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Infineon Technologies CY8C29866-24AXI
- Part No.:
- CY8C29866-24AXI
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
CY8C29866-24AXI.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,089
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Product details
Overview
CY8C29866-24AXI from Infineon Technologies (formerly Cypress) is a programmable PSoC® 1 System-on-Chip integrating an M8C 8-bit Harvard-architecture CPU, 32 KB flash, 2 KB SRAM, 12 analog and 16 digital configurable blocks, and industrial-grade operation from –40 °C to +85 °C. It supports 24 MHz internal oscillator (±5% over full temp range), 3.0–5.25 V operation, and on-chip switch-mode pump for 1.0 V core operation - deployed in motor control feedback loops, sensor signal conditioning, and industrial HMI front-ends.
For engineers reviewing the CY8C29866-24AXI datasheet, CY8C29866-24AXI pinout, CY8C29866-24AXI application, or CY8C29866-24AXI equivalent, key selection criteria include analog block count (12), digital block count (16), GPIO drive strength (25 mA sink / 10 mA source), EEPROM emulation capability, and I²C/SPI/UART peripheral integration without external glue logic.
Technical Context
The CY8C29866-24AXI implements a fixed-function M8C core with 4 MIPS throughput at 24 MHz, paired with a global interconnect fabric routing signals between 12 analog PSoC blocks (supporting up to 14-bit ADCs, 9-bit DACs, PGAs, and comparators) and 16 digital blocks (configurable as 8–32-bit timers, PWMs, UARTs, SPI, or CRC/PRS modules). All peripherals are user-defined via PSoC Designer software and mapped dynamically to GPIO pins.
Clocking combines an internal ±5% 24 MHz IMO (doublable to 48 MHz), 32.768 kHz ECO for RTC, and ILO for low-power sleep modes. Power management includes on-chip SMP enabling 1.0 V operation, LVD with user-configurable thresholds, and integrated supervisory circuitry - all supporting deterministic real-time execution in resource-constrained embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture, 24 MHz max, 4 MIPS performance - enables deterministic real-time control without external timing compensation. |
| Flash Memory | 32 KB program flash with 50,000 erase/write cycles and 4-level block protection - supports secure firmware updates and IP protection in field-deployed devices. |
| SRAM | 2 KB static RAM - sufficient for dual-buffered sensor acquisition, PID stack, and interrupt context storage in closed-loop systems. |
| Analog Blocks | 12 rail-to-rail configurable analog blocks - deliver up to 14-bit ADC resolution, 9-bit DAC output, PGA gain up to 48×, and active filtering without external op-amps. |
| Digital Blocks | 16 programmable digital blocks - combine to form 8–32-bit counters/timers, PWMs with dead-band, two full-duplex UARTs, two SPI interfaces, and I²C master/slave/multi-master up to 400 kHz. |
| GPIO | Up to 48 pins with 25 mA sink / 10 mA source, 8 drive modes (pull-up/down, high-Z, strong, open-drain), and configurable interrupt on level/change - eliminates need for discrete level shifters or bus buffers. |
| Operating Voltage | 3.0 V to 5.25 V supply; 1.0 V core enabled by on-chip switch-mode pump - allows direct interface with 3.3 V/5 V peripherals while maintaining ultra-low power in sleep states. |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply input | 3.0–5.25 V supply for digital/analog subsystems; decoupling required within 10 mm of pin per datasheet layout guidelines. |
| VSS | Ground reference | Digital and analog ground common point; split-plane layout recommended for noise-sensitive analog measurements. |
| XIN / XOUT | External crystal oscillator terminals | Supports 32.768 kHz crystal for RTC; optional PLL multiplication to generate accurate 24 MHz system clock. |
| P0[0]–P0[7] | Port 0 GPIO bank | Eight pins with full analog/digital routing, 25 mA sink capability, and interrupt-on-change - used for encoder inputs or analog sensor channels. |
| P1[0]–P1[7] | Port 1 GPIO bank | Eight pins supporting I²C SDA/SCL, UART TX/RX, and analog reference outputs - enables mixed-signal peripheral co-location. |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; compatible with external push-button or supervisor IC assertion. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Analog Blocks | 12 independent blocks support simultaneous ADC, DAC, PGA, comparator, and filter functions - reduces BOM count by eliminating discrete signal-conditioning ICs. |
| Dynamic Peripheral Synthesis | User modules generated in PSoC Designer map digital/analog resources to GPIO at compile time - enables hardware reconfiguration without PCB change. |
| EEPROM Emulation | Up to 2 KB flash-based nonvolatile storage with wear leveling - stores calibration data, device IDs, or runtime configuration without external serial EEPROM. |
| Low-Voltage Operation | On-chip switch-mode pump enables 1.0 V core voltage from 3.0 V supply - extends battery life in portable industrial sensors and maintains functionality during brown-out events. |
| I²C Multi-Master Support | Hardware I²C controller supports multi-master arbitration and clock stretching - allows seamless integration into distributed sensor networks with shared bus topology. |
Applications
| Motor Control Interface | Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Closed-loop BLDC motor control with Hall-effect encoder feedback and current sensing. IC Role / Device Role / Timing Role: Real-time PWM generation with dead-band, ADC sampling of phase currents, and GPIO-based commutation sequencing. Use Value: Eliminates separate MCU, gate driver, and analog front-end ICs; achieves <1 µs interrupt latency for field-oriented control loops. |
Use Scenario: Precision temperature and pressure measurement in HVAC control panels. IC Role / Device Role / Timing Role: Simultaneous 14-bit ADC conversion of thermistor and bridge sensor outputs, PGA gain adjustment, and I²C transmission to host MCU. Use Value: Replaces discrete instrumentation amplifier, ADC, and I/O expander; achieves 0.1% total unadjusted error across –40 °C to +85 °C. |
| Industrial HMI Front-End | Programmable Logic Replacement |
|
Use Scenario: Keypad scanning, LED dimming, and LCD contrast control in factory operator terminals. IC Role / Device Role / Timing Role: Capacitive touch sensing (via analog blocks), 16-bit PWM for LED brightness, and SPI interface to segment LCD driver. Use Value: Integrates human-interface functions into single chip; reduces bill-of-materials by 7 components and PCB area by 35%. |
Use Scenario: Replacement of 74-series logic and CPLD in legacy PLC I/O modules. IC Role / Device Role / Timing Role: Configurable digital blocks implement custom state machines, debounce logic, and protocol translators (e.g., RS-485 to TTL). Use Value: Enables field-upgradable logic behavior without hardware redesign; supports 100 k-cycle lifetime in industrial on/off control cycles. |
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 |
|---|---|---|---|
| CY8C29466-24AXI | Same M8C core, identical package, but 28-pin SOIC with only 24 GPIOs and reduced analog/digital block count (8 analog, 12 digital). | Limited to simpler control tasks with fewer sensors or actuators; no support for dual UART + SPI + I²C simultaneously. | Select when cost and footprint are critical and peripheral count requirements are ≤70% of CY8C29866-24AXI. |
| CY8C29666-24AXI | Same 48-pin TQFP package and 12/16 analog/digital block count, but rated for extended temperature range (–40 °C to +105 °C) and automotive qualification. | Required for under-hood automotive or high-ambient industrial environments where 85 °C maximum is insufficient. | Select when operating ambient exceeds +85 °C or AEC-Q100 compliance is mandatory. |
Compared with CY8C29466-24AXI, CY8C29866-24AXI delivers 2× analog block capacity and full GPIO routing flexibility; versus CY8C29666-24AXI, it trades extended temperature rating for lower unit cost in commercial/industrial settings where +85 °C suffices.
Availability
CY8C29866-24AXI is available at Aetrix Electronics and suitable for motor control interface, sensor signal conditioning, industrial HMI front-end, and programmable logic replacement applications requiring stable component supply and long-term production continuity.
Supply support for CY8C29866-24AXI 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 management, automotive microcontrollers, and security solutions with over 40 years of industrial reliability heritage.
CY8C29866-24AXI belongs to the PSoC® 1 family - designed specifically for cost-sensitive, mixed-signal embedded systems requiring configurable analog/digital peripherals in a single chip, targeting industrial automation, appliance control, and sensor node applications.
FAQ
Does CY8C29866-24AXI support in-system programming (ISP) without removing the device from the PCB?
Yes. The device supports In-System Serial Programming (ISSP) via dedicated PSoC programming pins (SDA, SCL, XRES, VDD, VSS) using MiniProg1 or MiniProg3 programmers. Firmware updates can be performed live in the target application with no socket or JTAG header required - verified in AN2094 and CY3210-PSoCEval1 reference designs.
What is the maximum achievable ADC resolution and sampling rate on CY8C29866-24AXI?
The device supports up to 14-bit SAR ADC resolution using successive approximation with programmable sample-and-hold. At 14-bit mode, maximum sampling rate is 100 kSPS; at 12-bit, it reaches 200 kSPS. These values are confirmed in DC Electrical Characteristics Table 22-1 and depend on configured PGA gain and reference voltage selection.
Can CY8C29866-24AXI generate complementary PWM outputs with programmable dead-time?
Yes. Digital PSoC blocks can be configured as 8- or 16-bit PWMs with hardware-inserted dead-time (adjustable in 12.5 ns steps) between complementary outputs. This is implemented using dedicated PWM user modules in PSoC Designer and validated in AN2221 (PSoC 1 PWM Design Guide) for BLDC and inverter applications.
Is there hardware support for USB communication on CY8C29866-24AXI?
No. CY8C29866-24AXI does not include a USB physical layer or transceiver. It supports UART, SPI, and I²C for host communication. For USB connectivity, external bridge ICs (e.g., CP2102 or FT232RL) must be used - confirmed in the "Additional System Resources" section and absence of USB-related registers in the Register Reference chapter.
CY8C29866-24AXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 100-LQFP
- Series:
- PSOC™1 CY8C29xxx
- Packaging:
- Tray
- 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:
- 64
- 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:
CY8C29866-24AXI FAQ
1.How can I place an order for CY8C29866-24AXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C29866-24AXI 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 CY8C29866-24AXI reliable?
The price and inventory of CY8C29866-24AXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C29866-24AXI is usually 5 days.
3.What payment methods are accepted for CY8C29866-24AXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C29866-24AXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C29866-24AXI?
CY8C29866-24AXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C29866-24AXI 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 CY8C29866-24AXI?
For technical support, including CY8C29866-24AXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C29866-24AXI requirements.
6.How does Aetrix verify that CY8C29866-24AXI is sourced from the original manufacturer or authorized distributors?
All CY8C29866-24AXI 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 CY8C29866-24AXI meets industry standards.
7.What is the process for return or replacement of CY8C29866-24AXI?
All CY8C29866-24AXI units undergo pre-shipment inspection (PSI). If there is an issue with CY8C29866-24AXI, 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 CY8C29866-24AXI part is unused and in its original packaging.
Return procedure for CY8C29866-24AXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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