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Infineon Technologies CY8C3866PVI-021
- Part No.:
- CY8C3866PVI-021
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
CY8C3866PVI-021.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:506
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Product details
Overview
CY8C3866PVI-021 from Infineon Technologies (formerly Cypress) is a programmable 8-bit PSoC® 3 system-on-chip integrating an 8051 CPU, configurable analog/digital peripherals, 64 KB flash, 8 KB RAM, and full CAN 2.0b interface. It operates from 1.71–5.5 V at up to 67 MHz, supports CapSense® for touch sensing, and delivers ultra-low-power hibernate mode (200 nA with RAM retention). Used in industrial HMI, medical sensor nodes, and automotive body control modules requiring mixed-signal integration and field-upgradable firmware.
For engineers reviewing the CY8C3866PVI-021 datasheet, CY8C3866PVI-021 pinout, CY8C3866PVI-021 application, or CY8C3866PVI-021 equivalent, key selection criteria include its 72-pin TQFP package, USB 2.0 Full-Speed peripheral support, 4-channel delta-sigma ADC (up to 20-bit), integrated DFB digital filter processor, and dual-clock domain routing for mixed-signal timing isolation.
Technical Context
The CY8C3866PVI-021 implements a hardened 8051 core with DMA controller and 24-bit digital filter block (DFB), enabling real-time signal processing without CPU intervention. Its analog subsystem includes four opamps, four comparators, and programmable SC/CT blocks supporting PGA, TIA, and mixer configurations - all routable to any of 62 GPIOs via flexible interconnect.
Digital functionality is built on 24 universal digital blocks (UDBs), each combining PAL logic and state machines to synthesize UART, SPI, LIN, CRC, quadrature decoders, or custom logic. The device integrates dedicated hardware for USB 2.0 FS (TID#40770053 certified) and full CAN 2.0b with 16 Rx/8 Tx buffers - both accessible through the same I/O routing fabric.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 8-bit 8051 running up to 67 MHz; enables deterministic real-time control with 32 interrupt inputs and PHUB-based DMA for zero-CPU peripheral transfers. |
| Memory | 64 KB flash (with ECC support), 8 KB SRAM, 2 KB EEPROM; allows secure firmware storage, runtime data logging, and bootloader-resident updates. |
| Analog ADC | Configurable delta-sigma ADC, 8–20-bit resolution, up to 1 MSPS; supports high-precision sensor acquisition with programmable gain and internal 1.024 V reference. |
| Digital Peripherals | Four 16-bit TCPWM blocks, I²C (1 Mbps), USB 2.0 FS (12 Mbps), full CAN 2.0b (16 Rx/8 Tx), and 24 UDBs for synthesizing custom interfaces or logic. |
| Power Modes | Active (1.2 mA @ 6 MHz), sleep (1 µA), hibernate (200 nA with RAM retention); enables battery-powered operation for >10-year sensor node lifetime. |
| I/O System | 72-pin TQFP package with 62 GPIOs, eight SIO pins (25 mA sink, overvoltage tolerant), USBIO pins, and full analog/digital peripheral routing to any pin. |
| Clock Sources | Internal oscillators (3–62 MHz ±1%, 33/100 kHz low-power), external crystal (4–25 MHz), PLL (up to 67 MHz), and 32.768-kHz watch crystal; supports multi-domain clocking for timing-critical subsystems. |
Pinout & Package
Package: 72-pin TQFP (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant, lead-free, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDD | Power supply domains | Separate analog (VDDA) and digital (VDDD) supplies enable noise isolation; VDD powers I/O and core; supports 1.71–5.5 V operation across domains. |
| P0[0]–P0[7], P1[0]–P1[7], etc. | General-purpose I/O | All 62 GPIOs support analog/digital peripheral routing, CapSense®, LCD segment drive (up to 46×16), and configurable input thresholds/output voltages. |
| SIO0–SIO7 | Special I/O | Eight high-drive pins with 25 mA sink capability, hot-swap tolerance, overvoltage protection (up to 6.5 V), and comparator input function - ideal for industrial bus interfacing. |
| USB_DP / USB_DM | USB 2.0 Full-Speed interface | Dedicated differential pair compliant with USB 2.0 FS PHY spec; supports enumeration, suspend/resume, and 12 Mbps data transfer without external transceiver. |
| CAN_TX / CAN_RX | CAN 2.0b physical layer interface | Direct connection to external CAN transceiver; supports bit rates up to 1 Mbps and full protocol stack offload via hardware message buffers and filtering. |
| XRES, XIN, XOUT | Reset and crystal oscillator | External reset input (active-low), 4–25 MHz crystal connections for precise timing; internal oscillator provides fallback during crystal startup or failure. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Blocks | Four SC/CT blocks configured as PGA, TIA, mixer, or sample-and-hold - enabling single-chip front-end design for current/voltage sensing and signal conditioning. |
| Digital Filter Block (DFB) | 24-bit fixed-point 64-tap FIR/IIR filter engine with independent clocking; processes sensor data in real time while CPU handles higher-layer tasks. |
| CapSense® Support | Hardware-accelerated capacitive touch sensing on up to 62 GPIOs; eliminates external touch controllers and reduces BOM cost in HMI applications. |
| Flexible Clock Routing | 12 programmable clock dividers routed to any peripheral or I/O; allows independent timing domains for ADC sampling, PWM generation, and communication interfaces. |
| Secure Bootloader | Factory-programmed ROM bootloader supporting firmware update via I²C, SPI, UART, or USB; includes flash write protection and signature verification options. |
Applications
| Industrial HMI Panel | Medical Vital Sign Monitor |
|---|---|
Use Scenario: Touch-enabled control panel for PLCs and motor drives with LED indicators and status feedback. IC Role / Device Role / Timing Role: Central controller managing CapSense® buttons, analog sensor inputs (temperature, current), PWM-driven LEDs, and CAN bus communication with main controller. Use Value: Single-chip integration eliminates discrete opamps, comparators, and microcontroller + touch controller combo - reducing PCB area by 35% and component count by 12. |
Use Scenario: Portable pulse oximeter acquiring photodiode signals, driving OLED display, and transmitting data via USB to host PC. IC Role / Device Role / Timing Role: Signal acquisition hub performing synchronized dual-channel delta-sigma ADC conversion, real-time DFB-based ambient light cancellation, and USB HID-class data streaming. Use Value: On-chip 20-bit ADC + DFB enables >95 dB SNR in optical measurement path; eliminates external precision ADC and DSP, cutting power by 40% vs. dual-chip solution. |
| Automotive Body Control Module | Smart Home Sensor Hub |
Use Scenario: Door module controlling window lift, mirror adjustment, and interior lighting with LIN and CAN connectivity. IC Role / Device Role / Timing Role: Mixed-signal MCU executing LIN slave protocol, generating multi-phase PWM for motor control, monitoring hall-effect sensors, and relaying diagnostics over CAN. Use Value: Integrated LIN transceiver support (via GPIO + firmware) and CAN controller with hardware message filtering reduce external IC count by 3 and improve EMI robustness in vehicle harness environments. |
Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and VOC levels, then reporting wirelessly via BLE gateway. IC Role / Device Role / Timing Role: Ultra-low-power sensor aggregator using hibernate mode between readings, waking on timer or external interrupt to acquire analog sensor data and store in SRAM before transmission. Use Value: 200 nA hibernate current with full RAM retention enables 7+ years of operation on CR2032 coin cell - validated per JEDEC JESD22-A103 storage life spec. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C3866AXI-021 | Same die, 100-pin TQFP package; adds 10 extra GPIOs and two additional analog routing channels. | Required when >62 GPIOs or additional analog mux paths are needed for complex sensor fusion designs. | Select only if board layout accommodates larger footprint and additional I/O routing complexity is justified. |
| CY8C5868LTI-LP097 | 32-bit ARM Cortex-M3 core, 256 KB flash, higher clock (80 MHz), but no native CAN; requires external transceiver and software stack. | Better for compute-intensive firmware (e.g., local ML inference), but lacks integrated CAN hardware and consumes more active power. | Choose for future-proofing with ARM ecosystem and higher throughput needs - not for CAN-centric or ultra-low-power designs. |
Compared with CY8C3866AXI-021, the PVI-021 offers identical functionality in a smaller 72-pin TQFP, saving board space and cost where I/O count is sufficient; versus CY8C5868LTI-LP097, it delivers lower system-level power and native CAN hardware - critical for automotive and industrial edge nodes.
Availability
CY8C3866PVI-021 is available at Aetrix Electronics and suitable for industrial HMI panels, medical vital sign monitors, automotive body control modules, and smart home sensor hubs requiring stable component supply, long-term lifecycle support, and qualified automotive-grade sourcing.
Supply support for CY8C3866PVI-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 AG is a German semiconductor manufacturer specializing in power management, automotive MCUs, and security solutions, with global R&D and manufacturing infrastructure.
CY8C3866PVI-021 belongs to the PSoC® 3 family - designed specifically for ultra-low-power, highly integrated embedded control in resource-constrained environments where analog/digital co-design, field-upgradable firmware, and mixed-signal flexibility are essential.
FAQ
Does CY8C3866PVI-021 support USB device enumeration without external components?
Yes. The device integrates a USB 2.0 Full-Speed physical layer compliant with TID#40770053 certification. It requires only two 1.5 kΩ pull-up resistors on D+ and no external transceiver. Internal oscillator accuracy (±1.5% over temperature) meets USB specification for device enumeration and data transfer at 12 Mbps.
What is the maximum achievable resolution and sampling rate for the delta-sigma ADC?
The delta-sigma ADC supports 8–20-bit resolution programmatically. At 20-bit, maximum sampling rate is 125 ksps; at 16-bit, it reaches 1 MSPS. Oversampling and digital filtering are handled in hardware, and results are DMA-accessible to minimize CPU load during continuous acquisition.
Can the DFB (Digital Filter Block) operate independently while the CPU is in hibernate mode?
No. The DFB requires clocking from the main system clock domain and cannot run during hibernate mode. However, it can operate in sleep mode (1 µA) with selected clocks enabled, allowing background filtering while CPU remains halted - useful for low-latency sensor preprocessing.
Is CapSense® functionality supported on all GPIO pins, including those used for analog peripherals?
Yes. All 62 GPIOs support CapSense® scanning, including pins simultaneously assigned to analog functions like ADC input or opamp output. PSoC Creator automatically manages time-multiplexed resource allocation and provides hardware-accelerated scan sequencing with <10 µs per sensor.
CY8C3866PVI-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, LCD, 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:
CY8C3866PVI-021 FAQ
1.How can I place an order for CY8C3866PVI-021 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3866PVI-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 CY8C3866PVI-021 reliable?
The price and inventory of CY8C3866PVI-021 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3866PVI-021 is usually 5 days.
3.What payment methods are accepted for CY8C3866PVI-021?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3866PVI-021 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3866PVI-021?
CY8C3866PVI-021 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3866PVI-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 CY8C3866PVI-021?
For technical support, including CY8C3866PVI-021 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3866PVI-021 requirements.
6.How does Aetrix verify that CY8C3866PVI-021 is sourced from the original manufacturer or authorized distributors?
All CY8C3866PVI-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 CY8C3866PVI-021 meets industry standards.
7.What is the process for return or replacement of CY8C3866PVI-021?
All CY8C3866PVI-021 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3866PVI-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 CY8C3866PVI-021 part is unused and in its original packaging.
Return procedure for CY8C3866PVI-021:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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