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Infineon Technologies CY8C3446AXA-105
- Part No.:
- CY8C3446AXA-105
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
CY8C3446AXA-105.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 100TQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
CY8C3446AXA-105 from Infineon Technologies (acquired Cypress Semiconductor) is an AEC-Q100 qualified automotive-grade PSoC® 3 programmable system-on-chip integrating an 8051 CPU core, 64 KB flash, 8 KB SRAM, 2 KB EEPROM, 24-channel DMA, full CAN 2.0b interface, USB 2.0 Full-Speed peripheral, and configurable analog/digital peripherals. It operates from 1.71 V to 5.5 V, supports –40 °C to +125 °C extended temperature range, and delivers up to 50 MHz performance with internal PLL. Used in automotive body control modules for sensor fusion and actuator control.
For engineers reviewing the CY8C3446AXA-105 datasheet, CY8C3446AXA-105 pinout, CY8C3446AXA-105 application, or CY8C3446AXA-105 equivalent, key selection criteria include AEC-Q100 compliance, integrated CAN+USB dual-interface capability, delta-sigma ADC with 12-bit/192 ksps performance, 24 UDBs for custom logic, and hibernate mode current of 200 nA - all confirmed in the official 001-57331 Rev. *G datasheet.
Technical Context
The CY8C3446AXA-105 implements a single-cycle 8051 CPU core with multiply/divide instructions, 512-byte flash cache, and ECC-protected flash configuration storage. Its digital subsystem centers on 24 universal digital blocks (UDBs), each combining PLD logic and state machines, routed via Digital System Interconnect (DSI) to any GPIO.
Analog functionality includes a 12-bit delta-sigma ADC (192 ksps, 66 dB SINAD, ±1 LSB INL/DNL), four comparators (95 ns response), two opamps (25 mA drive), and two multifunction SC/CT blocks configurable as PGA, TIA, or mixer - all referenced to a 1.024 V ±0.1% internal voltage reference across –40 °C to +85 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051 with multiply/divide instructions - enables deterministic real-time control loops without software emulation overhead. |
| Flash Memory | 64 KB, 100,000 write cycles, 20-year retention - supports field firmware updates and secure bootloader storage in automotive ECUs. |
| ADC Performance | 12-bit delta-sigma, 192 ksps, 66 dB SINAD, ±1 LSB INL/DNL - meets precision requirements for thermocouple, pressure, and current sensing in ASIL-B systems. |
| CAN Interface | Full CAN 2.0b compliant with 16 Rx / 8 Tx buffers - enables robust vehicle network communication without external transceiver logic. |
| Power Modes | Hibernate mode draws 200 nA with RAM retention; sleep mode draws 1 µA with RTC + LVD interrupt - extends battery life in always-on automotive modules. |
| Operating Temp | –40 °C to +125 °C extended range - certified for under-hood applications including engine bay and transmission control units. |
| I/O Flexibility | 62 GPIOs with full analog/digital routing, CapSense® support, LCD direct drive (46×16), and 1.2–5.5 V I/O domains - simplifies mixed-signal board design and reduces external level-shifters. |
Pinout & Package
The CY8C3446AXA-105 is housed in a 100-pin TQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad, rated for automotive extended temperature operation and AEC-Q100 Grade 1 qualification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O Power Domains | Four independent 1.2–5.5 V supply rails enabling mixed-voltage interfacing (e.g., 3.3 V MCU logic + 5 V sensor inputs). |
| P0[0]–P7[7] | General-Purpose I/O | All 62 GPIO pins support analog input routing, CapSense®, LCD segment drive, and configurable pull-up/pull-down/schmitt-trigger behavior. |
| CAN_TX / CAN_RX | CAN Physical Layer Interface | Dedicated differential pair routed to internal CAN controller - requires external CAN transceiver (e.g., TJA1042) for bus connection. |
| USBDP / USBDM | USB 2.0 Full-Speed PHY | Integrated USB transceiver supports 12 Mbps operation without external PHY; requires 1.5 kΩ pull-up on USBDP for device enumeration. |
| XRES | External Reset Input | Active-low asynchronous reset pin with internal pull-up; debounced by hardware to tolerate noisy automotive environments. |
| SWDIO / SWCLK | Serial Wire Debug Interface | 2-wire JTAG alternative enabling debug, programming, and trace via Cypress/Infineon KitProg or MiniProg3 programmers. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Analog Subsystem | Delta-sigma ADC, 4 comparators, 2 opamps, and 2 SC/CT blocks (PGA/TIA/mixer) - eliminates need for discrete signal-conditioning circuitry in sensor front-ends. |
| Universal Digital Blocks (UDBs) | 24 UDBs with PLD + state machine per block - enables implementation of custom protocols (e.g., LIN, SENT, custom SPI variants) without FPGA or ASIC. |
| CapSense® Integration | Capacitive touch sensing supported on all GPIOs with built-in IDACs and noise immunity algorithms - enables seamless integration of touch controls in automotive HMI panels. |
| Automotive Clocking | Internal PLL (up to 50 MHz), 32.768 kHz RTC oscillator, and low-power 1/33/100 kHz ILO - satisfies timing accuracy and low-power wake-up requirements per ISO 16750-4. |
| Security & Reliability | Flash security bits, EEPROM write endurance (1 M cycles), and ECC-protected configuration storage - ensures firmware integrity and long-term data retention in safety-critical modules. |
Applications
| Automotive Body Control Module (BCM) | Advanced Driver Assistance Systems (ADAS) Sensor Hub |
|---|---|
|
Use Scenario: Centralized control of door locks, window lifts, lighting, and mirror adjustment using analog sensor feedback and PWM-driven actuators. IC Role / Device Role / Timing Role: Main microcontroller executing real-time control tasks, managing CAN bus communication with gateway ECU, and performing analog acquisition from potentiometers and current sensors. Use Value: Integrated 12-bit ADC and 24-channel PWM eliminate external ADCs and motor drivers, reducing BOM count by ≥7 components per module. |
Use Scenario: Aggregation and preprocessing of ultrasonic parking sensor signals, ambient light, and rain sensor data before forwarding to ADAS domain controller. IC Role / Device Role / Timing Role: Signal acquisition node with synchronized delta-sigma sampling across 8+ channels, real-time filtering via UDB-based FIR logic, and CAN message formatting. Use Value: 192 ksps ADC sample rate and 95 ns comparator response enable precise time-of-flight calculation for <5 cm object detection resolution. |
| Automotive HVAC Control Unit | Electric Power Steering (EPS) Motor Monitor |
|
Use Scenario: Closed-loop climate control using NTC thermistors, humidity sensors, and stepper motor drivers for air flap positioning. IC Role / Device Role / Timing Role: Mixed-signal controller acquiring analog temperature/humidity data, generating multi-phase stepper waveforms, and communicating status over I2C to display unit. Use Value: On-chip opamps and SC/CT blocks condition thermistor signals directly, avoiding external instrumentation amplifiers and trimming resistors. |
Use Scenario: Real-time monitoring of motor phase currents and rotor position in EPS systems using shunt-based current sensing and Hall-effect feedback. IC Role / Device Role / Timing Role: High-speed analog acquisition node with simultaneous 12-bit ADC sampling on 3 channels, fast comparator-based overcurrent detection, and CAN fault reporting. Use Value: 200 nA hibernate current allows continuous monitoring during vehicle sleep mode while meeting ISO 16750-2 quiescent current limits (<100 µA typical). |
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 |
|---|---|---|---|
| NXP S32K144 | ARM Cortex-M4F core, no integrated delta-sigma ADC, requires external CAN transceiver and external ADC for high-precision sensing. | Better suited for higher-performance motor control with FPU and Ethernet; lacks CapSense® and LCD drive capability. | Select when migrating to AUTOSAR-compliant RTOS environments requiring Cortex-M4 toolchains and functional safety certification (ISO 26262 ASIL-B). |
| Renesas RL78/F14 | 16-bit RL78 core, integrated 10-bit SAR ADC (max 1 Msps), no USB or CapSense®, lower UDB-equivalent logic density. | Optimized for cost-sensitive body electronics with basic PWM and LIN; lacks CAN+USB dual-interface integration. | Select for entry-level BCM designs where USB connectivity and capacitive touch are not required, and BOM cost is primary constraint. |
Compared with S32K144 and RL78/F14, the CY8C3446AXA-105 uniquely combines automotive-grade CAN+USB dual interface, 12-bit delta-sigma ADC with 66 dB SINAD, and CapSense® on a single die - reducing system-level component count and PCB area in space-constrained automotive HMI and sensor hub designs.
Availability
CY8C3446AXA-105 is available at Aetrix Electronics and suitable for automotive body control modules, ADAS sensor hubs, HVAC controllers, and electric power steering monitors requiring stable component supply across extended temperature ranges and AEC-Q100 compliance.
Supply support for CY8C3446AXA-105 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 owns the PSoC® portfolio. Infineon is a global semiconductor leader focused on power systems, automotive electronics, and security solutions.
The CY8C34 family belongs to Infineon's automotive-qualified PSoC® 3 platform, designed specifically for mixed-signal integration in body electronics, chassis, and comfort systems where programmable analog/digital resources reduce external component count and accelerate development of ASIL-B compliant functions.
FAQ
Is CY8C3446AXA-105 pin-compatible with other CY8C34 devices?
Yes - CY8C3446AXA-105 uses the 100-pin TQFP package shared across the CY8C3446x series. Pin mapping is consistent for power, reset, debug, CAN, USB, and GPIO groups. Differences exist only in peripheral enablement (e.g., USB/CAN presence) and memory size, which are configured in firmware, not hardware pinout.
Does CY8C3446AXA-105 require an external crystal for CAN operation?
No - CAN timing compliance is achieved using the internal 3–62 MHz IMO (Internal Main Oscillator) with PLL stabilization. The datasheet specifies CAN bit timing accuracy is maintained across voltage and temperature without external crystal dependency, though a 4–25 MHz crystal may be used for higher precision clocking if needed.
What development tools support CY8C3446AXA-105 firmware creation?
PSoC Creator™ IDE (v4.4 or later) is the official toolchain, providing schematic-based component configuration, automatic code generation, and debug support via KitProg2/MiniProg3. Third-party tools like Keil µVision and IAR Embedded Workbench support the 8051 core but lack PSoC-specific peripheral configurators and UDB logic synthesis.
How is flash security implemented on CY8C3446AXA-105?
Flash security is enforced via three hardware-configurable bits: Flash Protection (prevents external read via debug interface), Flash Write Protection (blocks program/erase commands), and Secure Boot (verifies signature of boot code). These are one-time programmable fuses; once set, they cannot be cleared without erasing all flash contents.
CY8C3446AXA-105 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, LCD, 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C3446AXA-105 FAQ
1.How can I place an order for CY8C3446AXA-105 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3446AXA-105 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 CY8C3446AXA-105 reliable?
The price and inventory of CY8C3446AXA-105 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3446AXA-105 is usually 5 days.
3.What payment methods are accepted for CY8C3446AXA-105?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3446AXA-105 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3446AXA-105?
CY8C3446AXA-105 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3446AXA-105 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 CY8C3446AXA-105?
For technical support, including CY8C3446AXA-105 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3446AXA-105 requirements.
6.How does Aetrix verify that CY8C3446AXA-105 is sourced from the original manufacturer or authorized distributors?
All CY8C3446AXA-105 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 CY8C3446AXA-105 meets industry standards.
7.What is the process for return or replacement of CY8C3446AXA-105?
All CY8C3446AXA-105 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3446AXA-105, 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 CY8C3446AXA-105 part is unused and in its original packaging.
Return procedure for CY8C3446AXA-105:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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