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Infineon Technologies CY8C24423A-24LFXIT
- Part No.:
- CY8C24423A-24LFXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
CY8C24423A-24LFXIT.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,050
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Product details
Overview
CY8C24423A-24LFXIT from Cypress Semiconductor is a programmable mixed-signal System-on-Chip (SoC) integrating an M8C 8-bit Harvard architecture CPU, 4 KB Flash, 256 bytes SRAM, six configurable analog blocks (supporting up to 14-bit ADCs and 9-bit DACs), and four digital PSoC blocks (enabling timers, PWMs, UART, SPI, and I²C). It operates from 2.4 V to 5.25 V or down to 1.0 V using the on-chip switch-mode pump, and targets embedded control in industrial sensor interfaces and low-power human interface systems.
For engineers reviewing the CY8C24423A-24LFXIT datasheet, CY8C24423A-24LFXIT pinout, CY8C24423A-24LFXIT application, or CY8C24423A-24LFXIT equivalent, key selection criteria include its 24 MHz M8C core speed, dual 30 mA analog outputs, 12-channel analog input capability, configurable GPIO drive modes (including 25 mA sink), and integrated 1.3 V precision voltage reference for ADC/DAC accuracy.
Technical Context
The CY8C24423A-24LFXIT implements a fully configurable mixed-signal architecture where analog and digital resources are interconnected via global analog and digital buses. Its six analog blocks include CT and SC topologies supporting programmable gain amplifiers, filters, comparators, and Delta-Sigma/SAR ADCs - all routed to up to ten GPIO pins with analog input capability.
Digital functionality is built around four 8-bit PSoC blocks that can be combined into 8–32-bit peripherals: dual I²C masters/slaves (up to 400 kHz), full-duplex UART, multiple SPI configurations, CRC/PRS modules, and PWMs with dead-band generation. Clocking includes a ±2.5% internal 24 MHz IMO, optional 32.768 kHz crystal + PLL for precise 24 MHz, and a 32 kHz ILO for sleep/WDT timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| M8C Core Speed | Up to 24 MHz - enables real-time signal processing and deterministic interrupt response in resource-constrained embedded systems. |
| Flash / SRAM | 4 KB Flash (50k erase/write cycles) / 256 bytes SRAM - supports firmware updates and small data buffers without external memory. |
| Analog Blocks | 6 configurable analog blocks - provide flexible signal conditioning paths including 14-bit ADC, 9-bit DAC, PGA (gain up to 48×), and comparator with 16 thresholds. |
| Digital Blocks | 4 digital PSoC blocks - combine to form timers, counters, PWMs, UART, SPI, I²C, CRC, and PRS with routing to any GPIO. |
| GPIO Capability | Up to 24 pins with 25 mA sink, pull-up/down, high-Z, strong, or open-drain drive - supports direct LED driving, button sensing, and level-shifting interfaces. |
| Operating Voltage | 2.4 V to 5.25 V, or 1.0 V to 5.25 V with SMP - enables single-cell battery operation (e.g., 1.2 V NiMH) while maintaining full peripheral functionality. |
| Temperature Range | -40°C to +85°C - qualified for industrial-grade deployment in uncontrolled ambient environments. |
Pinout & Package
Package: 24-pin QFN (4 × 4 mm, 0.5 mm pitch), lead-free and RoHS-compliant (LFXIT suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply | Accepts 2.4–5.25 V; powers core, analog, and digital systems; bypass capacitor required for noise immunity. |
| VSS | Ground reference | Digital and analog common return; requires low-impedance connection to minimize coupling between domains. |
| P0[0]–P0[7] | Programmable GPIO | Eight pins with analog input capability, 25 mA sink, and configurable drive modes; support interrupt-on-change. |
| P1[0]–P1[7] | Programmable GPIO | Eight pins with analog input capability and full digital block routing; some support analog output (30 mA). |
| P2[0]–P2[7] | Programmable GPIO | Eight pins with analog input capability; P2[0]/P2[1] support crystal oscillator (ECO) connections when enabled. |
| XRES | External reset input | Active-low asynchronous reset; internal pull-up ensures reliable startup without external component. |
| SWD | Serial wire debug | Two-wire debug interface (SWDIO/SWCLK) for programming and real-time emulation via ISSP. |
Key Features
| Feature | Design Value |
|---|---|
| In-system serial programming (ISSP) | Enables field firmware updates via two-wire SWD interface without removing device from PCB. |
| Configurable analog outputs | Two dedicated 30 mA analog output drivers allow direct connection to transducers or op-amp inputs without external buffers. |
| Switch-mode pump (SMP) | Generates regulated 3.3 V or 5 V from 1.0–1.2 V input - eliminates need for external boost converter in battery-powered designs. |
| Programmable low-voltage detection (LVD) | User-configurable threshold (1.62–4.5 V) triggers interrupt before brown-out, enabling graceful shutdown or state save. |
| Global digital/analog interconnect | Routing matrix allows any analog block output to connect to any digital block input - enables custom signal chains like ADC → filter → PWM feedback loop. |
Applications
| Industrial Sensor Interface | Capacitive Touch HMI |
|---|---|
Use Scenario: Monitoring temperature, pressure, and humidity in factory-floor equipment with local signal conditioning and digital reporting. IC Role / Device Role / Timing Role: PSoC acts as sensor hub - digitizing analog sensor outputs via programmable 14-bit ADC, filtering noise digitally, and transmitting via I²C to host MCU. Use Value: Eliminates discrete op-amps, filters, and ADCs; reduces BOM count by 7+ components while enabling per-sensor calibration in Flash. | Use Scenario: Replacing mechanical buttons with capacitive touch sliders and proximity wake-up on industrial control panels. IC Role / Device Role / Timing Role: Dedicated CapSense® engine (using SC analog blocks) performs self-capacitance scanning at 100 Hz with automatic baseline tracking and noise rejection. Use Value: Achieves <10 µA sleep current with wake-on-touch; no external RC network needed due to on-chip current sources and decimator hardware. |
| Low-Power Battery Monitor | Programmable Power Sequencer |
Use Scenario: Real-time monitoring of Li-ion or NiMH battery voltage, current, and temperature in portable test equipment. IC Role / Device Role / Timing Role: Measures cell voltage via 12-bit SAR ADC, computes state-of-charge using lookup table in Flash, and drives status LEDs via PWM-controlled GPIO. Use Value: Uses internal 1.3 V reference for <±0.5% ADC accuracy across temperature; SMP enables operation down to 1.0 V cell voltage. | Use Scenario: Controlling power-up/down sequencing of multi-rail FPGA or DSP subsystems in telecom line cards. IC Role / Device Role / Timing Role: Generates precise, adjustable delay intervals (1 ms–10 s) using 32-bit timer + programmable clock dividers, then asserts enable signals via GPIO. Use Value: Replaces 5+ discrete timers, logic gates, and voltage supervisors; delays are reprogrammable in-field without hardware change. |
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-24LFXIT | Fewer GPIO (16 vs. 24); same analog/digital block count and memory; identical package and core. | Limited pin count restricts simultaneous analog input + digital peripheral routing in dense layouts. | Select when BOM cost reduction is critical and I/O count ≤16 satisfies routing constraints. |
| CY8C24123A-24LFXIT | Same package and core; reduced analog block count (4 vs. 6); no analog output drivers; no SMP. | Cannot support dual 30 mA analog outputs or sub-2.4 V battery operation. | Choose only for ultra-low-cost sensor nodes where analog output and SMP are unused. |
Compared with CY8C24223A-24LFXIT and CY8C24123A-24LFXIT, the CY8C24423A-24LFXIT provides full 24-pin I/O expansion, complete analog subsystem capability, and SMP-based single-cell operation - making it the only variant suitable for complex, battery-powered mixed-signal applications requiring both analog output and wide voltage range.
Availability
CY8C24423A-24LFXIT is available at Aetrix Electronics and suitable for industrial sensor interfaces, capacitive touch HMI systems, low-power battery monitors, and programmable power sequencers requiring stable component supply and long-term production continuity.
Supply support for CY8C24423A-24LFXIT 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 and digital ICs for embedded control, connectivity, and security applications, with headquarters in San Jose, CA.
The CY8C24x23A PSoC family delivers configurable analog and digital peripherals on a single chip to replace discrete signal-chain components - targeting cost-sensitive, low-power industrial and consumer control systems requiring rapid customization.
FAQ
What development tools are required to program the CY8C24423A-24LFXIT?
PSoC Designer™ IDE (v5.4 or later) is required for full configuration of analog/digital blocks, code generation, and debugging. Programming uses the two-wire SWD interface via MiniProg3 or KitProg programmer; no external debugger hardware is needed for basic ISSP. The IDE includes pre-verified user modules for ADC, CapSense, I²C, and PWM.
Does the CY8C24423A-24LFXIT support true hardware-based CapSense® functionality?
Yes - it uses dedicated switched-capacitor (SC) analog blocks with built-in current sources, integrators, and decimators to implement CapSense® with hardware-accelerated baseline tracking, noise rejection, and auto-tuning. No firmware overhead is required for raw scan; only application-level gesture logic runs on the M8C core.
Can the internal 24 MHz oscillator meet timing-critical UART or I²C requirements?
The ±2.5% accuracy of the internal main oscillator (IMO) is sufficient for standard UART (up to 115.2 kbps with oversampling) and I²C (100/400 kHz) communication. For higher-precision timing, the device supports an external 32.768 kHz crystal with PLL to generate a crystal-locked 24 MHz system clock.
How is EEPROM emulation implemented, and what is its endurance?
EEPROM emulation uses a dedicated 2 KB region of the 4 KB Flash, managed by Cypress's Emulated EEPROM Component in PSoC Designer. It provides byte-level read/write with wear leveling, rated for 100,000 write cycles per emulated byte and data retention >10 years at 85°C.
CY8C24423A-24LFXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 32-VFQFN Exposed Pad
- Series:
- PSOC™1 CY8C24xxx
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
CY8C24423A-24LFXIT FAQ
1.How can I place an order for CY8C24423A-24LFXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C24423A-24LFXIT 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-24LFXIT reliable?
The price and inventory of CY8C24423A-24LFXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C24423A-24LFXIT is usually 5 days.
3.What payment methods are accepted for CY8C24423A-24LFXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C24423A-24LFXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C24423A-24LFXIT?
CY8C24423A-24LFXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C24423A-24LFXIT 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-24LFXIT?
For technical support, including CY8C24423A-24LFXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C24423A-24LFXIT requirements.
6.How does Aetrix verify that CY8C24423A-24LFXIT is sourced from the original manufacturer or authorized distributors?
All CY8C24423A-24LFXIT 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-24LFXIT meets industry standards.
7.What is the process for return or replacement of CY8C24423A-24LFXIT?
All CY8C24423A-24LFXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY8C24423A-24LFXIT, 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-24LFXIT part is unused and in its original packaging.
Return procedure for CY8C24423A-24LFXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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