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Infineon Technologies CY8C3866PVA-021
- Part No.:
- CY8C3866PVA-021
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
CY8C3866PVA-021.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,230
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Product details
Overview
CY8C3866PVA-021 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 a 20-bit delta-sigma ADC (192 ksps), four opamps, four comparators, full CAN 2.0b interface, USB 2.0 Full-Speed peripheral, and CapSense® support. It operates from 1.71 V to 5.5 V across –40 °C to +85 °C in a 100-pin TQFP package.
For engineers reviewing the CY8C3866PVA-021 datasheet, CY8C3866PVA-021 pinout, CY8C3866PVA-021 application, or CY8C3866PVA-021 equivalent, key selection criteria include AEC-Q100 compliance, integrated CAN/USB connectivity, programmable analog blocks (PGA/TIA/mixer), low-power hibernate mode (200 nA with RAM retention), and PSoC Creator™-based firmware-configurable peripherals for rapid automotive sensor and control system development.
Technical Context
The CY8C3866PVA-021 implements a single-cycle 8051 CPU core running at up to 67 MHz with 512-byte flash cache and ECC-protected configuration storage. Its digital subsystem centers on 24 universal digital blocks (UDBs) supporting programmable logic, timers, PWMs, I2C, LIN, CRC, and quadrature decoding via DSI routing.
Analog functionality includes a 20-bit delta-sigma ADC (192 ksps at 12-bit, 48 ksps at 16-bit), four rail-to-rail opamps (25 mA drive), four 95-ns comparators, and four SC/CT blocks configurable as PGA, TIA, mixer, or sample-and-hold - all referenced to a 1.024 V ±0.1% internal voltage reference stable from –40 °C to +85 °C.
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 code storage. |
| ADC Resolution | Configurable 8–20-bit delta-sigma, 192 ksps max - delivers high-accuracy thermocouple, pressure, or current sensing. |
| Operating Temp | –40 °C to +85 °C (automotive grade), AEC-Q100 Grade 2 - validated for under-hood and cabin control modules. |
| Digital Interfaces | Full CAN 2.0b (16 Rx/8 Tx buffers), USB 2.0 FS (12 Mbps), I2C multimaster - enables direct ECU communication without external transceivers. |
| Low-Power Modes | Hibernate at 200 nA with RAM retention; sleep at 1 µA with RTC/LVD - extends battery life in always-on vehicle systems. |
| I/O Count | 62 GPIO + 8 SIO + 2 USBIO - supports mixed-signal routing, LCD direct drive (46×16), and CapSense® touch sensing. |
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, VSSA | Analog power supply/ground | Separate 1.71–5.5 V analog domain with dedicated LDO filtering - ensures ADC/DAC accuracy unaffected by digital noise. |
| P0[0]–P0[7] | General-purpose I/O bank 0 | Supports CapSense®, analog input, opamp output, or digital routing - configurable per-pin for mixed-signal signal chain integration. |
| CAN_TX, CAN_RX | CAN bus physical layer interface | Dedicated differential pair with internal termination - enables direct connection to CAN transceiver or isolated bus interface. |
| USBDP, USBDM | USB 2.0 Full-Speed differential pair | On-die USB PHY with internal 1.5-kΩ pull-up - eliminates external resistors and simplifies USB device enumeration. |
| XRES | External reset input | Active-low, Schmitt-triggered, 1.2–5.5 V tolerant - allows robust reset assertion during power sequencing or watchdog timeout. |
| XTAL1, XTAL2 | Crystal oscillator inputs | Supports 4–25 MHz crystals for precise timing - required for CAN bit timing accuracy and USB clock synchronization. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Analog Blocks | Four SC/CT blocks usable as PGA (gain ×0.25–×16), TIA (for photodiode current), mixer, or sample-and-hold - enables custom front-end signal conditioning without external components. |
| CapSense® Integration | Capacitive touch sensing on any GPIO with built-in IDACs and noise immunity algorithms - supports buttons, sliders, and proximity detection in automotive HMI. |
| Digital Filter Block (DFB) | 24-bit fixed-point FIR/IIR filter engine running at 67 MHz - performs real-time motor control loop filtering or audio preprocessing in firmware. |
| Secure Flash Programming | Hardware-based flash protection, read/write lock bits, and secure bootloader - prevents unauthorized firmware access in safety-critical ECUs. |
| Flexible Clocking | Internal IMO (3–62 MHz), crystal oscillator (4–25 MHz), PLL (up to 67 MHz), and 32.768-kHz RTC oscillator - allows dynamic clock scaling for power/performance trade-offs. |
Applications
| Automotive Body Control Module | Smart Sensor Node |
|---|---|
|
Use Scenario: Centralized control of door locks, window lifts, mirror adjustment, and interior lighting in modern vehicles. IC Role / Device Role / Timing Role: Main MCU managing CAN message arbitration, analog sensor acquisition (temperature, humidity), and PWM-driven motor actuation. Use Value: Integrated CAN 2.0b and 20-bit ADC eliminate discrete transceivers and external signal conditioners, reducing BOM count by ≥7 components per node. |
Use Scenario: Battery-powered tire pressure monitoring system (TPMS) or cabin air quality sensor with wireless telemetry. IC Role / Device Role / Timing Role: Low-power sensor fusion hub acquiring analog signals (pressure, CO₂, VOC), performing local filtering (DFB), and preparing data for RF transmission. Use Value: Hibernate mode at 200 nA extends coin-cell battery life beyond 5 years; CapSense® enables tamper detection on enclosure. |
| Infotainment Touch Interface | Electric Power Steering (EPS) Assist Controller |
|
Use Scenario: Capacitive touch overlay for center console displays with gesture recognition and haptic feedback. IC Role / Device Role / Timing Role: Dedicated CapSense® controller interfacing with display driver and generating interrupt-driven touch events. Use Value: On-chip IDACs and noise rejection algorithms achieve >60 dB SNR in noisy automotive EMI environments - no external shielding required. |
Use Scenario: Secondary assist controller in EPS systems, monitoring torque sensor, motor current, and temperature for fail-safe torque blending. IC Role / Device Role / Timing Role: Real-time safety monitor sampling analog torque sensor (delta-sigma ADC) and comparing against primary MCU via CAN. Use Value: 95-ns comparators and hardware CRC enable sub-10 µs fault detection - meets ASIL-B diagnostic coverage requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon CY8C4146AZI-S433 | ARM Cortex-M0+ core, 128 KB flash, no CAN, USB only as device (no host), 12-bit SAR ADC (1 Msps) | Lacks CAN 2.0b and full USB host capability; better suited for non-automotive human interface or industrial control. | Select when ARM toolchain compatibility and higher CPU throughput outweigh need for automotive CAN and analog precision. |
| NXP S32K144HAT0MLHT | ARM Cortex-M4F core, 512 KB flash, CAN FD, 12-bit SAR ADC (2 Msps), no integrated CapSense® or programmable analog blocks | Targets ASIL-B functional safety with hardware safety mechanisms (ECC, lockstep); lacks configurable analog front-end. | Select when ISO 26262 ASIL-B certification and CAN FD bandwidth are mandatory, and external analog signal conditioning is acceptable. |
Compared with CY8C3866PVA-021, CY8C4146AZI-S433 trades CAN/USB peripheral integration for ARM ecosystem alignment, while S32K144HAT0MLHT replaces PSoC's analog configurability with certified safety features - making CY8C3866PVA-021 uniquely suited for cost-sensitive, mixed-signal automotive nodes requiring both precision sensing and protocol offload.
Availability
CY8C3866PVA-021 is available at Aetrix Electronics and suitable for automotive body control modules, smart sensor nodes, infotainment touch interfaces, and electric power steering assist controllers requiring stable component supply and long-term lifecycle support.
Supply support for CY8C3866PVA-021 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 microcontrollers, and security solutions.
CY8C3866PVA-021 belongs to the PSoC® 3 automotive family - designed specifically for AEC-Q100-compliant embedded control applications requiring integrated analog signal acquisition, digital protocol handling (CAN/USB), and field-upgradable firmware in resource-constrained environments.
FAQ
Is CY8C3866PVA-021 pin-compatible with other CY8C38 family members?
Yes - CY8C3866PVA-021 uses the 100-pin TQFP package shared across CY8C3866 variants. Pin functions are consistent per datasheet Table 2-1, though peripheral enablement (e.g., USB, CAN) depends on specific part number configuration. No PCB redesign is needed when migrating within the same package option.
Does CY8C3866PVA-021 support bootloading over CAN?
Yes - the device supports bootloader programming via CAN using the PSoC Creator™ Bootloader Component. Firmware updates can be triggered by CAN messages containing address/data payloads, with CRC-16 validation and flash write protection enforced in hardware.
What is the maximum operating frequency of the internal main oscillator (IMO)?
The internal main oscillator (IMO) operates from 3 MHz to 62 MHz across the full temperature and voltage range (–40 °C to +85 °C, 1.71–5.5 V). At 62 MHz, it achieves ±2% accuracy; tighter tolerance requires external crystal or PLL multiplication.
Can the delta-sigma ADC measure below-ground signals?
No - the delta-sigma ADC requires VREF ≥ 1.024 V and accepts inputs from VSSA to VDDA. For bipolar or negative-voltage signals, external level-shifting circuitry (e.g., opamp summing amplifier) is required before ADC input.
CY8C3866PVA-021 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Series:
- PSOC™ 3 CY8C38xx
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 67MHz
- Connectivity:
- EBI/EMI, I2C, LINbus, SPI, UART/USART, USB
- Peripherals:
- CapSense, DMA, POR, PWM, WDT
- Number of I/O:
- 25
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C3866PVA-021 FAQ
1.How can I place an order for CY8C3866PVA-021 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3866PVA-021 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 CY8C3866PVA-021 reliable?
The price and inventory of CY8C3866PVA-021 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3866PVA-021 is usually 5 days.
3.What payment methods are accepted for CY8C3866PVA-021?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3866PVA-021 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3866PVA-021?
CY8C3866PVA-021 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3866PVA-021 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 CY8C3866PVA-021?
For technical support, including CY8C3866PVA-021 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3866PVA-021 requirements.
6.How does Aetrix verify that CY8C3866PVA-021 is sourced from the original manufacturer or authorized distributors?
All CY8C3866PVA-021 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 CY8C3866PVA-021 meets industry standards.
7.What is the process for return or replacement of CY8C3866PVA-021?
All CY8C3866PVA-021 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3866PVA-021, 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 CY8C3866PVA-021 part is unused and in its original packaging.
Return procedure for CY8C3866PVA-021:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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