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Infineon Technologies CY8C3665AXI-016
- Part No.:
- CY8C3665AXI-016
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
CY8C3665AXI-016.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,130
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Product details
Overview
CY8C3665AXI-016 from 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 delta-sigma ADC (12-bit, 192 kSPS), four opamps, four comparators, and full CAN 2.0b interface - deployed in industrial sensor hubs and motor control edge nodes.
For engineers reviewing the CY8C3665AXI-016 datasheet, CY8C3665AXI-016 pinout, CY8C3665AXI-016 application, or CY8C3665AXI-016 equivalent, key selection criteria include its 67-MHz CPU clock, –40 °C to +85 °C industrial temperature range, 48-pin SSOP package, USB 2.0 FS support, and CapSense®-enabled GPIO routing for touch HMI integration.
Technical Context
The CY8C3665AXI-016 implements a single-cycle 8051 microcontroller core with multiply/divide instructions and AMBA AHB bus architecture, enabling deterministic real-time execution across mixed-signal workloads. Its digital subsystem uses 24 universal digital blocks (UDBs) to implement custom logic, timers, PWMs, I2C, SPI, LIN, and quadrature decoders without external components.
Analog signal processing is anchored by a 1.024 V ±0.1% internal reference and a configurable delta-sigma ADC (8–12-bit, 192 kSPS, 66 dB SINAD), supported by a 67-MHz 24-bit DFB for FIR/IIR filtering and four SC/CT analog blocks usable as PGA, TIA, or mixer - all routable to any of 62 GPIOs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051 running up to 67 MHz; enables deterministic real-time control loops with <1 µs interrupt latency. |
| Flash Memory | 64 KB program flash with 100,000 write cycles and 20-year data retention; supports secure firmware updates and bootloader over USB/I2C. |
| ADC Performance | Configurable delta-sigma ADC: 12-bit mode, 192 kSPS, ±1 LSB INL/DNL, 66 dB SINAD; suitable for precision thermocouple and strain gauge acquisition. |
| Digital Peripherals | Full CAN 2.0b (16 Rx/8 Tx buffers), USB 2.0 Full-Speed (12 Mbps), 4× 16-bit timer/PWM, and 24 UDBs for custom logic synthesis. |
| Analog Resources | 4× rail-to-rail opamps (25 mA drive), 4× comparators (95 ns response), 4× IDAC/VDAC (8-bit, 8 Msps/1 Msps), and CapSense® on all GPIOs. |
| Power Management | Operating voltage 0.5–5.5 V; 1 µA sleep mode with RTC/LVD interrupt; 200 nA hibernate with RAM retention - optimized for battery-powered edge nodes. |
| Package & Temp | 48-pin SSOP, –40 °C to +85 °C industrial grade; validated for long-lifecycle deployment in factory automation and medical devices. |
Pinout & Package
Package: 48-pin SSOP (Small Outline Integrated Circuit), 0.635 mm pitch, body size 15.4 × 7.5 mm, JEDEC MS-012AC compliant.
| 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 layout guidelines. |
| VDDA | Analog power supply | Separate 1.71–5.5 V rail for ADC, DAC, opamps; isolation prevents digital noise coupling into analog paths. |
| XRES | Active-low reset input | Asynchronous reset pin; pulled high internally; external RC or supervisor IC ensures reliable power-on reset. |
| P0[0]–P0[7] | General-purpose I/O | Configurable as GPIO, analog input, CapSense electrode, or USBIO; supports Schmitt-trigger inputs and programmable drive strength. |
| P1[0]–P1[7] | General-purpose I/O | Same routing flexibility as P0; can drive LCD segments (up to 46×16) or serve as SIO with 25 mA sink capability. |
| USB_DP / USB_DM | USB 2.0 differential pair | Internal PHY enables Full-Speed USB without external transceiver; requires 27-Ω series resistors and proper PCB impedance control. |
| CAN_TX / CAN_RX | CAN 2.0b physical interface | Direct connection to external CAN transceiver; supports bit rates up to 1 Mbps with integrated protocol engine and message buffering. |
| XTAL_IN / XTAL_OUT | Crystal oscillator terminals | Supports 4–33 MHz crystals for precise timing; optional 32.768 kHz watch crystal for RTC operation. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Analog Subsystem | Four SC/CT blocks reconfigurable as PGA, TIA, mixer, or sample-and-hold - eliminates discrete analog front-end components in sensor interfaces. |
| CapSense® on All GPIOs | Self- and mutual-capacitance sensing supported on every GPIO without dedicated pins - enables flexible touch button/slider/layout design in space-constrained HMI. |
| Digital Filter Block (DFB) | 67-MHz 24-bit fixed-point engine for real-time FIR/IIR filtering; processes ADC output via DMA, offloading CPU and reducing firmware complexity. |
| Universal Digital Blocks (UDBs) | 24 fast, low-power PLD-based logic units with state machines - implement custom protocols (e.g., proprietary serial bus) or augment standard peripherals like UART with hardware flow control. |
| Multi-Domain I/O Voltage | Four independent I/O voltage domains (1.2–5.5 V) allow direct interfacing with mixed-voltage peripherals (e.g., 1.8-V sensors, 3.3-V logic, 5-V actuators) without level shifters. |
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 algorithms, acquiring analog phase currents via delta-sigma ADC, generating PWM gate signals, and communicating status via CAN bus. Use Value: Integrates ADC, opamps, comparators, PWM, and CAN in one die - reduces BOM count by 7+ discrete components and eliminates interconnect noise in high-dV/dt environments. | Use Scenario: Multi-parameter patient monitor aggregating ECG, temperature, SpO₂, and respiration signals at bedside. IC Role / Device Role / Timing Role: Signal acquisition hub digitizing analog biosignals, performing baseline correction and filtering via DFB, storing calibrated data in EEPROM, and transmitting over USB to host PC. Use Value: 12-bit ADC with <100 µV offset and 66 dB SINAD meets IEC 60601-2-27 low-noise requirements; CapSense® enables touch-based UI without mechanical buttons. |
| Smart Home Touch Interface | Automated Test Equipment (ATE) |
Use Scenario: Wall-mounted thermostat with capacitive touch keys, ambient light/temperature sensing, and HVAC relay control. IC Role / Device Role / Timing Role: Human-machine interface processor managing CapSense® buttons, driving LCD segments, reading thermistor/photodiode analog inputs, and controlling solid-state relays via GPIO. Use Value: Single-chip solution replaces MCU + touch controller + LCD driver + analog front-end - cuts PCB area by >40% and simplifies EMC compliance. | Use Scenario: Modular benchtop instrument performing automated calibration of analog sensors using precision voltage/current sourcing and measurement. IC Role / Device Role / Timing Role: Precision stimulus generator and measurement engine using VDAC/IDAC for excitation, delta-sigma ADC for readback, and DFB for real-time error compensation. Use Value: On-chip 1.024 V ±0.1% reference and <0.2% gain error enable traceable calibration without external references; EEPROM stores sensor-specific coefficients. |
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 |
|---|---|---|---|
| Infineon XMC4500-F100K1024 AC | 32-bit ARM Cortex-M4F core, 1024 KB flash, no integrated CapSense® or delta-sigma ADC; relies on SAR ADC (12-bit, 2.5 MSPS) and external touch controller. | Better suited for high-throughput motor control with FPU and EtherCAT; lacks native capacitive touch and ultra-low-power hibernate modes. | Select when floating-point math, Ethernet, or higher flash density outweighs need for integrated analog UX features. |
| Microchip PIC18F87J90 | 8-bit PIC core, 128 KB flash, 4 KB RAM, no USB/CAN; includes 12-bit SAR ADC (1 MSPS) and CTMU for touch, but no DFB or programmable analog blocks. | Lower cost for basic sensor polling and relay control; lacks USB, CAN, and real-time filtering capability for streaming sensor data. | Select for cost-sensitive, non-connected embedded control where USB/CAN and advanced analog processing are unnecessary. |
Compared with XMC4500-F100K1024 AC and PIC18F87J90, CY8C3665AXI-016 uniquely combines 8051 determinism, integrated CapSense®, delta-sigma ADC performance, and USB/CAN connectivity in a single low-power 48-pin package - ideal for compact, feature-rich edge nodes requiring both precision analog and human interface functionality.
Availability
CY8C3665AXI-016 is available at Aetrix Electronics and suitable for industrial motor control, medical sensor hubs, smart home touch interfaces, and automated test equipment requiring stable component supply and long-term lifecycle support.
Supply support for CY8C3665AXI-016 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
Cypress Semiconductor (now part of Infineon Technologies) designs programmable mixed-signal ICs for embedded systems, emphasizing integration, low power, and developer productivity through PSoC architecture and PSoC Creator™ toolchain.
The CY8C36 family targets industrial, medical, and consumer applications demanding configurable analog/digital peripherals, robust communication (CAN/USB), and rapid firmware iteration - enabling hardware-software co-design without ASIC-level effort.
FAQ
What debug interfaces does CY8C3665AXI-016 support?
CY8C3665AXI-016 supports JTAG (4-wire), Serial Wire Debug (SWD, 2-wire), and Single Wire Viewer (SWV) for real-time trace. It includes eight address breakpoints, one data breakpoint, and a 4-KB instruction trace buffer - enabling cycle-accurate debugging of time-critical firmware without halting system operation.
Does CY8C3665AXI-016 require an external crystal for USB operation?
No. CY8C3665AXI-016 integrates an internal oscillator qualified for Full-Speed USB 2.0 (12 Mbps) operation without external crystal. An external 4–33 MHz crystal is optional for higher accuracy timing or RTC functionality, but not required for USB enumeration or data transfer.
Can all GPIO pins be used for CapSense® sensing?
Yes - all 62 GPIO pins support CapSense® functionality, including self-capacitance, mutual-capacitance, and proximity sensing. However, GPIOs connected to opamp outputs are not recommended for CapSense® due to potential signal interference, as specified in the datasheet's analog subsystem section.
What is the maximum operating frequency of the delta-sigma ADC?
The delta-sigma ADC achieves 192 kSPS in 12-bit mode with 66 dB SINAD and ±1 LSB INL/DNL. At lower resolutions (e.g., 8-bit), sampling rate increases, but the datasheet specifies 192 kSPS as the maximum validated rate for full 12-bit accuracy across –40 °C to +85 °C.
CY8C3665AXI-016 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 100-LQFP
- Series:
- PSOC™ 3 CY8C36xx
- 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, 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-016 FAQ
1.How can I place an order for CY8C3665AXI-016 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3665AXI-016 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-016 reliable?
The price and inventory of CY8C3665AXI-016 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3665AXI-016 is usually 5 days.
3.What payment methods are accepted for CY8C3665AXI-016?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3665AXI-016 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3665AXI-016?
CY8C3665AXI-016 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3665AXI-016 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-016?
For technical support, including CY8C3665AXI-016 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3665AXI-016 requirements.
6.How does Aetrix verify that CY8C3665AXI-016 is sourced from the original manufacturer or authorized distributors?
All CY8C3665AXI-016 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-016 meets industry standards.
7.What is the process for return or replacement of CY8C3665AXI-016?
All CY8C3665AXI-016 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3665AXI-016, 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-016 part is unused and in its original packaging.
Return procedure for CY8C3665AXI-016:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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