/sliders without firmware polling overhead. |
| Programmable Clock System | Internal 24 MHz IMO + low-power ILO + digital clock dividers - provides independent timing domains for real-time control and low-power sleep states. |
| In-System Serial Programming | ISSP interface via PSoC Programmer - supports field firmware updates through existing UART/I²C lines without JTAG hardware. |
| Analog Reference | On-chip 1.3 V precision voltage reference - eliminates external reference IC for ADC/DAC calibration and comparator thresholds. |
| EEPROM Emulation | Flash-based nonvolatile storage with wear leveling - retains configuration data across power cycles without external EEPROM chip. |
Applications
| Automotive Door Module | Industrial HMI Panel |
|---|---|
Use Scenario: Control of window lift, mirror adjustment, and interior lighting via capacitive touch controls and motor drivers. IC Role / Device Role / Timing Role: Central PSoC managing touch sensing, PWM motor control, LIN/I²C communication, and system supervision. Use Value: Single-chip integration reduces component count by 30% vs. MCU + discrete analog front-end + touch controller solution. | Use Scenario: Operator interface on factory HMIs requiring tactile feedback, status LEDs, and sensor readouts. IC Role / Device Role / Timing Role: Real-time sensor acquisition (ADC), LED dimming (PWM), button scanning (CSD), and RS-485 gateway (UART). Use Value: Configurable GPIO and analog mux allow reuse across panel variants without PCB change - accelerating NPI timelines. |
| Engine Control Sensor Node | Smart Appliance Control Board |
Use Scenario: Monitoring throttle position, coolant temperature, and knock sensor signals in engine bay environments. IC Role / Device Role / Timing Role: AEC-Q100-compliant signal conditioner and CAN/LIN preprocessor with fault-tolerant LVD detection. Use Value: –40 °C to +125 °C operation and internal 1.3 V reference ensure stable ADC accuracy despite thermal cycling. | Use Scenario: Washing machine control unit managing water level sensing, motor speed, detergent dispensing, and user interface. IC Role / Device Role / Timing Role: Main controller executing state machine, driving triac/relay outputs, and sampling pressure/temperature sensors. Use Value: 8 KB flash supports multi-language UI firmware and OTA update capability via ISSP over UART. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C21434-12PVXET | 28-pin SSOP package; adds 4 additional GPIOs and one extra analog block - no change in core specs or memory. | Required when >24 GPIOs or additional analog resources needed for expanded sensor count. | Select only if pin count or analog resource expansion is mandatory; otherwise CY8C21334-12PVXET offers identical functionality in smaller footprint. |
| STM32F030F4P6 | ARM Cortex-M0 core, 48 MHz, 16 KB flash, but lacks integrated analog mux, capacitive sensing hardware, and programmable PSoC blocks. | Suitable for cost-sensitive MCU-only tasks without mixed-signal configurability. | Choose only when standard ARM toolchain and higher CPU performance outweigh need for hardware-accelerated analog functions. |
Compared with CY8C21434-12PVXET, this part saves board space and BOM cost where 20-pin I/O suffices; versus STM32F030F4P6, it delivers superior analog integration and touch sensing capability without external components - critical for automotive and appliance HMI designs.
Availability
CY8C21334-12PVXET is available at Aetrix Electronics and suitable for automotive door modules, industrial HMI panels, engine sensor nodes, and smart appliance control boards requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CY8C21334-12PVXET 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 management, automotive microcontrollers, and security solutions for industrial and automotive markets.
This device belongs to the PSoC® 1 family - designed specifically to replace discrete analog/digital components with a single configurable SoC for cost-sensitive, mixed-signal embedded applications in harsh environments.
FAQ
Is CY8C21334-12PVXET pin-compatible with other CY8C21x34 variants?
Yes - all CY8C21x34 devices in the 20-pin SSOP package share identical pinout and electrical characteristics. Differences are limited to flash size, SRAM allocation, and enabled PSoC block configurations, which are software-defined during design phase using PSoC Designer.
Does this device support capacitive touch sensing out of the box?
Yes - the CY8C21334-12PVXET includes dedicated Type E analog blocks and an analog mux bus enabling hardware-accelerated CapSense® functionality. No external components are required for basic button/slider implementation; firmware libraries and tuning tools are provided free with PSoC Designer.
What development tools are required to program this device?
PSoC Designer™ IDE (free download) is mandatory for configuring analog/digital blocks and generating firmware. Programming requires a MiniProg1 or MiniProg3 programmer; full-speed emulation and trace debugging are supported via ICE-Cube or CY3210-PSoC Evaluation Kit with compatible debug adapter.
Can the internal 24 MHz oscillator be used as the main system clock without external crystals?
Yes - the internal main oscillator (IMO) is factory-trimmed to ±2% accuracy at 24 MHz and can directly drive the M8C core. It is the default clock source; external crystals are optional and used only when tighter frequency stability (e.g., for UART baud rate accuracy) or low-power sleep mode timing is required.
CY8C21334-12PVXET 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:
- 12MHz
- 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:
CY8C21334-12PVXET FAQ
1.How can I place an order for CY8C21334-12PVXET through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C21334-12PVXET 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 CY8C21334-12PVXET reliable?
The price and inventory of CY8C21334-12PVXET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C21334-12PVXET is usually 5 days.
3.What payment methods are accepted for CY8C21334-12PVXET?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C21334-12PVXET transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C21334-12PVXET?
CY8C21334-12PVXET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C21334-12PVXET 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 CY8C21334-12PVXET?
For technical support, including CY8C21334-12PVXET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C21334-12PVXET requirements.
6.How does Aetrix verify that CY8C21334-12PVXET is sourced from the original manufacturer or authorized distributors?
All CY8C21334-12PVXET 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 CY8C21334-12PVXET meets industry standards.
7.What is the process for return or replacement of CY8C21334-12PVXET?
All CY8C21334-12PVXET units undergo pre-shipment inspection (PSI). If there is an issue with CY8C21334-12PVXET, 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 CY8C21334-12PVXET part is unused and in its original packaging.
Return procedure for CY8C21334-12PVXET:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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