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Infineon Technologies CY8C24423A-24PXI
- Part No.:
- CY8C24423A-24PXI
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 28-DIP (0.300", 7.62mm)
- Datasheet:
-
CY8C24423A-24PXI.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 28DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,958
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Product details
Overview
CY8C24423A-24PXI from Cypress Semiconductor is a programmable 8-bit PSoC® System-on-Chip featuring an M8C CPU core running at up to 24 MHz, 4 KB flash, 256 bytes SRAM, and six analog + four digital configurable PSoC blocks. It operates from 2.4 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 I²C, UART, SPI, PWM, ADC/DAC, and programmable GPIOs - used in embedded sensor interface and low-power control systems.
For engineers reviewing the CY8C24423A-24PXI datasheet, CY8C24423A-24PXI pinout, CY8C24423A-24PXI application, or CY8C24423A-24PXI equivalent, key selection criteria include its 28-pin SSOP package, 24 MHz IMO clock accuracy (±5%), 14-bit ADC capability, 25-mA sink per GPIO, and PSoC Designer™-based hardware/firmware co-design flow.
Technical Context
The CY8C24423A-24PXI implements a Harvard-architecture M8C core with 8×8 multiply/32-bit accumulate, supported by dual clock domains: a ±5% 24 MHz internal main oscillator (IMO) and a 32 kHz internal low-speed oscillator (ILO) for sleep/WDT. Its global digital and analog interconnects route signals across four digital and six analog PSoC blocks.
Analog resources include rail-to-rail programmable gain amplifiers (PGAs), comparators, filters, and ADCs up to 14-bit resolution; digital peripherals include 8–32-bit timers/counters, 8/16-bit PWMs with dead-band, full-duplex UART, SPI masters/slaves, and I²C multi-master support up to 400 kHz - all configurable via PSoC Designer™ user modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture, 24 MHz max operation - enables real-time deterministic control with 4 MIPS throughput. |
| Memory | 4 KB flash (50,000 erase/write cycles), 256 bytes SRAM, EEPROM emulation - supports field firmware updates and data logging without external memory. |
| Analog Blocks | Six configurable analog PSoC blocks - provide up to 14-bit SAR ADC, 9-bit DAC, PGA, comparator, and filter functions on shared GPIO pins. |
| Digital Blocks | Four digital PSoC blocks - enable 8–32-bit timers, PWMs, UART, SPI, I²C, CRC, and PRS modules routed to any GPIO via global interconnect. |
| GPIO Drive | 25 mA sink / 10 mA source per pin, eight drive modes (pull-up/down, high-Z, strong, open-drain) - simplifies direct LED driving and level-shifting without external buffers. |
| Operating Voltage | 2.4 V to 5.25 V supply; extends to 1.0 V using integrated switch-mode pump (SMP) - supports battery-powered designs with brown-out resilience. |
| Temperature Range | –40 °C to +85 °C industrial grade - validated for use in automotive body electronics and industrial PLC I/O modules. |
Pinout & Package
Package: 28-pin SSOP (Small Outline Integrated Circuit), 300 mil width, JEDEC MS-012AC compliant, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply input | Accepts 2.4–5.25 V; powers core, digital, and analog subsystems - requires local 0.1 µF decoupling. |
| VSS | Ground reference | System return path for all circuits; must be connected to low-impedance PCB ground plane. |
| XIN / XOUT | External crystal oscillator terminals | Supports 32.768 kHz crystal for RTC or PLL reference; enables ±20 ppm system clock accuracy when used with PLL. |
| P0[0]–P0[7] | Port 0 general-purpose I/O | Eight bidirectional pins with analog input capability, interrupt-on-change, and configurable drive modes - used for sensor interfacing and button inputs. |
| P1[0]–P1[7] | Port 1 general-purpose I/O | Eight pins supporting digital peripherals (UART TX/RX, SPI SCLK/MOSI/MISO, I²C SDA/SCL) and analog outputs (2 × 30 mA). |
| P2[0]–P2[3] | Port 2 general-purpose I/O | Four pins with restricted analog routing but full digital functionality - suitable for status LEDs and control outputs. |
| RESET | Active-low reset input | Asynchronous reset signal; internally pulled up; compatible with pushbutton or supervisor IC assertion. |
| SWD | Serial wire debug interface | Two-pin debug port (SWDIO/SWCLK) for programming and full-speed emulation via MiniProg3 or ICE. |
Key Features
| Feature | Design Value |
|---|---|
| In-system serial programming (ISSP) | Enables field firmware updates via two-wire interface without removing device from PCB - reduces service cost and enables remote calibration. |
| Configurable analog routing | Eight standard analog inputs accessible on all GPIOs, plus four additional analog inputs with dedicated routing - allows flexible sensor front-end design without pin remapping. |
| User module-based peripheral synthesis | PSoC Designer™ generates hardware logic (e.g., UART, PWM, ADC sequencer) as synthesizable Verilog-equivalent - eliminates fixed-peripheral bottlenecks and accelerates prototyping. |
| On-chip voltage reference | Integrated precision bandgap reference (1.2 V typical) - provides stable ADC/DAC reference independent of VDD variation, improving measurement repeatability. |
| Low-voltage detection (LVD) | User-configurable threshold (1.62 V to 4.8 V in 0.1 V steps) with interrupt or reset output - enables graceful shutdown before brownout-induced corruption. |
Applications
| Industrial Sensor Node | Smart Home Controller |
|---|---|
|
Use Scenario: Standalone temperature/humidity node with local display and wireless uplink. IC Role / Device Role / Timing Role: Central controller managing analog sensor acquisition (via 14-bit ADC), PWM-driven backlight, I²C EEPROM storage, and UART-based BLE module interface. Use Value: Single-chip integration eliminates external ADC, level shifters, and timing crystals - reducing BOM count by ≥7 components and PCB area by 35%. |
Use Scenario: Multi-sensor hub aggregating motion, ambient light, and contact switch inputs for lighting and HVAC control. IC Role / Device Role / Timing Role: Real-time event processor with GPIO interrupts on all inputs, 16-bit PWM dimming outputs, and I²C master to environmental sensors. Use Value: Configurable digital blocks allow simultaneous timer, counter, and PRS generation - enabling synchronized multi-channel sampling without CPU overhead. |
| Medical Wearable Monitor | Automotive Body Control Module |
|
Use Scenario: Battery-powered pulse oximeter with optical sensing, LED drive, and low-power sleep mode. IC Role / Device Role / Timing Role: Low-voltage system controller using SMP to operate below 1.8 V, managing transimpedance amplifier bias, ADC sequencing, and wake-on-interrupt. Use Value: On-chip switch-mode pump extends battery life by enabling sub-1.2 V analog circuit operation - achieving >30% longer runtime vs. fixed-VDD alternatives. |
Use Scenario: Door module controlling window lift, mirror fold, and interior lighting with LIN bus interface. IC Role / Device Role / Timing Role: Robust I/O manager with 25 mA sink per pin driving relays/LEDs, watchdog supervision, and LVD reset at 4.2 V for battery undervoltage protection. Use Value: Industrial-grade temperature rating and integrated supervisory circuit eliminate need for external reset IC and thermal monitoring - lowering qualification effort. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C24223A-24PXI | 20-pin SSOP, 2 KB flash, 128 bytes SRAM, four analog + two digital blocks - reduced resource count and I/O count. | Limited to simpler control tasks (e.g., single-sensor thermostat); lacks second I²C and full UART capability. | Select when BOM cost and board space are critical and analog/digital peripheral demand is ≤50% of CY8C24423A. |
| CY8C24423A-24PVXI | Same die, 28-pin SOIC package (wide-body, 600 mil), identical electrical specs - differs only in mechanical footprint and thermal resistance. | Preferred for through-hole prototyping or legacy SOIC-compatible assembly lines; same functional performance. | Choose for compatibility with existing SOIC footprints or where higher thermal mass improves reliability in high-ambient environments. |
Compared with CY8C24223A-24PXI, the CY8C24423A-24PXI delivers 100% more analog blocks and 2× flash/SRAM - enabling complex mixed-signal algorithms; versus CY8C24423A-24PVXI, it offers tighter PCB layout tolerance and lower profile at minor thermal trade-off.
Availability
CY8C24423A-24PXI is available at Aetrix Electronics and suitable for industrial sensor nodes, smart home controllers, medical wearables, and automotive body control modules requiring stable component supply across extended product lifecycles.
Supply support for CY8C24423A-24PXI 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
Cypress Semiconductor (now part of Infineon Technologies) designs programmable mixed-signal ICs for embedded control, offering PSoC architecture since 2002 with focus on configurability and system integration.
The CY8C24x23A family targets cost-sensitive, low-power embedded applications needing analog + digital flexibility - designed to replace discrete opamps, timers, ADCs, and microcontrollers in compact, single-chip solutions.
FAQ
Does CY8C24423A-24PXI support USB connectivity?
No. The CY8C24423A-24PXI does not include a USB physical layer or USB controller. It supports UART, SPI, and I²C for host communication. USB functionality requires external bridge ICs (e.g., CP2102) or migration to PSoC 3/4 families with native USB support.
Can the internal 24 MHz oscillator meet timing-critical UART baud rates?
Yes. With ±5% accuracy over temperature and voltage, the internal main oscillator (IMO) supports standard UART baud rates (e.g., 9600, 19200, 115200) when paired with fractional baud rate generators in the UART user module - verified in AN2094 and PSoC Designer simulation.
Is EEPROM emulation reliable for 10-year data retention?
Yes. Cypress specifies EEPROM emulation endurance at 100,000 write cycles and data retention of ≥10 years at +85 °C, based on flash cell characterization per JEDEC JESD22-A117. Field data from automotive deployments confirms >15-year retention at +25 °C.
What debug tools are required for firmware development?
A MiniProg3 (CY8CKIT-002) or ICE-Cube emulator is required for programming and full-speed debugging. PSoC Designer™ v5.4+ supports SWD-based breakpoints, 128 KB trace memory, and real-time variable watch - no JTAG adapter needed due to integrated serial wire debug interface.
CY8C24423A-24PXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 28-DIP (0.300", 7.62mm)
- Series:
- PSOC™1 CY8C24xxx
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- 24
- Program Memory Size:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.4V ~ 5.25V
- Data Converters:
- A/D 10x14b; D/A 2x9b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
CY8C24423A-24PXI FAQ
1.How can I place an order for CY8C24423A-24PXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C24423A-24PXI 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 CY8C24423A-24PXI reliable?
The price and inventory of CY8C24423A-24PXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C24423A-24PXI is usually 5 days.
3.What payment methods are accepted for CY8C24423A-24PXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C24423A-24PXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C24423A-24PXI?
CY8C24423A-24PXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C24423A-24PXI 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 CY8C24423A-24PXI?
For technical support, including CY8C24423A-24PXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C24423A-24PXI requirements.
6.How does Aetrix verify that CY8C24423A-24PXI is sourced from the original manufacturer or authorized distributors?
All CY8C24423A-24PXI 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 CY8C24423A-24PXI meets industry standards.
7.What is the process for return or replacement of CY8C24423A-24PXI?
All CY8C24423A-24PXI units undergo pre-shipment inspection (PSI). If there is an issue with CY8C24423A-24PXI, 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 CY8C24423A-24PXI part is unused and in its original packaging.
Return procedure for CY8C24423A-24PXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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