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Infineon Technologies CY8C3666AXA-052
- Part No.:
- CY8C3666AXA-052
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
CY8C3666AXA-052.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,929
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Product details
Overview
CY8C3666AXA-052 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, 24-channel DMA, full CAN 2.0b interface (16 Rx/8 Tx buffers), and USB 2.0 Full-Speed peripheral. It operates from 1.71 V to 5.5 V, supports –40 °C to +125 °C extended temperature range, and delivers 67 MHz performance with internal PLL. Used in automotive body control modules requiring mixed-signal reconfigurability and functional safety support.
For engineers reviewing the CY8C3666AXA-052 datasheet, CY8C3666AXA-052 pinout, CY8C3666AXA-052 application, or CY8C3666AXA-052 equivalent, key selection criteria include AEC-Q100 Grade 0 qualification, integrated CAN+USB dual-interface capability, delta-sigma ADC with 12-bit/192 ksps performance, configurable UDB array for custom logic, and hibernate mode current of 200 nA with RAM retention.
Technical Context
The CY8C3666AXA-052 implements a single-cycle 8051 CPU core with flash cache and ECC-protected configuration storage, paired with a dual-domain analog subsystem featuring a 1.024 V ±0.1% reference and programmable gain delta-sigma ADC (×0.25–×16). Its digital subsystem includes 24 universal digital blocks (UDBs) supporting boolean primitives and prebuilt peripherals including LIN 2.0, CRC, PRS, and quadrature decoder.
Digital signal routing uses the Digital System Interconnect (DSI) fabric enabling any peripheral output to connect to any GPIO, while analog signals route via dedicated analog buses supporting up to 62 analog inputs. Clocking combines a 3–62 MHz IMO, 4–25 MHz crystal oscillator, 32.768 kHz RTC oscillator, and PLL for deterministic timing across automotive operating conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051 running up to 67 MHz; enables real-time deterministic control without instruction pipeline stalls. |
| 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 automotive ECUs. |
| Analog ADC | Configurable delta-sigma ADC: 12-bit @ 192 ksps, 66 dB SINAD, ±1 LSB INL/DNL; suitable for high-accuracy sensor acquisition (e.g., pressure, temp). |
| Digital Interfaces | Full CAN 2.0b (16 Rx/8 Tx buffers), USB 2.0 FS (12 Mbps, TID#40770053 certified), I²C multimaster; enables vehicle network coexistence and diagnostics. |
| Power Modes | Hibernate at 200 nA with RAM retention; sleep at 1 µA with RTC/LVD interrupt; supports battery-sensitive always-on automotive functions. |
| Temperature Range | –40 °C to +125 °C extended grade; qualified per AEC-Q100 Grade 0; validated for under-hood deployment. |
| I/O Flexibility | 62 GPIOs with full analog/digital routing, CapSense® on any pin, LCD direct drive (46×16), and 25 mA sink on SIO pins; reduces external component count. |
Pinout & Package
Package: 100-pin TQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA, VDDD | Analog/Digital Power Supply | Separate 1.71–5.5 V domains enable noise isolation between precision analog and switching digital circuits. |
| P0[0]–P0[7] | General-Purpose I/O (GPIO) | Support CapSense®, analog mux input, DAC output, or digital peripheral routing via DSI fabric. |
| CAN_TX, CAN_RX | CAN Bus Interface | Dedicated differential pair with internal termination; supports 1 Mbps CAN FD-ready physical layer signaling. |
| USBDP, USBDM | USB 2.0 Full-Speed PHY | Integrated transceiver with internal 1.5 kΩ pull-up; eliminates external USB resistor network. |
| XRES | External Reset Input | Active-low asynchronous reset with Schmitt-trigger input; compatible with automotive watchdog ICs. |
| XTAL_IN/XTAL_OUT | Crystal Oscillator Interface | Supports 4–25 MHz crystals for ppm-accurate clocking; required for CAN bit timing compliance. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable UDB Array | 24 universal digital blocks with PAL/PLD + state machine engines enable custom logic (e.g., protocol translators, glue logic) without FPGA overhead. |
| Digital Filter Block (DFB) | 24-bit fixed-point engine performing 48-bit MAC in one cycle; implements FIR/IIR filters up to 64 taps for sensor signal conditioning offload from CPU. |
| Delta-Sigma ADC Calibration | On-chip offset/gain calibration with <100 µV offset and 0.2% gain error; eliminates need for external trim components in production test. |
| CapSense® Integration | Capacitive sensing on all GPIOs with built-in IDACs and noise immunity algorithms; enables touch buttons/knobs without external ICs. |
| Secure Bootloader | Flash security features (read protection, secure erase) plus bootloader support over USB/I²C/SPI; enables field firmware updates with authentication. |
Applications
| Automotive Body Control Module | Smart HVAC Control Unit |
|---|---|
Use Scenario: Centralized control of door locks, lighting, window lifts, and mirror adjustment in modern vehicles. IC Role / Device Role / Timing Role: Primary MCU managing CAN message arbitration, PWM motor drives, and analog sensor fusion (temperature, humidity, ambient light). Use Value: Single-chip integration of CAN, USB diagnostics, 12-bit ADC, and 24-channel DMA reduces BOM cost by eliminating discrete interface ICs and external ADCs. |
Use Scenario: Closed-loop climate control with multi-zone temperature sensing, fan speed regulation, and air flap actuation. IC Role / Device Role / Timing Role: Real-time sensor acquisition (NTC thermistors, humidity sensors), PID computation, and PWM-driven BLDC fan control with thermal derating. Use Value: Delta-sigma ADC with programmable gain (×0.25–×16) directly interfaces low-level sensor outputs; hibernate mode enables ultra-low-power cabin monitoring during vehicle sleep. |
| Advanced Driver Assistance Systems (ADAS) Sensor Hub | Electric Vehicle Battery Management Interface |
Use Scenario: Aggregation and preprocessing of ultrasonic parking sensors, radar status indicators, and camera power sequencing signals. IC Role / Device Role / Timing Role: Signal conditioner and communication gateway between analog sensors and main ADAS domain controller via CAN. Use Value: 95 ns comparator response time enables precise echo timing for ultrasonic distance measurement; DFB offloads FIR filtering of raw sensor waveforms. |
Use Scenario: Monitoring cell voltage, temperature, and insulation resistance in 12S–24S battery packs with isolated communication to master BMS. IC Role / Device Role / Timing Role: Analog front-end and local controller interfacing with precision voltage references, opamps, and isolated CAN transceivers. Use Value: Internal 1.024 V ±0.1% reference ensures <±1 LSB ADC error across –40 °C to +125 °C; EEPROM stores calibration coefficients for lifetime traceability. |
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, 160 MHz, no integrated USB or CapSense; requires external USB PHY and touch controller. | Targets ASIL-B functional safety; stronger RTOS and AUTOSAR support but higher software stack complexity. | Select when ISO 26262 compliance and scalable multicore architecture are mandatory; avoid if USB/CapSense integration is required. |
| Renesas RL78/F14 | 16-bit RL78 core, 32 MHz max, integrated CAN and LIN but no USB or DFB; lower ADC resolution (10-bit SAR). | Focused on cost-sensitive entry-level automotive modules; lacks hibernate mode below 1 µA. | Select for simple CAN-based nodes where ultra-low-power hibernate and advanced analog processing are not needed. |
Compared with NXP S32K144 and Renesas RL78/F14, CY8C3666AXA-052 uniquely combines automotive-grade CAN+USB dual connectivity, sub-µA hibernate, and reconfigurable analog/digital hardware in a single die-enabling rapid iteration of sensor interface logic without PCB respins.
Availability
CY8C3666AXA-052 is available at Aetrix Electronics and suitable for automotive body control modules, smart HVAC systems, ADAS sensor hubs, and EV battery management interfaces requiring stable component supply across extended temperature ranges and AEC-Q100 compliance.
Supply support for CY8C3666AXA-052 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-performance, programmable mixed-signal ICs for automotive, industrial, and consumer applications, with emphasis on system integration and configurability.
The CY8C36 Automotive Family targets reconfigurable ECU designs needing analog precision, digital flexibility, and automotive reliability-delivering PSoC's signature "hardware-defined, firmware-tuned" architecture in AEC-Q100 qualified packages.
FAQ
Does CY8C3666AXA-052 support CAN FD?
No. The CY8C3666AXA-052 implements CAN 2.0b only, with 16 receive and 8 transmit buffers, compliant up to 1 Mbps. It lacks the variable bit rate and extended data length features of CAN FD. For CAN FD applications, consider Infineon's XMC7000 series or NXP S32K3xx devices.
What debug interfaces does CY8C3666AXA-052 provide?
CY8C3666AXA-052 supports JTAG (4-wire), Serial Wire Debug (SWD, 2-wire), and Single Wire Viewer (SWV) for real-time trace. It includes eight address breakpoints, one data breakpoint, and a 4 KB instruction trace buffer-enabling full visibility into CPU execution, peripheral register states, and DMA transfers during development.
Can the internal USB PHY be used without an external crystal?
Yes. The USB 2.0 Full-Speed peripheral uses the internal main oscillator (IMO) with automatic frequency trimming to meet USB specification timing requirements-no external crystal is required for USB operation, simplifying board layout and reducing BOM count.
Is CapSense® supported on all GPIO pins of CY8C3666AXA-052?
Yes, CapSense® is supported on all 62 GPIO pins. However, GPIOs connected to opamp outputs are not recommended for CapSense use due to potential noise coupling, as explicitly noted in the datasheet. Dedicated CapSense IDACs and scanning firmware are included in PSoC Creator™.
CY8C3666AXA-052 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 100-LQFP
- Series:
- PSOC™ 3 CY8C36xx
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 67MHz
- 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 4x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C3666AXA-052 FAQ
1.How can I place an order for CY8C3666AXA-052 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3666AXA-052 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 CY8C3666AXA-052 reliable?
The price and inventory of CY8C3666AXA-052 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3666AXA-052 is usually 5 days.
3.What payment methods are accepted for CY8C3666AXA-052?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3666AXA-052 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3666AXA-052?
CY8C3666AXA-052 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3666AXA-052 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 CY8C3666AXA-052?
For technical support, including CY8C3666AXA-052 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3666AXA-052 requirements.
6.How does Aetrix verify that CY8C3666AXA-052 is sourced from the original manufacturer or authorized distributors?
All CY8C3666AXA-052 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 CY8C3666AXA-052 meets industry standards.
7.What is the process for return or replacement of CY8C3666AXA-052?
All CY8C3666AXA-052 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3666AXA-052, 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 CY8C3666AXA-052 part is unused and in its original packaging.
Return procedure for CY8C3666AXA-052:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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