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Infineon Technologies CY8C3665LTI-006
- Part No.:
- CY8C3665LTI-006
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
CY8C3665LTI-006.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,155
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Product details
Overview
CY8C3665LTI-006 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 12-bit delta-sigma ADC, four opamps, four comparators, four DACs, CAN 2.0b interface, and USB 2.0 FS PHY - all in a 48-pin SSOP package rated for –40 °C to +85 °C industrial operation.
For engineers reviewing the CY8C3665LTI-006 datasheet, CY8C3665LTI-006 pinout, CY8C3665LTI-006 application, or CY8C3665LTI-006 equivalent, this device supports rapid mixed-signal system integration with field-upgradable firmware, CapSense® capacitive sensing, LCD direct drive, and real-time signal processing via its 24-bit digital filter block (DFB) and DMA engine.
Technical Context
The CY8C3665LTI-006 implements a single-cycle 8051 microcontroller core operating up to 67 MHz with multiply/divide instructions, 24-channel DMA supporting chained descriptors and AHB bus access, and a clocking system featuring internal IMO (3–62 MHz), crystal oscillator (4–33 MHz), PLL, and 32.768-kHz RTC oscillator. Its analog subsystem centers on a 1.024-V ±0.1% voltage reference and a configurable delta-sigma ADC delivering 12-bit resolution at 192 kSPS with 66 dB SINAD and ±1 LSB INL/DNL.
Digital flexibility derives from 24 universal digital blocks (UDBs) enabling custom logic synthesis, plus hard-macro peripherals: full-speed USB 2.0 (12 Mbps), CAN 2.0b (16 Rx/8 Tx buffers), I²C multi-master, four 16-bit timer/counter/PWM units, and serial interfaces (SPI, UART, LIN). Analog routing allows any of 62 GPIOs to serve as analog inputs or outputs, with dedicated SC/CT blocks supporting PGA, TIA, mixer, and sample-and-hold configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051 running up to 67 MHz; enables deterministic real-time control with hardware multiply/divide. |
| Flash Memory | 64 KB program flash with 100,000 write cycles and 20-year data retention; supports secure firmware updates and bootloader deployment. |
| ADC Resolution | Configurable 8–12-bit delta-sigma ADC; 12-bit mode achieves 192 kSPS sampling rate and 66 dB SINAD for precision sensor acquisition. |
| Digital Peripherals | 24 UDBs + hard-macro CAN 2.0b (16 Rx/8 Tx), USB 2.0 FS PHY, and four 16-bit timer/counter/PWM blocks; enables protocol stack offload and timing-critical waveform generation. |
| Analog Resources | Four rail-to-rail opamps (25 mA drive), four comparators (95 ns response), four DACs (8-bit IDAC/VDAC), and programmable SC/CT blocks; supports active front-end conditioning and closed-loop analog control. |
| Power Management | Operating voltage 0.5–5.5 V; ultra-low-power modes include 1 µA sleep (RTC + LVD active) and 200 nA hibernate (RAM retention); enables battery-powered long-life designs. |
| I/O System | 62 GPIOs + 8 SIOs + 2 USBIOs; full routability between any pin and any analog/digital peripheral; supports CapSense®, LCD 46×16 segment drive, and multi-voltage I/O domains (1.2–5.5 V). |
Pinout & Package
Package: 48-pin SSOP (Small Outline Package), 0.635 mm pitch, body size 15.4 × 7.5 mm, lead count 48, RoHS-compliant, industrial temperature grade (–40 °C to +85 °C).
| 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 supply for analog subsystem; isolation prevents digital noise coupling into ADC/DAC paths. |
| VSS | Digital ground | Reference return for digital logic and CPU; must be connected to low-impedance ground plane. |
| VSSA | Analog ground | Isolated analog return path; separation from VSS minimizes ground bounce in high-resolution ADC measurements. |
| XRES | External reset input | Active-low asynchronous reset; pulled high internally; external pull-up recommended for robust ESD immunity. |
| P0[0]–P0[7] | General-purpose I/O bank 0 | Configurable as digital/analog I/O; supports CapSense®, comparator input, ADC channel, or USB D+ (P0[6]) / D– (P0[7]). |
| P1[0]–P1[7] | General-purpose I/O bank 1 | Supports LCD segment drive, opamp output, DAC output, or SIO functions (e.g., high-current sink up to 25 mA). |
| JTAG/SWD | Debug interface pins | TCK/TMS/TDO/TDI (JTAG) or SWDIO/SWCLK (SWD); enables non-intrusive debug, trace, and programming without halting CPU execution. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Delta-Sigma ADC | 12-bit resolution at 192 kSPS with ±1 LSB INL/DNL and 66 dB SINAD; supports programmable gain (×0.25 to ×16) for direct thermocouple or bridge sensor interfacing. |
| Digital Filter Block (DFB) | 67-MHz, 24-bit fixed-point engine implementing FIR/IIR filters; processes ADC output via DMA without CPU load, enabling real-time spectral analysis or noise cancellation. |
| CapSense® Integration | Capacitive touch sensing on any GPIO with built-in hardware scanning engine; eliminates external controller and reduces BOM cost in HMI applications. |
| Multi-Protocol Communication | On-die CAN 2.0b controller (16 Rx/8 Tx buffers) and USB 2.0 FS PHY (12 Mbps) coexist with I²C and SPI; supports automotive diagnostics and PC-connected embedded instrumentation. |
| Ultra-Low-Power Operation | 200 nA hibernate mode with RAM retention and 1 µA sleep mode with RTC/LVD; enables decade-scale battery life in wireless sensor nodes and portable medical devices. |
Applications
| Industrial Motor Control | Medical Patient Monitoring |
|---|---|
|
Use Scenario: Closed-loop speed/torque regulation of BLDC motors using hall-effect or encoder feedback. IC Role / Device Role / Timing Role: Real-time PWM generation, analog current/voltage sensing via ADC, and CAN-based command/response communication with host PLC. Use Value: Integrated 16-bit PWM timers with dead-time insertion, 12-bit ADC with <100 µV offset, and CAN 2.0b reduce external component count and improve loop timing determinism. |
Use Scenario: Portable ECG/SpO₂ monitor acquiring biopotential signals and driving OLED/LCD display. IC Role / Device Role / Timing Role: Analog front-end (PGA + ADC + DFB filtering), CapSense® button interface, and LCD segment driver with integrated boost regulator. Use Value: Single-chip solution replaces discrete opamp/ADC/microcontroller/display driver; 0.5–5.5 V operation enables direct coin-cell or Li-ion battery use. |
| Automotive Body Electronics | Smart Home Sensor Hub |
|
Use Scenario: Door module controlling window lift, mirror adjustment, and interior lighting with LIN/CAN gateway functionality. IC Role / Device Role / Timing Role: LIN 2.0 slave node with wake-on-LIN, CAN 2.0b gateway, and high-current SIO drivers for motor/LED loads. Use Value: 25 mA SIO sink capability drives small DC motors directly; dual-protocol support simplifies vehicle network integration without external transceivers. |
Use Scenario: Multi-sensor aggregator (temperature, humidity, motion, ambient light) with BLE or Wi-Fi connectivity via external MCU. IC Role / Device Role / Timing Role: Signal conditioning, low-power sensor polling, and CapSense® touch interface for local UI; communicates via UART/SPI to host radio MCU. Use Value: Ultra-low-power hibernate mode extends battery life >5 years; configurable analog blocks adapt to diverse sensor output types without PCB redesign. |
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-065 | 100-pin TQFP package; adds USB 2.0 HS PHY, higher GPIO count (72), and enhanced analog resources (6 opamps, 6 DACs). | Suitable for complex USB-hosted instrumentation requiring more I/O and higher analog channel density. | Select when board space permits larger package and USB high-speed host capability is required. |
| CY8C4247LQI-BL483 | PSoC 4200 series (ARM Cortex-M0+ core); lower power (150 nA hibernate), no CAN, but adds BLE radio and faster ADC (1 MSPS). | Better suited for Bluetooth-connected edge sensors where wireless telemetry outweighs CAN bus needs. | Choose for BLE-integrated IoT endpoints; avoid if CAN 2.0b or legacy 8051 toolchain compatibility is mandatory. |
Compared with CY8C3866AXI-065 and CY8C4247LQI-BL483, the CY8C3665LTI-006 delivers optimal balance of CAN/USB dual-protocol support, industrial-grade analog precision, and mature 8051 ecosystem - making it ideal for cost-sensitive, field-deployed industrial controllers where deterministic real-time performance and long-term toolchain stability are critical.
Availability
CY8C3665LTI-006 is available at Aetrix Electronics and suitable for industrial motor control, medical patient monitoring, automotive body electronics, and smart home sensor hub applications requiring stable component supply across extended product lifecycles.
Supply support for CY8C3665LTI-006 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 manufactures and supports the PSoC® family, delivering scalable, configurable mixed-signal solutions for industrial, automotive, and consumer markets.
The CY8C36 series belongs to the PSoC 3 platform, designed specifically for ultra-low-power, high-precision mixed-signal embedded systems requiring field-upgradable analog/digital functionality without hardware changes.
FAQ
What development tools are required to program the CY8C3665LTI-006?
PSoC Creator™ IDE is the official, free development environment for CY8C3665LTI-006, providing schematic-based design entry, component catalog integration, automatic code generation, and debug support via JTAG or SWD. Required hardware includes a MiniProg3 or KitProg programmer/debugger; no third-party toolchain licensing is needed.
Does the CY8C3665LTI-006 support true hardware CAN 2.0b compliance?
Yes - the device integrates a fully compliant CAN 2.0b controller with 16 receive and 8 transmit message buffers, bit-rate programmability (up to 1 Mbps), automatic retransmission, error confinement, and bus-off recovery - meeting ISO 11898-1 requirements without external CAN transceiver logic.
Can the internal 1.024-V reference be used for external circuitry?
No - the 1.024-V ±0.1% internal reference is routed exclusively to on-die analog blocks (ADC, DAC, comparators) and is not accessible at any package pin; external precision references must be supplied separately if needed for external analog circuitry.
How does the DFB interact with the ADC in real-time signal processing?
The DFB receives ADC conversion results via DMA without CPU involvement; it executes user-configured FIR/IIR filter coefficients at up to 67 MHz, outputting filtered data to memory or peripherals - enabling continuous, deterministic filtering of streaming sensor data while the CPU handles higher-level tasks.
CY8C3665LTI-006 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-VFQFN Exposed Pad
- 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, LCD, POR, PWM, WDT
- Number of I/O:
- 25
- 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:
CY8C3665LTI-006 FAQ
1.How can I place an order for CY8C3665LTI-006 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3665LTI-006 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 CY8C3665LTI-006 reliable?
The price and inventory of CY8C3665LTI-006 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3665LTI-006 is usually 5 days.
3.What payment methods are accepted for CY8C3665LTI-006?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3665LTI-006 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3665LTI-006?
CY8C3665LTI-006 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3665LTI-006 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 CY8C3665LTI-006?
For technical support, including CY8C3665LTI-006 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3665LTI-006 requirements.
6.How does Aetrix verify that CY8C3665LTI-006 is sourced from the original manufacturer or authorized distributors?
All CY8C3665LTI-006 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 CY8C3665LTI-006 meets industry standards.
7.What is the process for return or replacement of CY8C3665LTI-006?
All CY8C3665LTI-006 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3665LTI-006, 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 CY8C3665LTI-006 part is unused and in its original packaging.
Return procedure for CY8C3665LTI-006:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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