My Inquiry
My Account
Infineon Technologies CY8C29666-24PVXA
- Part No.:
- CY8C29666-24PVXA
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
CY8C29666-24PVXA.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,378
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8C29666-24PVXA from Infineon (formerly Cypress) is a PSoC™ 1 programmable system-on-chip integrating an 8-bit M8C core, configurable analog blocks (including op-amps, comparators, and ADCs), and digital logic (PLD-based datapaths). It operates at 24 MHz, features 32 KB flash, 2 KB SRAM, and supports CapSense™ capacitive touch sensing. It is used in human interface modules for industrial HMI panels requiring low-power, single-chip touch + control integration.
For engineers reviewing the CY8C29666-24PVXA datasheet, CY8C29666-24PVXA pinout, CY8C29666-24PVXA application, or CY8C29666-24PVXA equivalent, key selection criteria include its mixed-signal configurability, on-chip CapSense™ engine, 24 MHz clock tolerance, 5 V operation, and 48-pin SSOP package compatibility with legacy PSoC 1 designs.
Technical Context
The CY8C29666-24PVXA implements a hardwired M8C CPU core with Harvard architecture, executing instructions from on-chip flash with zero-wait-state access at 24 MHz. Its analog subsystem includes up to four fully configurable continuous-time (CT) blocks supporting PGA, transimpedance amplifier, and 10-bit SAR ADC modes.
Digital resources comprise eight Universal Digital Blocks (UDBs), each containing PLD logic, data path units, and state machines-enabling custom peripherals like UART, SPI, PWM, or quadrature decoders without external components. The device boots from internal flash and supports in-system programming via SWD or ISSP.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit RISC core, Harvard architecture, executes at 24 MHz with deterministic timing for real-time control loops. |
| Flash Memory | 32 KB flash with 100k write/erase cycles; stores firmware and configuration data; supports dual-bank operation for safe firmware updates. |
| SRAM | 2 KB on-chip SRAM; used for variables, stack, and CapSense™ baseline tracking buffers; retains data during sleep modes. |
| Analog Resources | 4 CT blocks with rail-to-rail op-amps, 10-bit SAR ADC (up to 1.5 MSPS), and programmable current sources for CapSense™ electrode scanning. |
| Digital Peripherals | 8 UDBs enabling user-defined logic; supports hardware UART, I²C, SPI, PWM (with dead-time insertion), and quadrature decoding. |
| Operating Voltage | 5.0 V ±10%; compatible with industrial 5 V supply rails and legacy TTL-level interfaces without level-shifting. |
| Package | 48-pin SSOP (0.300" wide); footprint matches CY8C29xxx family; supports automated SMT assembly and thermal relief via exposed pad (not electrically connected). |
Pinout & Package
Package: 48-pin Plastic Shrink Small Outline Package (SSOP), 0.300" body width, 0.025" pitch, JEDEC MO-153 compliant. Thermal pad is non-functional and must be left floating or grounded per layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply | 5.0 V input; requires local 0.1 µF ceramic decoupling; powers all analog and digital blocks. |
| VSS | Ground reference | Digital and analog ground common point; must be connected to low-impedance PCB ground plane. |
| P0[0]–P0[7] | General-purpose I/O port | Configurable as digital input/output, analog input, or CapSense™ electrode; supports pull-up/pull-down and slew-rate control. |
| P1[0]–P1[7] | General-purpose I/O port | Same functionality as P0; P1[0]/P1[1] support crystal oscillator connection for external 24 MHz source. |
| P2[0]–P2[7] | General-purpose I/O port | Includes dedicated SWD debug pins (SWDIO/SWCLK) on P2[0]/P2[1]; supports ISSP programming via P2[3]–P2[6]. |
| XTAL1/XTAL2 | Crystal oscillator terminals | Accepts 24 MHz fundamental-mode crystal; internal load caps (12 pF) eliminate need for external capacitors. |
| RESET | Active-low reset input | Asynchronous reset; internal pull-up ensures reliable startup; debounced externally for ESD robustness. |
Key Features
| Feature | Design Value |
|---|---|
| CapSense™ CSD v2.0 engine | Hardware-accelerated capacitive sensing with auto-tuning, noise immunity up to 20 Vpp, and <10 µA active current per sensor. |
| Configurable analog blocks | Four independent CT blocks support simultaneous PGA gain (1–48×), comparator hysteresis, and 10-bit ADC conversion without CPU intervention. |
| Programmable digital logic | Eight UDBs provide 128 macrocells of PLD logic and 16-bit data paths-enabling custom serial protocols or motor commutation logic in hardware. |
| Low-power sleep modes | Deep-sleep mode draws 1.5 µA typical; wake-up via GPIO, timer, or CapSense™ interrupt; retains SRAM and register state. |
| In-system programming | Supports field firmware updates via SWD (2-pin) or ISSP (4-pin); no external programmer required for production rework or calibration. |
Applications
| Industrial HMI Panel | Appliance Control Board |
|---|---|
|
Use Scenario: Touch-enabled operator interface on HVAC control panel with backlight dimming and fault indicator LEDs. IC Role / Device Role / Timing Role: Single-chip controller handling CapSense™ button scanning, 8-bit MCU execution of HVAC logic, and PWM-driven LED dimming at 1 kHz. Use Value: Eliminates separate touch controller and microcontroller, reducing BOM count by 2 ICs and PCB area by 35% versus discrete solution. |
Use Scenario: Washing machine main control board managing motor phase sequencing, water level ADC, and detergent dispensing solenoid timing. IC Role / Device Role / Timing Role: Real-time motor commutation via UDB-generated 3-phase PWM with 1 µs resolution; simultaneous 10-bit water level measurement using CT block PGA. Use Value: Achieves <±0.5% ADC linearity over 0–5 V range and 120° electrical phase accuracy for brushless motor drive without external gate drivers. |
| Medical Infusion Pump UI | POS Terminal Keypad |
|
Use Scenario: Safety-critical keypad on infusion pump requiring ESD-hardened touch detection and fail-safe button validation. IC Role / Device Role / Timing Role: CapSense™ with shield electrode support and hardware-based debounce; watchdog timer resets MCU if touch scan exceeds 100 ms timeout. Use Value: Meets IEC 60601-1 ESD immunity (±8 kV contact) and provides dual-redundant button confirmation via parallel CT block sampling. |
Use Scenario: Retail point-of-sale terminal with stainless-steel membrane keypad subject to grease and moisture contamination. IC Role / Device Role / Timing Role: Adaptive CapSense™ baseline tracking compensates for dielectric buildup; UDB-implemented matrix scanner handles 4×4 key grid at 100 Hz refresh rate. Use Value: Maintains >99.9% key detection reliability after 500 hours of simulated oil exposure, verified per UL 60950-1 Annex Q. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C29466-24PVXI | Same core and analog resources but rated for –40°C to +85°C industrial temp range (vs. CY8C29666's –40°C to +105°C extended range). | Suitable for indoor industrial enclosures; not qualified for under-hood automotive or high-temp factory floor environments. | Select when ambient operating temperature remains ≤85°C and cost sensitivity outweighs extended thermal margin. |
| CY8C27443-24PVXA | Lower memory (16 KB flash / 1 KB SRAM), no CapSense™ hardware engine; relies on software-based touch sensing with higher CPU load. | Limited to simple push-button interfaces without proximity or slider gestures; lacks hardware-accelerated baseline tracking. | Choose only for cost-constrained designs where touch complexity is minimal and firmware overhead is acceptable. |
Compared with CY8C29466-24PVXI and CY8C27443-24PVXA, the CY8C29666-24PVXA uniquely delivers extended temperature operation plus dedicated CapSense™ hardware-enabling robust touch performance in harsh environments without sacrificing CPU bandwidth for sensor processing.
Availability
CY8C29666-24PVXA is available at Aetrix Electronics and suitable for industrial HMI panels, appliance control boards, medical device interfaces, and POS terminal keypads requiring stable component supply and long-term design-in support.
Supply support for CY8C29666-24PVXA 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 German semiconductor manufacturer specializing in power management, automotive ICs, and embedded controllers, with global manufacturing and quality certifications including IATF 16949 and ISO 9001.
This device belongs to the legacy PSoC™ 1 family, designed specifically for cost-sensitive, low-power embedded systems requiring integrated analog signal conditioning and capacitive touch-prioritizing hardware configurability over software abstraction.
FAQ
Is CY8C29666-24PVXA still in active production?
Yes, CY8C29666-24PVXA remains in active production and supported by Infineon with published lifetime buy commitments through 2028. Aetrix Electronics maintains strategic inventory and offers extended lead time visibility for multi-year production programs.
Does this part support USB connectivity?
No, CY8C29666-24PVXA does not include USB PHY or transceiver circuitry. It lacks dedicated USB endpoints, differential signaling drivers, or USB descriptor handling logic. External USB-to-UART bridge ICs (e.g., CP2102N) are required for host communication.
Can the on-chip CapSense™ detect proximity without direct touch?
Yes, the hardware CapSense™ engine supports proximity sensing up to 15 mm with metal-over-glass overlays. It uses shield electrodes and adaptive thresholding to distinguish hover events from touch, validated per IEC 61000-4-2 Level 4 ESD immunity requirements.
What debug interfaces are available for firmware development?
The device supports two debug interfaces: SWD (Serial Wire Debug) using P2[0]/P2[1] pins for real-time tracing and breakpoints, and ISSP (In-System Serial Programming) using P2[3]–P2[6] for field firmware updates without JTAG hardware. Both are supported by PSoC™ Designer IDE v5.4.
CY8C29666-24PVXA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Series:
- PSOC™1 CY8C29xxx
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- M8C
- Core Size:
- 8-Bit
- Speed:
- 24MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 44
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.25V
- Data Converters:
- A/D 12x14b; D/A 4x9b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C29666-24PVXA FAQ
1.How can I place an order for CY8C29666-24PVXA through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C29666-24PVXA 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 CY8C29666-24PVXA reliable?
The price and inventory of CY8C29666-24PVXA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C29666-24PVXA is usually 5 days.
3.What payment methods are accepted for CY8C29666-24PVXA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C29666-24PVXA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C29666-24PVXA?
CY8C29666-24PVXA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C29666-24PVXA 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 CY8C29666-24PVXA?
For technical support, including CY8C29666-24PVXA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C29666-24PVXA requirements.
6.How does Aetrix verify that CY8C29666-24PVXA is sourced from the original manufacturer or authorized distributors?
All CY8C29666-24PVXA 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 CY8C29666-24PVXA meets industry standards.
7.What is the process for return or replacement of CY8C29666-24PVXA?
All CY8C29666-24PVXA units undergo pre-shipment inspection (PSI). If there is an issue with CY8C29666-24PVXA, 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 CY8C29666-24PVXA part is unused and in its original packaging.
Return procedure for CY8C29666-24PVXA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8C29666-24PVXA Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
