Aspeed Ast2500 Datasheet [repack] Jun 2026

Engineers use these specifications to design the voltage divider circuits that feed temperature and voltage data into the BMC. If the datasheet is

. It acts as a dedicated processor, often called a service processor, integrated onto motherboards to enable IT administrators to monitor, manage, and troubleshoot servers even when they are powered down or the operating system is unresponsive. ASPEED Technology Inc.

Important note from the datasheet's "Video Timing" section: The pixel clock can range from 25MHz to 200MHz. When using the analog DACs, external video filters (low-pass filters ~100MHz) are required to avoid EMI issues.

For years, one name has dominated this landscape: Aspeed. Their AST2400 and AST2500 chips have become the de facto standard for BMCs in enterprise hardware. For hardware engineers, firmware developers, and system architects, the is more than just a reference manual—it is the blueprint for system reliability. Aspeed Ast2500 Datasheet

The chip comes in a 456-pin TFBGA package with a 19mm x 19mm size. internet-lab.ru 5. Application Areas Server Management:

The is more than a list of electrical specifications; it is a blueprint for building reliable, secure remote management systems. From its 2D graphics engine to its hardened secure boot, every design decision is documented within its pages.

Warning: The datasheet notes that once the "Secure Boot fuse" is blown, it is irreversible. Designers must ensure the SPI flash contains a signed image before production. Engineers use these specifications to design the voltage

The AST2500 requires multiple voltage rails:

The AST2500 remains the "goldilocks" choice for legacy designs requiring mature software stacks (OpenBMC, AMI, Insyde) without the complexity of the dual-core AST2600. According to the , the device is fabricated on a 40nm process (compared to the older 80nm of the AST2400), offering better power efficiency.

To understand the datasheet, one must first understand the chip’s role. The Aspeed AST2500 is a System-on-Chip (SoC) designed specifically for server management. Unlike a general-purpose CPU (like an Intel Xeon or AMD EPYC), the AST2500 runs in the background. It is always on, even when the main server is powered down, as long as standby power is available. ASPEED Technology Inc

| Parameter | Value | |-----------|-------| | Core voltage | ~1.0V (internal regulator or external) | | I/O voltage | 3.3V / 1.8V (depending on bank) | | DDR voltage | 1.35V (DDR3L) or 1.2V (DDR4) | | Typical power | ~2.5W (full load) – fanless capable | | Sleep states | WFI, power gating of unused blocks | | Clock sources | 25 MHz crystal (main), 32.768 kHz (RTC) |

The AST2500 features an 800MHz ARM11 processor, delivering high performance for management tasks. Memory Support: