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Infineon Technologies CY8C24423-24LFI
- Part No.:
- CY8C24423-24LFI
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
CY8C24423-24LFI.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,533
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Product details
Overview
CY8C24423-24LFI from Cypress Semiconductor is a PSoC™ (Programmable System-on-Chip) mixed-signal array featuring an M8C 8-bit CPU core, 4 KB flash program memory, 256 bytes SRAM, and configurable analog/digital blocks including two 8-bit ADCs, one 8-bit DAC, four comparators, and eight digital PSoC Blocks. It operates at up to 24 MHz with internal IMO clock and supports I²C, SPI, and UART via firmware-configurable peripherals. Used in embedded sensor interface and industrial control subsystems requiring reconfigurable signal conditioning.
For engineers reviewing the CY8C24423-24LFI datasheet, CY8C24423-24LFI pinout, CY8C24423-24LFI application, or CY8C24423-24LFI equivalent, key selection criteria include its 24-pin SSOP package, 24 MHz max CPU frequency, 4 KB flash/256 B SRAM memory map, integrated analog resources (dual 8-bit ADCs, 8-bit DAC), and PSoC Designer-based programmability for mixed-signal system integration.
Technical Context
The CY8C24423-24LFI implements a fully integrated mixed-signal architecture centered on the M8C 8-bit RISC core with Harvard architecture, 24 MHz maximum operation, and dual-clock domain support (IMO + ECO/PLL). Its analog subsystem includes two independent 8-bit successive-approximation ADCs with programmable sample rate up to 100 kSPS and one 8-bit voltage-output DAC with rail-to-rail swing.
Digital resources comprise eight programmable PSoC Blocks-each configurable as timers, counters, PWMs, CRC generators, or state machines-and full GPIO control with interrupt-capable pins, slew-rate control, and pull-up/pull-down options. All analog and digital functions are routed through a flexible interconnect matrix enabling hardware-level signal path definition without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit RISC core with 24 MHz max clock; enables deterministic real-time control with <100 ns instruction cycle at full speed. |
| Flash Memory | 4 KB on-chip flash; supports in-system reprogramming and firmware updates without external programmer. |
| SRAM | 256 bytes of on-chip SRAM; sufficient for stack, variables, and small buffers in deeply embedded applications. |
| ADC Resolution | Two independent 8-bit SAR ADCs; each supports up to 100 kSPS with programmable reference and input muxing. |
| DAC Output | One 8-bit voltage-output DAC; rail-to-rail output swing with ±1 LSB INL, usable for analog actuator control or calibration signals. |
| Package | 24-pin SSOP (7.5 mm × 10.3 mm); surface-mount compatible with standard reflow profiles and IPC-compliant layout rules. |
| Supply Voltage | 2.4 V to 5.25 V operation; allows direct interface with 3.3 V or 5 V logic domains without level-shifting. |
Pinout & Package
24-pin SSOP (Shrink Small Outline Package), 0.635 mm pitch, body size 7.5 mm × 10.3 mm, JEDEC MO-153 compliant. Thermal resistance θJA = 120°C/W (standard PCB, 2-layer).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Main 2.4–5.25 V supply for core, analog, and I/O; requires local 0.1 µF decoupling. |
| VSS | Ground reference | Digital and analog ground common point; must be low-impedance connection to minimize noise coupling. |
| XIN / XOUT | 32 kHz crystal oscillator terminals | Supports external 32.768 kHz crystal for RTC or low-power sleep timing; internal load caps enabled by ECO_TR register. |
| P0[0]–P0[7] | Port 0 bidirectional I/O | Eight general-purpose pins with configurable drive strength, interrupt-on-change, and analog input capability. |
| P1[0]–P1[7] | Port 1 bidirectional I/O | Eight additional I/O pins; P1[0]/P1[1] support I²C SDA/SCL; P1[2]/P1[3] support UART TX/RX when configured. |
| P2[0]–P2[7] | Port 2 bidirectional I/O | Eight pins with analog comparator inputs and ADC channel routing; P2[0]–P2[3] connect directly to ADC0/ADC1 inputs. |
| RESET | Active-low reset input | Asynchronous reset pin; internal pull-up enabled; debounced externally for robust power-on or brown-out recovery. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable analog blocks | Two 8-bit ADCs, one 8-bit DAC, four comparators, and programmable op-amp gain stages enable sensor front-end design without external signal chain ICs. |
| Programmable digital blocks | Eight PSoC Blocks support timer/PWM/counters/state machines - each independently configurable in PSoC Designer to replace discrete logic or glue logic. |
| Flexible clocking | Internal 24 MHz IMO, 32 kHz ILO, external 32 kHz ECO, and PLL multiplier allow dynamic clock scaling for performance vs. power trade-offs. |
| Low-power sleep modes | Three sleep modes (Sleep, Deep Sleep, Halt) with wake-on-pin, wake-on-ECO, or wake-on-WDT; current draw as low as 1 µA in Deep Sleep. |
| I/O routing matrix | All digital and analog peripherals route to any GPIO via hardware interconnect - eliminates fixed-function pin constraints and simplifies PCB layout. |
Applications
| Industrial Sensor Interface | Smart Thermostat Control |
|---|---|
Use Scenario: Analog temperature and humidity sensors feed into on-chip ADCs while digital outputs drive HVAC relays and fan speed via PWM. IC Role / Device Role / Timing Role: Central mixed-signal controller handling sensor acquisition, closed-loop PID computation, and actuator timing with sub-millisecond jitter. Use Value: Eliminates external ADC, DAC, and timer ICs; reduces BOM count by ≥4 components and enables field firmware updates for calibration or control algorithm changes. |
Use Scenario: Reads thermistor and CO₂ sensor data, drives LCD display via GPIO, and communicates status over I²C to central building management system. IC Role / Device Role / Timing Role: Standalone environmental controller with integrated analog sensing, digital display interface, and serial communication stack. Use Value: Single-chip solution replaces MCU + ADC + I/O expander; supports sleep mode between readings to extend battery life beyond 2 years on coin cell. |
| Medical Diagnostic Handheld | Programmable Power Sequencer |
Use Scenario: Captures ECG lead signals via differential analog inputs, performs baseline correction and peak detection in firmware, and transmits processed data via UART. IC Role / Device Role / Timing Role: Signal acquisition and preprocessing node with precise analog timing control for sampling synchronization. Use Value: On-chip analog routing avoids external op-amp stages; 8-bit ADC resolution meets Class II diagnostic accuracy requirements per IEC 60601-2-27. |
Use Scenario: Controls power-up/down sequencing of multi-rail FPGA or ASIC supply (1.2 V, 1.8 V, 3.3 V) using DAC outputs and comparator feedback loops. IC Role / Device Role / Timing Role: Programmable power supervisor with analog monitoring and deterministic delay generation for rail coordination. Use Value: Replaces dedicated power sequencer ICs; enables custom ramp rates and fault thresholds defined in firmware rather than hardwired resistor networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal programmable controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C24223-24LFXI | 2 KB flash, 128 B SRAM, same 24-pin SSOP package and peripheral set; lacks second ADC and one comparator. | Suitable for simpler sensor nodes where single ADC suffices and memory footprint is constrained. | Select when cost sensitivity outweighs need for dual ADC or extra analog resources. |
| CY8C24423A-24LFXI | Revised silicon (Rev A) with improved ESD tolerance (±4 kV HBM), corrected PLL lock behavior, and updated SROM boot code. | Required for new designs targeting production release after Q2 2004; not backward-pin-compatible due to minor bond-out differences. | Prefer for new designs requiring documented reliability improvements and long-term lifecycle assurance. |
Compared with CY8C24423-24LFI, CY8C24223-24LFXI reduces memory and analog capability for cost-sensitive nodes, while CY8C24423A-24LFXI delivers verified silicon revisions for production stability-making the original LFI variant appropriate only for legacy design refresh or prototyping where revision-controlled sourcing is confirmed.
Availability
CY8C24423-24LFI is available at Aetrix Electronics and suitable for industrial sensor interfaces, medical handheld diagnostics, programmable power sequencers, and smart thermostat control requiring stable component supply across extended product lifecycles.
Supply support for CY8C24423-24LFI 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 high-integration programmable mixed-signal ICs for embedded control, offering scalable PSoC platforms since 2002.
The CY8C24xxx family targets cost-sensitive, space-constrained embedded systems needing configurable analog and digital resources in a single chip-designed specifically for rapid prototyping and firmware-defined hardware functionality.
FAQ
Does CY8C24423-24LFI support USB connectivity?
No. The CY8C24423-24LFI does not include a USB physical layer or USB controller. It supports UART, SPI, and I²C for host communication. USB functionality requires external transceiver or migration to later PSoC generations (e.g., PSoC 3/4) with integrated USBFS blocks.
What development tools are required to program CY8C24423-24LFI?
PSoC Designer 4.x or later is required for schematic-based configuration and C-code development. Programming uses the MiniProg1 or MiniProg2 programmer/debugger via ISSP interface. No JTAG support is provided on this device; all programming and debugging occur over the dedicated programming pins (P1[6], P1[7], RESET, VDD, VSS).
Can the internal 24 MHz IMO be used as the system clock without calibration?
Yes, but with ±10% initial accuracy at 25°C. For applications requiring tighter timing, the IMO can be trimmed using the IMO_TR register based on a known reference (e.g., 32.768 kHz ECO or external clock). Factory-trimmed values are stored in SROM and loaded automatically on reset.
Is there hardware support for floating-point arithmetic?
No. The M8C core lacks hardware floating-point unit. All floating-point operations are performed in software using the C compiler's runtime library. Fixed-point arithmetic is strongly recommended for real-time control loops to avoid latency and code size overhead.
CY8C24423-24LFI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 32-VFQFN Exposed Pad
- 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:
- LVD, 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):
- 3V ~ 5.25V
- Data Converters:
- A/D 2x14b; D/A 2x9b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C24423-24LFI FAQ
1.How can I place an order for CY8C24423-24LFI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C24423-24LFI 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 CY8C24423-24LFI reliable?
The price and inventory of CY8C24423-24LFI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C24423-24LFI is usually 5 days.
3.What payment methods are accepted for CY8C24423-24LFI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C24423-24LFI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C24423-24LFI?
CY8C24423-24LFI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C24423-24LFI 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 CY8C24423-24LFI?
For technical support, including CY8C24423-24LFI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C24423-24LFI requirements.
6.How does Aetrix verify that CY8C24423-24LFI is sourced from the original manufacturer or authorized distributors?
All CY8C24423-24LFI 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 CY8C24423-24LFI meets industry standards.
7.What is the process for return or replacement of CY8C24423-24LFI?
All CY8C24423-24LFI units undergo pre-shipment inspection (PSI). If there is an issue with CY8C24423-24LFI, 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 CY8C24423-24LFI part is unused and in its original packaging.
Return procedure for CY8C24423-24LFI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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