My Inquiry
My Account
Infineon Technologies CY8C4124LQI-S433T
- Part No.:
- CY8C4124LQI-S433T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4124LQI-S433T.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,171
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8C4124LQI-S433T from Infineon is a programmable 32-bit Arm® Cortex®-M0+ microcontroller with 48 MHz CPU, 64 KB flash, 8 KB SRAM, integrated CAPSENSE™ capacitive sensing, 12-bit 1-Msps SAR ADC, and three reconfigurable serial communication blocks (I²C/SPI/UART). It supports deep-sleep operation at 2.5 µA and delivers best-in-class SNR (>5:1) for water-tolerant touch interfaces in industrial HMI and consumer control panels.
For engineers reviewing the CY8C4124LQI-S433T datasheet, CY8C4124LQI-S433T pinout, CY8C4124LQI-S433T application, or CY8C4124LQI-S433T equivalent, key selection criteria include its dual opamp + comparator analog subsystem, SmartSense auto-tuning for CAPSENSE™, TCPWM kill-signal triggering for motor safety, and GPIO flexibility across 36 pins with programmable drive strength and slew rate.
Technical Context
The device integrates a fixed-function Arm® Cortex®-M0+ core with fully reconfigurable analog (CTB opamps, SAR ADC, LPC comparators, IDACs) and digital (TCPWM, SCB, PLD) peripherals routed via a flexible interconnect matrix. All analog blocks remain operational in Deep Sleep mode, enabling always-on touch wake-up with sub-3 µA system current.
Its clock system combines ±2% IMO, 32 kHz ILO, and WCO support for precision timing; CAPSENSE™ uses sigma-delta modulation with hardware-accelerated SmartSense tuning, eliminating manual calibration. Each of the three SCBs can be independently assigned as I²C master/slave, SPI master/slave, or UART TX/RX - no shared resource contention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz with single-cycle multiply - enables real-time control loops and deterministic interrupt latency ≤ 12 cycles. |
| Memory | 64 KB flash (with read accelerator) + 8 KB SRAM - supports firmware updates in-field and concurrent analog/digital processing buffers. |
| ADC | 12-bit SAR ADC @ 1 Msps with differential input, channel sequencer, and signal averaging - delivers high-resolution sensor acquisition with noise rejection. |
| CAPSENSE™ | Sigma-delta capacitive sensing with >5:1 SNR and automatic SmartSense tuning - achieves robust touch detection under wet conditions without host CPU intervention. |
| Power | 1.71–5.5 V operation; Deep Sleep current = 2.5 µA with opamps/comparators active - enables battery-powered devices with multi-year shelf life. |
| GPIO | 36 programmable pins with configurable drive modes (strong, open-drain, high-Z), slew rate, and pull-up/down - eliminates external level shifters and discrete logic. |
| Timing | Five 16-bit TCPWM blocks with center-aligned PWM, quadrature decode, and comparator-triggered kill signals - supports BLDC motor commutation and safety-critical shutdown. |
Pinout & Package
Package: 44-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]–P0[7] | General-purpose I/O with CAPSENSE™, analog, or digital function | Supports simultaneous touch sensing, ADC input buffering, and UART TX/RX - no dedicated peripheral pins required. |
| P1[0]–P1[7] | General-purpose I/O with LCD segment drive capability | Drives up to 44-segment LCD directly without external driver IC - reduces BOM count and PCB area. |
| P2[0]–P2[7] | General-purpose I/O with SCB and TCPWM functions | Configurable as I²C SDA/SCL, SPI MOSI/MISO/SCLK, UART RX/TX, or PWM output - runtime reconfiguration supported. |
| VDD, VSS | Power supply and ground | Single 1.71–5.5 V supply rail simplifies power design; separate analog/digital ground not required. |
| XRES | Active-low reset input | Accepts 1.2–5.5 V logic levels; internal pull-up ensures reliable reset during brown-out. |
| SWDCK, SWDIO | Serial Wire Debug interface | Enables full debug visibility (breakpoints, memory access, register view) using standard Arm® SWD protocol - no JTAG header needed. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Subsystem | Two CTB opamps + two low-power comparators + 12-bit SAR ADC + dual IDACs - enables closed-loop sensor conditioning, threshold detection, and capacitive measurement on any pin. |
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration - eliminates manual tuning effort and maintains stable touch performance across temperature/humidity drift. |
| Reconfigurable Serial Blocks | Three independent SCBs each supporting I²C/SPI/UART in any combination - allows mixed-protocol connectivity (e.g., I²C sensor + SPI display + UART debug) without pin conflicts. |
| Deep Sleep Analog Retention | Opamps, comparators, and CAPSENSE™ remain active at 2.5 µA system current - enables instant wake-on-touch with zero firmware overhead. |
| Flexible Clock System | IMO (±2%), ILO (32 kHz), and WCO support - provides accurate timing for RTC, PWM, and communication while minimizing external crystal count. |
Applications
| Industrial HMI Panels | Consumer Appliance Controls |
|---|---|
|
Use Scenario: Touch-enabled operator interface on PLC-mounted control panels exposed to dust, condensation, and ESD. IC Role / Device Role / Timing Role: Primary MCU handling CAPSENSE™ touch decoding, LCD segment driving, and Modbus RTU over UART. Use Value: Water-tolerant sigma-delta sensing and 2.5 µA Deep Sleep enable reliable wake-from-hibernate operation without mechanical buttons. |
Use Scenario: Wash-cycle selector and status display on front-loading washing machines with wet-finger operation. IC Role / Device Role / Timing Role: Single-chip touch controller + display driver + motor timing generator via TCPWM kill-signal outputs. Use Value: SmartSense auto-tuning maintains consistent touch response across detergent residue and humidity variations. |
| Medical Device Keypads | Smart Home Sensors |
|
Use Scenario: Disinfectant-resistant touch interface on portable infusion pumps requiring IEC 60601-1 compliance. IC Role / Device Role / Timing Role: Safety-monitored MCU executing touch validation, analog sensor acquisition (temperature/pressure), and isolated UART comms. Use Value: Comparator-triggered TCPWM kill signals enforce immediate motor stop on fault detection - meets Class B functional safety requirements. |
Use Scenario: Battery-powered occupancy sensor with ambient light and PIR fusion, reporting via BLE (external transceiver). IC Role / Device Role / Timing Role: Low-power sensor hub managing CAPSENSE™ proximity wake-up, SAR ADC for light sensing, and SPI to BLE SoC. Use Value: 2.5 µA Deep Sleep with active analog blocks extends CR2032 battery life beyond 3 years in typical deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4124AZI-S433 | Same core/peripherals but in 40-pin QFN package; lacks WCO support and has reduced GPIO count (28 pins). | Preferred for space-constrained designs where external crystal is omitted and LCD driving is unnecessary. | Select when board area is critical and CAPSENSE™ operates without watch crystal dependency. |
| CY8C4024LQI-S412 | Lower-tier PSoC™ 4100S variant: 32 KB flash, 4 KB SRAM, no LCD drive, only two SCBs, and no SmartSense. | Suitable for cost-sensitive touch-only applications without mixed-protocol comms or display integration. | Choose when budget limits require trimming non-essential features while retaining CAPSENSE™ and Deep Sleep capability. |
Compared with CY8C4124LQI-S433T, the CY8C4124AZI-S433 trades package size and WCO for footprint reduction, while the CY8C4024LQI-S412 sacrifices memory, peripherals, and SmartSense to meet aggressive cost targets - neither offers identical analog retention or TCPWM safety features.
Availability
CY8C4124LQI-S433T is available at Aetrix Electronics and suitable for industrial HMI, medical keypad, and smart appliance control applications requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.
Supply support for CY8C4124LQI-S433T 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 leader specializing in power management, sensing, and microcontroller solutions for industrial, automotive, and IoT markets.
CY8C4124LQI-S433T belongs to the PSoC™ 4100S product line - designed specifically for cost-effective, highly integrated human-interface and sensor-fusion applications demanding programmable analog, low-power operation, and rapid touch development.
FAQ
Does CY8C4124LQI-S433T support USB device functionality?
No. The device does not include a USB PHY or USB controller. Communication is limited to the three reconfigurable SCBs (I²C, SPI, UART) and SWD debug interface. USB connectivity requires an external transceiver or bridge IC interfaced via UART or SPI.
Can the 12-bit SAR ADC perform simultaneous sampling on multiple channels?
No. The SAR ADC uses a single conversion engine with a channel sequencer that acquires inputs sequentially - not concurrently. Signal averaging across up to 64 samples per channel is supported to improve effective resolution, but true simultaneous sampling requires external hardware.
Is the SmartSense auto-tuning feature enabled by default after power-up?
Yes. SmartSense runs automatically during initialization and recalibrates on demand or periodically in runtime. No host firmware intervention is required to maintain baseline stability, though developers may trigger manual recalibration via the CAPSENSE™ API if environmental shifts exceed adaptive thresholds.
What is the maximum operating temperature for CY8C4124LQI-S433T in industrial applications?
The device is rated for –40 °C to +85 °C ambient temperature per its industrial-grade qualification. This range is validated across all specified electrical parameters including flash endurance, SRAM retention, and analog block accuracy - no derating required within this envelope.
CY8C4124LQI-S433T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4100S
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit Single-Core
- Speed:
- 24MHz
- Connectivity:
- I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, CapSense, LCD, LVD, POR, PWM, WDT
- Number of I/O:
- 34
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 16x10b Slope, 16x12b SAR; D/A 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4124LQI-S433T FAQ
1.How can I place an order for CY8C4124LQI-S433T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4124LQI-S433T 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 CY8C4124LQI-S433T reliable?
The price and inventory of CY8C4124LQI-S433T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4124LQI-S433T is usually 5 days.
3.What payment methods are accepted for CY8C4124LQI-S433T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4124LQI-S433T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4124LQI-S433T?
CY8C4124LQI-S433T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4124LQI-S433T 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 CY8C4124LQI-S433T?
For technical support, including CY8C4124LQI-S433T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4124LQI-S433T requirements.
6.How does Aetrix verify that CY8C4124LQI-S433T is sourced from the original manufacturer or authorized distributors?
All CY8C4124LQI-S433T 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 CY8C4124LQI-S433T meets industry standards.
7.What is the process for return or replacement of CY8C4124LQI-S433T?
All CY8C4124LQI-S433T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4124LQI-S433T, 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 CY8C4124LQI-S433T part is unused and in its original packaging.
Return procedure for CY8C4124LQI-S433T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8C4124LQI-S433T 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…
