My Inquiry
My Account
Infineon Technologies CY8C4026LQI-T412T
- Part No.:
- CY8C4026LQI-T412T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
CY8C4026LQI-T412T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 24UFQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,118
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8C4026LQI-T412T from Infineon is an AEC-Q100 qualified automotive-grade PSoC™ 4000S microcontroller featuring a 48-MHz Arm® Cortex®-M0+ CPU, 32 KB flash, 4 KB SRAM, integrated CAPSENSE™ capacitive sensing with >5:1 SNR, two low-power comparators operating in Deep Sleep mode (2.5 µA system current), and five 16-bit TCPWM blocks - deployed in automotive body control modules for touch-enabled interior switches.
For engineers reviewing the CY8C4026LQI-T412T datasheet, CY8C4026LQI-T412T pinout, CY8C4026LQI-T412T application, or CY8C4026LQI-T412T equivalent, key selection criteria include AEC-Q100 Grade S (–40°C to +105°C), reconfigurable SCBs supporting I²C/SPI/UART, programmable analog blocks (IDACs, ADC via GPIO), and SWD debug interface compatibility with industry-standard tools.
Technical Context
The CY8C4026LQI-T412T implements a single-layer AHB-Lite interconnect architecture linking the Cortex-M0+ core to peripherals including two Serial Communication Blocks (SCBs), five TCPWM units, and a dedicated CAPSENSE™ subsystem with CSD engine. Its clock system integrates IMO (48 MHz), ILO (32.768 kHz), and WCO support for precise timing across sleep/wake transitions.
It supports Deep Sleep mode with active analog (comparators, IDACs) and digital retention, enabled by programmable GPIO drive modes, slew rates, and configurable interrupt routing through IRQMUX - critical for low-power automotive wake-on-touch and sensor monitoring functions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz - enables real-time deterministic control of motor drivers and touch interfaces without external co-processors. |
| Flash / SRAM | 32 KB flash with read accelerator / 4 KB SRAM - sufficient for CAPSENSE™ firmware, TCPWM motor control algorithms, and dual-SCB communication stacks. |
| Operating Voltage | 1.71 V to 5.5 V - supports direct connection to automotive 3.3 V or 5 V rails without level-shifting circuitry. |
| Temperature Grade | AEC-Q100 Grade S (–40°C to +105°C) - validated for under-hood and cabin-mounted automotive ECUs requiring extended thermal reliability. |
| GPIO Count | 34 programmable pins - all support CAPSENSE™, analog input, or digital I/O with configurable drive strength and slew rate for EMI-controlled signal integrity. |
| Capacitive Sensing | CAPSENSE™ CSD with >5:1 SNR and automatic hardware tuning - delivers robust touch detection through glass or plastic overlays in humid or wet environments. |
| Debug Interface | Arm® Serial-Wire Debug (SWD) - enables full on-chip debugging in final automotive systems using standard production silicon, no emulator required. |
Pinout & Package
Package: 40-pin QFN (6 × 6 mm, 0.5 mm pitch), thermally enhanced with exposed pad for automotive thermal dissipation requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | Accepts 1.71–5.5 V; decoupling required per automotive EMC standards for stable operation during load dump transients. |
| GND | Ground reference | Dedicated ground pins adjacent to VDD and analog sections minimize noise coupling into CAPSENSE™ and comparator circuits. |
| XRES | External reset input | Active-low, Schmitt-triggered; supports system-level reset coordination with vehicle power management ICs. |
| SWDIO / SWCLK | Debug interface signals | Enable in-system programming and real-time trace without dedicated debug headers - reduces PCB footprint and BOM count. |
| P0[0]–P0[7] | Port 0 GPIO | Support CAPSENSE™ CSD, analog input, or PWM output; configurable slew rate prevents EMI emissions in high-speed switching applications. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable SCBs | Two independent serial blocks dynamically switch between I²C, SPI, and UART protocols - eliminates need for discrete protocol translators in multi-sensor clusters. |
| Programmable TCPWM | Five 16-bit timer/counter/PWM units with center-aligned, edge-aligned, and pseudo-random modulation - supports precise motor phase control and LED dimming with hardware-triggered kill signals. |
| Deep Sleep Power | 2.5 µA digital system current with comparators and IDACs active - enables always-on capacitive wake detection while meeting automotive quiescent current budgets. |
| LCD Segment Drive | All GPIOs support LCD segment drive - allows integration of simple status displays (e.g., HVAC panel indicators) without external display controllers. |
Applications
| Automotive Interior Touch Panel | Body Control Module (BCM) |
|---|---|
Use Scenario: Capacitive touch buttons on center console with water tolerance and glove operation. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ CSD algorithm, managing button debounce, and communicating status via I²C to main ECU. Use Value: >5:1 SNR and automatic hardware tuning ensure reliable detection despite condensation or surface contaminants. | Use Scenario: Centralized control of door locks, window lifts, and mirror adjustment with low-power wake-on-event capability. IC Role / Device Role / Timing Role: System controller coordinating CAN/LIN gateway functions, PWM motor drivers, and analog sensor inputs (e.g., temperature, voltage). Use Value: Integrated TCPWM blocks and programmable logic reduce external component count while maintaining AEC-Q100 compliance. |
| Smart Lighting Control Unit | Climate Control Interface |
Use Scenario: RGB LED ambient lighting with smooth dimming and color mixing in dashboard and footwell zones. IC Role / Device Role / Timing Role: PWM generator and I²C master controlling LED driver ICs; uses IDACs for analog sensor feedback. Use Value: Five TCPWM units support simultaneous independent dimming channels with center-aligned mode for reduced EMI. | Use Scenario: HVAC control panel with rotary encoder emulation, temperature display, and fan speed regulation. IC Role / Device Role / Timing Role: Touch-sensing MCU interfacing to thermistors, driving LCD segments, and generating PWM for blower motor control. Use Value: All-GPIO LCD drive capability eliminates external display driver IC, reducing BOM cost and board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4026LQI-S412T | Same die, AEC-Q100 Grade E (–40°C to +125°C); higher max junction temperature rating. | Targeted for under-hood applications (e.g., engine bay sensors) where ambient exceeds +105°C. | Select when thermal environment exceeds Grade S limits; otherwise identical firmware and pinout. |
| CY8C4025LQI-T412T | Same package, 16 KB flash / 2 KB SRAM; lacks one SCB and one TCPWM block. | Suitable for cost-sensitive entry-level touch interfaces with reduced peripheral demand. | Choose only if memory and peripheral count are sufficient; not upward-compatible for full CY8C4026 feature set. |
Compared with CY8C4026LQI-S412T, the T412T offers lower thermal margin but identical functionality at reduced cost; versus CY8C4025LQI-T412T, it provides double flash/SRAM and full peripheral complement - essential for complex automotive HMI with concurrent communication and motor control.
Availability
CY8C4026LQI-T412T is available at Aetrix Electronics and suitable for automotive interior HMI, body control modules, and smart lighting systems requiring stable component supply, AEC-Q100 qualification, and long-term lifecycle assurance.
Supply support for CY8C4026LQI-T412T 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 MCUs, and security solutions, with global R&D and manufacturing infrastructure.
The PSoC™ 4000S product line targets automotive-grade programmable embedded controllers, integrating capacitive sensing, mixed-signal peripherals, and Arm® Cortex®-M0+ processing for intelligent human-machine interfaces and distributed control units.
FAQ
What is the maximum operating frequency of the Arm® Cortex®-M0+ core in CY8C4026LQI-T412T?
The CY8C4026LQI-T412T operates its Arm® Cortex®-M0+ CPU at up to 48 MHz, derived from the internal main oscillator (IMO). This frequency is fully supported across the entire AEC-Q100 Grade S temperature range (–40°C to +105°C) and voltage range (1.71 V to 5.5 V), enabling deterministic real-time execution of CAPSENSE™ and motor control firmware without external clock sources.
Does CY8C4026LQI-T412T support hardware-accelerated cryptographic functions?
No, the CY8C4026LQI-T412T does not include dedicated cryptographic accelerators or secure boot hardware. It relies on software-based implementations for basic encryption tasks. For hardware security features such as AES acceleration, secure key storage, or true random number generation, Infineon's PSoC™ 4100S or PSoC™ 6 families are required - the 4000S series prioritizes analog/digital reconfigurability and capacitive sensing over cryptographic capability.
Can all 34 GPIO pins be used simultaneously for CAPSENSE™ electrode connections?
Yes, all 34 GPIO pins support CAPSENSE™ CSD electrode connections, but practical electrode count is constrained by mutual capacitance crosstalk and scan time. The CSD block supports up to 32 electrodes in a single design, and simultaneous use of all pins requires careful layout separation (>5 mm spacing) and guard ring implementation to maintain >5:1 SNR. Pin multiplexing is managed automatically by PSoC™ Creator during component configuration.
Is the SWD debug interface accessible in Deep Sleep mode?
No, the SWD interface is disabled in Deep Sleep mode to meet the 2.5 µA system current specification. Debug access requires waking the device into Active or Sleep mode via XRES, GPIO interrupt, or comparator event. Once awake, full SWD functionality - including breakpoints, register inspection, and memory read/write - is restored without reset, enabling low-overhead debug sessions during development and validation.
CY8C4026LQI-T412T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 24-UFQFN Exposed Pad
- Series:
- PSOC™ 4000T
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- 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:
- 19
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4026LQI-T412T FAQ
1.How can I place an order for CY8C4026LQI-T412T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4026LQI-T412T 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 CY8C4026LQI-T412T reliable?
The price and inventory of CY8C4026LQI-T412T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4026LQI-T412T is usually 5 days.
3.What payment methods are accepted for CY8C4026LQI-T412T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4026LQI-T412T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4026LQI-T412T?
CY8C4026LQI-T412T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4026LQI-T412T 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 CY8C4026LQI-T412T?
For technical support, including CY8C4026LQI-T412T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4026LQI-T412T requirements.
6.How does Aetrix verify that CY8C4026LQI-T412T is sourced from the original manufacturer or authorized distributors?
All CY8C4026LQI-T412T 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 CY8C4026LQI-T412T meets industry standards.
7.What is the process for return or replacement of CY8C4026LQI-T412T?
All CY8C4026LQI-T412T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4026LQI-T412T, 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 CY8C4026LQI-T412T part is unused and in its original packaging.
Return procedure for CY8C4026LQI-T412T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8C4026LQI-T412T 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…
