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Infineon Technologies CY8C4014SXI-421T
- Part No.:
- CY8C4014SXI-421T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY8C4014SXI-421T.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,431
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Product details
Overview
CY8C4014SXI-421T from Infineon (formerly Cypress) is a 32-bit Arm Cortex-M0 programmable system-on-chip (PSoC) with integrated CapSense capacitive sensing, two current DACs (IDACs), one low-power comparator, and a 16-bit TCPWM block. It features 16 KB flash, 2 KB SRAM, operates from 1.71–5.5 V, and supports Deep Sleep wake-up via I²C address match - used in touch-enabled human interface modules for industrial HMIs and consumer appliances.
For engineers reviewing the CY8C4014SXI-421T datasheet, CY8C4014SXI-421T pinout, CY8C4014SXI-421T application, or CY8C4014SXI-421T equivalent, key selection criteria include CapSense SNR performance, SmartSense™ auto-tuning range (5–45 pF), I²C wake capability in Deep Sleep, TCPWM kill-signal triggering, and GPIO drive-mode programmability across 20 pins.
Technical Context
The device integrates a single-core Arm Cortex-M0 CPU running at up to 16 MHz with zero-wait-state 16 KB flash and 2 KB SRAM. Its analog subsystem includes a 1.2-V referenced comparator and two IDACs supporting both general-purpose analog output and CapSense current sourcing.
Digital resources comprise one multi-mode TCPWM block (center-aligned, edge, pseudo-random), a single SCB-based I²C interface with Deep Sleep address detection, and a programmable I/O matrix routing signals to up to 20 GPIOs across Ports 0–2 - all managed via PSoC Creator's hardware/firmware co-design flow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0, 16 MHz max - enables Thumb-2 binary compatibility with higher-tier Cortex-M3/M4 for scalable firmware migration. |
| Flash / SRAM | 16 KB flash with Read Accelerator, 2 KB SRAM - supports real-time interrupt response and local data buffering without external memory. |
| CapSense Engine | Cypress CSD architecture with SmartSense™ tuning (5–45 pF range) - eliminates manual sensor calibration and maintains SNR > 5000:1 under wet conditions. |
| I²C Interface | Multi-master SCB-I²C with Deep Sleep address-match wake-up - allows host-less peripheral monitoring while consuming <1 µA in Deep Sleep. |
| TCPWM Block | One 16-bit timer/counter/PWM with comparator-triggered kill signal - enables safe motor control shutdown and precise PWM waveform generation. |
| GPIO Count | 20 programmable pins with configurable drive modes, slew rates, and CapSense-capable inputs - supports mixed-signal routing without external level shifters or buffers. |
| Supply Range | 1.71 V to 5.5 V - permits direct connection to Li-ion, USB, or industrial 3.3/5 V rails without external regulators. |
Pinout & Package
CY8C4014SXI-421T is housed in an 8-pin SOIC package (body width 3.9 mm, lead pitch 1.27 mm) with thermal pad exposed on bottom per JEDEC MS-012AA. Pin functions are validated per Cypress datasheet 001-89638 Rev. *L, Figure 7 (Page 7).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply input | Accepts 1.71–5.5 V; powers all digital and analog blocks including CapSense IDACs and comparator. |
| GND | Ground reference | Common return path for all internal circuits; must be connected to low-impedance PCB ground plane. |
| XRES | External reset input | Active-low asynchronous reset; internal pull-up enabled; asserts full chip reset when pulled low. |
| P0[0] | Programmable GPIO / CapSense input | Supports analog comparator input, IDAC sink/source, and CapSense electrode connection. |
| P0[1] | Programmable GPIO / I²C SDA | Configurable as open-drain I²C data line or general-purpose bidirectional I/O with slew control. |
| P0[2] | Programmable GPIO / I²C SCL | Configurable as open-drain I²C clock line or general-purpose bidirectional I/O with drive strength selection. |
| P0[3] | Programmable GPIO / TCPWM output | Can route TCPWM compare output or PWM signal directly to pin without software intervention. |
| SWDIO/SWCLK | Serial Wire Debug interface | Two-pin SWD interface for programming, debugging, and trace - requires no JTAG header or emulator. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense™ Auto-Tuning | Hardware-accelerated CapSense calibration across 5–45 pF sensor range - removes firmware overhead and ensures consistent touch response across temperature/humidity. |
| Deep Sleep I²C Wake | I²C address match detection while drawing <1 µA - enables always-on peripheral monitoring without dedicated wake controller or external logic. |
| Comparator-Based Kill Signal | TCPWM kill input triggered by comparator output - provides hardware-level fault response for motor drives or safety-critical PWM systems. |
| Programmable Drive Modes | Four GPIO drive modes (Strong, Resistive Pull-Up/Down, Open Drain) with slew rate control - reduces EMI and matches interface requirements without external components. |
| Integrated Debug (SWD) | On-chip Serial Wire Debug with 4 breakpoints and 2 watchpoints - enables full-system debugging in production firmware without debug pods or special test fixtures. |
Applications
| Touch-Controlled Appliance UI | Industrial HMI Panel |
|---|---|
Use Scenario: Embedded microwave oven or washing machine control panel with waterproof touch buttons and status LEDs. IC Role / Device Role / Timing Role: Primary MCU executing CapSense scanning, LED PWM dimming, and I²C communication with display driver. Use Value: SmartSense™ maintains reliable touch detection through condensation; TCPWM drives LEDs with flicker-free 12-bit resolution; Deep Sleep mode extends battery life in cordless variants. |
Use Scenario: DIN-rail mounted PLC operator interface with tactile feedback and environmental sealing. IC Role / Device Role / Timing Role: Standalone controller managing capacitive keys, status indicators, and serial communication to main controller over I²C. Use Value: Comparator-triggered kill signal halts PWM outputs during emergency stop; 1.71–5.5 V operation tolerates industrial rail fluctuations; GPIO drive modes eliminate external bus buffers. |
| Smart Home Sensor Hub | Medical Device Keypad |
Use Scenario: Battery-powered air quality monitor with touch slider, OLED display, and BLE connectivity via companion MCU. IC Role / Device Role / Timing Role: Sensor interface and user input processor - handles CapSense slider, ambient light ADC emulation, and I²C data handoff. Use Value: Deep Sleep + I²C wake reduces average current to ~2 µA between sensor reads; IDACs enable ratiometric capacitance measurement without external references. |
Use Scenario: Sterilizable patient monitor with sealed front panel requiring high-reliability touch activation and ESD immunity. IC Role / Device Role / Timing Role: Dedicated CapSense controller interfacing to stainless-steel electrodes and communicating results via SPI/I²C to main SoC. Use Value: CSD architecture achieves >5000:1 SNR even after repeated autoclave cycles; hardware security disables debug post-programming to prevent firmware extraction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller with integrated capacitive sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G031F8P6 | No integrated CapSense engine; requires external RC network and firmware-based sensing; 64 MHz Cortex-M0+, 64 KB flash, 8 KB SRAM. | Lacks hardware-accelerated touch tuning and water tolerance - demands significant firmware development for robust touch in humid environments. | Select when higher CPU performance and larger memory are prioritized over turnkey capacitive sensing. |
| MAX32660 | Includes AES-128 and secure boot but no native CapSense; uses external charge-transfer ICs for touch; 96 MHz Cortex-M4F, 256 KB flash, 96 KB SRAM. | Requires additional analog components and layout complexity for touch; better suited for crypto-heavy sensor nodes than touch-first designs. | Select when cryptographic security and floating-point math outweigh integrated touch simplicity. |
Compared with STM32G031F8P6 and MAX32660, CY8C4014SXI-421T delivers lowest-touch-system-BOM cost and fastest time-to-market for CapSense-centric applications due to hardware-accelerated SmartSense™, single-chip integration, and production-ready PSoC Creator components - eliminating sensor firmware development and analog tuning effort.
Availability
CY8C4014SXI-421T is available at Aetrix Electronics and suitable for touch-enabled industrial HMIs, smart appliance control panels, and medical device keypads requiring stable component supply, long-term lifecycle support, and qualified automotive-grade traceability.
Supply support for CY8C4014SXI-421T 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 now develops, manufactures, and supports the PSoC family - a leader in programmable mixed-signal SoCs for embedded control and human interface applications.
CY8C4014SXI-421T belongs to the PSoC 4000 product line, designed specifically for cost-sensitive, space-constrained applications requiring integrated capacitive sensing, low-power operation, and rapid hardware/firmware co-development using PSoC Creator.
FAQ
What is the maximum operating frequency of the Arm Cortex-M0 core in CY8C4014SXI-421T?
The Arm Cortex-M0 core runs at up to 16 MHz, verified by the internal main oscillator (IMO) trimmed to ±2% accuracy at 24 MHz and divided down. This frequency is sustained with zero wait-state access to both 16 KB flash and 2 KB SRAM, enabling deterministic real-time response for touch scanning and control loops.
Does CY8C4014SXI-421T support hardware encryption or secure boot?
No - CY8C4014SXI-421T does not include hardware AES engines or secure boot ROM. It offers flash protection bits and debug disable functionality for basic IP protection, but lacks cryptographic accelerators found in higher-tier PSoC 4100/4200 devices or Infineon's OPTIGA™-enabled MCUs.
Can the IDACs be used for precision analog output beyond CapSense?
Yes - both IDACs support 0.125–8 mA output ranges with ±5% reference accuracy and can be configured as current sources or sinks. They are routinely used for biasing sensors, driving LED cathodes, or generating programmable analog references - though not intended for high-accuracy DAC replacement due to reference tolerance.
Is external crystal required for accurate timing in CY8C4014SXI-421T?
No - the device uses a factory-trimmed internal main oscillator (IMO) at 24 MHz (±2%) and internal low-frequency oscillator (ILO) at 40 kHz. External crystals are optional and only needed for applications requiring tighter timing accuracy than IMO provides, such as USB communication or precise RTC operation.
CY8C4014SXI-421T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- PSOC™ 4 CY8C4000
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0
- Core Size:
- 32-Bit Single-Core
- Speed:
- 16MHz
- Connectivity:
- I2C
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 13
- 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:
- D/A 1x7b, 1x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4014SXI-421T FAQ
1.How can I place an order for CY8C4014SXI-421T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4014SXI-421T 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 CY8C4014SXI-421T reliable?
The price and inventory of CY8C4014SXI-421T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4014SXI-421T is usually 5 days.
3.What payment methods are accepted for CY8C4014SXI-421T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4014SXI-421T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4014SXI-421T?
CY8C4014SXI-421T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4014SXI-421T 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 CY8C4014SXI-421T?
For technical support, including CY8C4014SXI-421T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4014SXI-421T requirements.
6.How does Aetrix verify that CY8C4014SXI-421T is sourced from the original manufacturer or authorized distributors?
All CY8C4014SXI-421T 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 CY8C4014SXI-421T meets industry standards.
7.What is the process for return or replacement of CY8C4014SXI-421T?
All CY8C4014SXI-421T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4014SXI-421T, 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 CY8C4014SXI-421T part is unused and in its original packaging.
Return procedure for CY8C4014SXI-421T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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