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Infineon Technologies CY8C4744AZI-S403
- Part No.:
- CY8C4744AZI-S403
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
CY8C4744AZI-S403.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,024
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Product details
Overview
CY8C4744AZI-S403 from Infineon Technologies (formerly Cypress) is a programmable 32-bit Arm Cortex-M0+ microcontroller with integrated MagSense™ inductive sensing and CapSense® capacitive sensing. It features 48 MHz CPU, 32 KB flash, 4 KB SRAM, up to 16 inductive sensors, and dual reconfigurable SCBs supporting I²C/SPI/UART. Used in metal-detecting proximity interfaces and touch-sensitive industrial HMI panels.
For engineers reviewing the CY8C4744AZI-S403 datasheet, CY8C4744AZI-S403 pinout, CY8C4744AZI-S403 application, or CY8C4744AZI-S403 equivalent, key selection criteria include inductive sensing resolution (<190 nm metal deflection), Deep Sleep current (2.5 µA), TCPWM kill-signal triggering for motor control, and MagSense calibration autonomy.
Technical Context
The device integrates a single-layer AHB interconnect linking the Cortex-M0+ core, flash accelerator, and SRAM controller with dedicated analog/digital routing matrices. Its clock system combines a 24–48 MHz IMO (±2% trimmed), 32 kHz WCO, and 40 kHz ILO to support synchronous peripheral operation across Active, Sleep, and Deep Sleep modes.
Analog subsystem includes two low-power comparators operating in Deep Sleep, one 10-bit single-slope ADC, and two IDACs referenced to ±5% internal voltage reference. Digital resources comprise five 16-bit TCPWM blocks with center-aligned/PWM modes and comparator-triggered kill signals for safety-critical timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+, 48 MHz max - enables real-time sensor fusion with deterministic interrupt latency |
| Flash / SRAM | 32 KB flash with Read Accelerator, 4 KB zero-wait-state SRAM - supports firmware updates and runtime data buffering without performance penalty |
| Inductive Sensing | Up to 16 MagSense channels, <190 nm metal deflection detection - delivers sub-micron resolution for precision position sensing in harsh EMI environments |
| Capacitive Sensing | CapSense Sigma-Delta (CSD) with >5:1 SNR and water tolerance - enables reliable touch interface operation under wet or contaminated conditions |
| Power Modes | Deep Sleep at 2.5 µA digital system current - sustains long-term battery operation while retaining analog functionality |
| Communication | 2x SCBs supporting I²C/SPI/UART run-time reconfiguration - allows dynamic protocol switching without firmware reload |
| Timing Control | 5x 16-bit TCPWM blocks with comparator-based kill signal triggering - provides hardware-enforced safety shutdown for motor drive applications |
Pinout & Package
48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. All GPIOs support configurable drive strength, slew rate, and analog/digital/mixed-signal roles. Inductive sensing limited to up to 16 pins mapped to dedicated MagSense routing paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Support 1.71–5.5 V operation; VDD powers digital/analog domains with internal LDO regulation |
| XRES | External reset input | Active-low asynchronous reset with internal pull-up; initiates full system reset including flash/SRAM state clearing |
| SWDIO / SWCLK | Serial Wire Debug interface | Two-pin debug access supporting breakpoint/watchpoint debugging and flash programming in all power modes |
| P0[0]–P0[7], P1[0]–P1[7], P2[0]–P2[7], P3[0]–P3[7], P4[0]–P4[3] | Programmable GPIO bank | 36 total pins; any pin supports CapSense, analog input/output, or digital logic; up to 16 support MagSense coil drive/sense |
| WCO_IN / WCO_OUT | 32 kHz crystal oscillator terminals | Enable high-accuracy timing for RTC, watchdog timeout, or low-power periodic wake-up intervals |
Key Features
| Feature | Design Value |
|---|---|
| MagSense software calibration | Automatically compensates for PCB trace variation and component tolerance drift without host MCU intervention |
| SmartSense auto-tuning | Hardware-accelerated CapSense baseline tracking and noise rejection eliminates manual threshold tuning during development |
| Deep Sleep analog retention | Low-power comparators and IDACs remain active with 2.5 µA system current - enables continuous metal proximity monitoring on battery |
| Reconfigurable SCBs | Each Serial Communication Block can be independently assigned I²C master/slave, SPI master/slave, or UART TX/RX roles at runtime |
| TCPWM kill signal | Dedicated hardware path from comparator output to TCPWM fault input ensures <100 ns response for motor overcurrent protection |
Applications
| Industrial Proximity Switch | Water-Resistant Touch Panel |
|---|---|
Use Scenario: Detecting metal gear position in sealed hydraulic valve manifolds under oil immersion and EMI noise. IC Role / Device Role / Timing Role: MagSense channel performs inductive measurement; TCPWM generates synchronized PWM for solenoid actuation with comparator-triggered emergency cutoff. Use Value: Sub-190 nm resolution enables detection of micron-scale gear tooth misalignment; Deep Sleep mode extends battery life to >5 years in wireless valve nodes. | Use Scenario: Operator interface on food processing equipment requiring washdown-rated controls. IC Role / Device Role / Timing Role: CapSense CSD engine drives projected-capacitive overlay; IDACs provide adaptive current sourcing to maintain SNR under conductive liquid film. Use Value: >5:1 SNR and water tolerance ensure reliable button actuation even with 2 mm water layer; SmartSense eliminates recalibration after cleaning cycles. |
| Motor Drive Safety Monitor | Multi-Technology Sensor Hub |
Use Scenario: Real-time overcurrent detection in BLDC motor gate driver feedback loop. IC Role / Device Role / Timing Role: Low-power comparator monitors shunt voltage; output directly triggers TCPWM kill signal to disable PWM outputs within 100 ns. Use Value: Hardware-level fault response prevents MOSFET shoot-through; eliminates software polling latency and ensures SIL-2 compliance. | Use Scenario: Consolidating metal proximity, touch, and environmental sensing in smart building occupancy node. IC Role / Device Role / Timing Role: Single-chip integration of MagSense (metal door), CapSense (wall panel), and ADC (temperature/humidity) with shared CPU resource scheduling. Use Value: Reduces BOM count by 3 discrete sensors + MCU; unified PSoC Creator API simplifies firmware maintenance across sensing modalities. |
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 |
|---|---|---|---|
| CY8C4744AZI-S402 | Same die, identical specs, but shipped in tape-and-reel instead of tray - no functional difference | No impact on design; differs only in packaging logistics and minimum order quantity | Select S402 for automated SMT production; S403 for prototyping or low-volume hand assembly |
| CY8C4744LQI-S403 | Same functionality, but in 40-pin QFN package (6 mm × 6 mm) - 4 fewer GPIOs, no LCD segment drive capability | Suitable where board space is constrained and LCD interface not required | Choose LQI variant when footprint reduction outweighs need for full 36-GPIO count or LCD support |
Compared with CY8C4744AZI-S402 and CY8C4744LQI-S403, the CY8C4744AZI-S403 offers full 48-pin TQFP I/O availability and LCD segment drive capability - critical for HMI designs requiring direct glass interfacing and maximum sensor pin allocation.
Availability
CY8C4744AZI-S403 is available at Aetrix Electronics and suitable for industrial HMI, motor safety monitoring, and multi-modal sensor hub applications requiring stable component supply and long-term lifecycle support.
Supply support for CY8C4744AZI-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 acquired Cypress Semiconductor in 2020 and maintains full product continuity, documentation, and technical support for the PSoC portfolio.
The PSoC 4700S family was designed specifically for embedded systems requiring simultaneous high-precision inductive and capacitive sensing - targeting industrial automation, appliance HMI, and safety-critical motion control.
FAQ
Does CY8C4744AZI-S403 support USB connectivity?
No. This device lacks a USB PHY or dedicated USB controller. Communication is limited to the two reconfigurable SCBs supporting I²C, SPI, or UART protocols. For USB host/device functionality, designers must add an external USB-to-UART bridge IC or select a PSoC 4100S/4200S variant with integrated USBFS.
What is the maximum operating temperature for CY8C4744AZI-S403?
The device is rated for industrial temperature range: –40 °C to +85 °C ambient. This is confirmed in the "Device Level Specifications" section (page 14) of datasheet 002-20489 Rev. *E, with validated operation across this range under 1.71–5.5 V supply.
Can MagSense and CapSense operate simultaneously on CY8C4744AZI-S403?
Yes. The analog routing matrix and independent clock domains allow concurrent MagSense coil excitation and CapSense CSD scanning. PSoC Creator's component configurator enforces timing separation between sensing phases to prevent cross-talk, with typical interleaved cycle times under 10 ms.
Is the 32 KB flash memory field-programmable and wear-levelled?
The flash supports in-system programming via SWD interface with 100,000 write/erase cycles per sector. Wear leveling is not hardware-implemented; it must be managed in firmware using Cypress-provided Flash APIs that support sector erase, page write, and checksum validation - essential for robust over-the-air update implementations.
CY8C4744AZI-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:
- 2K 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:
CY8C4744AZI-S403 FAQ
1.How can I place an order for CY8C4744AZI-S403 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4744AZI-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 CY8C4744AZI-S403 reliable?
The price and inventory of CY8C4744AZI-S403 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4744AZI-S403 is usually 5 days.
3.What payment methods are accepted for CY8C4744AZI-S403?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4744AZI-S403 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4744AZI-S403?
CY8C4744AZI-S403 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4744AZI-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 CY8C4744AZI-S403?
For technical support, including CY8C4744AZI-S403 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4744AZI-S403 requirements.
6.How does Aetrix verify that CY8C4744AZI-S403 is sourced from the original manufacturer or authorized distributors?
All CY8C4744AZI-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 CY8C4744AZI-S403 meets industry standards.
7.What is the process for return or replacement of CY8C4744AZI-S403?
All CY8C4744AZI-S403 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4744AZI-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 CY8C4744AZI-S403 part is unused and in its original packaging.
Return procedure for CY8C4744AZI-S403:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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