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Infineon Technologies CY8C28533-24AXI
- Part No.:
- CY8C28533-24AXI
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
CY8C28533-24AXI.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 44TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,502
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Product details
Overview
CY8C28533-24AXI from Infineon Technologies (formerly Cypress Semiconductor) is a programmable System-on-Chip (PSoC® 1) featuring an M8C 8-bit Harvard architecture CPU running at up to 24 MHz, 16 KB flash, 1 KB SRAM, and reconfigurable analog/digital blocks for mixed-signal embedded control. It operates from 3.0 V to 5.25 V across –40 °C to +85 °C and integrates dual I²C, up to three full-duplex UARTs, and rail-to-rail analog resources including SAR ADCs up to 142 ksps - used in industrial sensor interface and motor control subsystems.
For engineers reviewing the CY8C28533-24AXI datasheet, CY8C28533-24AXI pinout, CY8C28533-24AXI application, or CY8C28533-24AXI equivalent, key selection criteria include verified 24 MHz IMO accuracy (±2.5%), configurable GPIO drive modes (25 mA sink), on-chip switched-mode pump for 1.5 V operation, and PSoC Designer™-based analog block routing for capacitive sensing or precision signal conditioning.
Technical Context
The CY8C28533-24AXI implements a fixed-function M8C core with dedicated instruction and data buses, supporting 8×8 multiply and 32-bit accumulate operations. Its digital system uses up to 12 programmable 8-bit digital blocks connected via global interconnects to support composite peripherals like synchronized PWMs with dead-band or multi-master I²C.
Analog functionality relies on up to 12 Type-2 PSoC blocks offering SAR ADCs (14-bit, 142 ksps), programmable gain amplifiers, and delta-sigma ADCs, all routed through analog muxing and global analog interconnect - enabling simultaneous high-speed sampling and low-noise signal conditioning without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture, 24 MHz max - enables deterministic real-time control with four MIPS throughput. |
| Flash / SRAM | 16 KB flash (50,000 erase/write cycles), 1 KB SRAM - supports field-upgradable firmware and transient data buffering. |
| Analog ADC | SAR ADC up to 14-bit resolution, 142 ksps with sample-and-hold - suitable for precision current/voltage monitoring in power supplies. |
| Digital Peripherals | Up to 3 full-duplex UARTs, 2 I²C masters/slaves, 6 half-duplex UARTs - enables multi-protocol communication in industrial HMI nodes. |
| GPIO Drive | 25 mA sink / 10 mA source per pin, 8 configurable drive modes - directly interfaces LEDs, relays, and logic-level sensors without external buffers. |
| Operating Voltage | 3.0 V to 5.25 V; down to 1.5 V using on-chip switched-mode pump - supports battery-backed operation and wide-input industrial rails. |
| Temperature Range | –40 °C to +85 °C industrial grade - validated for use in motor drives and factory automation enclosures. |
Pinout & Package
CY8C28533-24AXI is housed in a 44-pin TQFP (7 mm × 7 mm, 0.8 mm pitch) package with exposed thermal pad. Pin functions are fully configurable via PSoC Designer™; all GPIOs support analog input, interrupt generation, and multiple drive modes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Primary 3.0–5.25 V domain; decoupling required within 10 mm of pins for stable 24 MHz operation. |
| XIN, XOUT | 32.768 kHz crystal oscillator terminals | Supports RTC and precise clock derivation; requires 12.5 pF load capacitance per datasheet Figure 19. |
| P0[0]–P0[7] | Port 0 general-purpose I/O | Configurable as analog input, digital peripheral interface, or interrupt source - routed to analog/digital interconnects. |
| SCL, SDA | I²C bus signals (Port 3) | Dedicated hardware I²C resources support master/slave/multi-master modes up to 400 kHz - no bit-banging overhead. |
| TXD0, RXD0 | UART0 transmit/receive | Full-duplex UART with hardware FIFO and parity support - enables robust serial telemetry in noisy environments. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable Analog Blocks | Up to 12 Type-2 blocks enable SAR ADCs, PGAs, and comparators - eliminates need for discrete op-amps or ADC ICs in sensor front-ends. |
| Switched-Mode Pump (SMP) | Generates internal 1.5 V supply from main VDD - allows ultra-low-voltage operation while retaining full flash/SRAM functionality. |
| Global Digital Interconnect | Routes any digital block output to any GPIO - supports custom timer/PWM combinations without PCB trace rerouting. |
| In-System Serial Programming | ISSP™ interface enables firmware updates over two pins (SDA/SCL) - reduces production test complexity and supports field patches. |
| Capacitive Sensing Support | Dual-channel CSD blocks with built-in IDACs and scanning logic - implements touch buttons/sliders without external RC networks. |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop speed regulation of 3-phase BLDC motors using hall-effect feedback and PWM-driven gate drivers. IC Role / Device Role / Timing Role: Central controller executing commutation logic, ADC-based current sampling, and real-time fault detection with <1 µs interrupt latency. Use Value: On-chip 142 ksps SAR ADC captures phase current waveforms; configurable PWM blocks generate synchronized gate signals with programmable dead-time. | Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and CO₂ via analog and digital sensors. IC Role / Device Role / Timing Role: Signal conditioner, protocol translator, and low-power scheduler managing wake/sleep cycles via ILO and watchdog timers. Use Value: SMP enables 1.5 V operation extending battery life; dual I²C interfaces concurrently read HTU21D and CCS811 sensors without arbitration conflicts. |
| Programmable Power Supply | Human-Machine Interface |
Use Scenario: Digitally adjustable DC-DC converter with voltage/current limiting, soft-start, and thermal foldback. IC Role / Device Role / Timing Role: Precision analog supervisor interfacing with DAC-controlled reference and isolated feedback paths. Use Value: Programmable gain amplifiers condition isolated shunt voltage; 14-bit ADC resolves 0.1% output regulation error over 0–30 V range. | Use Scenario: Touch-enabled control panel for HVAC systems with LED status indicators and rotary encoder input. IC Role / Device Role / Timing Role: Capacitive touch processor, LED driver, and serial bridge to main MCU via UART/I²C. Use Value: Integrated CSD blocks detect 12-button overlay; 25 mA sink capability directly drives common-anode LED arrays without external transistors. |
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 |
|---|---|---|---|
| CY8C28443-24AXI | Fewer analog blocks (8 vs. 12), no delta-sigma ADC support - reduced analog channel count and filtering capability. | Suitable for simpler sensor interfaces without multi-channel synchronous sampling. | Select when cost sensitivity outweighs need for advanced analog features like synchronized delta-sigma conversion. |
| CY8C28643-24AXI | Higher analog resource count (16 blocks), includes additional Type-E blocks for capacitive sensing - adds dual-channel CSD and 10-bit ADCs. | Better suited for complex touch HMI or multi-sensor fusion requiring dedicated CSD hardware. | Choose when design requires >12 analog channels or integrated capacitive sensing with IDAC calibration. |
Compared with CY8C28443-24AXI, CY8C28533-24AXI provides balanced analog/digital resources for mid-complexity control; versus CY8C28643-24AXI, it trades capacitive sensing headroom for lower unit cost and smaller footprint - ideal for industrial analog front-ends where CSD is not required.
Availability
CY8C28533-24AXI is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and programmable power supplies requiring stable component supply, long-term lifecycle support, and qualified automotive-grade alternatives.
Supply support for CY8C28533-24AXI 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 MCUs, and secure connectivity solutions.
CY8C28533-24AXI belongs to the PSoC® 1 family - a legacy programmable mixed-signal SoC platform designed for cost-sensitive, low-power embedded control applications requiring analog integration and field-programmable flexibility without ARM licensing overhead.
FAQ
Does CY8C28533-24AXI support USB connectivity?
No. CY8C28533-24AXI does not include native USB PHY or controller hardware. Communication is limited to UART, SPI, and I²C interfaces. USB functionality requires external bridge ICs such as CP2102 or FT232RL, or migration to PSoC 3/4 families with integrated USB.
What development tools are required to program CY8C28533-24AXI?
PSoC Designer™ v5.4 is the official IDE, supporting schematic-based peripheral configuration and C code generation. Programming requires MiniProg1 or MiniProg3 debuggers. No JTAG adapter is needed - ISSP™ uses SDA/SCL pins for in-system programming and debugging.
Can CY8C28533-24AXI operate below 3.0 V?
Yes - down to 1.5 V using the on-chip switched-mode pump (SMP). At sub-3.0 V operation, the SMP boosts internal voltage to sustain flash programming, SRAM retention, and M8C execution. Full 24 MHz performance is only guaranteed above 3.0 V; SMP mode limits CPU speed to 12 MHz.
Is there hardware support for capacitive sensing on CY8C28533-24AXI?
Yes - it includes two Type-E analog blocks dedicated to capacitive sensing (CSD), each supporting dual-channel scanning, IDAC-based charge transfer, and automatic baseline tracking. These blocks are separate from the 12 Type-2 analog blocks and do not consume them, enabling concurrent touch and signal conditioning tasks.
CY8C28533-24AXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 44-LQFP
- Series:
- PSOC™1 CY8C28xxx
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- M8C
- Core Size:
- 8-Bit
- Speed:
- 24MHz
- Connectivity:
- I2C, IrDA, SPI, UART/USART
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 40
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.25V
- Data Converters:
- A/D 4x14b; D/A 4x9b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C28533-24AXI FAQ
1.How can I place an order for CY8C28533-24AXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C28533-24AXI 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 CY8C28533-24AXI reliable?
The price and inventory of CY8C28533-24AXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C28533-24AXI is usually 5 days.
3.What payment methods are accepted for CY8C28533-24AXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C28533-24AXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C28533-24AXI?
CY8C28533-24AXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C28533-24AXI 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 CY8C28533-24AXI?
For technical support, including CY8C28533-24AXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C28533-24AXI requirements.
6.How does Aetrix verify that CY8C28533-24AXI is sourced from the original manufacturer or authorized distributors?
All CY8C28533-24AXI 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 CY8C28533-24AXI meets industry standards.
7.What is the process for return or replacement of CY8C28533-24AXI?
All CY8C28533-24AXI units undergo pre-shipment inspection (PSI). If there is an issue with CY8C28533-24AXI, 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 CY8C28533-24AXI part is unused and in its original packaging.
Return procedure for CY8C28533-24AXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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