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Infineon Technologies CY8C28445-24PVXIT
- Part No.:
- CY8C28445-24PVXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
CY8C28445-24PVXIT.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,281
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Product details
Overview
CY8C28445-24PVXIT from Infineon Technologies (formerly Cypress Semiconductor) is a programmable System-on-Chip (PSoC® 1) featuring an M8C 8-bit Harvard architecture CPU, 16 KB flash, 1 KB SRAM, and reconfigurable analog/digital blocks. It operates from 3.0 V to 5.25 V at up to 24 MHz, supports industrial temperature range (–40 °C to +85 °C), and integrates dual I²C, up to three full-duplex UARTs, and rail-to-rail analog resources for embedded control in sensor interfaces and motor management.
For engineers reviewing the CY8C28445-24PVXIT datasheet, CY8C28445-24PVXIT pinout, CY8C28445-24PVXIT application, or CY8C28445-24PVXIT equivalent, key selection criteria include its 24 MHz M8C core speed, 16 KB flash endurance (50,000 erase/write cycles), configurable GPIO drive modes (25 mA sink/10 mA source), integrated switched-mode pump for 1.5 V operation, and support for SAR ADC up to 142 ksps with sample-and-hold.
Technical Context
This PSoC 1 device implements a fixed-function M8C CPU core with on-chip 24 MHz ±2.5% internal main oscillator (IMO) and optional 32.768 kHz crystal input for RTC or PLL-based clock synthesis. Its digital system uses up to 12 reconfigurable 8-bit digital blocks connected via global interconnects to support user-defined peripherals including PWMs, timers, UARTs, SPI, and CRC modules.
The analog system includes up to 12 Type-2 analog blocks supporting 14-bit SAR ADCs, 9-bit DACs, programmable gain amplifiers, and comparators - all accessible through analog multiplexing and configurable references. All GPIOs support analog input, 30 mA analog output drive, and interrupt-on-change functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture, 24 MHz max clock - enables deterministic real-time control without external timing components |
| Flash Memory | 16 KB with 50,000 erase/write cycles - supports field firmware updates and EEPROM emulation |
| SRAM | 1 KB data memory - sufficient for stack, variables, and small buffers in compact embedded applications |
| Operating Voltage | 3.0 V to 5.25 V; down to 1.5 V with on-chip switched-mode pump - allows direct battery operation (e.g., single Li-ion or 2×AA) |
| ADC Performance | SAR ADC up to 142 ksps with sample-and-hold - suitable for precision sensor sampling in closed-loop systems |
| Digital Peripherals | Up to 3 full-duplex UARTs, 6 half-duplex UARTs, 2 I²C masters/slaves, variable-length SPI - enables multi-protocol communication without external transceivers |
| GPIO Drive | 25 mA sink / 10 mA source per pin, 8 configurable drive modes - eliminates need for external level shifters or buffer ICs in many I/O interfaces |
Pinout & Package
Package: 28-pin SSOP (Small Outline Integrated Circuit, Plastic, Shrink), body width 5.3 mm, lead pitch 0.65 mm, JEDEC MO-153 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply input | Accepts 3.0–5.25 V; powers core, digital blocks, and analog reference circuitry |
| VSS | Ground reference | Common return path for all digital and analog circuits; requires low-impedance PCB connection |
| XIN/XOUT | External crystal oscillator terminals | Supports 32.768 kHz crystal for RTC or precise clock generation; optional ECO input |
| P0[0]–P0[7] | Port 0 general-purpose I/O | All pins support analog input, interrupt-on-change, and 25 mA sink capability |
| P1[0]–P1[7] | Port 1 general-purpose I/O | Configurable as digital or analog; each supports pull-up/pull-down and open-drain modes |
| P2[0]–P2[7] | Port 2 general-purpose I/O | Includes dedicated analog block routing; usable for capacitive sensing or comparator inputs |
| RESET | Active-low reset input | Asynchronous reset signal; internally pulled up; compatible with pushbutton or supervisor ICs |
| SWD | Serial Wire Debug interface | Enables programming and debugging via MiniProg3; shares pin with P1[6] |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable Analog Blocks | Up to 12 Type-2 blocks enable SAR ADC, DAC, PGA, and comparator configurations - reduces BOM count by replacing discrete signal-conditioning ICs |
| Flexible Clocking | Internal 24 MHz IMO ±2.5%, optional 32.768 kHz ECO, and PLL - eliminates external crystal for most timing-critical functions |
| In-System Serial Programming | ISSP-compatible via SWD - allows firmware updates in final assembly or field without removing the chip |
| Programmable GPIO Drive Modes | 8 modes per pin including strong, open-drain, high-Z, and pull-up/down - simplifies interface to diverse logic families and sensors |
| Capacitive Sensing Support | Dual-channel capsense capability in Type-E analog blocks - enables touch-button and proximity detection without external controllers |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop speed regulation of BLDC motors using hall-effect feedback and PWM-driven gate drivers. IC Role / Device Role / Timing Role: Central controller executing commutation logic, ADC sampling of current/voltage, and real-time PWM generation with dead-band control. Use Value: On-chip 142 ksps SAR ADC and synchronized PWM outputs eliminate external ADC and timer ICs, reducing latency and board area. | Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and gas concentration with wireless telemetry. IC Role / Device Role / Timing Role: Signal acquisition hub performing analog front-end conditioning, digital filtering, and UART/I²C protocol bridging to BLE module. Use Value: 1.5 V operation via SMP and ultra-low-power sleep modes extend battery life beyond 2 years on coin-cell power. |
| Human-Machine Interface | Power Supply Monitoring |
Use Scenario: Touch-sensitive control panel for HVAC or lighting systems with LED status feedback and button press haptics. IC Role / Device Role / Timing Role: Capacitive sensing engine with built-in debouncing, LED driver, and serial command interpreter. Use Value: Integrated Type-E analog blocks provide robust capsense with noise immunity, eliminating dedicated touch controller ICs and associated firmware overhead. | Use Scenario: Real-time monitoring of input/output voltages, current, and temperature in AC-DC and DC-DC converters. IC Role / Device Role / Timing Role: Analog monitor collecting multiple voltage rails via multiplexed ADC inputs and triggering fault response via GPIO or UART alert. Use Value: Rail-to-rail analog input range and programmable voltage references ensure accurate measurement across ±10% supply variation without external scaling resistors. |
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 |
|---|---|---|---|
| CY8C28445-24PVXI | Same die, non-tape-and-reel packaging (bulk/tray); no Pb-free compliance marking | Lacks RoHS-compliant finish and reel packaging - unsuitable for automated SMT lines requiring lead-free process control | Select only for prototyping or manual assembly where Pb-free compliance is not required |
| CY8C28445-24LFXIT | Same functional spec, but in 44-pin QFP package with different pin mapping and thermal pad | Higher pin count enables more analog/digital resource access but requires larger PCB footprint and different layout | Choose when additional GPIOs or dedicated analog routing paths are needed beyond 28-pin SSOP constraints |
Compared with CY8C28445-24PVXIT, the bulk-packaged CY8C28445-24PVXI lacks RoHS compliance for production use, while the QFP-packaged CY8C28445-24LFXIT trades compactness for expanded I/O routing flexibility - both retain identical M8C core performance and peripheral configuration capability.
Availability
CY8C28445-24PVXIT is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, human-machine interfaces, and power supply monitoring requiring stable component supply across extended product lifecycles.
Supply support for CY8C28445-24PVXIT 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, industrial, and IoT solutions.
CY8C28445 belongs to the PSoC® 1 family - Infineon's legacy programmable mixed-signal SoC platform designed for cost-sensitive, low-power embedded control applications requiring analog integration and field-upgradable firmware.
FAQ
Is CY8C28445-24PVXIT supported by current development tools?
Yes. PSoC Designer™ v5.4 remains the official IDE for CY8C28xxx devices and is fully supported by Infineon for legacy design maintenance. The MiniProg3 programmer/debugger is compatible and provides ISSP, SWD, and full-speed emulation. No newer IDE replaces this toolchain for PSoC 1 devices.
What is the maximum ADC sampling rate achievable with hardware synchronization?
The SAR ADC achieves up to 142 ksps with sample-and-hold enabled and configured in continuous mode using the internal 24 MHz IMO clock. Synchronization across multiple channels is supported via global digital interconnect triggers, enabling phase-aligned sampling for multi-sensor acquisition.
Does CY8C28445-24PVXIT support true hardware I²C multi-master operation?
Yes. Both integrated I²C resources support full multi-master arbitration per SMBus 2.0 specification, including START/STOP condition detection, clock stretching, and collision resolution - verified in silicon and documented in the PSoC 1 TRM section 12.3.2.
Can the switched-mode pump operate below 3.0 V supply?
No. The switched-mode pump (SMP) requires minimum VDD = 3.0 V to generate regulated 1.5 V or 3.0 V auxiliary supplies. Below 3.0 V, the device enters brown-out reset; operation at 1.5 V is only possible when SMP is active and VDD ≥ 3.0 V.
CY8C28445-24PVXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Series:
- PSOC™1 CY8C28xxx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 24
- 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:
CY8C28445-24PVXIT FAQ
1.How can I place an order for CY8C28445-24PVXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C28445-24PVXIT 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 CY8C28445-24PVXIT reliable?
The price and inventory of CY8C28445-24PVXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C28445-24PVXIT is usually 5 days.
3.What payment methods are accepted for CY8C28445-24PVXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C28445-24PVXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C28445-24PVXIT?
CY8C28445-24PVXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C28445-24PVXIT 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 CY8C28445-24PVXIT?
For technical support, including CY8C28445-24PVXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C28445-24PVXIT requirements.
6.How does Aetrix verify that CY8C28445-24PVXIT is sourced from the original manufacturer or authorized distributors?
All CY8C28445-24PVXIT 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 CY8C28445-24PVXIT meets industry standards.
7.What is the process for return or replacement of CY8C28445-24PVXIT?
All CY8C28445-24PVXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY8C28445-24PVXIT, 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 CY8C28445-24PVXIT part is unused and in its original packaging.
Return procedure for CY8C28445-24PVXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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