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Infineon Technologies CY8C3446AXE-115
- Part No.:
- CY8C3446AXE-115
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
CY8C3446AXE-115.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,893
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Product details
Overview
CY8C3446AXE-115 from Infineon Technologies (acquired Cypress Semiconductor) is an AEC-Q100 qualified automotive-grade PSoC® 3 programmable system-on-chip integrating an 8051 CPU core, up to 64 KB flash, 8 KB SRAM, 2 KB EEPROM, 24-channel DMA, full CAN 2.0b interface (16 Rx/8 Tx buffers), USB 2.0 Full-Speed peripheral, and configurable analog/digital peripherals - deployed in engine control units, body electronics, and ADAS sensor interfaces.
For engineers reviewing the CY8C3446AXE-115 datasheet, CY8C3446AXE-115 pinout, CY8C3446AXE-115 application, or CY8C3446AXE-115 equivalent, key selection criteria include its 100-pin TQFP package, –40 °C to +125 °C extended temperature rating, integrated delta-sigma ADC (12-bit, 192 ksps, 66 dB SINAD), dual opamps (25 mA drive), and CAN+USB coexistence on a single die - critical for consolidated automotive ECU designs.
Technical Context
The CY8C3446AXE-115 implements a hardened 8051 microcontroller core operating at DC to 50 MHz with multiply/divide instructions, 512-byte flash cache, and ECC-protected flash configuration storage. Its digital subsystem centers on 24 universal digital blocks (UDBs) supporting programmable logic, timers, PWMs, CRC, PRS, LIN, and quadrature decoding via DSI routing.
Analog functionality includes a 1.024 V ±0.1% internal reference, delta-sigma ADC (8–12-bit, ×0.25–×16 PGA gain), four comparators (95 ns), two uncommitted opamps, four DACs (8-bit IDAC/VDAC), and two multifunction SC/CT blocks configurable as PGA, TIA, mixer, or sample-and-hold - all routable to any of 62 GPIOs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051 running up to 50 MHz; enables deterministic real-time control with hardware multiply/divide for motor/sensor math. |
| Memory | 64 KB flash (100K write cycles, 20 yr retention), 8 KB SRAM, 2 KB EEPROM (1M cycles); supports firmware updates and data logging in harsh environments. |
| ADC | Configurable delta-sigma ADC: 12-bit @ 192 ksps, 66 dB SINAD, ±1 LSB INL/DNL; suitable for high-accuracy thermocouple or pressure sensor acquisition. |
| CAN Interface | Full CAN 2.0b compliant with 16 Rx and 8 Tx buffers; enables robust vehicle network communication without external transceiver logic. |
| Operating Temp | –40 °C to +125 °C extended range; qualified per AEC-Q100 Grade 0 for under-hood automotive applications. |
| Package | 100-pin TQFP (14 × 14 mm, 0.5 mm pitch); supports automated SMT assembly and thermal dissipation in compact ECUs. |
| Power | 1.71–5.5 V supply; 1 µA sleep mode with RTC/LVD interrupt; enables always-on monitoring in battery-sensitive systems. |
Pinout & Package
Package: 100-pin Thin Quad Flat Package (TQFP), RoHS-compliant, lead-free, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O Power Domains | Four independent 1.2–5.5 V I/O voltage domains enable mixed-voltage interfacing (e.g., 3.3 V MCU logic + 5 V sensor analog). |
| P0[0]–P0[7], P1[0]–P1[7], etc. | General-Purpose I/O (62 total) | All GPIOs support analog routing, CapSense®, LCD drive, Schmitt-trigger inputs, and configurable drive strength (25 mA sink on SIO pins). |
| CAN_TX / CAN_RX | CAN Physical Layer Interface | Dedicated differential pair routed to internal CAN controller; requires external CAN transceiver for bus connection. |
| USBDP / USBDM | USB 2.0 Full-Speed Differential Pair | Integrated USB PHY supports 12 Mbps operation without external oscillator; TID#40770053 certified. |
| XRES | External Reset Input | Active-low asynchronous reset pin with internal pull-up; used for system-level fault recovery and watchdog coordination. |
| SWDIO / SWCLK | Serial Wire Debug Interface | 2-wire debug port supporting programming, breakpoints, and 4 KB instruction trace - essential for automotive validation. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable UDB Array (24 blocks) | Enables custom digital logic (e.g., encoder interface, protocol bridge) without FPGA; reduces BOM count and layout complexity. |
| Delta-sigma ADC with Programmable PGA | Eliminates external signal conditioning for sensors like RTDs or strain gauges - gain ×0.25 to ×16 covers µV–mV input ranges directly. |
| Integrated CAN + USB Coexistence | Allows simultaneous vehicle network communication (CAN) and service/diagnostic access (USB) on one chip - simplifies gateway and diagnostic tool designs. |
| AEC-Q100 Grade 0 Qualification | Validated for continuous operation at +125 °C ambient; meets automotive reliability requirements for powertrain and chassis modules. |
| CapSense® on Any GPIO | Supports touch-button, slider, and proximity sensing using standard I/O pins - no dedicated capacitive sensing IC required. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time monitoring of crankshaft position, throttle angle, and oxygen sensor signals in gasoline direct injection systems. IC Role / Device Role / Timing Role: Central controller executing closed-loop fuel injection timing, spark advance, and CAN-based OBD-II diagnostics. Use Value: Integrated 12-bit ADC (66 dB SINAD) and CAN 2.0b eliminate external signal conditioners and transceivers, reducing PCB area by ~35% vs discrete solutions. |
Use Scenario: Managing door lock actuators, interior lighting dimming, and window lift motors across multiple vehicle zones. IC Role / Device Role / Timing Role: Low-power system manager handling wake-on-LIN/CAN, PWM-driven LED drivers, and capacitive touch controls. Use Value: 1 µA sleep mode with RAM retention and CapSense® on GPIO enable always-on touch response while meeting ISO 16750-2 battery drain limits. |
| Advanced Driver Assistance Systems (ADAS) Sensor Hub | Automotive Diagnostic Tool Interface |
Use Scenario: Aggregating raw analog outputs from radar front-end ICs, ultrasonic parking sensors, and camera focus actuators. IC Role / Device Role / Timing Role: Signal acquisition and preprocessing node converting analog sensor data into time-stamped CAN messages for central ADAS ECU. Use Value: Simultaneous 192 ksps ADC sampling across multiple channels and 24-channel DMA offload CPU bandwidth for real-time filtering and feature extraction. |
Use Scenario: Enabling OEM service tools to reprogram ECUs, read DTCs, and perform actuator tests via standardized diagnostic protocols. IC Role / Device Role / Timing Role: USB-to-CAN/LIN protocol translator with bootloader support over UART, SPI, and USB interfaces. Use Value: On-chip USB 2.0 FS PHY (TID#40770053) and multimaster I²C allow plug-and-play connectivity without external USB transceivers or level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP S32K144 | ARM Cortex-M4F core, 160 MHz, CAN FD support, no integrated USB PHY | Better suited for CAN FD-based domain controllers; lacks USB device interface and CapSense® capability | Select when CAN FD bandwidth > 1 Mbps is required and USB is handled externally |
| Renesas RL78/F14 | 16-bit RL78 core, 32 MHz, CAN 2.0 only, no USB, lower analog integration (no delta-sigma ADC) | Targeted at cost-sensitive body electronics with minimal analog acquisition needs | Select for low-BOM-cost BCMs where USB/CapSense® are unnecessary and CAN-only comms suffice |
Compared with S32K144 and RL78/F14, CY8C3446AXE-115 uniquely combines USB 2.0 FS, CAN 2.0b, and high-resolution delta-sigma ADC in a single AEC-Q100 Grade 0 package - enabling consolidated sensor hub and diagnostic interface functions without external ICs.
Availability
CY8C3446AXE-115 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS sensor hubs, and automotive diagnostic interfaces requiring stable component supply across extended temperature and long product lifecycles.
Supply support for CY8C3446AXE-115 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 now manufactures the PSoC® family, delivering high-reliability programmable analog-digital SoCs for automotive, industrial, and IoT markets.
The CY8C34 Automotive Family targets AEC-Q100-compliant electronic control units needing mixed-signal integration, flexible firmware-defined peripherals, and robust operation from –40 °C to +125 °C.
FAQ
Does CY8C3446AXE-115 support CAN FD?
No. CY8C3446AXE-115 implements CAN 2.0b only, with 16 receive and 8 transmit buffers, compliant with ISO 11898-1:2003. It does not support CAN FD's higher data rates or extended data length. For CAN FD, consider Infineon's AURIX™ TC3xx or NXP S32K144 families.
What development tools are required for CY8C3446AXE-115?
PSoC Creator™ IDE (v3.3 or later) is mandatory for schematic-based design, component configuration, and code generation. Hardware debugging requires a KitProg2 or MiniProg3 programmer/debugger supporting SWD and JTAG. USBFS and CapSense® components require specific library versions validated for CY8C34.
Is the internal 1.024 V reference usable for precision ADC calibration?
Yes. The 1.024 V ±0.1% reference is specified across –40 °C to +85 °C and is internally routed to the delta-sigma ADC's reference input. It enables ratiometric or absolute measurements without external voltage references, reducing component count in emission control or battery monitoring systems.
Can all 62 GPIOs be used simultaneously for analog input acquisition?
No. While all 62 GPIOs support analog routing, the delta-sigma ADC has one SAR-like input multiplexer feeding a single conversion core. Up to 24 channels can be scanned sequentially via DMA-controlled channel sequencing, but true parallel acquisition requires external analog switches or additional ADCs.
CY8C3446AXE-115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 100-LQFP
- Series:
- PSOC™ 3 CY8C34xx
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 50MHz
- Connectivity:
- EBI/EMI, I2C, LINbus, SPI, UART/USART
- Peripherals:
- CapSense, DMA, POR, PWM, WDT
- Number of I/O:
- 62
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 16x12b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C3446AXE-115 FAQ
1.How can I place an order for CY8C3446AXE-115 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3446AXE-115 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 CY8C3446AXE-115 reliable?
The price and inventory of CY8C3446AXE-115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3446AXE-115 is usually 5 days.
3.What payment methods are accepted for CY8C3446AXE-115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3446AXE-115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3446AXE-115?
CY8C3446AXE-115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3446AXE-115 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 CY8C3446AXE-115?
For technical support, including CY8C3446AXE-115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3446AXE-115 requirements.
6.How does Aetrix verify that CY8C3446AXE-115 is sourced from the original manufacturer or authorized distributors?
All CY8C3446AXE-115 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 CY8C3446AXE-115 meets industry standards.
7.What is the process for return or replacement of CY8C3446AXE-115?
All CY8C3446AXE-115 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3446AXE-115, 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 CY8C3446AXE-115 part is unused and in its original packaging.
Return procedure for CY8C3446AXE-115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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