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Infineon Technologies CY8C28545-24AXIT
- Part No.:
- CY8C28545-24AXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
CY8C28545-24AXIT.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 44TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,926
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Product details
Overview
CY8C28545-24AXIT 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 configurable 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 up to 12 digital PSoC blocks, 12 analog PSoC blocks, two I²C interfaces, and three full-duplex UARTs - deployed in industrial sensor nodes and motor control subsystems.
For engineers reviewing the CY8C28545-24AXIT datasheet, CY8C28545-24AXIT pinout, CY8C28545-24AXIT application, or CY8C28545-24AXIT equivalent, key selection criteria include its 24 MHz M8C core timing, rail-to-rail analog block configurability (including SAR ADC up to 142 ksps), 25 mA GPIO sink capability, and support for in-system serial programming (ISSP™) without external debug hardware.
Technical Context
The CY8C28545-24AXIT implements a fixed-function M8C core with on-chip 24 MHz ±2.5% internal main oscillator (IMO), complemented by a 32.768 kHz ECO option for RTC and PLL-based clock synthesis. Its digital system uses up to 12 reconfigurable 8-bit digital PSoC blocks connected via global interconnects to all GPIOs.
Analog resources include up to 12 Type-2 analog blocks supporting SAR ADC (14-bit, 142 ksps with sample-and-hold), programmable gain amplifiers, comparators, and delta-sigma ADCs - all accessible through dedicated analog muxing and global analog interconnect routing independent of digital paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture, 24 MHz max - enables deterministic real-time control loops with 4 MIPS throughput. |
| Flash / SRAM | 16 KB flash (50,000 erase/write cycles), 1 KB SRAM - supports field-upgradable firmware and local data buffering. |
| Analog Blocks | Up to 12 Type-2 analog PSoC blocks - deliver configurable SAR ADC (14-bit, 142 ksps), DACs, PGAs, and filters in one chip. |
| Digital Blocks | Up to 12 digital PSoC blocks - enable user-defined 8–32-bit timers, PWMs, UARTs (3 full-duplex), SPI, and I²C (2 ports). |
| GPIO Drive | 25 mA sink / 10 mA source per pin, with pull-up/pull-down/strong/open-drain/analog modes - simplifies interface to LEDs, relays, and sensors. |
| Operating Range | 3.0 V to 5.25 V supply, –40 °C to +85 °C - validated for industrial automation and motor drive environments. |
| Clock Sources | Internal 24 MHz IMO (±2.5%), optional 32.768 kHz ECO + PLL, and low-power ILO - enables precise timing and low-power sleep modes. |
Pinout & Package
Package: 44-pin TQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply input | Accepts 3.0–5.25 V; powers core, analog, and digital blocks simultaneously. |
| VSS | Ground reference | Dual ground pins (VSS, VSSA) isolate analog/digital return paths to minimize noise coupling. |
| P0[0]–P0[7] | Port 0 bidirectional I/O | All pins support analog input, interrupt-on-change, and 25 mA sink - used for sensor acquisition and control outputs. |
| SCL / SDA | I²C bus interface | Dedicated pins for two independent I²C masters/slaves operating up to 400 kHz - connect to EEPROMs or environmental sensors. |
| XTAL_IN / XTAL_OUT | 32.768 kHz crystal interface | Connects external tuning fork crystal for RTC accuracy; enables PLL-based 24 MHz system clock generation. |
Key Features
| Feature | Design Value |
|---|---|
| In-system serial programming (ISSP™) | Enables firmware updates via 5-pin interface without removing device from PCB - reduces production test and field service cost. |
| Configurable analog blocks | Each Type-2 block can be set as SAR ADC, comparator, PGA, or filter - eliminates need for external signal-conditioning ICs. |
| Global digital/analog interconnect | Routing matrix connects any GPIO to any digital or analog block - allows dynamic peripheral reassignment in firmware. |
| Hardware I²C resources | Two independent I²C modules support slave/master/multi-master modes - enables daisy-chained sensor networks with no software bit-banging overhead. |
| Switched mode pump (SMP) | Generates internal 1.5 V supply from 3.0 V+ input - extends battery life in low-voltage operation without external DC-DC converter. |
Applications
| Industrial Motor Control | Capacitive Touch Interface |
|---|---|
Use Scenario: Closed-loop speed regulation of BLDC motors using hall-effect feedback and PWM-driven gate drivers. IC Role / Device Role / Timing Role: PSoC 1 acts as real-time motor controller - executes commutation logic, reads analog current sense, and generates synchronized 16-bit PWMs with dead-band. Use Value: Integrates ADC, PWM, and GPIO control in one die - reduces BOM count and PCB area vs. MCU + discrete analog front-end solution. | Use Scenario: Multi-button touch panel for HMI in HVAC control panels with proximity wake-up and water tolerance. IC Role / Device Role / Timing Role: Dedicated capacitive sensing engine using Type-E analog blocks - performs baseline tracking, noise rejection, and debounce in hardware. Use Value: Achieves <10 µA sleep current and sub-100 ms response time - meets IEC 61000-4-6 immunity requirements without external touch controller. |
| Programmable Power Supply Monitor | Modbus RTU Slave Node |
Use Scenario: Monitoring and logging voltage/current/temperature in 24 V industrial power supplies with fault latching. IC Role / Device Role / Timing Role: Mixed-signal data acquisition unit - samples analog rails via SAR ADC, computes RMS values, and triggers overvoltage interrupts. Use Value: 14-bit ADC resolution and on-chip voltage reference ensure ±0.5% measurement accuracy - eliminates calibration drift over temperature. | Use Scenario: Field device (e.g., flow meter) communicating via RS-485 Modbus RTU protocol in factory automation networks. IC Role / Device Role / Timing Role: Protocol-aware UART controller with hardware parity generation and frame timing - handles 9600–115200 bps Modbus framing without CPU intervention. Use Value: Full-duplex UART + CRC generator ensures error-free command execution and status reporting - meets IEC 61158 compliance for industrial comms. |
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 |
|---|---|---|---|
| CY8C28445-24AXI | Same package and core, but reduced analog block count (8 vs. 12) and no delta-sigma ADC support. | Suitable for simpler sensor readout without multi-channel synchronous sampling. | Select when analog resource demand is ≤8 blocks and SAR-only ADC suffices. |
| CY8C28645-24AXI | Includes enhanced analog routing and additional digital block features (e.g., extended PRS), same memory and clock specs. | Better suited for complex timing-critical systems requiring multiple synchronized PWMs and ADC triggers. | Choose when design requires deterministic cross-block synchronization not available in CY8C28545. |
Compared with CY8C28445-24AXI and CY8C28645-24AXI, the CY8C28545-24AXIT delivers balanced analog/digital resource allocation - offering full 12-analog-block capability without the extended routing complexity or cost premium of the CY8C286xx series.
Availability
CY8C28545-24AXIT is available at Aetrix Electronics and suitable for industrial motor control, capacitive touch HMI, programmable power monitoring, and Modbus RTU slave node designs requiring stable component supply and long-term manufacturing continuity.
Supply support for CY8C28545-24AXIT 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 AG is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global R&D and manufacturing infrastructure.
The CY8C28xxx PSoC 1 family was originally developed by Cypress Semiconductor and continues under Infineon's portfolio to serve cost-sensitive, mixed-signal embedded applications where programmable analog + digital integration replaces discrete component solutions.
FAQ
Does CY8C28545-24AXIT support USB connectivity?
No. The CY8C28545-24AXIT 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 - those integrate dedicated USB 2.0 transceivers and protocol stacks.
Can the internal 24 MHz oscillator meet timing-critical real-time control requirements?
Yes. The internal main oscillator (IMO) is specified at ±2.5% accuracy over temperature and voltage, sufficient for most closed-loop motor control and sensor sampling applications. For tighter timing, the device supports an external 32.768 kHz crystal with PLL multiplication to generate a crystal-referenced 24 MHz clock.
Is EEPROM emulation supported, and how is it implemented?
Yes. The device provides EEPROM emulation in flash memory using Cypress's Emulated EEPROM User Module. It leverages wear-leveling algorithms across designated flash sectors, delivering 100,000 write cycles and data retention >20 years at 85 °C - managed transparently via API calls without external memory.
What development tools are required to program and debug CY8C28545-24AXIT?
PSoC Designer™ (free Windows IDE) is required, along with MiniProg1 or MiniProg3 programmers. Debugging uses on-chip ICE with full-speed emulation, 128 KB trace memory, and configurable breakpoints - no external JTAG adapter needed. The CY3210-PSoCEval1 evaluation kit supports this device directly.
CY8C28545-24AXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 44-LQFP
- Series:
- PSOC™1 CY8C28xxx
- Packaging:
- Tape & Reel (TR)
- 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:
CY8C28545-24AXIT FAQ
1.How can I place an order for CY8C28545-24AXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C28545-24AXIT 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 CY8C28545-24AXIT reliable?
The price and inventory of CY8C28545-24AXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C28545-24AXIT is usually 5 days.
3.What payment methods are accepted for CY8C28545-24AXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C28545-24AXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C28545-24AXIT?
CY8C28545-24AXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C28545-24AXIT 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 CY8C28545-24AXIT?
For technical support, including CY8C28545-24AXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C28545-24AXIT requirements.
6.How does Aetrix verify that CY8C28545-24AXIT is sourced from the original manufacturer or authorized distributors?
All CY8C28545-24AXIT 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 CY8C28545-24AXIT meets industry standards.
7.What is the process for return or replacement of CY8C28545-24AXIT?
All CY8C28545-24AXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY8C28545-24AXIT, 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 CY8C28545-24AXIT part is unused and in its original packaging.
Return procedure for CY8C28545-24AXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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