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Infineon Technologies CY8C24123A4-24SXI
- Part No.:
- CY8C24123A4-24SXI
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY8C24123A4-24SXI.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,069
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Product details
Overview
CY8C24123A4-24SXI from Cypress Semiconductor is a programmable 8-bit PSoC® System-on-Chip featuring an M8C CPU core, 4 KB flash, 256 bytes SRAM, and configurable analog/digital blocks. It operates from 2.4 V to 5.25 V (down to 1.0 V with SMP), supports up to 24 MHz clocking, and delivers rail-to-rail analog functions including 14-bit ADCs, 9-bit DACs, and PGAs - deployed in industrial sensor interface and low-power embedded control.
For engineers reviewing the CY8C24123A4-24SXI datasheet, CY8C24123A4-24SXI pinout, CY8C24123A4-24SXI application, or CY8C24123A4-24SXI equivalent, key selection criteria include its 28-pin SOIC package, 24 MHz M8C processor speed, ±5% internal oscillator accuracy, 25-mA GPIO sink capability, and integrated I²C/SPI/UART peripherals for mixed-signal system integration.
Technical Context
The CY8C24123A4-24SXI implements a Harvard-architecture M8C core with 4 KB flash and 256-byte SRAM, supporting ISSP and partial flash updates. Its digital system integrates four 8-bit PSoC blocks enabling configurable 8–32-bit timers, PWMs, UART, SPI, and I²C (up to 400 kHz).
The analog system comprises six rail-to-rail PSoC blocks delivering programmable gain amplifiers, 14-bit SAR ADCs, 9-bit DACs, comparators, and filters - all routed via global analog interconnect to eight standard analog-capable GPIOs and two 30 mA analog outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture, 24 MHz max operation - enables real-time deterministic control at 4 MIPS. |
| Flash Memory | 4 KB program flash with 50,000 erase/write cycles and 4-level block protection - supports firmware updates and IP security. |
| SRAM | 256 bytes data RAM - sufficient for small embedded state machines and sensor buffering. |
| Analog Blocks | Six configurable analog PSoC blocks - provide simultaneous ADC, DAC, PGA, comparator, and filter functions without external components. |
| Digital Blocks | Four 8-bit digital PSoC blocks - combine to form 8–32-bit timers, PWMs, UART, SPI, and CRC modules. |
| GPIO Drive | 25 mA sink / 10 mA source per pin, with pull-up/pull-down/high-Z/open-drain modes - simplifies direct LED driving and level-shifting. |
| Operating Voltage | 2.4 V to 5.25 V supply; extends to 1.0 V using on-chip switch-mode pump - enables battery-powered operation down to single-cell Li-ion. |
Pinout & Package
Package: 28-pin SOIC (Small Outline Integrated Circuit), 300 mil width, RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Main 2.4–5.25 V supply rail; powers core, analog, and digital systems. |
| VSS | Ground reference | Digital and analog common ground; requires low-impedance connection for noise-sensitive analog operation. |
| P0[0]–P0[7] | General-purpose I/O port 0 | Eight pins with full analog/digital routing, interrupt capability, and 25 mA sink - used for sensor inputs, LED drivers, or communication lines. |
| P1[0]–P1[7] | General-purpose I/O port 1 | Eight pins supporting analog inputs, I²C, SPI, and UART functions - configurable as open-drain for I²C bus pull-up. |
| P2[0]–P2[7] | General-purpose I/O port 2 | Five pins available (P2[0]–P2[4]); support analog outputs (2×30 mA), ECO crystal input, and reset - critical for precision timing and analog output stages. |
| XRES | External reset input | Active-low asynchronous reset pin; debounced internally - enables reliable power-on and fault recovery. |
| ECO | External crystal oscillator input | Accepts 32.768 kHz crystal for RTC or PLL reference - enables ±20 ppm timing accuracy when paired with PLL for 24 MHz system clock. |
Key Features
| Feature | Design Value |
|---|---|
| In-system serial programming (ISSP) | Enables field firmware updates via two-wire interface without removing device from PCB. |
| Configurable analog blocks | Supports re-purposing of same hardware resources for ADC, DAC, PGA, or comparator - reduces BOM count and layout area. |
| Global digital/analog interconnect | Allows any signal from any block to route to any GPIO - eliminates fixed peripheral pin constraints and accelerates prototyping. |
| On-chip voltage reference | Provides stable 1.2 V or 2.4 V reference for ADC/DAC calibration - removes need for external precision reference ICs. |
| User-configurable LVD | Programmable low-voltage detection thresholds (1.62 V to 4.62 V) with interrupt generation - prevents erratic operation during brown-out conditions. |
Applications
| Industrial Sensor Interface | Smart Home Controller |
|---|---|
Use Scenario: Reading thermistor, RTD, and pressure transducer signals in factory automation nodes. IC Role / Device Role / Timing Role: Mixed-signal front-end with programmable PGA gain, 14-bit ADC conversion, and I²C master to MCU host. Use Value: Eliminates external signal-conditioning opamps and reference ICs while maintaining <±0.1% measurement linearity across –40°C to +85°C. | Use Scenario: Managing touch buttons, LED dimming, and environmental sensors in battery-powered smart switches. IC Role / Device Role / Timing Role: Low-power system controller with CapSense®-compatible GPIOs, PWM-driven LEDs, and sleep-mode wake-on-interrupt. Use Value: Achieves <2 µA deep-sleep current and 24 MHz active performance - extends coin-cell life beyond 2 years. |
| Medical Wearable Monitor | Automotive Body Control Module |
Use Scenario: Signal acquisition and preprocessing for optical heart-rate monitoring (PPG) in wrist-worn devices. IC Role / Device Role / Timing Role: Analog front-end with synchronized 9-bit DAC-driven LED driver and 14-bit ADC for photodiode input. Use Value: Enables precise LED current control (±1%) and high-SNR analog sampling without external DAC or opamp feedback networks. | Use Scenario: Controlling interior lighting, mirror heaters, and door lock actuators in entry-level vehicles. IC Role / Device Role / Timing Role: Cost-optimized body controller with 16-bit PWM dimming, LIN/I²C slave interface, and watchdog supervision. Use Value: Integrates 8-channel GPIO control, 4× PWM outputs, and EEPROM emulation in one 28-pin SOIC - reduces component count by 3+ ICs. |
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 |
|---|---|---|---|
| CY8C24223A-24SXI | Same core, 8 KB flash (vs. 4 KB), identical pinout and peripherals - adds firmware storage headroom. | Better suited for applications requiring larger firmware images or dual-bank bootloading. | Select when future firmware growth or OTA update capability is required; otherwise CY8C24123A4-24SXI offers optimal cost/performance balance. |
| CY8C24423A-24SXI | Same core, 16 KB flash, 512-byte SRAM, and enhanced analog routing - supports more concurrent analog functions. | Required for designs needing >6 analog channels or simultaneous multi-channel ADC+DAC+PGA operation. | Choose only if additional memory or analog resource density is confirmed necessary; over-specification increases BOM cost unnecessarily. |
Compared with CY8C24223A-24SXI and CY8C24423A-24SXI, the CY8C24123A4-24SXI provides the minimal viable configuration for cost-sensitive, space-constrained embedded control - retaining full peripheral compatibility while reducing flash overhead and unit price.
Availability
CY8C24123A4-24SXI is available at Aetrix Electronics and suitable for industrial sensor nodes, smart home controllers, medical wearables, and automotive body electronics requiring stable component supply and long-term manufacturability.
Supply support for CY8C24123A4-24SXI 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) is a fabless semiconductor company specializing in programmable embedded solutions, connectivity, and memory technologies.
The CY8C24x23A PSoC 1 family targets cost-sensitive, low-power mixed-signal applications where analog flexibility, firmware configurability, and rapid prototyping outweigh raw processing throughput - especially in sensor fusion and human-interface subsystems.
FAQ
What development tools are required to program the CY8C24123A4-24SXI?
PSoC Designer™ (free Windows IDE) is mandatory for hardware/firmware co-design. Programming requires CY3217-MiniProg1 or CY8CKIT-002 MiniProg3 with ISSP interface. Debugging uses full-speed ICE with 128 KB trace memory and complex breakpoint support - no third-party toolchains are supported.
Does the CY8C24123A4-24SXI support true hardware UART with FIFO?
No. It implements a software-emulated UART within digital PSoC blocks, supporting 8-bit data, selectable parity, and baud rates up to 115.2 kbps at 24 MHz. No hardware FIFO exists; firmware must manage transmit/receive buffers and interrupts directly.
Can the internal 24 MHz oscillator meet timing-critical USB or Ethernet requirements?
No. The ±5% accuracy (±2.5% at 0–70°C) and lack of USB-specific clock dividers make it unsuitable for USB device or Ethernet PHY clocking. External crystals or dedicated clock generators are required for such interfaces.
How is EEPROM functionality implemented given no physical EEPROM memory?
EEPROM emulation uses flash memory with wear-leveling algorithms in Cypress's PSoC Designer library. Up to 2 KB of flash is reserved and managed as EEPROM - supporting byte-write access, 100,000 write cycles, and automatic sector rotation to prevent premature flash wear.
CY8C24123A4-24SXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- PSOC™1 CY8C24xxx
- Packaging:
- Bag
- 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:
- 6
- 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 4x14b; D/A 2x9b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C24123A4-24SXI FAQ
1.How can I place an order for CY8C24123A4-24SXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C24123A4-24SXI 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 CY8C24123A4-24SXI reliable?
The price and inventory of CY8C24123A4-24SXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C24123A4-24SXI is usually 5 days.
3.What payment methods are accepted for CY8C24123A4-24SXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C24123A4-24SXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C24123A4-24SXI?
CY8C24123A4-24SXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C24123A4-24SXI 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 CY8C24123A4-24SXI?
For technical support, including CY8C24123A4-24SXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C24123A4-24SXI requirements.
6.How does Aetrix verify that CY8C24123A4-24SXI is sourced from the original manufacturer or authorized distributors?
All CY8C24123A4-24SXI 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 CY8C24123A4-24SXI meets industry standards.
7.What is the process for return or replacement of CY8C24123A4-24SXI?
All CY8C24123A4-24SXI units undergo pre-shipment inspection (PSI). If there is an issue with CY8C24123A4-24SXI, 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 CY8C24123A4-24SXI part is unused and in its original packaging.
Return procedure for CY8C24123A4-24SXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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