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Product Detailed Parameters
- Description：IC MCU 8BIT 8KB FLASH 32QFN
- Series：PSOC™1 CY8C21xxx
- Mfr：Infineon Technologies
- Package：Tape & Reel (TR)
- 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 CY8C21434-24LTXIAST is an 8-bit microcontroller within the Infineon PSoC 1 family, utilizing the M8C core. It features 8 kB of Flash program memory and 512 bytes of RAM. The device operates with a maximum clock frequency of 24 MHz and supports a supply voltage range of 2.4 V to 5.25 V. It includes one 10-bit Delta-Sigma ADC and provides 28 I/O pins. The component is housed in a 32-QFN package and is rated for operation between -40°C and +85°C.
Feature Summary
- Integrates CapSense technology for capacitive touch sensing applications
- Includes programmable analog blocks for mixed-signal processing
- Supports low-power operation modes suitable for battery-powered devices
Applications
- Capacitive touch interface controllers
- Low-power consumer electronics
- Battery-operated measurement instruments
Procurement Notes
Verify the specific suffix against official datasheets to confirm package type and temperature grade. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Check for end-of-life notices or obsolescence warnings from the manufacturer. Ensure design-in documentation matches the exact part number variant.
Selection Notes
Select this component when a dedicated capacitive touch solution with integrated analog capabilities is required. Compare pin counts and memory sizes against other PSoC 1 variants to ensure adequate resources. Verify that the 24 MHz speed meets system timing requirements. Consider the QFN package constraints for thermal management and PCB layout.
Part Context
This part belongs to the CY8C21x34 series of the PSoC 1 architecture. It combines digital logic with programmable analog blocks on a single chip. The series is designed for cost-sensitive applications requiring mixed-signal functionality and touch sensing integration without external components.
Replacement Considerations
Check for direct substitutes within the CY8C21434 series with different speed grades or packages. Verify compatibility with PSoC Designer software versions used in existing designs.
