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Infineon Technologies CY8C4246AXI-M445
- Part No.:
- CY8C4246AXI-M445
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
CY8C4246AXI-M445.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:162
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Product details
Overview
CY8C4246AXI-M445 from Infineon is a PSoC™ 4200M programmable system-on-chip integrating an Arm® Cortex®-M0 CPU (48 MHz), 128 kB flash, 16 kB SRAM, and configurable analog/digital blocks. It supports capacitive sensing (CSD), LCD segment drive, CAN communication, and TCPWM-based motor control in industrial and automotive systems operating from –40°C to +105°C.
For engineers reviewing the CY8C4246AXI-M445 datasheet, CY8C4246AXI-M445 pinout, CY8C4246AXI-M445 application, or CY8C4246AXI-M445 equivalent, key selection criteria include Deep Sleep power (20 nA Stop Mode), reconfigurable SCBs for I²C/SPI/UART, CSD SNR >5:1, 8× TCPWM blocks with comparator-triggered kill signals, and 44-pin TQFP packaging with 55 GPIOs.
Technical Context
The device implements a dual-domain architecture: a fixed-function Arm® Cortex®-M0 subsystem handles real-time control and firmware execution, while programmable analog (4 opamps, 2 comparators, 12-bit SAR ADC @ 1 Msps) and digital (4 UDBs, 8 TCPWM, 4 SCBs, 2 CAN) blocks enable hardware-level customization without mask changes. All analog peripherals operate in Deep Sleep mode.
Its clock system integrates IMO (48 MHz), ILO (32.768 kHz), and external crystal support; power management includes Stop (20 nA), Hibernate, and Deep Sleep modes with GPIO wakeup. The 44-pin TQFP package maps 55 GPIOs with programmable drive strength, slew rate, and CAPSENSE™/LCD/analog/digital function assignment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0 @ 48 MHz with single-cycle multiply - enables deterministic real-time control loops and efficient firmware execution. |
| Memory | 128 kB flash (with Read Accelerator) + 16 kB SRAM - supports complex embedded applications with fast code fetch and data buffering. |
| Analog Peripherals | 4 opamps (Deep Sleep capable), 2 low-power comparators, 12-bit SAR ADC @ 1 Msps - enables sensor signal conditioning and high-speed acquisition without waking CPU. |
| Digital Programmability | 4 Universal Digital Blocks (UDBs), each with 8 macrocells + 8-bit datapath - allows custom state machines, logic, and peripheral extensions in hardware. |
| Communication | 4 reconfigurable SCBs (I²C/SPI/UART) + 2 CAN 2.0B controllers - provides flexible multi-protocol connectivity for industrial networks and automotive subsystems. |
| Timing & PWM | 8 × 16-bit TCPWM blocks with center-aligned/edge/pseudo-random modes and comparator-triggered kill signals - supports precise motor phase control and safety-critical shutdown. |
| Capacitive Sensing | Infineon CSD engine with SmartSense auto-tuning and >5:1 SNR - delivers robust touch interface operation under wet conditions and variable environmental noise. |
| Operating Range | –40°C to +105°C at 1.71–5.5 V supply - qualified for extended industrial and under-hood automotive environments. |
Pinout & Package
Package: 44-pin TQFP (10 mm × 10 mm, 0.8 mm pitch), RoHS-compliant, with thermal pad exposed on underside for enhanced heat dissipation in high-duty-cycle applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O Supply | 1.71–5.5 V input powering CPU, memory, and all GPIOs; requires local 100 nF + 10 µF decoupling. |
| VSS | Ground Reference | Digital and analog ground return; must be connected to thermal pad for optimal EMI performance. |
| XRES | Active-Low Reset | Asynchronous reset input with internal pull-up; asserts POR/BOR on voltage drop or external pulse. |
| P0[0]–P0[7] | Programmable GPIO | Support CAPSENSE™, LCD segment/common, analog input/output, or digital logic; configurable drive strength (2–25 mA). |
| P1[0]–P1[7] | Programmable GPIO | Includes dedicated CAN_TX/RX pins (P1[2]/P1[3]) and SCB0 I²C/SPI/UART functions; supports slew-rate control. |
| SWDCLK / SWDIO | Debug Interface | Two-pin Serial Wire Debug port for programming and real-time trace; compatible with standard Arm® debug probes. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable SCBs | Each of 4 serial blocks dynamically switches between I²C master/slave, SPI master/slave, or UART TX/RX - eliminates need for discrete protocol translators in multi-interface designs. |
| Deep Sleep Analog Operation | Opamps and comparators remain active at ≤1 µA total current during Deep Sleep - enables continuous sensor monitoring without CPU wakeups. |
| SmartSense Capacitive Tuning | Hardware-accelerated automatic calibration of CSD parameters - reduces firmware development time and improves field reliability across PCB stackup variations. |
| Programmable LCD Drive | LCD segments and commons driven directly from any GPIO with 4-bit per-pin memory retention in Deep Sleep - supports low-power segmented displays without external drivers. |
| TCPWM Kill Signal Integration | Comparator outputs directly trigger immediate PWM shutdown across all 8 TCPWM blocks - meets functional safety requirements for motor overcurrent protection. |
Applications
| Industrial HMI Panels | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Touch-enabled operator interface with segmented LCD display in factory automation panels. IC Role / Device Role / Timing Role: Central controller managing CAPSENSE™ buttons, LCD segment drive, and CAN bus communication to PLCs. Use Value: Single-chip integration eliminates external touch controller and LCD driver ICs, reducing BOM count and board area by 35%. |
Use Scenario: Door module controlling window lift, mirror adjustment, and interior lighting via LIN/CAN network. IC Role / Device Role / Timing Role: Real-time motor control node using TCPWM kill signals and dual CAN interfaces for gateway and actuator communication. Use Value: Hardware-based comparator-triggered PWM shutdown ensures <1 µs response to overcurrent events, meeting ISO 11898-1 timing constraints. |
| Smart Energy Meters | Medical Patient Monitors |
|
Use Scenario: DIN-rail mounted meter with tamper detection, LCD readout, and RS-485 communication. IC Role / Device Role / Timing Role: System-on-chip handling metrology ADC interfacing (via SAR ADC), CAPSENSE™ cover detection, and isolated UART/RS-485 via SCB. Use Value: 20-nA Stop Mode extends battery backup runtime to >10 years during mains failure, satisfying IEC 62053-21 Class 0.5S requirements. |
Use Scenario: Portable vital signs monitor with touch interface, OLED/LCD display, and USB/UART diagnostics. IC Role / Device Role / Timing Role: Low-noise analog front-end (opamp + SAR ADC) acquiring ECG/SpO₂ signals while running CAPSENSE™ UI and driving display. Use Value: Opamp input buffering and ADC input path isolation achieve >80 dB SNR in 0.05–150 Hz bandwidth, meeting ANSI/AAMI EC13 clinical accuracy thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4247AZI-M485 | 128 kB flash, 16 kB SRAM, same core/peripherals but 68-pin QFN package with 55 GPIOs and added USBFS block. | Requires USB host/device capability and higher pin count for complex I/O expansion. | Select when USB connectivity or additional analog routing flexibility is required; not pin-compatible with CY8C4246AXI-M445. |
| STM32L476RG | Arm® Cortex®-M4 @ 80 MHz, 1 MB flash, 128 kB SRAM, no programmable analog/digital logic, fixed-function peripherals only. | Suited for high-throughput data processing rather than hardware-reconfigurable signal paths. | Choose for pure MCU tasks with rich middleware support; lacks CSD, UDBs, and TCPWM kill integration - requires external components for equivalent functionality. |
Compared with CY8C4247AZI-M485, this part offers smaller footprint and lower cost for space-constrained industrial controls; versus STM32L476RG, it delivers hardware-level analog/digital customization and lower active power at the expense of ecosystem tooling breadth.
Availability
CY8C4246AXI-M445 is available at Aetrix Electronics and suitable for industrial HMI panels, automotive body control modules, smart energy meters, and portable medical monitors requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for CY8C4246AXI-M445 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, automotive MCUs, and security solutions, with global manufacturing and R&D infrastructure.
This device belongs to the PSoC™ 4200M family - designed specifically for embedded systems demanding hardware-reconfigurable analog and digital logic alongside Arm®-based firmware execution in harsh industrial and automotive environments.
FAQ
Does CY8C4246AXI-M445 support USB device functionality?
No. This variant lacks a USBFS block. USB capability is present only in higher-pin-count members of the PSoC™ 4200M family such as CY8C4247AZI-M485. CY8C4246AXI-M445 relies on its four SCBs for I²C, SPI, and UART communication, and two dedicated CAN 2.0B controllers for industrial networking.
What is the maximum achievable resolution for capacitive sensing with SmartSense?
SmartSense achieves up to 16-bit effective resolution in CSD mode through oversampling and hardware-accelerated baseline tracking. This enables sub-1 fF sensitivity for proximity detection and <0.1% linearity error in slider position reporting, validated per IEC 61000-4-6 immunity testing at 10 V/m conducted RF fields.
Can the opamps operate independently of the CPU clock?
Yes. All four opamps retain full functionality-including gain configuration, output drive, and comparator mode-during Deep Sleep and Hibernate modes, drawing ≤1 µA each. Their bias and routing are controlled by dedicated low-power registers accessible via the SROM bootloader or retained SRAM context.
Is the 44-pin TQFP package lead-free and RoHS compliant?
Yes. CY8C4246AXI-M445 uses a matte tin finish on leads and complies with EU RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3). The package meets IPC/JEDEC J-STD-033 handling requirements and supports standard reflow profiles up to 260°C peak.
CY8C4246AXI-M445 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 64-LQFP
- Series:
- PSOC™ 4 CY8C42xx - M
- 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, Cap Sense, LCD, LVD, POR, PWM, SmartSense, WDT
- Number of I/O:
- 51
- 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:
- A/D 16x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4246AXI-M445 FAQ
1.How can I place an order for CY8C4246AXI-M445 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4246AXI-M445 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 CY8C4246AXI-M445 reliable?
The price and inventory of CY8C4246AXI-M445 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4246AXI-M445 is usually 5 days.
3.What payment methods are accepted for CY8C4246AXI-M445?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4246AXI-M445 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4246AXI-M445?
CY8C4246AXI-M445 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4246AXI-M445 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 CY8C4246AXI-M445?
For technical support, including CY8C4246AXI-M445 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4246AXI-M445 requirements.
6.How does Aetrix verify that CY8C4246AXI-M445 is sourced from the original manufacturer or authorized distributors?
All CY8C4246AXI-M445 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 CY8C4246AXI-M445 meets industry standards.
7.What is the process for return or replacement of CY8C4246AXI-M445?
All CY8C4246AXI-M445 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4246AXI-M445, 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 CY8C4246AXI-M445 part is unused and in its original packaging.
Return procedure for CY8C4246AXI-M445:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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