CY8C20121-SX1IT

Overview

The CY8C20121-SX1IT is a PSoC®1 programmable system-on-chip microcontroller manufactured by Cypress Semiconductor Corp. It features an 8-bit M8C core operating at a maximum frequency of 24 MHz. The device integrates 8 KB of Flash program memory and 512 bytes of RAM. It supports multiple communication interfaces including I2C, SPI, and UART/USART. The component operates within a supply voltage range of 3 V to 5.25 V and is rated for an industrial temperature range of -40°C to +85°C. It is housed in a 20-SSOP package with 16 general-purpose I/O pins.

Feature Summary

• Integrates configurable analog and digital peripherals on a single chip to reduce external component count.
• Provides flexible programmability for mixed-signal applications through the PSoC architecture.
• Supports standard serial communication protocols for interfacing with sensors and other controllers.

Applications

• Industrial control systems
• Data logging devices
• Test instruments

Procurement Notes

Verify the manufacturer status as Cypress Semiconductor has been acquired by Infineon Technologies. Confirm that the specific ordering suffix corresponds to the required package type and temperature grade. Ensure compatibility with existing firmware development tools for the PSoC 1 family before procurement.

Selection Notes

Select this component when a low-pin-count MCU with mixed-signal capabilities is required. Compare against other CY8C21xxx series variants if different memory sizes or package options are needed. Verify that the 24 MHz clock speed and 512-byte RAM meet the application's processing requirements.

Part Context

This part belongs to the PSoC 1 CY8C21xxx family, which combines an 8-bit CPU with programmable analog blocks. It is designed for embedded applications requiring both digital control and analog signal conditioning. The family is known for reducing board space and design complexity by integrating diverse peripherals into a single IC.

Replacement Considerations

Check for direct pin-compatible replacements within the CY8C21xxx series. Consider newer PSoC generations if enhanced performance or updated toolchains are necessary. Verify that any substitute maintains the same voltage range and interface support.