AM1806BZCE3

Overview

The AM1806BZCE3 is a Texas Instruments Sitara ARM926EJ-S microprocessor operating at 456 MHz with a 1.3 V core voltage. It features a 32-bit RISC architecture, 16 KB instruction and data caches, and 128 KB of on-chip RAM. The device integrates two Programmable Real-Time Unit (PRU) cores, an Enhanced Direct Memory Access Controller (EDMA3), and interfaces including USB 2.0 OTG, Ethernet, I2C, SPI, UART, and MMC/SD. It is housed in a 361-ball PBGA package.

Feature Summary

• Integrates dual Programmable Real-Time Unit (PRU) cores for deterministic real-time control tasks.
• Includes an Enhanced Direct Memory Access Controller (EDMA3) with 64 independent channels to reduce CPU load.
• Supports multiple communication protocols via integrated peripherals such as USB 2.0 OTG, Ethernet, and audio serial ports.
• Features a low-power ARM926EJ-S core with hardware memory management and cache support.

Applications

• Set-top boxes
• Industrial automation controllers
• Medical and healthcare devices
• Building automation systems

Procurement Notes

Verify the specific silicon revision and ordering suffix against the manufacturer's current datasheet SPRS658F. Confirm that the BZCE package variant matches your PCB footprint requirements. Ensure compatibility with required operating system versions and peripheral configurations before finalizing procurement.

Selection Notes

Select this component when deterministic real-time performance is required alongside general-purpose processing. The inclusion of PRU cores makes it suitable for applications needing precise timing control. Verify that the 456 MHz speed grade meets your processing needs and that the 1.3 V core voltage aligns with your power supply design.

Part Context

The AM1806 belongs to the Texas Instruments Sitara family of embedded processors. It is designed for cost-sensitive applications requiring robust OS support and rich user interfaces. The processor combines a high-performance ARM core with specialized real-time units to handle mixed-signal processing tasks efficiently.

Replacement Considerations

Check for updated silicon revisions within the AM1806 series. Consider the AM1808 if additional memory or different interface options are required. Verify pin-to-pin compatibility if substituting with other PBGA-361 packages from the same product line.

FAQ

What is the function of the Programmable Real-Time Unit (PRU) subsystem?

The PRUSS contains two independent PRU cores that provide deterministic real-time control capabilities, allowing them to operate independently of the main ARM processor for time-critical tasks.

Does the AM1806 support external memory expansion?

Yes, it includes an Asynchronous and SDRAM External Memory Interface (EMIFA) for slower memories and a DDR2/Mobile DDR controller for higher-speed memory access.