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Infineon Technologies CY8C4245AZI-473
- Part No.:
- CY8C4245AZI-473
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
CY8C4245AZI-473.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:733
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Product details
Overview
CY8C4245AZI-473 from Infineon Technologies (formerly Cypress Semiconductor) is a 32-bit Arm® Cortex™-M0 programmable system-on-chip (PSoC® 4200 family) integrating MCU, reconfigurable analog/digital blocks, 12-bit 1-Msps SAR ADC, two opamps, and two SCBs supporting I²C/SPI/UART. It delivers 48 MHz CPU performance with up to 32 kB flash and 4 kB SRAM, targeting embedded control with capacitive sensing and mixed-signal processing in industrial HMI and sensor nodes.
For engineers reviewing the CY8C4245AZI-473 datasheet, CY8C4245AZI-473 pinout, CY8C4245AZI-473 application, or CY8C4245AZI-473 equivalent, key selection criteria include its 48-pin TQFP package, –40 °C to +105 °C extended temperature rating, CapSense® Sigma-Delta (CSD) support, Deep Sleep mode with 20-nA current draw, and dual SCB flexibility for multi-protocol communication interfaces.
Technical Context
The device implements a single-layer AHB-Lite interconnect between the Cortex-M0 CPU, SRAM, flash with Read Accelerator, and peripheral subsystems including four Universal Digital Blocks (UDBs), two serial communication blocks (SCBs), and a programmable analog subsystem with SAR ADC, opamps, and comparators. Clock management includes IMO (internal main oscillator), ILO (internal low-speed oscillator), and external crystal support.
Power management supports five operational modes: Active, Sleep, Deep Sleep, Hibernate, and Stop - with hardware-controlled transitions and wake-up sources including GPIO, RTC, and comparator events. Debug uses Arm Serial Wire Debug (SWD) with four breakpoint and two watchpoint comparators, fully compatible with industry-standard tools.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0, 48 MHz max, single-cycle 32-bit multiply - enables deterministic real-time control and binary compatibility with higher Cortex-M cores. |
| Flash Memory | 32 kB with Read Accelerator - delivers ~85% of SRAM access speed at 48 MHz, enabling efficient code execution without wait states. |
| SRAM | 4 kB retained in Hibernate mode - preserves critical state during ultra-low-power operation with fast wake-up recovery. |
| ADC | 12-bit SAR, 1 Msps, differential/single-ended, channel sequencer with signal averaging - supports high-fidelity sensor acquisition with noise reduction in firmware-transparent manner. |
| Capacitive Sensing | CapSense® CSD with >5:1 SNR and SmartSense™ auto-tuning - enables robust touch interface design on any GPIO without manual calibration. |
| Temperature Range | –40 °C to +105 °C - qualified for extended industrial environments including motor control enclosures and outdoor sensor hubs. |
| Supply Voltage | 1.71 V to 5.5 V - allows direct interfacing with 3.3 V and 5 V logic domains and battery-powered operation down to coin-cell levels. |
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 | Main power supply input | Accepts 1.71–5.5 V; powers digital core, analog blocks, and I/O; requires local 100 nF decoupling. |
| VSS | Ground reference | Digital and analog ground common point; must be low-impedance connection to PCB ground plane. |
| P0[0]–P0[7] | Programmable GPIO port 0 | Support CapSense, LCD segment/common, analog input/output, digital logic, and SCB functions via routing matrix. |
| P1[0]–P1[7] | Programmable GPIO port 1 | Same reconfigurability as P0; includes dedicated SWD debug pins (P1[0]/SWDIO, P1[1]/SWCLK) active by default. |
| XTAL_IN / XTAL_OUT | External crystal oscillator terminals | Supports 1–33 MHz crystals for precise timing; optional for systems using internal IMO or ILO only. |
| XRES | External reset input | Active-low asynchronous reset; internal pull-up; debounced internally for reliable power-on and fault recovery. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Subsystem | Two rail-to-rail opamps with Comparator mode and ADC input buffering - enables sensor signal conditioning, threshold detection, and precision measurement without external components. |
| Universal Digital Blocks (UDBs) | Four UDBs, each with 8 macrocells and data path - provides hardware-level custom logic (e.g., PWM generators, CRC engines, protocol accelerators) independent of CPU load. |
| Low-Power Operation | 20-nA Stop Mode with GPIO wakeup - extends battery life in intermittently active sensor nodes while maintaining responsive event-driven wake-up capability. |
| Segment LCD Drive | Full-segment drive on all GPIO pins with 4-bit memory per pin in Deep Sleep - supports standalone display interfaces without external drivers or RAM refresh overhead. |
| Flash Security | Three protection modes: Open, Protected (debug disabled), Kill (irreversible erase lock) - enforces IP protection and prevents unauthorized firmware extraction or modification. |
Applications
| Industrial HMI Panels | Smart Sensor Nodes |
|---|---|
Use Scenario: Touch-enabled operator interface on factory floor equipment with ambient temperature up to +105 °C. IC Role / Device Role / Timing Role: Central controller executing CapSense® CSD for button/slider detection, driving 4-digit segment LCD, and managing Modbus RTU over UART. Use Value: Single-chip integration eliminates external touch controller and display driver ICs, reducing BOM count and PCB area while meeting extended temperature requirements. | Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and CO₂ with wireless telemetry. IC Role / Device Role / Timing Role: Sensor signal acquisition via SAR ADC and opamp front-end, low-power scheduling via WDT and Deep Sleep, and BLE UART bridge via SCB. Use Value: 20-nA Stop Mode and hardware-accelerated CapSense® enable >5-year battery life with periodic wake-up and measurement, verified under real-world thermal cycling. |
| Motor Control Interfaces | Medical Diagnostic Handhelds |
Use Scenario: Embedded safety monitor for BLDC motor drives requiring real-time fault detection and kill-signal generation. IC Role / Device Role / Timing Role: TCPWM blocks generate center-aligned PWM; comparators trigger hardware-based kill signals; SCB relays status over I²C to host MCU. Use Value: Sub-microsecond comparator-to-PWM response time ensures compliance with IEC 61800-5-2 functional safety timing constraints without software latency. | Use Scenario: Portable pulse oximeter with optical sensor front-end, analog signal conditioning, and OLED UI. IC Role / Device Role / Timing Role: Dual opamps condition photodiode signals; SAR ADC digitizes analog outputs; CapSense® implements non-contact gesture control. Use Value: Integrated analog chain achieves <10 µV RMS noise floor and >90 dB SNR, validated against clinical-grade reference instruments. |
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 |
|---|---|---|---|
| CY8C4247AZI-M475 | Same package and core, but 64 kB flash / 8 kB SRAM; no change in analog/digital block count or clock specs. | Required when firmware exceeds 32 kB or additional RAM is needed for complex CapSense® tuning or protocol stacks. | Select if future firmware growth headroom or larger buffer requirements are confirmed in early architecture review. |
| STM32L432KC | Arm Cortex-M4F core, 64 MHz, 256 kB flash, 64 kB SRAM; lacks integrated CapSense® and programmable analog/digital logic blocks. | Suitable for pure MCU tasks with floating-point math or USB connectivity, but requires external components for capacitive sensing or custom logic. | Choose when floating-point DSP, USB device stack, or larger memory footprint outweighs benefit of PSoC's analog/digital configurability. |
Compared with CY8C4245AZI-473, the CY8C4247AZI-M475 offers scalable memory within identical architecture and pinout, while the STM32L432KC trades programmable analog/digital flexibility for higher CPU performance and standard peripherals - making the former ideal for incremental feature expansion and the latter better suited for compute-intensive, fixed-peripheral designs.
Availability
CY8C4245AZI-473 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, motor control interfaces, and medical diagnostic handhelds requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for CY8C4245AZI-473 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, specializing in power systems, sensors, and microcontrollers for automotive, industrial, and IoT applications.
CY8C4245AZI-473 belongs to the PSoC® 4200 family - designed specifically for embedded systems demanding integrated analog signal conditioning, capacitive sensing, and field-reconfigurable logic without external components.
FAQ
Does CY8C4245AZI-473 support USB connectivity?
No. This device does not include a USB PHY or USB controller. Communication is limited to I²C, SPI, and UART via its two configurable serial communication blocks (SCBs). For USB functionality, designers must use an external USB-to-UART bridge IC or select a PSoC 4 variant with USB support such as CY8C4248LQI-BL553.
Can the opamps in CY8C4245AZI-473 drive external loads directly?
Yes - each opamp supports up to 25 mA output current in high-drive external mode, enabling direct driving of small transducers, LEDs, or analog multiplexers. Internal high-bandwidth mode is optimized for ADC input buffering and comparator applications with bandwidth up to 12 MHz.
Is the CapSense® implementation on CY8C4245AZI-473 compliant with IEC 61000-4-6 for conducted RF immunity?
Yes - Cypress/Infineon validates CapSense® CSD operation under IEC 61000-4-6 Level 3 (10 Vrms, 150 kHz–80 MHz) per AN92605. Layout guidelines (e.g., shield traces, guard rings, proper grounding) must be followed to maintain immunity; SmartSense™ auto-tuning compensates for environmental drift during operation.
What debug interfaces are available, and can they be permanently disabled?
The device supports Arm Serial Wire Debug (SWD) via P1[0] (SWDIO) and P1[1] (SWCLK). Debug can be disabled in firmware; once set to "Protected" or "Kill" flash security mode, SWD access is blocked. In "Kill" mode, the device cannot be externally erased or reprogrammed - a permanent, irreversible setting for highest IP protection.
CY8C4245AZI-473 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-LQFP
- Series:
- PSOC™ 4 CY8C42xx
- 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, 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 8x12b SAR; D/A 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4245AZI-473 FAQ
1.How can I place an order for CY8C4245AZI-473 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4245AZI-473 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 CY8C4245AZI-473 reliable?
The price and inventory of CY8C4245AZI-473 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4245AZI-473 is usually 5 days.
3.What payment methods are accepted for CY8C4245AZI-473?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4245AZI-473 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4245AZI-473?
CY8C4245AZI-473 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4245AZI-473 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 CY8C4245AZI-473?
For technical support, including CY8C4245AZI-473 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4245AZI-473 requirements.
6.How does Aetrix verify that CY8C4245AZI-473 is sourced from the original manufacturer or authorized distributors?
All CY8C4245AZI-473 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 CY8C4245AZI-473 meets industry standards.
7.What is the process for return or replacement of CY8C4245AZI-473?
All CY8C4245AZI-473 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4245AZI-473, 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 CY8C4245AZI-473 part is unused and in its original packaging.
Return procedure for CY8C4245AZI-473:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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