AM1808EZWTT3

Overview

The AM1808EZWTT3 is a low-power applications processor based on the ARM926EJ-S core, operating at frequencies up to 456 MHz with a 1.3V supply voltage. It features a 32-bit RISC architecture with 16KB instruction and data caches, 8KB RAM for the vector table, and 64KB ROM. The device integrates two external memory interfaces (EMIFA and DDR2/mDDR controller), a Programmable Real-Time Unit Subsystem (PRUSS) with two independent cores, and an Enhanced Direct-Memory-Access Controller 3 (EDMA3). Connectivity includes a 10/100 Mb/s Ethernet MAC, USB 2.0 OTG, SATA, and multiple serial interfaces.

Feature Summary

• Integrates a high-performance ARM926EJ-S RISC core with hardware-assisted Java execution and real-time debug capabilities.
• Includes a dedicated Programmable Real-Time Unit Subsystem (PRUSS) featuring two independent programmable PRU cores for deterministic control tasks.
• Provides comprehensive multimedia and connectivity peripherals including a 10/100 Ethernet MAC, USB 2.0 OTG, SATA controller, and video port interface.
• Features an Enhanced Direct-Memory-Access Controller 3 (EDMA3) with 64 independent channels to offload CPU processing for data movement.

Applications

• Industrial automation controllers requiring deterministic real-time processing
• Human-machine interface (HMI) panels with rich graphical displays
• Networked embedded systems utilizing Ethernet and USB connectivity
• Multimedia gateways supporting audio/video I/O and storage

Procurement Notes

Verify the specific suffix 'T3' against official Texas Instruments documentation to confirm tape-and-reel packaging and exact frequency binning. Ensure compatibility with required operating temperature ranges and voltage levels (1.2V or 1.3V) for the target application design.

Selection Notes

Select this component when a mixed-signal solution combining high-performance computing with deterministic real-time control is required. The integrated PRUSS allows for offloading time-critical tasks from the main ARM core, while the extensive peripheral set reduces the need for external chips in industrial and multimedia designs.

Part Context

The AM1808 belongs to the Sitara family of microprocessors designed for low-power, cost-sensitive applications. It bridges the gap between simple microcontrollers and complex SoCs by offering a robust ARM9 core alongside specialized real-time subsystems and rich I/O options within a single package.

Replacement Considerations

Consult the official AM1808 datasheet for direct pin-compatible or functionally equivalent alternatives within the Sitara portfolio. Verify that any substitute maintains support for the required PRUSS functionality and peripheral multiplexing configurations.