CY8C3245AXI-166T

Overview

The CY8C3245AXI-166T is an Infineon PSoC 3 microcontroller featuring a single-cycle 8051 CPU with a maximum operating frequency of 50 MHz. It integrates up to 64 KB of Flash memory, 8 KB of SRAM, and 2 KB of EEPROM. The device includes one 12-bit Delta-Sigma ADC, one 8-bit DAC, two voltage comparators, and a certified Full-Speed USB 2.0 interface. It supports 24 DMA channels, four TCPWM modules, and one I2C module. Operating within a voltage range of 1.71 V to 5.5 V and a temperature range of -40 °C to 85 °C, it utilizes a 100-TQFP package.

Feature Summary

• Integrates a high-performance single-cycle 8051 CPU with a 50 MHz clock speed and 24-channel DMA controller for efficient data handling.
• Features a highly configurable analog subsystem including a 12-bit Delta-Sigma ADC, 8-bit DAC, and CapSense touch sensing capabilities.
• Provides flexible digital resources via Universal Digital Blocks (UDB) and supports multiple communication interfaces such as USB 2.0 and I2C.
• Supports low-power operation with sleep and deep sleep modes while maintaining data retention in RAM.

Applications

• Consumer electronics requiring capacitive touch control
• Industrial control systems with mixed-signal requirements
• Medical devices needing precise analog signal acquisition
• Battery-powered applications utilizing the integrated boost converter

Procurement Notes

Verify the specific ordering suffix 'T' indicates tape-and-reel packaging when sourcing components. Confirm that the AXI designation corresponds to the industrial temperature grade (-40 °C to 85 °C). Ensure compatibility with the PSoC Creator development environment for firmware implementation. Cross-reference the exact part number against official Infineon distribution channels to avoid counterfeit products.

Selection Notes

Select this component for designs requiring a balance of processing power and extensive analog integration on a single chip. The 100-pin TQFP package offers ample GPIO availability for complex peripheral connections. Consider the 50 MHz performance limit and 64 KB memory capacity against application demands. Evaluate the need for the integrated USB PHY versus external solutions based on system cost and pin count constraints.

Part Context

This device belongs to the Infineon PSoC 3 family, which combines programmable analog and digital blocks with an 8051 core. The CY8C32 series specifically targets applications demanding high flexibility in mixed-signal design. It serves as a system-on-chip solution that reduces bill-of-materials by integrating functions typically requiring separate discrete components.

Replacement Considerations

Check for other CY8C3245 variants with different package options or memory sizes if form factor changes are acceptable. Verify functional equivalence with newer PSoC 4 or PSoC 5LP families, noting architectural differences between 8051 and ARM Cortex-M cores.

FAQ

What is the maximum operating frequency of the CPU?

The internal main oscillator (IMO) can be configured up to 24 MHz, and the PLL can generate a system clock of up to 50 MHz.

Does this device support capacitive touch sensing?

Yes, the analog subsystem supports CapSense functionality, allowing for up to 62 touch sensors to be implemented.

How many DMA channels are available?

The device features a 24-channel Direct Memory Access (DMA) controller to handle data transfers without CPU intervention.