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Infineon Technologies CY8C3846AXE-175
- Part No.:
- CY8C3846AXE-175
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
CY8C3846AXE-175.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,974
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Product details
Overview
CY8C3846AXE-175 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, and delta-sigma ADC with 20-bit resolution. It operates from 1.71 V to 5.5 V across –40 °C to +85 °C and supports CapSense®, LCD direct drive, and precision timing for body control modules.
For engineers reviewing the CY8C3846AXE-175 datasheet, CY8C3846AXE-175 pinout, CY8C3846AXE-175 application, or CY8C3846AXE-175 equivalent, this device delivers verified mixed-signal integration for automotive ECU design-particularly where CAN+USB coexistence, low-power hibernate (<200 nA), and reconfigurable analog front-ends (e.g., thermocouple-to-ultrasonic signal acquisition) are required.
Technical Context
The CY8C3846AXE-175 implements a single-cycle 8051 microcontroller core clocked up to 67 MHz via internal PLL, with flash memory supporting 100,000 write cycles and 20-year data retention. Its digital subsystem includes 24 universal digital blocks (UDBs) enabling hardware-level implementation of UART, SPI, LIN, CRC, and quadrature decoding without CPU overhead.
Analog capability centers on a 1.024 V ±0.1% reference and a configurable delta-sigma ADC delivering 192 ksps at 12-bit (66 dB SINAD) or 48 ksps at 16-bit (83 dB SINAD), plus four opamps (25 mA drive), four comparators (95 ns response), and four SC/CT blocks usable as PGA, TIA, or mixer-each routable to any GPIO.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051 running up to 67 MHz; enables deterministic real-time control with multiply/divide instructions. |
| Memory | 64 KB flash (100k cycles, 20-yr retention), 8 KB SRAM, 2 KB EEPROM (1M cycles); supports secure firmware updates and parameter storage. |
| ADC Resolution | Configurable 8–20-bit delta-sigma ADC; 16-bit mode achieves 83 dB SINAD at 48 ksps for high-fidelity sensor digitization. |
| CAN Interface | Full CAN 2.0b compliant with 16 Rx / 8 Tx buffers; meets ISO 11898-1 for robust in-vehicle networking. |
| Power Modes | Hibernate mode draws 200 nA with RAM retention; sleep mode consumes 1 µA with RTC and LVD interrupt wake-up. |
| Operating Temp | –40 °C to +85 °C automotive grade; AEC-Q100 Grade 2 qualified for under-hood and cabin applications. |
| I/O Count | 62 GPIOs + 8 SIO + 2 USBIO; all GPIOs support CapSense®, LCD segment drive (up to 46×16), and configurable pull/sink (25 mA on SIO). |
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-isolated analog operation while digital logic runs at optimized voltage. |
| P0[0]–P0[7] | General-Purpose I/O Bank 0 | Routable to all digital/analog peripherals; supports CapSense®, LCD segment, or opamp output (not recommended for both simultaneously). |
| CAN_TX, CAN_RX | CAN Bus Physical Interface | Differential pair routed to internal CAN controller; requires external termination and ESD protection per ISO 11898-2. |
| USB_DP, USB_DM | USB 2.0 Full-Speed PHY | On-die transceiver compliant with USB-IF TID#40770053; no external crystal needed-uses internal oscillator. |
| XRES | External Reset Input | Active-low asynchronous reset pin; debounced internally; overrides all power-on-reset conditions. |
| SWDCK, SWDIO | Serial Wire Debug Interface | 2-wire JTAG alternative enabling debug access with minimal pin count and trace support via SWV. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable UDB Array | 24 universal digital blocks enable hardware acceleration of custom logic (e.g., protocol stacks, filtering) without CPU load. |
| Delta-Sigma ADC Flexibility | Programmable gain (×0.25–×16), resolution (8–20-bit), and sample rate (up to 192 ksps) adapt to diverse sensor types. |
| Multi-Domain I/O Voltage | Four independent I/O voltage domains (1.2–5.5 V) allow interfacing with legacy 3.3 V, modern 1.8 V, and high-voltage sensors. |
| CapSense® Integration | Capacitive sensing engine embedded in analog subsystem; supports proximity, slider, and button detection using any GPIO. |
| Automotive Clocking | 32.768 kHz watch crystal oscillator + low-power 1/33/100 kHz internal oscillators ensure accurate RTC and wake timing in battery-critical modes. |
Applications
| Body Control Module (BCM) | Instrument Cluster |
|---|---|
|
Use Scenario: Centralized management of door locks, window lifts, lighting, and wiper control in modern vehicles. IC Role / Device Role / Timing Role: Primary MCU executing real-time control tasks, managing CAN communication with gateway, and acquiring analog sensor inputs (e.g., ambient light, temperature). Use Value: Integrated CAN 2.0b and 24-channel DMA offload bus traffic and sensor polling, reducing host CPU utilization by >40% versus discrete solutions. |
Use Scenario: Driving TFT-LCD displays with analog gauges, warning indicators, and driver information overlays. IC Role / Device Role / Timing Role: Display controller with built-in LCD direct drive (46×16 segments) and PWM dimming, synchronized to vehicle CAN clock domain. Use Value: Eliminates external LCD driver IC and reduces BOM count by 3 components while maintaining <100 µs display update latency. |
| Occupant Detection System | Smart Junction Box |
|
Use Scenario: Capacitive seat occupancy sensing combined with pressure and temperature monitoring for airbag deployment logic. IC Role / Device Role / Timing Role: Analog front-end and processing unit for multi-sensor fusion, using CapSense® and delta-sigma ADC with 16-bit resolution at 48 ksps. Use Value: On-chip PGA and TIA configurations enable direct connection to piezoresistive and capacitive sensors-no external signal conditioning required. |
Use Scenario: Power distribution and load switching for lighting, HVAC, and infotainment subsystems in electric vehicles. IC Role / Device Role / Timing Role: Intelligent power manager implementing PWM-controlled MOSFET gate drivers and current sensing via integrated opamps and comparators. Use Value: Four uncommitted opamps (25 mA drive) and fast comparators (95 ns) enable closed-loop current limiting and thermal foldback without external amplifiers. |
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, 512 KB flash; lacks integrated CapSense® and LCD drive; requires external USB PHY. | Better suited for safety-critical ASIL-B functions with hardware FPU and ECC RAM; less optimal for capacitive HMI or display integration. | Select when functional safety certification (ISO 26262) is mandatory and analog peripheral integration is secondary. |
| Renesas RL78/F14 | 16-bit RL78 core, 32 MHz, 256 KB flash; includes CAN and 12-bit SAR ADC but no USB or configurable analog blocks. | Lower cost for basic CAN-based control nodes; no support for high-resolution delta-sigma conversion or CapSense®. | Select for cost-sensitive, non-HMI automotive nodes where USB/CapSense® are unnecessary and 12-bit ADC suffices. |
Compared with NXP S32K144 and Renesas RL78/F14, CY8C3846AXE-175 uniquely combines automotive CAN, USB FS, CapSense®, and programmable analog in one die-reducing board area by ≥35% and eliminating 6–9 external components in HMI-rich ECUs.
Availability
CY8C3846AXE-175 is available at Aetrix Electronics and suitable for body control modules, instrument clusters, occupant detection systems, and smart junction boxes requiring stable component supply and long-term automotive lifecycle support.
Supply support for CY8C3846AXE-175 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 is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive MCUs, and security solutions with deep expertise in AEC-Q100 qualification and automotive reliability.
CY8C3846AXE-175 belongs to the PSoC® 3 automotive family-designed specifically for reconfigurable mixed-signal integration in cost- and space-constrained automotive ECUs where analog flexibility, CAN/USB coexistence, and ultra-low-power hibernate are critical.
FAQ
Is CY8C3846AXE-175 pin-compatible with other CY8C38 devices?
Yes-CY8C3846AXE-175 uses the 100-pin TQFP package shared across CY8C38xx-17x variants. Pin functions are consistent within the same package option, though specific peripheral enablement (e.g., USBIO, CAN) depends on silicon configuration and must be verified against the device-specific ordering code in Section 12.1 of datasheet 001-54683 Rev. *L.
Does CY8C3846AXE-175 support USB device enumeration without external crystal?
Yes-the device integrates a USB 2.0 Full-Speed PHY certified under USB-IF TID#40770053 and uses its internal oscillator for USB timing. No external crystal or oscillator is required for standard USB device operation, simplifying layout and reducing BOM cost.
What is the maximum operating frequency of the delta-sigma ADC in CY8C3846AXE-175?
The delta-sigma ADC achieves up to 192 ksps in 12-bit mode (66 dB SINAD) and 48 ksps in 16-bit mode (83 dB SINAD), with programmable gain (×0.25–×16) and resolution (8–20-bit). Performance is guaranteed only when VDDA ≥ 2.7 V per Table 11-17 in the datasheet.
How does the hibernate mode preserve functionality while drawing only 200 nA?
Hibernate mode retains full SRAM content and maintains the real-time clock (RTC) using the 32.768 kHz watch crystal oscillator. It disables the CPU, flash, and most peripherals while keeping the LVD circuit and selected wakeup sources active-enabling sub-10 µs wake latency from external interrupt or RTC alarm.
CY8C3846AXE-175 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
- 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 16x20b; D/A 4x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C3846AXE-175 FAQ
1.How can I place an order for CY8C3846AXE-175 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3846AXE-175 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-175 reliable?
The price and inventory of CY8C3846AXE-175 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3846AXE-175 is usually 5 days.
3.What payment methods are accepted for CY8C3846AXE-175?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3846AXE-175 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3846AXE-175?
CY8C3846AXE-175 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3846AXE-175 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-175?
For technical support, including CY8C3846AXE-175 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3846AXE-175 requirements.
6.How does Aetrix verify that CY8C3846AXE-175 is sourced from the original manufacturer or authorized distributors?
All CY8C3846AXE-175 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-175 meets industry standards.
7.What is the process for return or replacement of CY8C3846AXE-175?
All CY8C3846AXE-175 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3846AXE-175, 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-175 part is unused and in its original packaging.
Return procedure for CY8C3846AXE-175:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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