What is a cross-reference page for CY8C21434-24LKXI?
This page groups mapped replacement options for CY8C21434-24LKXI so buyers and engineers can compare alternatives before requesting a quote or approving a substitute.
Alternative part analysis
CY8C21434-24LKXI replacements, alternatives, and cross reference
Compare mapped replacement and alternative options for CY8C21434-24LKXI, then verify package, specifications, and application fit before approval.
Compare CY8C21434-24LKXI against mapped replacement options
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Specification view
Parameter Comparison Chart
A side-by-side view of the source part and its mapped alternatives so buyers and engineers can screen package, availability, lifecycle, and key descriptors before RFQ.
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| Parameter Comparison Chart | Current part CY8C21434-24LKXI Cypress Semiconductor |
|---|---|
| Part Number | CY8C21434-24LKXI |
| Manufacturer | Cypress Semiconductor |
| Category | Integrated Circuits (ICs) |
| Subcategory | Embedded - Microcontrollers |
| Package | - |
| Series | PSOC®1 CY8C21xxx |
| Key Attributes | - |
| Description | IC MCU 8BIT 8KB FLASH 32QFN |
| Lifecycle | - |
| Stock | 32,532 |
| Available | 84,191 |
| Min Order | 1 |
| Datasheet | Request |
| Oscillator Type | Internal |
| Peripherals | POR, PWM, WDT |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| RAM (bytes) | 512 |
| RAM Size | 512 x 8 |
| ROM (words) | 8192 |
| Bit Size | 8 |
| Data Bus Width | 8b |
| Supply Current-Max | 4mA |
| Voltage - Supply (Vcc/Vdd) | 2.4V~5.25V |
| Speed | FLASH |
| Supply Voltage Limit-Max | NO |
| Time@Peak Reflow Temperature-Max (s) | 20 |
| Core Processor | I2C, SPI, UART/USART |
| Output Voltage-Nom (FM) | 8-Bit |
| Format | M8C |
| Mfr | M8C |
| Voltage - Supply (Vcc\/Vdd) | 8kB |
| Data Converters | A/D 28x8b |
| Core Size | 8KB 8K x 8 |
| RoHS Status | ROHS3 Compliant |
| JESD-609 Code | e4 |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| Packaging | Tray |
| Lead Free | Lead Free |
| Mounting Type | Surface Mount |
| Published | 2004 |
| Part Status | Obsolete |
| Categories | Integrated Circuits (ICs) |
| Peak Reflow Temperature (Cel) | 260 |
| Supply Voltage | 5V |
| Technology | CMOS |
| Qualification Status | Not Qualified |
| Terminal Position | QUAD |
| Terminal Pitch | 0.5mm |
| Operating Temperature | -40°C~85°C TA |
| Subcategory | Microcontrollers |
| Sub-Categories | Embedded - Microcontrollers |
| Interface | I2C, SPI, UART, USART |
| Terminal Form | NO LEAD |
| HTS Code | 8542.39.00.01 |
| Frequency | 24MHz |
| Package / Case | 32-UFQFN Exposed Pad |
| Height | 550μm |
| Operating Supply Voltage | 5V |
| Surface Mount | YES |
| Manufacturer | Cypress Semiconductor |
| Series | PSOC®1 CY8C21xxx |
| Additional Feature | ALSO OPERATES AT 2.7V AND 3.3V SUPPLY |
| Reach Compliance Code | unknown |
| Length | 5.1mm |
| Number of Terminations | 32 |
| Number of Pins | 32 |
| Pin Count | 32 |
| Width | 5.1mm |
| Number of I/O | 28 |
| Bus Compatibility | USB |
| Base Part Number | CY8C21434 |
| Manufacturer's Part No. | CY8C21434-24LKXI |
| Actions |
Cross-reference FAQ
Replacement Part Questions
Short answers for teams reviewing CY8C21434-24LKXI replacement and equivalent-part options.
Does a mapped alternative mean a guaranteed drop-in replacement for CY8C21434-24LKXI?
Not automatically. Cross-reference mapping helps shortlist candidates, but package, electrical behavior, qualification scope, and approval rules still need to be checked before release.
Which parameters should teams compare first for CY8C21434-24LKXI alternatives?
Start with package, series, key attributes, lifecycle status, stock position, datasheet access, and the mapped pin-to-pin or cross-reference note. Then confirm application-specific requirements in the datasheet and RFQ stage.
Can I request a quote for an alternative to CY8C21434-24LKXI?
Yes. Use the product links or RFQ actions on this page to request pricing, availability, documentation, and sourcing support for any listed alternative part.
Is CY8C21434-24LKXI obsolete, and what replacement should buyers review first?
Check the lifecycle row on this page first. If buyers need a fast starting point, the strongest mapped replacement currently surfaced here is , followed by the other alternatives shown in the comparison table.
Engineering support
Need help validating the replacement path?
If your team is unsure whether a mapped alternative to CY8C21434-24LKXI from Cypress Semiconductor is really usable, contact us for help on package fit, pin compatibility, key parameter gaps, and qualification-facing review questions.
Contact a hardware engineer
Email our engineering support contact at [email protected], or use the contact page if the question should be routed across sourcing, engineering, and support.
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Package and pin compatibility
Review whether the alternate path looks credible from package, footprint, and pin-level perspectives.
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Parameter and function gaps
Surface the electrical, interface, or application-fit questions that still need confirmation before approval.
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Qualification and approval prep
Organize the documentation, datasheet evidence, and validation checkpoints your internal team may still require.