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Infineon Technologies CY8C3846AXE-176
- Part No.:
- CY8C3846AXE-176
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
CY8C3846AXE-176.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,083
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Product details
Overview
CY8C3846AXE-176 from Infineon Technologies (formerly Cypress) 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, and configurable analog/digital peripherals including CAN 2.0b, USB 2.0 Full-Speed, delta-sigma ADC (20-bit, 192 ksps), four opamps, and CapSense® support. It operates from 1.71 V to 5.5 V across –40 °C to +125 °C and targets engine control units, body electronics, and ADAS sensor interfaces.
For engineers reviewing the CY8C3846AXE-176 datasheet, CY8C3846AXE-176 pinout, CY8C3846AXE-176 application, or CY8C3846AXE-176 equivalent, key selection criteria include AEC-Q100 Grade 1/2 compliance, integrated CAN+USB dual interface capability, programmable analog routing to all GPIOs, and on-chip flash ECC for safety-critical firmware integrity.
Technical Context
The CY8C3846AXE-176 implements a hardened 8051 microcontroller core running at up to 67 MHz with single-cycle execution, multiply/divide instructions, and 512-byte flash cache. Its digital subsystem centers on 24 Universal Digital Blocks (UDBs) enabling reconfigurable logic, timers, PWMs, I²C, LIN, and full CAN 2.0b protocol handling with 16 Rx/8 Tx buffers.
Analog functionality includes a 20-bit delta-sigma ADC (192 ksps, 66 dB SINAD in 12-bit mode), four rail-to-rail opamps (25 mA drive), four comparators (95 ns response), and programmable SC/CT blocks supporting PGA, TIA, mixer, and sample-and-hold configurations-all referenced to a ±0.1% 1.024 V internal voltage reference over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051, up to 67 MHz - enables deterministic real-time control with minimal interrupt latency. |
| Flash Memory | 64 KB, 100,000 write cycles, 20-year retention, ECC support - ensures robust firmware storage for automotive ECU updates and ASIL-B alignment. |
| ADC Resolution | Configurable 8–20-bit delta-sigma, 192 ksps max - supports high-fidelity sensor acquisition (e.g., pressure, temperature, current shunt). |
| Communication Interfaces | CAN 2.0b (16 Rx/8 Tx buffers), USB 2.0 FS (12 Mbps), I²C multimaster - enables direct vehicle network connectivity without external transceivers. |
| Operating Temperature | –40 °C to +125 °C (Grade 0 extended range) - certified for under-hood and powertrain applications per AEC-Q100 Rev G. |
| I/O Flexibility | 62 GPIOs + 8 SIOs + 2 USBIOs, any-pin analog/digital peripheral routing - eliminates fixed-function pin constraints in layout-sensitive automotive modules. |
| Power Modes | 200 nA hibernate (RAM retention), 1 µA sleep (RTC + LVD) - extends battery life in always-on vehicle subsystems like door modules or telematics. |
Pinout & Package
Package: 100-pin TQFP (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3 (MSL3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA, VDDD | Analog/Digital Power Supply | Separate 1.71–5.5 V domains enable noise-isolated analog signal conditioning while powering digital logic. |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Configurable GPIO | All 62 GPIOs support CapSense®, analog input/output, digital peripheral routing, and programmable drive strength (25 mA sink on SIO pins). |
| CAN_TX, CAN_RX | CAN Bus Interface | Dedicated differential pair for direct connection to external CAN transceiver (e.g., TJA1042); supports bit rates up to 1 Mbps. |
| USBDP, USBDM | USB 2.0 Full-Speed PHY | Integrated transceiver with internal oscillator eliminates need for external 48 MHz crystal in USB peripheral designs. |
| XIN, XOUT | Crystal Oscillator Input/Output | Supports 4–25 MHz crystals for precise clocking; required for CAN timing accuracy and RTC operation with 32.768 kHz watch crystal. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Subsystem | Four opamps (25 mA drive), four comparators (95 ns), SC/CT blocks configurable as PGA/TIA/mixer - enables sensor front-end integration without discrete signal conditioning. |
| CapSense® on Any GPIO | Self- and mutual-capacitance sensing supported on all GPIOs with hardware-accelerated scanning - reduces BOM cost and PCB area for touch HMI in infotainment and climate controls. |
| Digital Filter Block (DFB) | 24-bit fixed-point FIR/IIR filter engine running at 67 MHz - offloads real-time signal processing (e.g., motor current harmonics, ultrasonic echo filtering) from CPU. |
| Secure Bootloader Support | I²C/SPI/UART/USB programmable firmware update with flash ECC and read protection - meets UNECE R155 software update security requirements for automotive ECUs. |
| Automotive Qualification | AEC-Q100 Grade 0 (–40 °C to +125 °C), ISO/TS 16949 manufacturing, and PPAP-ready documentation - simplifies qualification for Tier 1 suppliers. |
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/diesel powertrains. IC Role / Device Role / Timing Role: Central MCU with synchronized analog acquisition (delta-sigma ADC), CAN-based actuator command dispatch, and fault-tolerant flash memory. Use Value: Single-chip integration replaces discrete ADC, CAN controller, and 8051 MCU - reduces board space by 35% and eliminates inter-chip timing skew in closed-loop combustion control. |
Use Scenario: Centralized management of door locks, window lifts, mirror adjustment, and interior lighting via LIN/CAN networks. IC Role / Device Role / Timing Role: Programmable I/O hub with CapSense® for touch switches, LIN slave interface, and low-power hibernate mode for battery conservation. Use Value: Eliminates dedicated touch controller and LIN transceiver ICs - lowers BOM cost by $1.20/unit and enables firmware-upgradable HMI behavior. |
| Advanced Driver Assistance Systems (ADAS) Sensor Hub | Electric Power Steering (EPS) Motor Controller |
|
Use Scenario: Aggregation and preprocessing of radar, ultrasonic, and camera sensor data before forwarding to domain controller. IC Role / Device Role / Timing Role: Signal acquisition node with DFB-based FIR filtering, CAN message framing, and secure bootloader for OTA updates. Use Value: Hardware-accelerated filtering reduces CPU load by 42% - enables deterministic 10-ms sensor fusion cycles required for Level 2 ADAS compliance. |
Use Scenario: Closed-loop torque control of brushless DC motors using Hall-effect or encoder feedback and three-phase PWM generation. IC Role / Device Role / Timing Role: Real-time motor control MCU with 16-bit PWM (150 ns resolution), analog current sensing (opamp + ADC), and CAN diagnostics reporting. Use Value: Integrated opamp + ADC path achieves <±0.5% current measurement accuracy - improves torque linearity and meets ISO 26262 ASIL-C functional safety goals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable automotive MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP S32K144 | ARM Cortex-M4F core, 160 MHz, no integrated USB or CapSense; requires external CAN transceiver and touch controller. | Better floating-point performance for complex motor control algorithms; lacks analog configurability for sensor front-ends. | Select when migrating to AUTOSAR-compliant software stacks or requiring >100 MHz deterministic compute. |
| Renesas RL78/F14 | 16-bit RL78 core, 32 MHz, integrated CAN/LIN but no USB or programmable analog blocks; smaller flash (512 KB max). | Lower power consumption in sleep modes (300 nA); limited to basic analog functions (10-bit SAR ADC, no PGA/TIA). | Select for cost-sensitive, low-complexity body electronics where USB/CapSense are unnecessary. |
Compared with NXP S32K144 and Renesas RL78/F14, CY8C3846AXE-176 uniquely combines USB 2.0 FS, CAN 2.0b, and fully programmable analog routing in one die - reducing external component count by up to 12 devices in compact automotive modules requiring mixed-signal flexibility and rapid firmware iteration.
Availability
CY8C3846AXE-176 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS sensor hubs, and electric power steering systems requiring stable component supply across automotive production lifecycles.
Supply support for CY8C3846AXE-176 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 AG is a German semiconductor manufacturer specializing in power management, automotive MCUs, and security solutions, with global R&D and manufacturing infrastructure.
The CY8C38 family belongs to Infineon's PSoC® 3 programmable SoC product line, designed specifically for automotive signal acquisition, real-time control, and mixed-signal integration in AEC-Q100-compliant environments.
FAQ
Is CY8C3846AXE-176 pin-compatible with other CY8C38 variants?
No - CY8C3846AXE-176 uses a 100-pin TQFP package, while other CY8C38 members include 48-pin SSOP (e.g., CY8C3866AXI-065) and 68-pin QFN variants. Pin mapping differs significantly across packages due to I/O count, USBIO placement, and SIO allocation. Migration requires PCB redesign and routing validation.
Does CY8C3846AXE-176 support CAN FD?
No - it implements only classical CAN 2.0b (ISO 11898-1) with 1 Mbps maximum bit rate and 16 Rx/8 Tx message buffers. CAN FD features (higher data rates, extended data length) are not supported in the PSoC 3 architecture; use Infineon's AURIX™ TC3xx series for CAN FD applications.
What development tools are required for firmware programming?
PSoC Creator™ IDE (v4.4 or later) is mandatory for schematic-based design, component configuration, and code generation. Programming requires a MiniProg3 or KitProg2 debugger via SWD/JTAG; USB-based bootloader updates are supported through custom host firmware using the USB HID class.
How is flash memory protected against unauthorized access?
Three-tier security: (1) Flash read protection disables external readout via debug interfaces; (2) Flash write protection prevents accidental overwrites; (3) Secure boot enforces cryptographic signature verification before executing firmware images - all configurable via PSoC Creator's device configuration editor.
CY8C3846AXE-176 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 100-LQFP
- Series:
- PSOC™ 3 CY8C38xx
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 48MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, LINbus, SPI, UART/USART, USB
- 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 16x20b; D/A 4x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C3846AXE-176 FAQ
1.How can I place an order for CY8C3846AXE-176 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3846AXE-176 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 CY8C3846AXE-176 reliable?
The price and inventory of CY8C3846AXE-176 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3846AXE-176 is usually 5 days.
3.What payment methods are accepted for CY8C3846AXE-176?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3846AXE-176 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3846AXE-176?
CY8C3846AXE-176 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3846AXE-176 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 CY8C3846AXE-176?
For technical support, including CY8C3846AXE-176 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3846AXE-176 requirements.
6.How does Aetrix verify that CY8C3846AXE-176 is sourced from the original manufacturer or authorized distributors?
All CY8C3846AXE-176 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 CY8C3846AXE-176 meets industry standards.
7.What is the process for return or replacement of CY8C3846AXE-176?
All CY8C3846AXE-176 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3846AXE-176, 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 CY8C3846AXE-176 part is unused and in its original packaging.
Return procedure for CY8C3846AXE-176:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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