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Product Detailed Parameters
- Description：IC MCU 8BIT 8KB FLASH 32QFN
- Series：PSOC™1 CY8C21xxx
- Mfr：Infineon Technologies
- Package：Tray
- Core Processor：M8C
- Core Size：8-Bit
- Speed：24MHz
- Connectivity：I2C, SPI, UART/USART
- Peripherals：POR, PWM, WDT
- Number of I/O：28
- Program Memory Size：8KB (8K x 8)
- Program Memory Type：FLASH
- EEPROM Size：-
- RAM Size：512 x 8
- Voltage - Supply (Vcc/Vdd)：2.4V ~ 5.25V
- Data Converters：A/D 28x8b
- Oscillator Type：Internal
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：32-QFN (5x5)
- Package / Case：32-UFQFN Exposed Pad
- Grade：-
- Qualification：-
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Overview
The CY8C21434-24LKXI is an 8-bit microcontroller from the Infineon PSoC 1 family, utilizing the M8C core. It features 8 kB of Flash program memory and 512 bytes of SRAM. The device operates at a maximum clock frequency of 24 MHz with a supply voltage range of 2.4 V to 5.25 V. It includes one 10-bit Delta-Sigma ADC module and supports CapSense technology for touch sensing applications. The component provides 28 GPIO pins and integrates one I2C interface. It is designed for industrial temperature ranges from -40 °C to 85 °C.
Feature Summary
- Integrates CapSense Plus technology for capacitive touch sensing capabilities
- Includes a programmable 10-bit Delta-Sigma analog-to-digital converter
- Features an 8-bit M8C processor core with on-chip Flash and SRAM
Applications
- Capacitive touch control interfaces
- Battery-powered portable devices
- Industrial sensor monitoring systems
Procurement Notes
Verify the specific package suffix 'LKXI' against official Infineon documentation to confirm pinout and thermal characteristics. Ensure compatibility with PSoC Designer software versions supporting the CY8C21x34 series. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process before procurement.
Selection Notes
Select this component when a low-pin-count MCU with integrated touch sensing is required. It is suitable for designs needing a single 10-bit ADC channel and basic communication interfaces like I2C. Consider the 24 MHz performance limit and 2.4 V minimum operating voltage for power budget calculations.
Part Context
This part belongs to the CY8C21x34 series within the PSoC 1 architecture. It shares the M8C core and peripheral set with variants like the CY8C21434-24LTXI, differing primarily in package type. The series targets cost-sensitive embedded applications requiring mixed-signal processing and user interaction features.
Replacement Considerations
Check for direct pin-compatible substitutes within the CY8C21434 family, such as different package options (e.g., LTXI). Verify that alternative parts maintain the same 24 MHz speed grade and CapSense channel count.
