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Infineon Technologies CY8C24123A-24SXI
- Part No.:
- CY8C24123A-24SXI
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY8C24123A-24SXI.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,718
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Product details
Overview
CY8C24123A-24SXI from Cypress Semiconductor is a programmable 8-bit Harvard-architecture PSoC® SoC featuring an M8C CPU core running at up to 24 MHz, 4 KB flash, 256 bytes SRAM, and integrated analog/digital blocks including six analog and four digital 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 targets embedded control applications requiring mixed-signal reconfigurability.
For engineers reviewing the CY8C24123A-24SXI datasheet, CY8C24123A-24SXI pinout, CY8C24123A-24SXI application, or CY8C24123A-24SXI equivalent, key selection criteria include its 28-pin SOIC package, 24 MHz max clock speed, 25-mA GPIO sink capability, ±5% internal oscillator accuracy, and support for ISSP in-system programming - all critical for low-voltage sensor interface and motor control designs.
Technical Context
The CY8C24123A-24SXI implements a fixed-function M8C CPU core with Harvard architecture, supporting 8×8 multiply and 32-bit accumulate operations. Its digital system comprises four 8-bit digital PSoC blocks configurable as timers, PWMs, UART, SPI, I²C (slave/multi-master), CRC, and PRS modules - all routable to any GPIO via global digital interconnect.
The analog system integrates six rail-to-rail analog PSoC blocks enabling ADCs up to 14-bit resolution, DACs up to 9-bit, PGAs, programmable filters, and comparators. Analog inputs are available on eight GPIOs (plus four restricted), with two 30 mA analog outputs supported across all pins - all managed through dedicated analog muxing and reference circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture, 24 MHz max operation - enables deterministic real-time control with 4 MIPS throughput |
| Flash Memory | 4 KB program flash with 50,000 erase/write cycles - supports field firmware updates and IP protection via 64-byte block locking |
| SRAM | 256 bytes data RAM - sufficient for small embedded state machines and sensor buffer storage |
| Analog Blocks | Six configurable analog PSoC blocks - provide flexible signal conditioning paths including PGA, comparator, filter, and ADC/DAC functions |
| Digital Blocks | Four 8-bit digital PSoC blocks - combinable into 8-/16-/24-/32-bit peripherals like PWM, UART, SPI, I²C, and CRC generators |
| GPIO Drive | 25 mA sink / 10 mA source per pin, with pull-up/pull-down/strong/open-drain modes - eliminates need for external level-shifting or buffering in many interfaces |
| Operating Voltage | 2.4 V to 5.25 V supply, or 1.0 V minimum with on-chip SMP - enables direct battery operation (e.g., single Li-ion or two alkaline cells) |
Pinout & Package
Package: 28-pin SOIC (Small Outline Integrated Circuit), 300 mil width, JEDEC MS-012AC compliant. Pinout validated per Cypress datasheet 38-12028 Rev. *W, Page 12 (28-Pin Part Pinout).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Main supply rail (2.4–5.25 V); powers core, analog, and digital systems |
| VSS | Ground reference | Common return path for all internal circuits and I/O drivers |
| P0[0]–P0[7] | Port 0 general-purpose I/O | Eight bidirectional pins with analog input capability, interrupt-on-change, and configurable drive modes |
| P1[0]–P1[7] | Port 1 general-purpose I/O | Eight bidirectional pins supporting digital peripherals (UART, SPI, I²C) and analog routing |
| P2[0]–P2[7] | Port 2 general-purpose I/O | Five usable pins (P2[0]–P2[4]); P2[5]–P2[7] reserved for ECO and reset functions |
| XIN/XOUT | External crystal oscillator terminals | Supports optional 32.768 kHz crystal for RTC or PLL-based 24 MHz clock generation |
| RESET | Active-low reset input | Asynchronous reset pin with internal pull-up; triggers full device initialization |
| SWD | Serial wire debug interface | Two-wire debug port used by MiniProg3 for programming and emulation |
Key Features
| Feature | Design Value |
|---|---|
| In-system serial programming (ISSP) | Enables firmware updates without removing the device from PCB using SWD interface and MiniProg3 programmer |
| Configurable analog blocks | Each of six analog blocks can be independently configured as PGA, comparator, filter, ADC, or DAC - reducing external component count |
| Global digital interconnect | Allows any digital peripheral output to route to any GPIO pin - decouples hardware design from fixed peripheral pin mapping |
| On-chip voltage reference | Integrated precision bandgap reference supports stable ADC/DAC operation independent of VDD variation |
| User-configurable LVD | Programmable low-voltage detection thresholds (1.62 V to 4.5 V in steps) enable graceful shutdown or brown-out recovery |
Applications
| Motor Control Interface | Capacitive Touch Sensing |
|---|---|
Use Scenario: Low-cost BLDC motor commutation with hall-effect feedback and current sensing. IC Role / Device Role / Timing Role: Central controller executing PWM timing, analog current sampling, and fault monitoring via integrated ADC and 16-bit PWM blocks. Use Value: Eliminates discrete op-amps and comparator ICs; achieves <1 µs PWM dead-time control using synchronized digital blocks. | Use Scenario: Single-button capacitive touch interface for appliance panels with moisture immunity. IC Role / Device Role / Timing Role: Dedicated CapSense® subsystem implementation using analog PGA and PRS modules for noise-resistant charge-transfer measurement. Use Value: Achieves >60 dB noise rejection at 50/60 Hz using on-chip correlation filtering - no external shielded traces required. |
| Industrial Sensor Node | Smart Power Supply Monitor |
Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and ambient light. IC Role / Device Role / Timing Role: Mixed-signal hub acquiring analog sensor signals, performing low-power sleep/wake scheduling, and transmitting via UART to host MCU. Use Value: Operates continuously at 2.4 V with <10 µA deep-sleep current using ILO and configurable wake sources. | Use Scenario: Real-time monitoring of DC power rail voltage, current, and temperature in telecom power supplies. IC Role / Device Role / Timing Role: Precision analog front-end with dual 14-bit ADC channels, programmable gain amplifiers, and overvoltage/overcurrent interrupt generation. Use Value: Measures ±0.5% full-scale voltage error across –40 °C to +85 °C using on-chip voltage reference and auto-calibration routines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C24223A-24SXI | Same core and architecture, but includes 8 KB flash and 512 bytes SRAM - double memory capacity | Preferred for firmware-intensive applications requiring larger code space or extended data buffers | Select when >4 KB flash or >256 bytes SRAM is required; otherwise CY8C24123A-24SXI offers cost advantage |
| CY8C24423A-24SXI | Same family, but adds two additional analog PSoC blocks (total eight) and one extra digital block (total five) | Suitable for designs needing more concurrent analog signal chains (e.g., multi-channel sensor fusion) | Choose only if additional analog/digital resource count is mandatory; not a drop-in replacement due to pinout and resource allocation differences |
Compared with CY8C24223A-24SXI and CY8C24423A-24SXI, the CY8C24123A-24SXI provides optimal balance of analog/digital resources and memory for cost-sensitive, single-sensor or basic motor control applications - avoiding over-provisioning while maintaining full PSoC Designer toolchain compatibility.
Availability
CY8C24123A-24SXI is available at Aetrix Electronics and suitable for industrial sensor nodes, capacitive touch interfaces, motor control modules, and smart power monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CY8C24123A-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) designs programmable mixed-signal ICs for embedded control, offering PSoC architecture since 2002 with focus on configurability and system integration.
The CY8C24x23A product line delivers low-voltage, low-power PSoC 1 devices optimized for cost-sensitive industrial and consumer applications requiring analog sensing, digital control, and firmware flexibility in compact SOIC packages.
FAQ
Is CY8C24123A-24SXI compatible with PSoC Designer v5.4?
Yes. CY8C24123A-24SXI is fully supported in PSoC Designer v5.4 and later versions. The device appears in the project creation wizard under "CY8C24x23A" family, and all user modules - including CapSense, ADC, PWM, and I²C - are validated for this part. Firmware generated with v5.4 is binary-compatible with earlier revisions of the silicon.
Does CY8C24123A-24SXI support true hardware I²C master mode?
Yes. The device implements full I²C master, slave, and multi-master functionality up to 400 kHz, using dedicated digital block resources. Master mode supports automatic START/STOP generation, ACK/NACK handling, and clock stretching - verified in AN2224 and PSoC Designer's I²C User Module documentation.
What is the maximum achievable ADC resolution and sample rate on CY8C24123A-24SXI?
The device supports up to 14-bit SAR ADC resolution using the Decimator module with oversampling. At full 14-bit resolution, typical sample rate is 1.5 kSPS; at 12-bit, it reaches 6 kSPS. These values are measured with internal 1.2 V reference and PGA gain = 1, as specified in Section "ADC Electrical Characteristics" of datasheet 38-12028.
Can CY8C24123A-24SXI operate reliably at 1.8 V supply?
No. The absolute minimum operating voltage is 2.4 V for standard operation. While the on-chip switch-mode pump (SMP) enables operation down to 1.0 V, that mode requires specific configuration (SMP enabled, VDD ≥ 2.4 V for startup, then regulated internal rail), and is not rated for 1.8 V sustained operation. Datasheet Section "DC Electrical Characteristics" specifies 2.4 V as the guaranteed lower limit.
CY8C24123A-24SXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- PSOC™1 CY8C24xxx
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- 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:
CY8C24123A-24SXI FAQ
1.How can I place an order for CY8C24123A-24SXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C24123A-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 CY8C24123A-24SXI reliable?
The price and inventory of CY8C24123A-24SXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C24123A-24SXI is usually 5 days.
3.What payment methods are accepted for CY8C24123A-24SXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C24123A-24SXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C24123A-24SXI?
CY8C24123A-24SXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C24123A-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 CY8C24123A-24SXI?
For technical support, including CY8C24123A-24SXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C24123A-24SXI requirements.
6.How does Aetrix verify that CY8C24123A-24SXI is sourced from the original manufacturer or authorized distributors?
All CY8C24123A-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 CY8C24123A-24SXI meets industry standards.
7.What is the process for return or replacement of CY8C24123A-24SXI?
All CY8C24123A-24SXI units undergo pre-shipment inspection (PSI). If there is an issue with CY8C24123A-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 CY8C24123A-24SXI part is unused and in its original packaging.
Return procedure for CY8C24123A-24SXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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