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Infineon Technologies CY8C4745AZI-S403
- Part No.:
- CY8C4745AZI-S403
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
CY8C4745AZI-S403.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,693
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Product details
Overview
CY8C4745AZI-S403 from Infineon Technologies (formerly Cypress Semiconductor) is a programmable 32-bit Arm® Cortex™-M0+ microcontroller with integrated MagSense™ inductive sensing and CapSense® capacitive sensing, 48 MHz CPU clock, 32 KB flash, 4 KB SRAM, and up to 36 GPIOs in a 48-pin TQFP package. It enables metal and non-metal object detection in industrial HMI, proximity interfaces, and touchless control systems.
For engineers reviewing the CY8C4745AZI-S403 datasheet, CY8C4745AZI-S403 pinout, CY8C4745AZI-S403 application, or CY8C4745AZI-S403 equivalent, key selection criteria include its dual-sensing capability (MagSense + CapSense), Deep Sleep current of 2.5 µA, 1.71–5.5 V operating range, and reconfigurable SCB blocks supporting I²C/SPI/UART.
Technical Context
The CY8C4745AZI-S403 implements a single-layer AHB-Lite interconnect architecture with tightly coupled flash (32 KB, Read Accelerator) and SRAM (4 KB, zero-wait-state at 48 MHz). Its clock system integrates IMO (24–48 MHz, ±2%), ILO (40 kHz), and WCO (32 kHz) with eight programmable dividers-including two fractional-enabling precise peripheral clocking.
It features five 16-bit TCPWM blocks with center-aligned/edge/pseudo-random PWM modes and comparator-triggered kill signals for motor control safety. Analog subsystem includes one 10-bit single-slope ADC, two IDACs (±5% reference), and two low-power comparators operational in Deep Sleep mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+, 48 MHz max - delivers deterministic real-time response for sensor fusion and HMI control loops. |
| Flash Memory | 32 KB with Read Accelerator - enables near-SRAM execution speed for firmware with frequent ISR handling. |
| SRAM | 4 KB, zero-wait-state - supports real-time buffering of MagSense/CapSense raw data without CPU stall. |
| Sensing Capability | Up to 16 MagSense inductive channels + CapSense Sigma-Delta (SNR >5:1) - allows simultaneous metal/non-metal detection on shared GPIOs. |
| Power Modes | Deep Sleep @ 2.5 µA digital current - sustains analog sensing and wake-on-event operation for battery-powered edge nodes. |
| Communication | 2× SCBs configurable as I²C/SPI/UART - provides flexible interface routing without external level shifters or protocol converters. |
| GPIO | 36 pins, all programmable for analog/digital/sensing - eliminates need for external multiplexers or dedicated sensor ASICs. |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | Accepts 1.71–5.5 V; powers CPU, flash, SRAM, and all digital/analog peripherals. |
| VSS | Digital ground | Reference return for digital logic and SCB interfaces; must be low-impedance connection to PCB ground plane. |
| XRES | External reset input | Active-low asynchronous reset with internal pull-up; asserts full chip reset including flash controller and clock system. |
| SWDIO / SWCLK | Debug interface | Two-wire Serial Wire Debug (SWD) for programming, real-time tracing, and breakpoint debugging. |
| P0[0]–P0[7] | Programmable GPIO bank | Supports CapSense CSD, MagSense coil drive, analog input, or digital I/O; configurable slew rate and drive strength. |
| SCB0_SDA / SCB0_SCL | I²C interface pins | Configurable as open-drain I²C bus lines with internal pull-ups; support standard/fast-mode speeds up to 400 kHz. |
Key Features
| Feature | Design Value |
|---|---|
| MagSense™ inductive sensing | Enables sub-190 nm metal deflection detection with automatic calibration across manufacturing variation - reduces mechanical switch wear in industrial controls. |
| CapSense® Sigma-Delta (CSD) | Delivers >5:1 SNR and water-tolerant touch performance - supports reliable user interface operation in humid or wet environments. |
| SmartIO Boolean logic | Permits hardware-level signal conditioning (AND/OR/XOR) on port inputs/outputs without CPU intervention - offloads timing-critical tasks from firmware. |
| Deep Sleep with active analog | Maintains MagSense/CapSense acquisition and comparator monitoring while CPU and flash are powered down - extends battery life in portable sensors. |
| Reconfigurable SCBs | Each Serial Communication Block can be dynamically assigned as I²C, SPI, or UART at runtime - simplifies BOM consolidation and field firmware updates. |
Applications
| Industrial HMI Panels | Touchless Appliance Controls |
|---|---|
Use Scenario: Metal-detecting pushbuttons and proximity sliders on factory operator panels exposed to oil, dust, and vibration. IC Role / Device Role / Timing Role: Primary MCU executing real-time MagSense scan and CapSense baseline tracking; generates interrupt-driven UI state transitions. Use Value: Eliminates mechanical switch failure and ingress-related corrosion; supports IP66-rated front-panel designs without conductive overlays. | Use Scenario: Kitchen appliance control surfaces requiring gesture recognition and water-resistant touch under condensation. IC Role / Device Role / Timing Role: Dual-sensing hub performing synchronized MagSense (metal pot detection) and CapSense (touch/water presence) with SmartSense auto-tuning. Use Value: Enables reliable activation even with wet fingers or surface moisture; reduces false triggers via hardware-accelerated noise rejection. |
| Medical Device Interfaces | Automotive Cabin Sensors |
Use Scenario: Sterilizable touchless controls on infusion pumps and diagnostic equipment where gloves or disinfectants preclude capacitive-only solutions. IC Role / Device Role / Timing Role: Sensor fusion processor running concurrent MagSense (glove-covered finger proximity) and CapSense (bare-hand confirmation) with Deep Sleep wake-on-event. Use Value: Meets IEC 60601-1 creepage/clearance requirements by eliminating exposed conductive traces; supports glove-mode operation without software mode switching. | Use Scenario: Occupancy and gesture detection behind automotive trim panels using embedded coils and segmented electrodes. IC Role / Device Role / Timing Role: Low-power cabin monitor managing MagSense coil excitation timing and CapSense electrode scanning in <100 ms cycles. Use Value: Achieves <2.5 µA Deep Sleep current enabling always-on cabin awareness without draining 12 V battery during vehicle sleep mode. |
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 |
|---|---|---|---|
| CY8C4745AZI-S402 | Same die, identical specs, but shipped in tape-and-reel (TR) vs. tray (S403); no functional difference. | Identical use cases; S402 preferred for automated SMT assembly; S403 for prototyping or low-volume hand-soldering. | Select S403 for evaluation, small-batch builds, or when tray packaging simplifies manual handling and inventory staging. |
| CY8C4747AZI-S403 | Same package and pinout, but with 64 KB flash and 8 KB SRAM - higher memory footprint, same sensing/peripheral set. | Required only when firmware exceeds 32 KB or requires larger data buffers (e.g., multi-sensor fusion algorithms). | Choose CY8C4747AZI-S403 only if code size or runtime data allocation confirms >32 KB flash or >4 KB SRAM demand. |
Compared with CY8C4745AZI-S402 and CY8C4747AZI-S403, the CY8C4745AZI-S403 offers optimal cost-performance balance for dual-sensing applications with moderate firmware complexity and no memory headroom constraints.
Availability
CY8C4745AZI-S403 is available at Aetrix Electronics and suitable for industrial HMI, touchless appliance controls, medical device interfaces, and automotive cabin sensors requiring stable component supply and long-term lifecycle support.
Supply support for CY8C4745AZI-S403 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, delivering power management, sensing, and microcontroller solutions for industrial, automotive, and IoT applications.
The PSoC 4700S family - including CY8C4745AZI-S403 - was designed specifically to unify inductive and capacitive sensing in a single low-power MCU, targeting robust human-machine interaction in harsh or hygienic environments.
FAQ
What development tools are required to program CY8C4745AZI-S403?
PSoC Creator IDE (free, Windows-only) is the official development environment, providing schematic-based hardware configuration, API-driven firmware generation, and built-in CapSense/MagSense tuning tools. Debugging uses standard SWD via MiniProg3 or KitProg2 programmers. Arm GCC toolchain integration is supported for advanced users.
Does CY8C4745AZI-S403 support hardware-accelerated encryption?
No. The CY8C4745AZI-S403 does not include cryptographic accelerators (AES, SHA, TRNG) or secure boot features. It relies on software-based encryption libraries for basic security needs. For hardware security, consider Infineon's PSoC 6 series or OPTIGA™ Trust family.
Can MagSense and CapSense operate simultaneously without interference?
Yes. MagSense operates at ~1–10 MHz coil excitation frequencies, while CapSense CSD uses sigma-delta modulation centered at ~100–500 kHz. The PSoC 4700S hardware scheduler and dedicated analog routing prevent crosstalk, and Cypress-provided components include time-multiplexed scanning sequences validated for coexistence.
Is the 48-pin TQFP package RoHS and REACH compliant?
Yes. CY8C4745AZI-S403 is manufactured per Infineon's qualified green packaging standards: lead-free (Pb-free), halogen-free, and fully compliant with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, including SVHC screening.
CY8C4745AZI-S403 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-LQFP
- Series:
- PSOC™ 4 CY8C4700S
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, LCD, LVD, POR, PWM, WDT
- Number of I/O:
- 36
- Program Memory Size:
- 32KB (32K 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; D/A 2x7b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4745AZI-S403 FAQ
1.How can I place an order for CY8C4745AZI-S403 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4745AZI-S403 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 CY8C4745AZI-S403 reliable?
The price and inventory of CY8C4745AZI-S403 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4745AZI-S403 is usually 5 days.
3.What payment methods are accepted for CY8C4745AZI-S403?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4745AZI-S403 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4745AZI-S403?
CY8C4745AZI-S403 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4745AZI-S403 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 CY8C4745AZI-S403?
For technical support, including CY8C4745AZI-S403 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4745AZI-S403 requirements.
6.How does Aetrix verify that CY8C4745AZI-S403 is sourced from the original manufacturer or authorized distributors?
All CY8C4745AZI-S403 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 CY8C4745AZI-S403 meets industry standards.
7.What is the process for return or replacement of CY8C4745AZI-S403?
All CY8C4745AZI-S403 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4745AZI-S403, 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 CY8C4745AZI-S403 part is unused and in its original packaging.
Return procedure for CY8C4745AZI-S403:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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