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Infineon Technologies CY8C3445AXA-108
- Part No.:
- CY8C3445AXA-108
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
CY8C3445AXA-108.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,962
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Product details
Overview
CY8C3445AXA-108 from 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, full CAN 2.0b interface (16 Rx/8 Tx buffers), and a configurable analog subsystem with 12-bit delta-sigma ADC (192 ksps, 66 dB SINAD) for precision sensor signal acquisition in engine control units.
For engineers reviewing the CY8C3445AXA-108 datasheet, CY8C3445AXA-108 pinout, CY8C3445AXA-108 application, or CY8C3445AXA-108 equivalent, this device supports real-time mixed-signal control with USB 2.0 Full-Speed peripheral, I²C multimaster, CapSense® capacitive sensing, and low-power hibernate mode (200 nA with RAM retention) - critical for automotive body electronics and ADAS sensor nodes.
Technical Context
The CY8C3445AXA-108 implements a single-cycle 8051 microcontroller core operating at up to 50 MHz with hardware multiply/divide, 24-channel DMA, and AMBA AHB bus architecture. Its digital subsystem uses 24 Universal Digital Blocks (UDBs) to implement configurable peripherals including CAN 2.0b, USB FS PHY, quadrature decoders, and LIN 2.0 - all routed flexibly to any GPIO via Digital System Interconnect (DSI).
Analog functionality centers on a temperature-stable 1.024 V ±0.1% reference, delta-sigma ADC with programmable gain (×0.25–×16), four comparators (95 ns response), two opamps (25 mA drive), and two multifunction SC/CT blocks supporting PGA, TIA, and mixer configurations - enabling direct thermocouple, current-loop, and ultrasonic transducer interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051 running up to 50 MHz with hardware multiply/divide - enables deterministic real-time control loops without instruction pipelining overhead. |
| Memory | 64 KB flash (100k write cycles, 20 yr retention), 8 KB SRAM, 2 KB EEPROM (1M cycles) - supports field firmware updates and parameter storage across vehicle lifetime. |
| ADC Performance | 12-bit delta-sigma ADC: 192 ksps sample rate, 66 dB SINAD, ±1 LSB INL/DNL - meets ASIL-B signal integrity requirements for pressure and temperature sensing. |
| CAN Interface | Full CAN 2.0b compliant with 16 Rx + 8 Tx message buffers and dedicated hardware filtering - eliminates software polling for time-critical powertrain messaging. |
| Power Modes | Hibernate mode draws 200 nA with SRAM retention; sleep mode draws 1 µA with RTC + LVD interrupt - extends battery life in always-on vehicle modules. |
| I/O Flexibility | 62 GPIOs with per-pin configuration (open-drain, pull-up/down, Schmitt trigger), any-to-any analog/digital routing, and LCD direct drive (46×16 segments) - reduces external level shifters and display drivers. |
| Operating Range | –40 °C to +125 °C ambient, 1.71–5.5 V supply - certified AEC-Q100 Grade 0 for under-hood automotive deployment. |
Pinout & Package
This device is packaged in a 100-pin TQFP (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per the CY8C34 Automotive Family Datasheet (001-57331 Rev. *G), Section 3 "Pin Descriptions".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]–P0[7] | General-purpose I/O with analog mux support | Routable to ADC inputs, DAC outputs, CapSense electrodes, or digital peripherals - enables shared pins for multi-function sensor interfaces. |
| P1[0]–P1[7] | Dedicated USBIO pins (D+, D–) | Integrated USB 2.0 Full-Speed PHY with internal termination - eliminates external USB transceiver and ESD protection components. |
| P2[0]–P2[7] | CAN TX/RX differential pair + CAN control | Hardware-accelerated CAN bus interface with automatic retransmission and error handling - offloads CPU during high-traffic network operation. |
| VDDA/VSSA | Analog power/ground | Independent 1.71–5.5 V analog supply domain - isolates noise-sensitive ADC and opamp circuits from digital switching transients. |
| XIN/XOUT | Crystal oscillator input/output | Supports 4–25 MHz crystal for PPM-accurate timing - required for CAN bit timing compliance and USB frame synchronization. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable UDB array (24 blocks) | Enables hardware implementation of custom logic (e.g., CRC, PRS, quadrature decoding) without CPU intervention - reduces latency and firmware complexity. |
| Delta-sigma ADC with programmable gain | Gain range ×0.25 to ×16 allows direct connection of mV-range sensors (thermocouples, strain gauges) without external amplifiers - cuts BOM cost and board space. |
| CapSense® on any GPIO | Self-capacitance and mutual-capacitance sensing supported on all 62 GPIOs - enables flexible touchpad, slider, and proximity designs without dedicated controller IC. |
| USB 2.0 Full-Speed peripheral | TID#40770053 certified with internal oscillator - eliminates external crystal and simplifies USB compliance testing for diagnostic port implementations. |
| Low-power hibernate mode | 200 nA quiescent current with full SRAM retention - sustains configuration and state during vehicle ignition-off periods without backup battery. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Real-time acquisition of crankshaft position, throttle angle, and manifold pressure signals under harsh under-hood conditions. IC Role / Device Role / Timing Role: Mixed-signal controller executing closed-loop fuel injection timing while managing CAN-based actuator commands and sensor diagnostics. Use Value: Integrated 12-bit ADC with ±1 LSB INL and –40 °C to +125 °C operation ensures accurate combustion timing across thermal extremes without calibration drift. |
Use Scenario: Centralized management of door locks, window lifts, lighting, and interior touch controls in modern vehicle cabins. IC Role / Device Role / Timing Role: System-on-chip host coordinating LIN slave networks, CapSense® buttons, PWM-driven LED dimming, and CAN gateway functions. Use Value: 62 GPIOs with per-pin analog/digital routing and integrated CapSense eliminate discrete touch controllers and reduce interconnect wiring harness complexity. |
| Advanced Driver Assistance Systems (ADAS) Sensor Node | Electric Power Steering (EPS) Motor Controller |
|
Use Scenario: Signal conditioning and preprocessing for ultrasonic parking sensors operating at 40–70 kHz with echo amplitude and time-of-flight measurement. IC Role / Device Role / Timing Role: Analog front-end processor digitizing raw transducer outputs using high-bandwidth delta-sigma ADC and performing initial filtering in UDB logic. Use Value: 192 ksps ADC sampling and 95 ns comparator response enable precise echo detection down to 5 cm resolution with sub-microsecond timing accuracy. |
Use Scenario: Closed-loop torque control of brushless DC steering motors using Hall-effect rotor position feedback and phase current sensing. IC Role / Device Role / Timing Role: Real-time motor controller executing FOC algorithms with synchronized PWM generation, current ADC sampling, and CAN status reporting. Use Value: Hardware PWM blocks with dead-time insertion and 24-channel DMA enable precise 20 kHz motor switching synchronized to ADC conversion triggers - minimizing torque ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP S32K144 | ARM Cortex-M4F core, 16-bit SAR ADC (1.2 Msps), no integrated CapSense or USB PHY | Targets higher-performance safety-critical applications requiring ASIL-D decomposition; lacks on-chip capacitive sensing and USB device capability | Select when functional safety certification (ISO 26262) and floating-point math acceleration are mandatory over analog integration density. |
| Infineon XMC4500 | ARM Cortex-M4 core, 12-bit SAR ADC (2.5 Msps), no CAN FD or CapSense, includes Ethernet MAC | Focused on industrial motor control with EtherCAT support; missing automotive-specific features like AEC-Q100 Grade 0 and hibernate mode | Select for gate driver co-location and industrial fieldbus integration where automotive qualification is not required. |
Compared with NXP S32K144 and Infineon XMC4500, the CY8C3445AXA-108 delivers superior analog integration density (delta-sigma ADC + opamps + SC/CT blocks), lower hibernate current (200 nA vs >1 µA), and built-in CapSense/USB - reducing component count in cost-sensitive automotive body electronics.
Availability
CY8C3445AXA-108 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS sensor nodes, and electric power steering systems requiring stable component supply across extended automotive lifecycles.
Supply support for CY8C3445AXA-108 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
Cypress Semiconductor (now part of Infineon Technologies) designs high-integration programmable mixed-signal ICs for automotive, industrial, and consumer applications, with emphasis on configurability, low-power operation, and system-level integration.
The CY8C34 Automotive Family targets AEC-Q100-compliant applications demanding real-time analog signal acquisition, CAN/USB connectivity, and field-upgradable firmware - especially in body electronics and sensor fusion nodes.
FAQ
What development tools are required to program and debug the CY8C3445AXA-108?
Programming and debugging require PSoC Creator™ IDE (v3.3 or later), a compatible programmer/debugger such as KitProg or MiniProg3, and a target board with SWD or JTAG interface. The device supports JTAG (4-wire), SWD (2-wire), and Single Wire Viewer (SWV) for real-time trace. Bootloader programming is also supported over I²C, SPI, UART, or USB interfaces without external hardware.
Does the CY8C3445AXA-108 support CAN FD or only classical CAN 2.0b?
The CY8C3445AXA-108 implements only classical CAN 2.0b (up to 1 Mbps), not CAN FD. It provides 16 receive and 8 transmit message buffers with hardware acceptance filtering and automatic retransmission. CAN FD support requires newer PSoC 4 or PSoC 6 devices with updated controller IP.
Can the internal 1.024 V reference be used for external circuitry?
No - the 1.024 V ±0.1% internal reference is仅供内部 ADC, DAC, and comparator use and is not accessible on any pin. External precision references must be supplied separately if needed for external analog circuitry, as the device does not provide a buffered reference output.
Is the USB interface fully self-contained, including the physical layer?
Yes - the CY8C3445AXA-108 integrates a full USB 2.0 Full-Speed (12 Mbps) PHY with internal termination resistors and ESD protection on the D+ and D– pins (P1[0]/P1[1]). No external transceiver, resistors, or crystals are required for basic USB device operation, though an external 24 MHz crystal may improve USB timing margin.
CY8C3445AXA-108 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, USB
- Peripherals:
- CapSense, DMA, LCD, POR, PWM, WDT
- Number of I/O:
- 62
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 4K 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C3445AXA-108 FAQ
1.How can I place an order for CY8C3445AXA-108 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3445AXA-108 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 CY8C3445AXA-108 reliable?
The price and inventory of CY8C3445AXA-108 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3445AXA-108 is usually 5 days.
3.What payment methods are accepted for CY8C3445AXA-108?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3445AXA-108 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3445AXA-108?
CY8C3445AXA-108 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3445AXA-108 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 CY8C3445AXA-108?
For technical support, including CY8C3445AXA-108 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3445AXA-108 requirements.
6.How does Aetrix verify that CY8C3445AXA-108 is sourced from the original manufacturer or authorized distributors?
All CY8C3445AXA-108 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 CY8C3445AXA-108 meets industry standards.
7.What is the process for return or replacement of CY8C3445AXA-108?
All CY8C3445AXA-108 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3445AXA-108, 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 CY8C3445AXA-108 part is unused and in its original packaging.
Return procedure for CY8C3445AXA-108:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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