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Infineon Technologies CY8C3865AXA-019
- Part No.:
- CY8C3865AXA-019
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
CY8C3865AXA-019.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,216
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Product details
Overview
CY8C3865AXA-019 from Infineon Technologies (formerly Cypress) is an AEC-Q100 qualified automotive-grade programmable system-on-chip (PSoC® 3) integrating an 8051 CPU core, up to 64 KB flash, 8 KB SRAM, 2 KB EEPROM, 24-channel DMA, and mixed-signal peripherals including a 20-bit delta-sigma ADC (192 ksps), four opamps, four comparators, and full CAN 2.0b interface. It operates from 1.71 V to 5.5 V and supports –40 °C to +85 °C ambient temperature.
For engineers reviewing the CY8C3865AXA-019 datasheet, CY8C3865AXA-019 pinout, CY8C3865AXA-019 application, or CY8C3865AXA-019 equivalent, key selection criteria include its automotive qualification, integrated CAN 2.0b with 16 Rx/8 Tx buffers, configurable UDB-based digital logic, CapSense® support on GPIOs, and dual-domain I/O voltage capability (1.2 V to 5.5 V).
Technical Context
The CY8C3865AXA-019 implements a single-cycle 8051 microcontroller core running at up to 67 MHz via internal PLL, with 512-byte flash cache and ECC-protected configuration storage. Its analog subsystem centers on a 1.024 V ±0.1% internal reference and a programmable delta-sigma ADC supporting 8–20-bit resolution, ×0.25–×16 gain, and 66 dB SINAD in 12-bit mode.
Digital flexibility is delivered through 24 universal digital blocks (UDBs) enabling custom logic synthesis, plus fixed-function peripherals: USB 2.0 Full-Speed (12 Mbps), multimaster I²C, LIN 2.0, quadrature decoder, and a 24-bit DFB for FIR/IIR filtering. All digital and analog resources are routed to up to 62 GPIOs with per-pin configurability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051, up to 67 MHz - enables deterministic real-time control with minimal instruction latency. |
| Flash Memory | 64 KB, 100,000 write cycles, 20-year retention - supports field firmware updates and secure boot with multiple protection features. |
| ADC Resolution | Configurable 8–20-bit delta-sigma, 192 ksps max - delivers high-accuracy sensor acquisition from thermocouples to ultrasonic signals. |
| CAN Interface | Full CAN 2.0b compliant, 16 Rx + 8 Tx buffers - enables robust automotive network communication without external transceiver logic. |
| Operating Temp | –40 °C to +85 °C, AEC-Q100 Grade 2 qualified - certified for under-hood and body-control module deployment. |
| I/O Voltage Domains | Up to four independent domains, 1.2 V to 5.5 V - allows direct interfacing with legacy 5 V sensors and modern low-voltage logic without level shifters. |
| Power Modes | 1 µA sleep (RTC + LVD active), 200 nA hibernate (RAM retention) - extends battery life in always-on automotive subsystems. |
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 |
|---|---|---|
| VDDIO0–VDDIO3 | I/O power supply domains | Independent 1.2–5.5 V supplies per domain enable mixed-voltage system integration. |
| P0[0]–P7[7] | General-purpose I/O | All 62 GPIOs support CapSense®, analog routing, digital peripheral assignment, and configurable drive strength (25 mA sink on SIO pins). |
| USB_DP / USB_DM | USB 2.0 Full-Speed differential pair | Integrated PHY eliminates need for external USB transceiver; requires only ESD protection and series resistors. |
| CAN_TX / CAN_RX | CAN 2.0b physical layer interface | Direct connection to external CAN transceiver; supports bit rates up to 1 Mbps with built-in protocol engine. |
| XRES | External reset input | Active-low asynchronous reset with internal pull-up; compatible with automotive watchdog and power-supply monitoring circuits. |
| XTAL_IN / XTAL_OUT | Crystal oscillator terminals | Supports 4–25 MHz crystals for precision timing; optional 32.768 kHz RTC crystal also supported. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable UDB Array (24 blocks) | Enables hardware-level customization of digital logic (e.g., custom protocols, state machines) without FPGA complexity or cost. |
| CapSense® on Any GPIO | Eliminates dedicated touch controller ICs; supports self- and mutual-capacitance sensing with noise immunity tuning. |
| Delta-sigma ADC with Programmable Gain | Replaces external signal-conditioning amplifiers and ADCs for wide-dynamic-range sensor inputs (e.g., pressure, current, temp). |
| Integrated CAN 2.0b Controller | Reduces BOM count and PCB area by embedding protocol handling, message buffering, and error management in silicon. |
| Multi-domain I/O Voltage Support | Permits direct connection to 3.3 V microcontrollers, 5 V analog sensors, and 1.8 V FPGAs within same design. |
Applications
| Body Control Module | Instrument Cluster |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, lighting, and mirror adjustment in modern vehicles. IC Role / Device Role / Timing Role: Main MCU executing real-time control tasks, managing CAN bus communication with ECUs, and acquiring analog sensor data (e.g., ambient light, temperature). Use Value: Integrates CAN, ADC, PWM, and GPIO in one die-reducing component count and improving system reliability over discrete solutions. | Use Scenario: Driving analog gauges, TFT displays, and warning indicators using mixed analog/digital signals. IC Role / Device Role / Timing Role: System controller generating precise PWM for backlight dimming, driving LCD segments directly, and processing CAN messages from engine/transmission ECUs. Use Value: Direct LCD drive (46×16 segments) and CapSense® buttons eliminate external display drivers and touch controllers. |
| Advanced Driver Assistance Systems (ADAS) Sensor Hub | Automotive HVAC Control |
Use Scenario: Aggregating and preprocessing raw data from ultrasonic parking sensors, radar interfaces, and camera modules. IC Role / Device Role / Timing Role: Signal acquisition node performing real-time filtering (via DFB), time-of-flight calculation, and CAN message formatting before forwarding to ADAS domain controller. Use Value: On-chip 24-bit DFB enables FIR/IIR filtering at 67 MHz - avoids latency and bandwidth bottlenecks of off-chip DSPs. | Use Scenario: Regulating blower motor speed, blend door actuation, and cabin temperature feedback loops. IC Role / Device Role / Timing Role: Mixed-signal controller acquiring NTC thermistor readings, driving DC motors via PWM, and communicating status over LIN/CAN. Use Value: Four uncommitted opamps and four comparators allow analog signal conditioning and zero-crossing detection without external components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon CY8C3866AXI-065 | Same PSoC 3 architecture, 100-pin TQFP, but extended temperature range (–40 °C to +125 °C) and higher flash ECC coverage. | Targeted at under-hood applications (e.g., engine control, transmission) requiring extended thermal operation. | Select when operating ambient exceeds +85 °C or enhanced memory integrity is required for safety-critical functions. |
| NXP S32K144HAT0MLHT | ARM Cortex-M4F core, 128 KB flash, CAN FD support, ISO 26262 ASIL-B ready, no integrated analog subsystem. | Designed for functional safety–compliant powertrain and chassis systems; lacks on-chip opamps, ADC flexibility, and CapSense®. | Select when CAN FD, ASIL-B certification, or floating-point performance outweighs need for embedded analog configurability. |
Compared with CY8C3865AXA-019, CY8C3866AXI-065 offers extended thermal margin and stronger ECC, while S32K144HAT0MLHT provides CAN FD and ASIL-B readiness at the cost of integrated analog capability - making the CY8C3865AXA-019 optimal for cost-sensitive, mixed-signal automotive body electronics where AEC-Q100 Grade 2 suffices.
Availability
CY8C3865AXA-019 is available at Aetrix Electronics and suitable for body control modules, instrument clusters, HVAC controllers, and ADAS sensor hubs requiring stable component supply, long-term automotive qualification, and seamless migration from legacy 8-bit MCUs.
Supply support for CY8C3865AXA-019 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, and security ICs, with global R&D and manufacturing infrastructure.
The PSoC® 3 product line was originally developed by Cypress Semiconductor and acquired by Infineon in 2020; it targets automotive and industrial embedded systems requiring high analog-digital integration, field-programmable flexibility, and AEC-Q100 compliance.
FAQ
Does CY8C3865AXA-019 support USB device functionality without external crystal?
Yes. The part integrates a factory-trimmed internal oscillator certified for USB 2.0 Full-Speed (12 Mbps) operation, eliminating the need for an external 48 MHz crystal. This oscillator meets USB timing jitter requirements per TID#40770053, enabling plug-and-play connectivity in automotive infotainment and diagnostic tools.
What is the maximum number of simultaneous CapSense® buttons supported?
CY8C3865AXA-019 supports up to 62 self-capacitive or 31 mutual-capacitive buttons using any GPIO, with dedicated hardware scanning engine and baseline tracking. Performance remains stable across –40 °C to +85 °C, and firmware libraries in PSoC Creator™ provide auto-tuning for varying environmental conditions.
Can the delta-sigma ADC operate reliably below 2.7 V VDDA?
Yes, but with reduced specifications: at VDDA = 1.71 V, the ADC supports up to 16-bit resolution at 48 ksps with 75 dB SINAD and ±3 LSB INL/DNL (per Table 11-17). Operation below 2.7 V requires disabling internal reference bypass and using external reference for best accuracy.
Is JTAG debug supported in all power modes?
JTAG is fully operational in active and sleep modes, but not in hibernate mode (200 nA). In sleep mode, debug access remains available via SWD with real-time clock and LVD interrupts enabled; breakpoints and trace buffer retain state, allowing seamless resume after wake events.
CY8C3865AXA-019 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:
- 67MHz
- 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 16x20b; D/A 4x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C3865AXA-019 FAQ
1.How can I place an order for CY8C3865AXA-019 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3865AXA-019 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 CY8C3865AXA-019 reliable?
The price and inventory of CY8C3865AXA-019 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3865AXA-019 is usually 5 days.
3.What payment methods are accepted for CY8C3865AXA-019?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3865AXA-019 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3865AXA-019?
CY8C3865AXA-019 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3865AXA-019 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 CY8C3865AXA-019?
For technical support, including CY8C3865AXA-019 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3865AXA-019 requirements.
6.How does Aetrix verify that CY8C3865AXA-019 is sourced from the original manufacturer or authorized distributors?
All CY8C3865AXA-019 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 CY8C3865AXA-019 meets industry standards.
7.What is the process for return or replacement of CY8C3865AXA-019?
All CY8C3865AXA-019 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3865AXA-019, 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 CY8C3865AXA-019 part is unused and in its original packaging.
Return procedure for CY8C3865AXA-019:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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