AM1808EZWT3

Overview

The AM1808EZWT3 is a low-power applications processor based on the ARM926EJ-S core, operating at 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 supporting NOR, NAND, and SDRAM, and a DDR2/Mobile DDR controller. Key peripherals include an Ethernet MAC, USB 2.0 OTG, SATA, PRUSS, and various serial interfaces.

Feature Summary

• Integrates a 456-MHz ARM926EJ-S RISC core with MMU and cache subsystems
• Provides dual external memory interfaces for asynchronous and high-speed DRAM
• Includes Programmable Real-Time Unit Subsystem (PRUSS) with independent cores
• Features integrated USB 2.0 OTG, SATA, and 10/100 Mb/s Ethernet MAC

Applications

• Smart grid and metering infrastructure
• Industrial automation controllers
• Medical imaging systems
• Video surveillance equipment

Procurement Notes

Verify the specific suffix 'ZWT' corresponds to the 16 mm x 16 mm, 361-ball, 0.80 mm pitch PBGA package. Confirm the operational frequency rating of 456 MHz requires the 1.3V nominal core voltage setting. Ensure compatibility with required Linux or RTOS environments supported by the Sitara family.

Selection Notes

Select this component when high-performance processing combined with real-time control via PRUSS is required. It is suitable for designs needing robust connectivity through SATA and Ethernet alongside multimedia capabilities. Consider the extended temperature range and industrial-grade packaging for harsh environment deployments.

Part Context

This microprocessor belongs to the Texas Instruments Sitara family, designed for embedded applications requiring rich OS support and user interfaces. It bridges the gap between general-purpose MPUs and DSPs, offering flexibility for mixed-signal system integration in cost-sensitive yet performance-critical markets.

Replacement Considerations

Check for pin-compatible alternatives within the Sitara lineup such as the AM1808EZCE4, which offers a different package pitch. Verify if higher-frequency variants or updated silicon revisions are available that maintain software compatibility while offering improved thermal or electrical characteristics.