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Infineon Technologies CY8C29666-24LTXIT
- Part No.:
- CY8C29666-24LTXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
CY8C29666-24LTXIT.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,990
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Product details
Overview
CY8C29666-24LTXIT from Infineon Technologies (formerly Cypress) is a programmable PSoC® 1 mixed-signal System-on-Chip featuring an M8C 8-bit Harvard-architecture CPU running at up to 24 MHz, 32 KB flash, 2 KB SRAM, and configurable analog/digital blocks. It operates from 3.0 V to 5.25 V (or down to 1.0 V with on-chip switch-mode pump), supports industrial temperature range (–40 °C to +85 °C), and integrates up to four UARTs, two SPIs, and I²C for embedded control in sensor interface and motor management systems.
For engineers reviewing the CY8C29666-24LTXIT datasheet, CY8C29666-24LTXIT pinout, CY8C29666-24LTXIT application, or CY8C29666-24LTXIT equivalent, key selection criteria include its 24 MHz M8C core timing accuracy (±5% IMO), 12 analog PSoC blocks supporting 14-bit ADCs and 9-bit DACs, GPIO drive strength (25 mA sink / 10 mA source), and support for in-system serial programming (ISSP) with partial flash updates.
Technical Context
The CY8C29666-24LTXIT implements a fixed-function digital system built from 16 programmable 8-bit digital PSoC blocks, enabling user-defined peripherals like 8–32-bit timers, PWMs with dead-band, CRC/PRS modules, and up to four full-duplex UARTs. Its analog system comprises 12 rail-to-rail analog PSoC blocks supporting decimator-based 14-bit ΔΣ ADCs, 9-bit DACs, PGAs, and programmable filters - all routed via global analog interconnect.
Clock architecture includes a ±5% internal main oscillator (IMO) at 24/48 MHz, optional 32.768 kHz crystal input with PLL for crystal-accurate system clock, and independent 32 kHz ILO for watchdog/sleep. Memory subsystem features 32 KB flash (50,000 erase/write cycles), 2 KB SRAM, and EEPROM emulation - all protected by four-level flash block locking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture, 24 MHz max operation (4 MIPS), 17-interrupt vector controller |
| Operating Voltage | 3.0 V to 5.25 V standard; down to 1.0 V using integrated switch-mode pump (SMP) |
| Temperature Range | Industrial grade: –40 °C to +85 °C; IMO frequency tolerance ±5% across full range |
| Memory | 32 KB flash (64-byte protection blocks), 2 KB SRAM, EEPROM emulation in flash |
| Analog Blocks | 12 configurable analog PSoC blocks: support 14-bit ΔΣ ADC, 9-bit DAC, PGA, comparator, filter |
| Digital Blocks | 16 digital PSoC blocks: enable 8–32-bit timers/counters, PWMs, UARTs (up to 4), SPI (up to 2), I²C |
| I/O Drive | All GPIOs support 25 mA sink / 10 mA source, eight drive modes (pull-up/down, high-Z, strong, open-drain) |
Pinout & Package
Package: 48-pin QFP (LQFP-48), 7 mm × 7 mm, 0.5 mm pitch, RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Main analog/digital supply input (3.0–5.25 V); decoupling required per datasheet layout guidelines |
| VSS | GND reference | Digital and analog ground return; separate analog/digital GND routing recommended |
| P0[0]–P0[7] | GPIO Port 0 | 8-bit bidirectional port with analog input capability (8 standard analog inputs), interrupt on change |
| P1[0]–P1[7] | GPIO Port 1 | 8-bit bidirectional port; supports analog outputs (4× 40 mA capable), configurable drive modes |
| XIN/XOUT | Crystal oscillator terminals | Supports 32.768 kHz external crystal for RTC or PLL-referenced 24 MHz system clock |
| RESET | Active-low reset input | Asynchronous reset; internal pull-up; compatible with external reset supervisor circuits |
| SWDCK/SWDIO | Debug interface | Two-pin SWD interface for MiniProg3 programming and full-speed ICE debugging |
Key Features
| Feature | Design Value |
|---|---|
| Configurable analog blocks | 12 independent rail-to-rail analog resources enabling simultaneous 14-bit ADC + 9-bit DAC + PGA in one device |
| Programmable digital peripherals | 16 digital blocks combinable into custom 8–32-bit timers, PWMs with hardware dead-band, or multi-protocol UART/SPI/I²C |
| Flexible clocking | Internal 24/48 MHz IMO ±5%, optional 32.768 kHz ECO with PLL for crystal-accurate timing, plus 32 kHz ILO for low-power sleep |
| Robust I/O architecture | All 40 GPIOs support 25 mA sink, 10 mA source, 8 drive modes, and configurable interrupt triggers (high/low/change) |
| In-system programmability | ISSP interface enables field firmware updates without socket removal; supports partial flash reprogramming and secure block locking |
Applications
| Motor Control Interface | Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Closed-loop DC motor control with current sensing, PWM generation, and thermal monitoring in industrial actuators. IC Role / Device Role / Timing Role: Central controller executing real-time PID loop at 24 MHz, generating synchronized PWMs with dead-band, and digitizing analog feedback via 14-bit ADC. Use Value: Eliminates discrete op-amps, comparators, and timer ICs by integrating analog front-end and digital control logic in one chip with deterministic 24 MHz timing. |
Use Scenario: Multi-channel environmental sensor hub aggregating thermistor, RTD, and capacitive humidity signals in HVAC control panels. IC Role / Device Role / Timing Role: Analog signal conditioner with programmable gain amplifiers, 14-bit ΔΣ ADC, and digital filtering before I²C transmission to host MCU. Use Value: Achieves <1 LSB INL over temperature using on-chip precision voltage reference and rail-to-rail analog blocks - no external calibration required. |
| Industrial HMI Panel | Legacy Protocol Bridge |
|
Use Scenario: Keypad + LED status panel with capacitive touch overlay and RS-232/RS-485 communication in factory floor equipment. IC Role / Device Role / Timing Role: Mixed-signal interface managing GPIO-driven LEDs, capacitive sense scanning, and dual UARTs for legacy serial protocol translation. Use Value: Replaces microcontroller + touch controller + level shifters with single-chip solution supporting both analog touch sensing and robust 3.3V/5V-tolerant UART I/O. |
Use Scenario: Fieldbus protocol converter bridging Modbus RTU (RS-485) to CANopen or I²C in building automation gateways. IC Role / Device Role / Timing Role: Protocol translator using UART + SPI peripherals, SRAM-buffered message parsing, and GPIO-controlled direction control for half-duplex RS-485 transceivers. Use Value: Enables deterministic timing-critical bit-banging of Modbus framing while offloading host processor - supported by 2 KB SRAM and ISSP-updatable firmware. |
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 |
|---|---|---|---|
| CY8C29466-24LTXIT | Same PSoC 1 family, identical M8C core and memory, but only 28-pin SOIC package and reduced I/O count (20 GPIOs vs. 40) | Limited analog/digital block availability; supports only two UARTs and fewer analog inputs | Select when board space and peripheral count are constrained, and 20 GPIOs suffice for target function. |
| CY8C29866-24LTXIT | Pin-compatible 48-QFP variant with extended temperature range (–40 °C to +125 °C) and enhanced ESD rating (±4 kV HBM) | Validated for under-hood automotive use; same analog/digital block count and ISSP capability | Select for automotive-grade thermal reliability and higher ESD immunity where industrial spec is insufficient. |
Compared with CY8C29466-24LTXIT, the CY8C29666-24LTXIT provides 40 GPIOs and full peripheral complement in 48-QFP; versus CY8C29866-24LTXIT, it trades extended temperature/ESD rating for cost-optimized industrial qualification - making it ideal for space-constrained, non-automotive embedded control.
Availability
CY8C29666-24LTXIT is available at Aetrix Electronics and suitable for motor control interfaces, sensor signal conditioning, industrial HMI panels, and legacy protocol bridges requiring stable component supply and long-term production support.
Supply support for CY8C29666-24LTXIT 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 maintains the full PSoC portfolio, delivering high-performance, configurable mixed-signal solutions for industrial, automotive, and consumer applications.
The CY8C29666 belongs to the PSoC® 1 family - designed specifically for cost-sensitive, space-constrained embedded systems requiring integrated analog signal conditioning, digital control logic, and field-upgradable firmware in a single chip.
FAQ
Does CY8C29666-24LTXIT support USB connectivity?
No. The CY8C29666-24LTXIT does not include a USB physical layer or USB controller. It supports UART, SPI, and I²C for host communication. For USB-capable PSoC devices, consider the PSoC 3 or PSoC 4 families - the CY8C29666 is strictly a PSoC 1-generation part with no USB PHY or endpoint logic.
What development tools are required to program CY8C29666-24LTXIT?
Programming requires Cypress's legacy PSoC Designer™ IDE (Windows-only, free download) and a MiniProg1 or MiniProg3 programmer/debugger. The MiniProg3 supports full-speed in-circuit emulation (ICE), complex breakpoints, and 128 KB trace memory - essential for debugging real-time analog/digital interactions in this device.
Can CY8C29666-24LTXIT operate from a single 3.3 V supply?
Yes. The device operates across 3.0 V to 5.25 V, so 3.3 V is fully supported. At 3.3 V, the M8C core runs at up to 24 MHz, and all analog blocks (ADC, DAC, PGA) maintain specified performance. No level-shifting is needed for 3.3 V GPIO interfacing, though drive strength remains 25 mA sink / 10 mA source.
Is there hardware support for cryptographic functions in CY8C29666-24LTXIT?
No. The CY8C29666-24LTXIT lacks dedicated cryptographic accelerators, TRNG, or secure boot hardware. Security relies on software-based algorithms executed on the M8C core, with flash protection levels limiting unauthorized read access. For hardware crypto, consider PSoC 4 or PSoC 5LP devices with dedicated AES engines.
CY8C29666-24LTXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-VFQFN Exposed Pad
- Series:
- PSOC™1 CY8C29xxx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
CY8C29666-24LTXIT FAQ
1.How can I place an order for CY8C29666-24LTXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C29666-24LTXIT 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 CY8C29666-24LTXIT reliable?
The price and inventory of CY8C29666-24LTXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C29666-24LTXIT is usually 5 days.
3.What payment methods are accepted for CY8C29666-24LTXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C29666-24LTXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C29666-24LTXIT?
CY8C29666-24LTXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C29666-24LTXIT 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 CY8C29666-24LTXIT?
For technical support, including CY8C29666-24LTXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C29666-24LTXIT requirements.
6.How does Aetrix verify that CY8C29666-24LTXIT is sourced from the original manufacturer or authorized distributors?
All CY8C29666-24LTXIT 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 CY8C29666-24LTXIT meets industry standards.
7.What is the process for return or replacement of CY8C29666-24LTXIT?
All CY8C29666-24LTXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY8C29666-24LTXIT, 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 CY8C29666-24LTXIT part is unused and in its original packaging.
Return procedure for CY8C29666-24LTXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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