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Infineon Technologies CY8C5666AXQ-LP004
- Part No.:
- CY8C5666AXQ-LP004
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
CY8C5666AXQ-LP004.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,227
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Product details
Overview
CY8C5666AXQ-LP004 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 based programmable system-on-chip (PSoC® 5LP) with up to 256 KB flash, 64 KB RAM, full CAN 2.0b interface, USB 2.0 Full-Speed peripheral, and configurable analog/digital peripherals. It operates from 1.71–5.5 V across –40 to 85 °C, supports ultra-low-power modes (300 nA hibernate), and targets embedded control in industrial HMI, medical sensors, and automotive body electronics.
For engineers reviewing the CY8C5666AXQ-LP004 datasheet, CY8C5666AXQ-LP004 pinout, CY8C5666AXQ-LP004 application, or CY8C5666AXQ-LP004 equivalent, key selection criteria include its integrated DFB digital filter processor, dual SAR ADCs, CapSense® support for 62 sensors, and routing flexibility enabling analog/digital function assignment to any GPIO.
Technical Context
The CY8C5666AXQ-LP004 implements a tightly coupled mixed-signal architecture where the Arm Cortex-M3 CPU (up to 80 MHz) coordinates programmable analog blocks (PGA, TIA, delta-sigma and SAR ADCs), digital UDBs (20–24 configurable logic units), and dedicated peripherals including CAN 2.0b (16 Rx/8 Tx buffers) and USB FS (12 Mbps, TID#10840032 certified). Its clocking subsystem integrates PLL, internal oscillators (1–74 MHz), and 12 routable dividers.
Power management includes six independent domains, boost regulator (0.5–5 V), and three low-power states: active (3.1 mA @ 6 MHz), sleep (2 µA), and hibernate (300 nA with RAM retention). I/O supports 62 GPIOs with CapSense®, LCD direct drive (46×16), and SIO pins rated for 25 mA sink and overvoltage tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M3, 80 MHz max - enables real-time deterministic control with 32 interrupt inputs and DMA-driven peripheral offload. |
| Memory | 256 KB flash + 32 KB ECC flash + 64 KB RAM + 2 KB EEPROM - supports secure firmware storage, error correction, and data logging without external memory. |
| Analog Peripherals | Two 12-bit SAR ADCs + 8–12-bit delta-sigma ADC + four opamps + four comparators + four 8-bit DACs - enables simultaneous high-precision sensor acquisition and analog signal conditioning. |
| Digital Connectivity | Full CAN 2.0b (16 Rx/8 Tx buffers) + USB 2.0 FS (12 Mbps, TID#10840032) + I²C (1 Mbps) - provides robust vehicle bus integration and host communication without external transceivers. |
| Power Efficiency | 300 nA hibernate mode with RAM retention - allows battery-powered devices to maintain state during multi-year standby in metering or remote sensing. |
| I/O Flexibility | 62 GPIOs with full analog/digital peripheral routing + CapSense® on any pin + LCD direct drive (46×16) - eliminates external touch controllers and display drivers in HMI designs. |
| Clock System | Internal PLL (up to 80 MHz), 32.768 kHz watch crystal input, 12 programmable dividers - delivers precise timing for RTC, audio sampling, and synchronized PWM generation. |
Pinout & Package
Package: 68-pin QFN (9 mm × 9 mm, 0.5 mm pitch), RoHS-compliant, thermally enhanced with exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA / VDDD | Analog/Digital Power Supply | Independent 1.71–5.5 V domains enable noise-isolated analog operation while digital logic runs at optimized voltage. |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Configurable GPIO | Each pin supports analog input/output, digital logic, CapSense®, or LCD segment/common - routed dynamically via DSI and analog mux. |
| USB_DP / USB_DM | USB 2.0 Full-Speed Interface | Dedicated differential pair compliant with USB specification; requires no external PHY - reduces BOM and layout complexity. |
| CAN_TX / CAN_RX | CAN 2.0b Physical Layer Interface | Direct connection to external CAN transceiver; supports bit rates up to 1 Mbps with hardware message filtering and buffering. |
| XRES | External Reset Input | Active-low asynchronous reset pin with internal pull-up; compatible with standard microcontroller reset sequencing and watchdog circuits. |
| SWDIO / SWCLK | Serial Wire Debug Interface | 2-wire debug port supporting programming, real-time trace, and breakpoints - eliminates need for JTAG header space. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Blocks | Four SC/CT blocks configure as PGA, TIA, mixer, or sample-and-hold - enables front-end signal conditioning for current/voltage/impedance sensing without external opamp networks. |
| Digital Filter Processor (DFB) | 24-bit, 64-tap fixed-point engine - executes FIR/IIR filtering, FFT preprocessing, or motor control algorithms in hardware, freeing CPU cycles. |
| CapSense® Capacitive Sensing | Support for up to 62 self- or mutual-capacitance sensors - delivers button/slider/wheel UI with <10 µA active current and immunity to moisture and EMI. |
| UDB Array (20–24 blocks) | Each contains PAL + state machine - synthesizes custom UART/SPI/LIN/CRC/PRS logic or glueless interface bridging without FPGA-level design effort. |
| Bootloader Flexibility | On-chip bootloader supports firmware updates via I²C, SPI, UART, or USB - enables field upgrades and secure OTA deployment in connected devices. |
Applications
| Industrial HMI Panel | Medical Vital Signs Monitor |
|---|---|
|
Use Scenario: Touch-enabled control panel for PLCs and factory HMIs operating in noisy 24 V DC environments. IC Role / Device Role / Timing Role: Central controller managing CapSense® buttons, LCD display, CAN bus diagnostics, and analog sensor inputs (temperature, pressure). Use Value: Single-chip integration eliminates discrete touch controller, display driver, and CAN transceiver - reducing PCB area by >35% and improving EMI resilience. |
Use Scenario: Portable patient monitor acquiring ECG, SpO₂, and temperature with battery life >72 hours. IC Role / Device Role / Timing Role: Signal acquisition hub performing analog front-end amplification, 12-bit SAR ADC sampling, and real-time digital filtering via DFB. Use Value: 300 nA hibernate mode preserves RAM state between measurements; integrated opamps and PGAs reduce external component count by 12+ parts. |
| Automotive Body Control Module | Smart Energy Meter |
|
Use Scenario: Door module controlling window lift, mirror adjustment, and interior lighting with LIN/CAN gateway functionality. IC Role / Device Role / Timing Role: CAN 2.0b node interfacing with vehicle network and LIN master coordinating actuators using UDB-generated protocol frames. Use Value: Hardware-accelerated CAN message filtering and buffering ensures deterministic response under bus load >70%, meeting ISO 11898-1 timing requirements. |
Use Scenario: DIN-rail mounted electricity meter with tamper detection, harmonic analysis, and secure firmware updates. IC Role / Device Role / Timing Role: High-accuracy metrology engine using delta-sigma ADC with 1.024 V ±0.1% reference and DFB-based harmonic computation. Use Value: On-chip ECC flash and secure bootloader prevent unauthorized firmware modification; dual ADCs enable simultaneous voltage/current sampling at 16 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C5868AXI-LP035 | Higher memory (512 KB flash, 64 KB RAM), extended temp (–40 to 105 °C), same package and peripheral set. | Better suited for automotive under-hood or industrial edge computing requiring extended temperature and larger firmware footprint. | Select when firmware complexity exceeds 256 KB or ambient temperature exceeds 85 °C. |
| STM32F412ZGT6 | ARM Cortex-M4F core, FPU, no integrated analog configurability, requires external ADC/DAC/opamps for sensor front-end. | Lower BOM cost in pure digital control applications but adds ≥8 passive/active components for equivalent analog signal chain. | Select when floating-point math dominates and analog integration is unnecessary or handled externally. |
Compared with CY8C5666AXQ-LP004, CY8C5868AXI-LP035 offers headroom for future firmware expansion and harsher environments, while STM32F412ZGT6 trades analog integration for raw compute throughput and ecosystem maturity - making it preferable only when analog configurability is not required.
Availability
CY8C5666AXQ-LP004 is available at Aetrix Electronics and suitable for industrial HMI, medical sensor nodes, and automotive body electronics requiring stable component supply, long-term lifecycle support, and qualified manufacturing traceability.
Supply support for CY8C5666AXQ-LP004 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 is a global semiconductor leader headquartered in Munich, Germany, specializing in power systems, automotive MCUs, and secure connectivity solutions.
This device belongs to the PSoC® 5LP family - designed specifically for highly integrated, low-power embedded control where analog signal conditioning, digital logic, and communication interfaces must coexist on a single die without compromising performance or flexibility.
FAQ
Does CY8C5666AXQ-LP004 support USB device enumeration without external crystal?
Yes. The device integrates an internal oscillator qualified for USB Full-Speed (12 Mbps) operation per TID#10840032 certification. No external crystal is required for basic USB device functionality, though a 32.768 kHz watch crystal is needed for RTC accuracy and low-power clock gating.
What is the maximum number of CapSense® sensors supported, and how is noise immunity achieved?
CY8C5666AXQ-LP004 supports up to 62 CapSense® sensors using either self- or mutual-capacitance methods. Noise immunity is achieved through hardware-based correlation filtering, shield-driven scanning, and programmable IDAC current sources that adapt to environmental capacitance drift - all managed by the on-chip CapSense® CSD block.
Can the DFB (Digital Filter Block) operate independently of the CPU core?
Yes. The DFB is a fully autonomous 24-bit, 64-tap fixed-point processor with its own instruction memory and data RAM. It can execute FIR/IIR filters, FFT stages, or motor control algorithms triggered by DMA or timer events - allowing continuous signal processing while the Cortex-M3 remains in sleep mode.
Is the CAN interface compatible with ISO 11898-1 physical layer requirements?
No - the CY8C5666AXQ-LP004 implements only the CAN protocol stack (2.0b) and message handling logic. An external CAN transceiver (e.g., TJA1042 or SN65HVD230) is required to meet ISO 11898-1 physical layer specifications for bus termination, slew rate control, and fault protection.
CY8C5666AXQ-LP004 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 100-LQFP
- Series:
- PSOC™ 5 CY8C56LP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 67MHz
- Connectivity:
- I2C, LINbus, SPI, UART/USART, USB
- Peripherals:
- CapSense, DMA, LCD, POR, PWM, WDT
- Number of I/O:
- 62
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 2x12b; D/A 4x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C5666AXQ-LP004 FAQ
1.How can I place an order for CY8C5666AXQ-LP004 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C5666AXQ-LP004 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 CY8C5666AXQ-LP004 reliable?
The price and inventory of CY8C5666AXQ-LP004 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C5666AXQ-LP004 is usually 5 days.
3.What payment methods are accepted for CY8C5666AXQ-LP004?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C5666AXQ-LP004 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C5666AXQ-LP004?
CY8C5666AXQ-LP004 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C5666AXQ-LP004 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 CY8C5666AXQ-LP004?
For technical support, including CY8C5666AXQ-LP004 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C5666AXQ-LP004 requirements.
6.How does Aetrix verify that CY8C5666AXQ-LP004 is sourced from the original manufacturer or authorized distributors?
All CY8C5666AXQ-LP004 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 CY8C5666AXQ-LP004 meets industry standards.
7.What is the process for return or replacement of CY8C5666AXQ-LP004?
All CY8C5666AXQ-LP004 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C5666AXQ-LP004, 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 CY8C5666AXQ-LP004 part is unused and in its original packaging.
Return procedure for CY8C5666AXQ-LP004:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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