AM1808EZWTA3

Overview

The AM1808EZWTA3 is a low-power applications processor based on the ARM926EJ-S RISC core, operating at a maximum clock frequency of 375 MHz with a 1.2 V supply voltage. It features a 32-bit/16-bit data bus width and includes 16 KB instruction cache, 16 KB data cache, 8 KB RAM for the vector table, and 64 KB ROM. The device is housed in a 361-ball NFBGA package (ZWT) with a 0.80 mm ball pitch, designed for surface mount technology.

Feature Summary

• Integrated Programmable Real-Time Unit Subsystem (PRUSS) featuring two independent PRU cores for deterministic real-time control tasks.
• Dual external memory interfaces supporting asynchronous EMIFA for NOR/NAND flash and SDRAM, alongside a high-speed DDR2/Mobile DDR controller.
• Comprehensive multimedia connectivity including a Video Port Interface (VPIF), Universal Parallel Port (uPP), and LCD controller for display output.
• Robust peripheral set comprising a 10/100 Mb/s Ethernet MAC, USB 2.0 OTG with integrated PHY, SATA controller, and multiple serial communication modules.

Applications

• Industrial automation controllers requiring deterministic real-time processing via PRUSS.
• Human-machine interface (HMI) panels utilizing video and parallel port displays.
• Networked embedded systems integrating Ethernet and USB connectivity.
• Storage-enabled devices leveraging the integrated Serial ATA controller.

Procurement Notes

Verify that the specific suffix 'A3' corresponds to the 375 MHz operational frequency variant and 1.2 V core voltage requirements. Confirm the ZWT package designation matches the required 0.80 mm pitch NFBGA form factor. Ensure environmental specifications align with the extended temperature range if applicable to the deployment scenario.

Selection Notes

Select this component when a balance of general-purpose processing and deterministic real-time control is required within a single chip. The inclusion of both EMIFA and DDR2 controllers allows flexibility in memory architecture choices. Consider the PRUSS capability for offloading time-critical tasks from the main ARM core to optimize system performance.

Part Context

This microprocessor belongs to the Texas Instruments Sitara family, specifically targeting low-power embedded applications. It integrates an ARM926EJ-S core with specialized peripherals like PRUSS and SATA, distinguishing it from standard microcontrollers by offering robust multimedia and industrial interface capabilities suitable for complex system-on-chip designs.

Replacement Considerations

The AM1808EZCE4 is a confirmed substitute part number offering similar functionality but operates at a higher frequency of 456 MHz with a 1.3 V core voltage. Designers must account for differences in power consumption and thermal management when transitioning between these variants.