My Inquiry
My Account
Infineon Technologies CY8C4127AZI-S443
- Part No.:
- CY8C4127AZI-S443
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
CY8C4127AZI-S443.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,942
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8C4127AZI-S443 from Infineon is a 32-bit Arm® Cortex®-M0+ programmable system-on-chip (PSoC™) with 128 KB flash, 16 KB SRAM, and integrated CAPSENSE™ capacitive sensing. It features five reconfigurable serial communication blocks (SCBs), eight 16-bit TCPWMs, a CAN 2.0B controller with TTCAN support, and operates from 1.71 V to 5.5 V. Used in industrial HMI touch panels requiring robust water-tolerant sensing and real-time motor control.
For engineers reviewing the CY8C4127AZI-S443 datasheet, CY8C4127AZI-S443 pinout, CY8C4127AZI-S443 application, or CY8C4127AZI-S443 equivalent, key selection criteria include Deep Sleep current (2.5 µA), CSD SNR (>5:1), CAN 2.0B + TTCAN compliance, 48 MHz CPU clock, and 44-pin TQFP package compatibility with CAPSENSE™ routing flexibility.
Technical Context
The device integrates an Arm® Cortex®-M0+ core with single-cycle multiply, coupled with programmable analog blocks including two opamps (Deep Sleep-capable), a 12-bit 1-Msps SAR ADC, and dual IDACs. Its digital subsystem includes eight TCPWM blocks supporting quadrature decode, center-aligned PWM, and comparator-triggered kill signals for motor safety.
System-level timing relies on multiple oscillators: 4–33 MHz ECO, 32 kHz WCO, ±2% IMO, and 32 kHz ILO - enabling precise low-power RTC and jitter-sensitive communication. The CAN block implements full CAN 2.0B with TTCAN time-triggered scheduling for deterministic automotive and industrial networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time firmware execution with deterministic interrupt latency for motor control loops. |
| Flash / SRAM | 128 KB flash with read accelerator / 16 KB SRAM - supports complex CAPSENSE™ tuning algorithms and multi-protocol stack coexistence. |
| ADC | 12-bit 1-Msps SAR ADC with channel sequencer - allows synchronized sampling across up to 16 channels for sensor fusion in industrial monitoring. |
| CAPSENSE™ | Capacitive sigma-delta (CSD) with >5:1 SNR and SmartSense auto-tuning - delivers reliable touch detection under wet conditions without firmware calibration. |
| CAN Interface | CAN 2.0B with Time-Triggered CAN (TTCAN) - provides scheduled message transmission windows essential for safety-critical distributed control systems. |
| GPIO Count | Up to 54 programmable GPIOs in 44LD TQFP - all pins support CAPSENSE™, analog, or digital functions with configurable drive strength and slew rate. |
| Low-Power Mode | Deep Sleep mode with 2.5 µA digital current and active analog - sustains real-time sensing while extending battery life in portable HMIs. |
Pinout & Package
Package: 44-pin TQFP (0.8 mm pitch), RoHS-compliant, lead-free, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | 1.71–5.5 V input; powers CPU, memory, and all digital/analog peripherals - requires local decoupling per datasheet layout guidelines. |
| GND | Digital ground | Reference plane for all digital logic and SCB interfaces; must be connected to analog ground via single-point star topology. |
| P0[0]–P0[7] | Programmable GPIO | Support CAPSENSE™, analog input/output, or SCB functions; each pin configurable for high-drive or low-slew modes to reduce EMI. |
| P1[0]–P1[7] | Programmable GPIO | Include dedicated CAN_TX/CAN_RX on P1[2]/P1[3]; enable direct connection to ISO 11898-2 transceivers without external routing. |
| XTAL_IN/XTAL_OUT | External crystal oscillator | Accepts 4–33 MHz crystal for precision timing; required for USB, CAN, or high-accuracy RTC operation. |
| SWDIO/SWCLK | Serial Wire Debug | Two-pin debug interface supporting full chip programming, breakpointing, and real-time trace - no JTAG header needed. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable Analog Blocks | Two opamps usable as ADC buffers, comparators, or high-drive outputs - retain functionality in Deep Sleep to monitor sensors without waking CPU. |
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration - eliminates manual threshold tuning and adapts to environmental drift over temperature/humidity. |
| Runtime-Reconfigurable SCBs | Five serial blocks independently assignable as I²C, SPI, or UART - enables dynamic peripheral remapping during runtime for flexible communication protocol switching. |
| TTCAN Scheduling Engine | Deterministic CAN message transmission with microsecond-level timing accuracy - ensures predictable network behavior in safety-critical motion control applications. |
| True Random Number Generator | On-chip TRNG compliant with NIST SP 800-90B - provides entropy source for secure key generation in bootloader authentication and firmware updates. |
Applications
| Industrial HMI Touch Panels | Automotive Body Control Modules |
|---|---|
Use Scenario: Waterproof touch interface on factory machine operator panels exposed to coolant splashes and metal dust. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ firmware, managing display refresh via GPIO-driven LCD segments, and coordinating CAN bus diagnostics. Use Value: CSD's >5:1 SNR and SmartSense eliminate false triggers; TTCAN ensures synchronized status reporting across door, lighting, and HVAC nodes. | Use Scenario: Central body controller aggregating inputs from seat position sensors, ambient light detectors, and window switches. IC Role / Device Role / Timing Role: Real-time sensor hub with 12-bit SAR ADC sampling analog sensors, TCPWM driving LED dimming, and CAN 2.0B transmitting status frames every 10 ms. Use Value: Integrated opamps buffer high-impedance sensor signals; Deep Sleep mode reduces quiescent current to <3 µA during vehicle sleep state. |
| Smart Home Thermostat Controllers | Medical Patient Monitor Front-Ends |
Use Scenario: Wall-mounted thermostat with capacitive buttons, ambient temperature/humidity sensing, and Zigbee/Wi-Fi coexistence via UART-to-module bridge. IC Role / Device Role / Timing Role: Main application processor running ModusToolbox™ BSP, managing CAPSENSE™ UI, reading I²C temperature sensors, and buffering UART data to wireless module. Use Value: Five SCBs allow concurrent I²C (sensor), UART (radio), and SPI (EEPROM) without software arbitration; 16 KB SRAM holds encryption keys and sensor history. | Use Scenario: Portable patient monitor with ECG electrode interface, OLED display driver, and USB CDC for clinical data export. IC Role / Device Role / Timing Role: Signal acquisition controller using SAR ADC for analog front-end digitization, opamp-based instrumentation amplifier gain stages, and USB-capable SCB for host communication. Use Value: Programmable analog blocks replace discrete opamp circuits; TRNG secures patient data before USB transmission; 48 MHz CPU handles real-time filtering algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4128LQI-S433 | 64-pin QFN, 256 KB flash, same CPU/peripherals - adds USBFS block and extra GPIOs. | Required when USB device connectivity or >44 I/Os are needed; not pin-compatible with CY8C4127AZI-S443. | Select for designs needing native USB or higher I/O density; requires PCB redesign due to different package and pin count. |
| STM32G071KBT6 | Arm® Cortex®-M0+, 128 KB flash, no integrated CAPSENSE™ or CSD - relies on external RC networks or software-based touch. | Suitable for cost-sensitive non-touch applications; lacks hardware-accelerated capacitive sensing and TTCAN. | Choose when CAPSENSE™ and TTCAN are unnecessary; verify external touch solution meets SNR and water tolerance requirements. |
Compared with CY8C4127AZI-S443, CY8C4128LQI-S433 offers expanded memory and USB but demands larger layout area, while STM32G071KBT6 reduces BOM cost but forfeits Infineon's hardware CAPSENSE™ and deterministic TTCAN - impacting design cycle time and reliability in touch/HMI use cases.
Availability
CY8C4127AZI-S443 is available at Aetrix Electronics and suitable for industrial HMI touch panels, automotive body controllers, smart home thermostats, and medical patient monitor front-ends requiring stable component supply and long-term lifecycle assurance.
Supply support for CY8C4127AZI-S443 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 German semiconductor manufacturer specializing in power management, automotive ICs, and secure microcontrollers, with global R&D and manufacturing infrastructure.
CY8C41xx PSoC™ 4100S Plus is part of Infineon's programmable mixed-signal MCU product line, designed specifically for applications demanding integrated capacitive sensing, deterministic communication, and ultra-low-power operation in space-constrained industrial and consumer devices.
FAQ
Does CY8C4127AZI-S443 support USB device functionality?
No. This variant lacks a USBFS block. USB capability is present only in higher-pin-count members like CY8C4128LQI-S433. CY8C4127AZI-S443 supports UART, SPI, and I²C via its five SCBs - sufficient for bridging to external USB-UART or USB-to-SPI bridge ICs in end equipment.
What is the maximum operating temperature for CY8C4127AZI-S443?
The device is rated for industrial temperature range: –40 °C to +85 °C. This is confirmed in Section 5.2 ("Device level specifications") of datasheet 002-19966 Rev. *L, where ambient operating temperature (TA) is specified as –40 °C to +85 °C under recommended operating conditions.
Can CAPSENSE™ operate during Deep Sleep mode?
Yes. The CSD block remains active in Deep Sleep mode with typical current consumption of 15 µA. Combined with the 2.5 µA digital system current, this enables continuous touch wake-up detection without CPU intervention - critical for battery-powered HMIs requiring instant responsiveness.
Is the CAN controller compatible with ISO 11898-2 physical layer?
Yes. The integrated CAN 2.0B controller supports standard CAN signaling and is fully compatible with ISO 11898-2 transceivers. Pins P1[2] (CAN_TX) and P1[3] (CAN_RX) are electrically optimized for differential signaling and require external transceiver ICs such as TJA1042T/3 for bus interfacing.
CY8C4127AZI-S443 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-LQFP
- Series:
- PSOC™ 4 CY8C4000S
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit
- Speed:
- 24MHz
- Connectivity:
- I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, CapSense, LCD, POR, PWM, WDT
- Number of I/O:
- 38
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 16x10/12b SAR; D/A 2x7b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4127AZI-S443 FAQ
1.How can I place an order for CY8C4127AZI-S443 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4127AZI-S443 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 CY8C4127AZI-S443 reliable?
The price and inventory of CY8C4127AZI-S443 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4127AZI-S443 is usually 5 days.
3.What payment methods are accepted for CY8C4127AZI-S443?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4127AZI-S443 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4127AZI-S443?
CY8C4127AZI-S443 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4127AZI-S443 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 CY8C4127AZI-S443?
For technical support, including CY8C4127AZI-S443 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4127AZI-S443 requirements.
6.How does Aetrix verify that CY8C4127AZI-S443 is sourced from the original manufacturer or authorized distributors?
All CY8C4127AZI-S443 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 CY8C4127AZI-S443 meets industry standards.
7.What is the process for return or replacement of CY8C4127AZI-S443?
All CY8C4127AZI-S443 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4127AZI-S443, 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 CY8C4127AZI-S443 part is unused and in its original packaging.
Return procedure for CY8C4127AZI-S443:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8C4127AZI-S443 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
