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Infineon Technologies CY8C3665AXI-016T
- Part No.:
- CY8C3665AXI-016T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
CY8C3665AXI-016T.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,815
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Product details
Overview
CY8C3665AXI-016T 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, 24-channel DMA, and configurable analog/digital peripherals including CAN 2.0b, USB 2.0 FS, and delta-sigma ADC. It operates from 0.5 V to 5.5 V, supports –40 °C to +85 °C industrial temperature range, and is packaged in 48-pin SSOP for embedded control in sensor fusion and industrial HMI systems.
For engineers reviewing the CY8C3665AXI-016T datasheet, CY8C3665AXI-016T pinout, CY8C3665AXI-016T application, or CY8C3665AXI-016T equivalent, key selection criteria include its 67-MHz CPU clock capability, 12-bit delta-sigma ADC with 66-dB SINAD, 16-receive/8-transmit CAN buffers, USBIO support, and CapSense®-enabled GPIO routing - all validated for real-time mixed-signal control.
Technical Context
The CY8C3665AXI-016T implements a single-cycle 8051 microcontroller core with multiply/divide instructions, 3–62 MHz internal oscillator, and PLL-based up to 67 MHz system clock. Its digital subsystem uses 24 universal digital blocks (UDBs) with programmable logic and state machines, enabling custom peripherals like LIN, PRS, CRC, and quadrature decoders via PSoC Creator™.
Analog functionality centers on a 1.024 V ±0.1% internal reference, 8–12-bit delta-sigma ADC (192 kSPS, ±1 LSB INL/DNL), four opamps (25 mA drive), four comparators (95 ns), and four DACs (8-bit IDAC/VDAC). All 62 GPIOs support analog routing, CapSense®, LCD direct drive (46×16), and configurable I/O voltage domains (1.2–5.5 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051 running up to 67 MHz - enables deterministic real-time control with <100 ns instruction latency. |
| Flash Memory | 64 KB with 100,000 write cycles and 20-year retention - supports field firmware updates without endurance risk. |
| ADC Resolution | Configurable 8–12-bit delta-sigma ADC with 66 dB SINAD at 12-bit mode - delivers precision for thermocouple, bridge sensor, and medical signal acquisition. |
| CAN Interface | Full CAN 2.0b compliant with 16 Rx / 8 Tx buffers - enables robust automotive-grade communication without external controller. |
| USB Interface | Full-Speed USB 2.0 (12 Mbps) using internal oscillator - eliminates need for external crystal while maintaining USB compliance. |
| Operating Voltage | 0.5 V to 5.5 V supply range with integrated boost regulator - supports battery-powered designs down to coin-cell voltages. |
| Temperature Range | –40 °C to +85 °C industrial grade - qualified for deployment in factory automation and outdoor metering environments. |
Pinout & Package
Package: 48-pin SSOP (Small Outline Integrated Circuit), 0.635 mm pitch, body size 15.4 mm × 7.6 mm, RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core power supply | Supplies 1.71–5.5 V to digital logic and CPU; decoupling required per datasheet Section 11.3. |
| VDDA | Analog power supply | Separate 1.71–5.5 V rail for ADC, DAC, opamps - isolation prevents digital noise coupling into analog paths. |
| P0[0]–P0[7] | General-purpose I/O bank 0 | Supports CapSense®, analog mux input, comparator input, and USBIO functions depending on configuration. |
| P1[0]–P1[7] | General-purpose I/O bank 1 | Configurable as SIO (25 mA sink), LCD segment driver, or analog output - enables direct panel interface. |
| XTAL_IN / XTAL_OUT | Crystal oscillator terminals | Accepts 4–33 MHz crystal for high-accuracy timing; optional when using internal IMO or PLL for USB clock generation. |
| TST / TDI / TDO / TCK | JTAG debug interface | 4-wire boundary scan and programming path - supports full-speed debugging, breakpoints, and trace buffer access. |
| USB_DP / USB_DM | USB differential pair | Integrated USB PHY with internal termination - no external resistors needed for Full-Speed compliance. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable UDB Array | 24 universal digital blocks enable hardware-accelerated peripherals (e.g., custom PWM sequencers or CRC engines) without CPU overhead. |
| Digital Filter Block (DFB) | 24-bit fixed-point DFB operating at 67 MHz - implements FIR/IIR filters for real-time vibration analysis or motor current harmonics suppression. |
| CapSense® on All GPIO | Self- and mutual-capacitance sensing supported on any GPIO - eliminates dedicated touch controller IC in HMI designs. |
| Low-Power Hibernate Mode | 200 nA with RAM retention - enables multi-year battery life in wireless sensor nodes with periodic wake-up events. |
| Programmable Clock Tree | Multiple independent clock sources (IMO, ILO, XOSC, PLL) with dynamic switching - allows precise power/performance trade-offs per subsystem. |
Applications
| Industrial Motor Control | Medical Sensor Hub |
|---|---|
|
Use Scenario: Closed-loop BLDC motor control with current sensing, position feedback, and thermal monitoring in compact drives. IC Role / Device Role / Timing Role: Central controller executing FOC algorithm, sampling dual-shunt currents via 12-bit ADC, generating 16-bit PWM with dead-time insertion, and communicating status over CAN. Use Value: On-chip DFB processes current harmonics in real time; integrated CAN and USB reduce BOM count by two interface ICs. |
Use Scenario: Portable patient monitor aggregating ECG, SpO₂, and temperature signals with local display and Bluetooth gateway interface. IC Role / Device Role / Timing Role: Signal acquisition hub digitizing analog biosignals via delta-sigma ADC, driving OLED/LCD via GPIO, and managing secure data logging to internal EEPROM. Use Value: 0.1% voltage reference ensures clinical-grade ADC accuracy; CapSense® enables intuitive touch UI without overlay sensors. |
| Smart Building HVAC Controller | Automotive Body Control Module |
|
Use Scenario: Wall-mounted thermostat with ambient/humidity sensing, relay actuation, and Zigbee/Wi-Fi coexistence via UART bridging. IC Role / Device Role / Timing Role: System manager handling sensor polling, PID loop execution, nonvolatile settings storage, and serial protocol translation between wireless module and local peripherals. Use Value: 2 KB EEPROM retains calibration and user preferences across power cycles; low-voltage operation extends battery backup duration. |
Use Scenario: Door module controlling window lift, mirror fold, and interior lighting with LIN communication to central ECU. IC Role / Device Role / Timing Role: Local node executing LIN slave protocol, driving H-bridge drivers via PWM, monitoring switch inputs with debounced GPIO interrupts, and detecting overcurrent via analog comparator. Use Value: Integrated LIN peripheral eliminates external transceiver; 25 mA opamp outputs directly condition hall-effect position sensor signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F303CBT6 | ARM Cortex-M4F core, 72 MHz, 128 KB flash, 16 KB SRAM, no integrated CAN transceiver or CapSense® | Requires external CAN PHY and touch controller; superior floating-point performance but higher static power | Select when needing DSP acceleration or RTOS scalability beyond 8051 architecture. |
| MAX32660 | ARM Cortex-M4, 96 MHz, 256 KB flash, 96 KB SRAM, ultra-low-power sleep (1.5 µA), no CAN or USB | Lacks CAN/USB interfaces; optimized for wearable biosensing with integrated ADC and security accelerators | Select for battery-constrained wearables where CAN/USB are unnecessary and cryptographic operations are critical. |
Compared with STM32F303CBT6 and MAX32660, the CY8C3665AXI-016T uniquely combines CAN+USB+CapSense® in one die with sub-µA hibernate, making it optimal for cost-sensitive, mixed-interface industrial nodes requiring rapid analog/digital reconfiguration.
Availability
CY8C3665AXI-016T is available at Aetrix Electronics and suitable for industrial motor control, medical sensor hubs, smart building HVAC controllers, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for CY8C3665AXI-016T 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. Infineon is a global semiconductor leader focused on power systems, automotive electronics, and secure connectivity solutions.
The CY8C36 family belongs to Infineon's PSoC® 3 programmable SoC product line, designed specifically for highly integrated, low-power embedded control applications requiring flexible analog and digital peripheral configuration without hardware redesign.
FAQ
Does CY8C3665AXI-016T support USB device enumeration without an external crystal?
Yes. The device integrates a full-speed USB 2.0 PHY with internal oscillator trimming that meets USB specification timing requirements without an external crystal. Internal IMO accuracy is maintained via automatic calibration against the USB SOF packet, enabling reliable enumeration on host systems.
What is the maximum achievable resolution and sampling rate of the delta-sigma ADC?
The delta-sigma ADC achieves 12-bit resolution at 192 kSPS with 66 dB SINAD and ±1 LSB INL/DNL. At lower rates (e.g., 1 kSPS), effective resolution increases to 16 bits due to oversampling and digital filtering - verified in datasheet Section 11.5 under "Delta-Sigma ADC Electrical Characteristics".
Can all 62 GPIOs be used simultaneously for analog input acquisition?
No. While all 62 GPIOs are routed to the analog bus and can serve as analog inputs, simultaneous sampling is limited by the single delta-sigma ADC channel and multiplexer bandwidth. Up to 24 channels may be scanned in sequence using DMA-driven auto-scan mode, with typical settling time of 1.2 µs per channel.
Is the 200-nA hibernate mode validated across the full temperature range?
Yes. The 200-nA hibernate current is specified and tested from –40 °C to +85 °C per datasheet Section 11.2, Table 11-2. This includes retention of 8 KB SRAM and wake-up capability via RTC alarm or external interrupt, with typical wake-up latency of 3 µs.
CY8C3665AXI-016T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 100-LQFP
- Series:
- PSOC™ 3 CY8C36xx
- Packaging:
- Tape & Reel (TR)
- 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, 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 16x12b; D/A 4x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C3665AXI-016T FAQ
1.How can I place an order for CY8C3665AXI-016T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3665AXI-016T 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 CY8C3665AXI-016T reliable?
The price and inventory of CY8C3665AXI-016T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3665AXI-016T is usually 5 days.
3.What payment methods are accepted for CY8C3665AXI-016T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3665AXI-016T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3665AXI-016T?
CY8C3665AXI-016T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3665AXI-016T 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 CY8C3665AXI-016T?
For technical support, including CY8C3665AXI-016T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3665AXI-016T requirements.
6.How does Aetrix verify that CY8C3665AXI-016T is sourced from the original manufacturer or authorized distributors?
All CY8C3665AXI-016T 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 CY8C3665AXI-016T meets industry standards.
7.What is the process for return or replacement of CY8C3665AXI-016T?
All CY8C3665AXI-016T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3665AXI-016T, 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 CY8C3665AXI-016T part is unused and in its original packaging.
Return procedure for CY8C3665AXI-016T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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