AM1707BZKB3

Overview

The AM1707BZKB3 is a Texas Instruments Sitara ARM microprocessor featuring an ARM926EJ-S core. It operates at maximum clock frequencies of 375 MHz or 456 MHz depending on the supply voltage, which is nominally 1.2 V for the 375 MHz version and 1.3 V for the 456 MHz version. The device integrates 16 KB instruction cache, 16 KB data cache, 8 KB RAM for the vector table, and 64 KB ROM. Additional memory includes 128 KB of on-chip RAM. It utilizes a 256-ball BGA package with a 1 mm pitch.

Feature Summary

• Integrates two independent Programmable Real-Time Unit (PRU) cores for deterministic control tasks
• Includes a 10/100 Mbps Ethernet MAC with RMII interface and MDIO module
• Features USB 2.0 OTG controller with integrated PHY and USB 1.1 OHCI host controller
• Provides three multichannel audio serial ports (McASP) supporting TDM and I2S formats

Applications

• Industrial Automation
• Test and Measurement
• Home Automation
• Portable Data Terminals

Procurement Notes

Verify the specific silicon revision and operating frequency variant required for the design, as performance characteristics differ between the 375 MHz and 456 MHz versions based on core voltage. Confirm that the 256-ball PBGA package dimensions align with the PCB layout constraints. Ensure compliance with the recommended power-on hours and thermal management specifications outlined in the datasheet for the selected temperature range.

Selection Notes

Select this component when a low-power ARM9-based solution with integrated PRU capabilities is needed for mixed-signal processing. The choice between the 375 MHz and 456 MHz variants depends on the available core voltage headroom and thermal dissipation capacity. Consider the extensive peripheral set, including multiple UARTs, SPIs, and I2C interfaces, to minimize external component count for connectivity requirements.

Part Context

The AM1707 belongs to the Sitara family of microprocessors from Texas Instruments. It is designed for applications requiring robust operating system support and rich user interfaces. The device combines a general-purpose ARM core with specialized peripherals like the PRUSS and multimedia controllers, offering a flexible platform for OEMs and ODMs to develop cost-effective embedded solutions.

Replacement Considerations

Consult the official Texas Instruments product migration guide for verified substitutes within the Sitara family. Cross-reference pinouts and register compatibility before transitioning to alternative part numbers.