CY8C21234B-24SXI

Overview

The CY8C21234B-24SXI is an 8-bit microcontroller within the PSoC 1 family, utilizing the M8C core. It features 8 kB of Flash program memory and 512 bytes of SRAM. The device supports a maximum clock frequency of 24 MHz and operates on a supply voltage range of 2.4 V to 5.25 V. It includes a 28-channel, 10-bit analog-to-digital converter (ADC), two 8-bit digital-to-analog converters (DACs), and two analog comparators. Connectivity is provided via I2C, SPI, and UART interfaces. The component is housed in a 16-pin SOIC package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates programmable mixed-signal blocks allowing for customizable analog and digital peripheral configurations.
• Includes CapSense technology support for capacitive touch sensing applications without external components.
• Provides multiple communication interfaces including I2C, SPI, and UART for system connectivity.

Applications

• Capacitive touch interface controllers
• Industrial sensor nodes
• Portable battery-powered devices

Procurement Notes

Verify the specific suffix 'B' against official Infineon or Cypress documentation to confirm revision differences from the standard CY8C21234 variant. Ensure the SOIC-16 package matches the target PCB footprint. Confirm RoHS compliance status through the manufacturer's current certificate of conformity prior to final procurement approval.

Selection Notes

Select this component when a low-pin-count solution with integrated analog capabilities is required. The M8C architecture suits simple control loops. Consider the 28-channel ADC availability if signal acquisition is needed. Verify that the 8 kB memory capacity meets firmware requirements before choosing over higher-density PSoC 1 alternatives.

Part Context

This part belongs to the PSoC 1 CY8C21xxx series, originally developed by Cypress Semiconductor, which was acquired by Infineon Technologies. The series is characterized by its Programmable System-on-Chip architecture, combining an 8-bit processor with configurable analog and digital blocks. This specific model represents a compact variant designed for cost-sensitive embedded applications requiring mixed-signal processing.

Replacement Considerations

CY8C21234-24SXI: Pin-compatible alternative with identical functional specifications but potentially different manufacturing revision or lot coding. Verify electrical parameters match exactly before substitution.