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Infineon Technologies CY8C3865AXA-018
- Part No.:
- CY8C3865AXA-018
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
CY8C3865AXA-018.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,493
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Product details
Overview
CY8C3865AXA-018 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), and four opamps - deployed in engine control units, body electronics, and ADAS sensor interfaces.
For engineers reviewing the CY8C3865AXA-018 datasheet, CY8C3865AXA-018 pinout, CY8C3865AXA-018 application, or CY8C3865AXA-018 equivalent, key selection criteria include AEC-Q100 Grade 2 (–40 °C to +105 °C), 100-pin TQFP package with 62 GPIOs, CAN/USB dual-interface capability, and configurable analog blocks supporting CapSense®, thermocouple, and ultrasonic signal acquisition.
Technical Context
The CY8C3865AXA-018 implements a single-cycle 8051 microcontroller core operating at up to 67 MHz with integrated flash ECC, 512-byte instruction cache, and hardware multiply/divide. Its digital subsystem uses 24 Universal Digital Blocks (UDBs) for custom logic synthesis and includes dedicated CAN 2.0b controller (16 Rx/8 Tx buffers) and USB 2.0 FS PHY certified per TID#40770053.
Analog resources include a 20-bit delta-sigma ADC (192 ksps, 66 dB SINAD at 12-bit mode), four rail-to-rail opamps (25 mA drive), four comparators (95 ns response), and programmable SC/CT blocks configured as PGA, TIA, or mixer - all referenced to a 1.024 V ±0.1% internal voltage reference stable across –40 °C to +85 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051 running up to 67 MHz; enables deterministic real-time control with hardware multiply/divide for motor or sensor math. |
| 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. |
| ADC Resolution | Configurable 8–20-bit delta-sigma ADC; 12-bit mode delivers 192 ksps sampling with ±1-bit INL/DNL for high-fidelity sensor digitization. |
| CAN Interface | Full CAN 2.0b controller with 16 Rx and 8 Tx message buffers; meets ISO 11898-1 for robust in-vehicle network communication. |
| Operating Temp | AEC-Q100 Grade 2: –40 °C to +105 °C ambient; validated for under-hood automotive applications without derating. |
| I/O Count | 62 GPIOs + 8 SIO + 2 USBIO pins; all support configurable drive modes, Schmitt-trigger inputs, and maskable IRQ for flexible peripheral routing. |
| Power Modes | 1 µA sleep (RTC + LVD active), 200 nA hibernate (RAM retention); enables ultra-low-power wake-on-event operation in battery-backed modules. |
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 sensing while powering digital logic at same voltage. |
| P0[0]–P7[7] | General-Purpose I/O | All 62 GPIOs support CapSense®, LCD direct drive (up to 46×16 segments), and analog peripheral routing via DSI. |
| CAN_TX, CAN_RX | CAN Bus Interface | Dedicated differential pair compliant with ISO 11898-2 physical layer; requires external termination and common-mode choke. |
| USBDP, USBDM | USB 2.0 Full-Speed PHY | Integrated transceiver with internal oscillator; eliminates need for external crystal when using USB as primary interface. |
| XRES | External Reset Input | Active-low asynchronous reset pin; accepts 1.2–5.5 V logic levels and triggers full system initialization. |
| SWDCK, SWDIO | Serial Wire Debug | 2-wire JTAG alternative enabling debug access with minimal pin count; supports breakpoints, trace, and flash programming. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Analog Blocks | Four SC/CT blocks support PGA, TIA, mixer, or sample-and-hold configurations - enabling single-chip front-end design for current/voltage/impedance sensing. |
| CapSense® Integration | Capacitive touch sensing on any GPIO without external components; supports proximity, slider, and button detection with built-in noise immunity algorithms. |
| Digital Filter Block (DFB) | 24-bit fixed-point FIR/IIR filter engine running at 67 MHz; offloads time-critical signal processing (e.g., engine knock detection) from CPU. |
| Programmable Clock Tree | Multiple oscillators (IMO, ILO, WCO, XOSC) with PLL up to 67 MHz; allows dynamic clock scaling and independent domain gating for power optimization. |
| Security Features | Flash protection bits, secure boot, and NVL-based configuration locking prevent unauthorized firmware extraction or modification in production ECUs. |
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 signal acquisition and closed-loop actuator control unit with CAN bus coordination and deterministic 67-MHz timing. Use Value: Integrated 20-bit ADC and DFB enable precise combustion timing calculation; CAN+USB dual interface simplifies diagnostics and calibration during service. |
Use Scenario: Managing door locks, lighting, window lifts, and climate controls across multiple vehicle zones. IC Role / Device Role / Timing Role: Low-power system controller interfacing with LIN slaves and driving resistive/capacitive loads via GPIOs and opamps. Use Value: 200-nA hibernate mode extends battery life in parked vehicles; CapSense® GPIOs eliminate mechanical switches for interior touch panels. |
| Advanced Driver Assistance Systems (ADAS) Sensor Hub | Automotive Infotainment Front-End |
Use Scenario: Aggregating radar echo, ultrasonic parking, and camera focus signals for object detection and distance estimation. IC Role / Device Role / Timing Role: High-bandwidth analog front-end with delta-sigma ADC and opamp TIA stages feeding digital filtering and CAN transmission. Use Value: 192-ksps ADC sampling and 67-MHz DFB allow real-time FIR filtering of ultrasonic return pulses without CPU overhead. |
Use Scenario: Supporting capacitive touchscreen, audio codec interface, and USB media streaming in head-unit displays. IC Role / Device Role / Timing Role: Mixed-signal hub managing touch input, audio DAC/ADC, and USB host/device switching. Use Value: Single-chip integration reduces BOM count; USB 2.0 FS PHY with internal oscillator eliminates external crystal cost and layout complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C3866AXI-063 | Same architecture but extended temperature range (–40 °C to +125 °C), 100-pin TQFP, no USB PHY - relies on external transceiver. | Suitable for under-hood applications exceeding +105 °C ambient; lacks integrated USB, requiring external PHY for USB connectivity. | Select when higher junction temperature rating is required and USB is not needed or implemented externally. |
| SPC560B50L5 | 32-bit Power Architecture MCU with e200z0 core, 512 KB flash, integrated CAN FD, but no configurable analog blocks or CapSense®. | Targets high-integrity powertrain control with ASIL-B compliance; lacks mixed-signal flexibility for sensor front-ends or HMI. | Select when functional safety (ISO 26262) certification is mandatory and analog configurability is secondary to deterministic execution. |
Compared with CY8C3865AXA-018, CY8C3866AXI-063 trades USB integration for extended thermal rating, while SPC560B50L5 replaces programmable analog/digital fabric with ASIL-B-certified deterministic execution - making CY8C3865AXA-018 optimal for cost-sensitive, mixed-signal automotive nodes needing rapid firmware iteration.
Availability
CY8C3865AXA-018 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS sensor hubs, and infotainment front-ends requiring stable component supply across automotive production lifecycles.
Supply support for CY8C3865AXA-018 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 maintains the PSoC® portfolio as part of its automotive microcontroller and embedded solutions business.
The CY8C38 family was designed as a scalable, AEC-Q100 qualified programmable SoC platform targeting automotive signal acquisition, sensor fusion, and real-time control - bridging the gap between fixed-function MCUs and FPGA-based systems.
FAQ
Is CY8C3865AXA-018 pin-compatible with other CY8C38 devices?
Yes - all 100-pin TQFP variants in the CY8C38 family share identical pinouts and footprint, including CY8C3865AXA-018, CY8C3866AXI-063, and CY8C3867AXI-101. This enables hardware reuse across temperature grades and feature sets without PCB redesign.
Does CY8C3865AXA-018 support CAN FD?
No - it implements only classical CAN 2.0b (up to 1 Mbps). CAN FD capability is not present in the CY8C38 series; that feature appears in later PSoC 4 and Traveo™ families. The device supports 16 Rx and 8 Tx message buffers with programmable acceptance filtering.
What development tools are required for firmware deployment?
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 or JTAG; USB bootloader support enables field updates over UART, I2C, or USB interfaces.
Can the internal opamps drive capacitive touch sensors directly?
No - GPIOs with opamp outputs are explicitly excluded from CapSense® use per datasheet Note 4. CapSense® must be implemented using standard GPIOs with internal SC/CT block routing; opamp outputs are reserved for analog signal conditioning (e.g., TIA for photodiode current amplification).
CY8C3865AXA-018 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
- 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-018 FAQ
1.How can I place an order for CY8C3865AXA-018 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3865AXA-018 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-018 reliable?
The price and inventory of CY8C3865AXA-018 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3865AXA-018 is usually 5 days.
3.What payment methods are accepted for CY8C3865AXA-018?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3865AXA-018 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3865AXA-018?
CY8C3865AXA-018 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3865AXA-018 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-018?
For technical support, including CY8C3865AXA-018 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3865AXA-018 requirements.
6.How does Aetrix verify that CY8C3865AXA-018 is sourced from the original manufacturer or authorized distributors?
All CY8C3865AXA-018 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-018 meets industry standards.
7.What is the process for return or replacement of CY8C3865AXA-018?
All CY8C3865AXA-018 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3865AXA-018, 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-018 part is unused and in its original packaging.
Return procedure for CY8C3865AXA-018:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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