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Infineon Technologies CY8C3866LTI-064
- Part No.:
- CY8C3866LTI-064
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
CY8C3866LTI-064.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,163
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Product details
Overview
CY8C3866LTI-064 from Infineon Technologies (acquired Cypress Semiconductor) is a programmable system-on-chip (PSoC® 3) integrating an 8051 CPU core, 64 KB flash, 8 KB SRAM, 2 KB EEPROM, and configurable analog/digital peripherals including a 20-bit delta-sigma ADC, four opamps, CAN 2.0b interface, and USB 2.0 FS PHY - deployed in industrial sensor hubs and medical data acquisition systems requiring mixed-signal reconfigurability.
For engineers reviewing the CY8C3866LTI-064 datasheet, CY8C3866LTI-064 pinout, CY8C3866LTI-064 application, or CY8C3866LTI-064 equivalent, key selection criteria include its 67 MHz max CPU clock, –40°C to +85°C industrial temperature rating, 48-pin LQFP package with 62 GPIOs, and support for CapSense®, LCD direct drive, and hardware-accelerated digital filtering via DFB.
Technical Context
The CY8C3866LTI-064 implements a single-cycle 8051 microcontroller core with AMBA AHB bus architecture, enabling deterministic real-time execution and high-bandwidth DMA transfers across its 24-channel PHUB. Its analog subsystem centers on a programmable delta-sigma ADC (8–20-bit resolution, up to 192 ksps) referenced to a 1.024 V ±0.1% internal voltage reference stable over –40°C to +85°C.
Digital flexibility derives from 24 Universal Digital Blocks (UDBs), each combining PLD logic and state machines to implement custom peripherals like LIN, PRS, CRC, or quadrature decoders - routed to any of 62 GPIOs via the Digital System Interconnect (DSI). The device integrates full-speed USB 2.0 and CAN 2.0b controllers with dedicated buffers (16 Rx / 8 Tx), both enabled in this variant per ordering code "064".
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051 running up to 67 MHz - enables deterministic real-time control without instruction pipelining overhead. |
| Flash Memory | 64 KB with 100,000 write cycles and 20-year data retention - supports field firmware updates and secure boot validation. |
| ADC Resolution | Configurable 8–20-bit delta-sigma ADC with 192 ksps (12-bit) or 48 ksps (16-bit) - delivers 84 dB SINAD at 16-bit for precision sensor digitization. |
| Operating Voltage | 0.5 V to 5.5 V supply range with integrated boost regulator - allows direct battery operation down to single-cell Li-ion or coin cell. |
| I/O Count | 62 GPIOs + 8 SIOs + 2 USBIOs in 48-pin LQFP - provides full pin routability to analog/digital peripherals and supports CapSense® on any GPIO. |
| Communication Interfaces | Full-speed USB 2.0 (12 Mbps), CAN 2.0b (16 Rx/8 Tx buffers), I²C multimaster - enables embedded connectivity without external transceivers. |
| Temperature Range | –40°C to +85°C industrial grade - qualified for deployment in motor control enclosures and portable diagnostic equipment. |
Pinout & Package
Package: 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core power supply | 1.71–5.5 V analog/digital supply; decoupling required within 10 mm of pin for ADC stability. |
| VDDA | Analog power supply | Separate 1.71–5.5 V rail for analog subsystem; must be filtered independently to maintain 84 dB SINAD. |
| P0[0]–P0[7] | General-purpose I/O bank 0 | Supports CapSense®, analog mux input, or digital peripheral routing - all pins configurable as strong, open-drain, or high-Z. |
| USB_DP / USB_DM | USB 2.0 differential pair | Integrated full-speed PHY; requires 27-Ω series resistors and 1.5-kΩ pull-up on DP for host enumeration. |
| CAN_TX / CAN_RX | CAN 2.0b physical layer interface | Direct connection to external CAN transceiver (e.g., TJA1042); no level-shifting needed for 3.3 V logic. |
| XRES | External reset input | Active-low asynchronous reset; internal pull-up ensures reliable POR when left unconnected. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Delta-Sigma ADC | 8–20-bit resolution with programmable gain (×0.25 to ×16) and 192 ksps sample rate - eliminates external signal conditioning for thermocouple or strain gauge inputs. |
| Digital Filter Block (DFB) | 24-bit fixed-point FIR/IIR accelerator with DMA-triggered operation - offloads CPU for real-time noise suppression in ECG or vibration monitoring. |
| CapSense® on Any GPIO | Self- and mutual-capacitance sensing with <1 pF resolution using internal IDACs - enables touch interfaces without dedicated controller ICs. |
| Hardware CAN + USB Coexistence | Dedicated CAN 2.0b controller and full-speed USB PHY share no resource contention - supports dual-interface telemetry in industrial gateways. |
| Low-Power Hibernate Mode | 200 nA with RAM retention and wake-on-pin interrupt - extends battery life in wireless sensor nodes beyond 5 years on CR2032. |
Applications
| Industrial Motor Control | Portable Medical Instrumentation |
|---|---|
|
Use Scenario: Real-time current/voltage sampling and PWM generation for BLDC motor commutation in compact drives. IC Role / Device Role / Timing Role: PSoC 3 acts as system controller, ADC front-end, and PWM generator - synchronizing analog capture with 16-bit timer outputs. Use Value: Integrated 16-bit PWM blocks and 192 ksps ADC eliminate external ADC and gate driver ICs, reducing BOM count by 3 components. |
Use Scenario: Battery-powered ECG acquisition with on-chip filtering, lead-off detection, and USB data streaming. IC Role / Device Role / Timing Role: Performs analog front-end amplification, delta-sigma conversion, DFB-based notch filtering, and USB packetization - all in one die. Use Value: Hardware-accelerated DFB reduces CPU load to <5%, enabling low-power Cortex-M0+ co-processor use for Bluetooth LE stack. |
| Automotive Body Electronics | Smart Home Sensor Hub |
|
Use Scenario: Door module managing window lift, mirror adjustment, and interior lighting with LIN/CAN gateway functionality. IC Role / Device Role / Timing Role: Serves as LIN slave and CAN master simultaneously - translating commands between sub-bus networks. Use Value: Dual-protocol support avoids separate LIN transceiver and CAN controller, cutting PCB area by 28 mm². |
Use Scenario: Multi-sensor node aggregating temperature, humidity, motion, and ambient light with local decision logic. IC Role / Device Role / Timing Role: Hosts CapSense® buttons, sigma-delta ADC for analog sensors, and USB/UART for configuration - no external MCU needed. Use Value: On-chip EEPROM stores calibration coefficients per sensor, enabling field-replaceable modules without firmware reflash. |
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 |
|---|---|---|---|
| STM32F303VCT6 | ARM Cortex-M4F core, 256 KB flash, 48 MHz max, 12-bit SAR ADC (5 MSPS), no integrated CAN transceiver PHY | Lacks native CAN PHY and CapSense®; requires external transceiver and touch controller for equivalent functionality | Select when ARM toolchain familiarity and floating-point math acceleration outweigh mixed-signal integration needs. |
| PIC18F87J90-I/PT | 8-bit PIC core, 128 KB flash, 40 MHz, 12-bit SAR ADC (1 MSPS), no USB or DFB, limited GPIO routing flexibility | No hardware USB, no digital filter block, no CapSense® - mandates external components for comparable signal chain depth | Choose for cost-sensitive legacy 8-bit designs where USB/CAN coexistence and analog configurability are non-critical. |
Compared with STM32F303VCT6 and PIC18F87J90-I/PT, CY8C3866LTI-064 uniquely combines USB + CAN PHYs, 20-bit delta-sigma ADC, and DFB in a single 48-pin LQFP - reducing component count and layout complexity for sensor-to-cloud edge nodes.
Availability
CY8C3866LTI-064 is available at Aetrix Electronics and suitable for industrial motor control, portable medical instrumentation, automotive body electronics, and smart home sensor hub designs requiring stable component supply and long-term lifecycle support.
Supply support for CY8C3866LTI-064 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 now owns the PSoC® portfolio - a leader in programmable mixed-signal SoCs with >20 years of analog IP heritage and automotive-grade qualification.
The CY8C38 family targets reconfigurable embedded systems demanding analog precision, digital flexibility, and protocol integration - specifically designed for sensor fusion, human-machine interface, and edge intelligence applications.
FAQ
Does CY8C3866LTI-064 support USB device enumeration without external crystal?
Yes. The device integrates a factory-trimmed 48 MHz internal main oscillator (IMO) with ±2% accuracy over temperature and voltage, sufficient for full-speed USB 2.0 device enumeration without an external crystal. USB suspend/resume timing meets USB-IF specification using the IMO alone.
Can the 20-bit delta-sigma ADC operate concurrently with the DFB for real-time filtering?
Yes. The ADC output connects directly to the Digital Filter Block (DFB) via hardware DMA channels. This enables continuous 48 ksps (16-bit) data flow into the DFB for FIR/IIR filtering without CPU intervention - verified in Cypress Application Note AN76359.
What is the maximum sink current capability on SIO pins?
SIO pins support 25 mA sink current per pin at VDD = 3.3 V and TA = 25°C, as specified in Section 11.4 of the CY8C38 Family Datasheet (Rev. *Q). This enables direct LED driving or interfacing with higher-current external logic without buffer ICs.
Is CapSense® supported on all 62 GPIOs, including those shared with analog peripherals?
Yes - CapSense® is supported on all GPIOs, but Cypress explicitly advises against using GPIOs with opamp outputs (e.g., P0[0]–P0[3] when configured as opamp outputs) for CapSense® due to noise coupling. Dedicated CapSense®-optimized pins (e.g., P0[4]–P0[7]) deliver best SNR.
CY8C3866LTI-064 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-VFQFN Exposed Pad
- 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, 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:
CY8C3866LTI-064 FAQ
1.How can I place an order for CY8C3866LTI-064 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3866LTI-064 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 CY8C3866LTI-064 reliable?
The price and inventory of CY8C3866LTI-064 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3866LTI-064 is usually 5 days.
3.What payment methods are accepted for CY8C3866LTI-064?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3866LTI-064 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3866LTI-064?
CY8C3866LTI-064 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3866LTI-064 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 CY8C3866LTI-064?
For technical support, including CY8C3866LTI-064 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3866LTI-064 requirements.
6.How does Aetrix verify that CY8C3866LTI-064 is sourced from the original manufacturer or authorized distributors?
All CY8C3866LTI-064 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 CY8C3866LTI-064 meets industry standards.
7.What is the process for return or replacement of CY8C3866LTI-064?
All CY8C3866LTI-064 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3866LTI-064, 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 CY8C3866LTI-064 part is unused and in its original packaging.
Return procedure for CY8C3866LTI-064:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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