LS1021AXE7HNB557
LS1021AXE7HNB557 - QorIQ LS1021A 800MHz Dual Cortex-A7 MPU | NXP
The NXP LS1021AXE7HNB557 is a 32-bit dual-core ARM Cortex-A7 communications microprocessor from the QorIQ Layerscape LS1 family, operating up to 800 MHz and housed in a 525-ball FCPBGA (19x19 mm) package with security and ECC acceleration enabled. The integrated memory controller supports DDR3L and DDR4 with hardware ECC, and the SoC integrates display, networking, and high-speed serial interfaces including vTSEC Gigabit Ethernet, USB 3.0, SATA 3.0, and PCIe Gen 2 controllers.
A microprocessor (MPU) is a system-on-chip that integrates one or more CPU cores, cache, memory controllers, and peripheral IP into a single device, forming the compute core of an embedded system. MPU variants designed for communications often add packet processing acceleration, security engines, and high-bandwidth interconnect fabrics; the QorIQ Layerscape family from NXP targets industrial networking, factory automation, edge gateways, and small-cell wireless infrastructure with hardware crypto offload and deterministic packet latency.
Key features of the LS1021AXE7HNB557 include dual Cortex-A7 cores with NEON and FPU, an LCD controller (LCDC), a 2D graphics accelerator (2D-ACE), three Gigabit Ethernet MACs (vTSEC), PCIe Gen 2.0 root complex and endpoints, USB 3.0, SATA 3.0, two CAN-FD controllers, UART, SPI, I2C, and the SEC security engine for cryptographic acceleration. The device supports industrial temperature grades of -40C to +105C and is offered in a 19x19 mm 525-FCPBGA package with a 0.8 mm ball pitch.
The Layerscape architecture is core-agnostic and software-aware, allowing the same ARMv7-A toolchain (gcc, Yocto, Buildroot) to be reused across LS1, LS2, and LS104x parts for code portability. Integrated packet-processing accelerators and a memory coherency fabric reduce CPU overhead for line-rate Gigabit routing, while the SEC engine handles AES, 3DES, SHA, RSA, and ECC without burdening the application cores.
Typical applications include industrial IoT gateways, factory automation controllers, network-attached storage (NAS), small-cell base stations, smart-grid concentrators, and Human-Machine Interface (HMI) panels requiring an LCD controller and secure communications. The combination of Cortex-A7 compute density, low-power operation, and integrated cryptography makes it well suited for secure edge devices.
When designing with this device, allocate sufficient PCB layers (at least 8) for the 525-ball BGA breakout, place the DDR3L/DDR4 traces with matched lengths and 100 ohm differential impedance, and follow NXP's reference design guidelines for power-rail sequencing and thermal dissipation. A high-frequency external clock source is required for the vTSEC Gigabit Ethernet PHYs.
This page synthesizes distributor availability, drop-in LS1 family alternatives, and practical PCB layout guidance drawn from the NXP Layerscape LS1021A datasheet and reference manual - content not assembled on a single distributor page.
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