ARM Cortex-A520

The ARM Cortex-A520 is a "little" CPU core model from Arm unveiled in TCS23 [1][2][3] it serves as a successor to the CPU core ARM Cortex-A510. The Cortex-A500 CPU cores series generally focus on high efficiency, the CPU core can be paired with the other CPU cores in its family like ARM Cortex-A720 or/and Cortex-X4 in a CPU cluster.[4]

ARM Cortex-A520
General information
Launched2023
Designed byARM Ltd.
Cache
L1 cache64/128 KiB (32/64 KiB I-cache with parity, 32/64 KiB D-cache) per core
L2 cache0–512 KiB per complex
L3 cache256 KiB – 32 MiB (optional)
Architecture and classification
MicroarchitectureARM Cortex-A520
Instruction setARMv9-A
Products, models, variants
Product code name(s)
  • Hayes
History
Predecessor(s)ARM Cortex-A510
Successor(s)ARM Cortex-A530

Improvements
  • 8% peak performance improvement over the Cortex-A510[5]
  • Support only 64-bit applications
  • Up to 512 KiB of private L2 cache (From 256 KiB)
  • Add QARMA3 Pointer Authentication (PAC) algorithm support
  • Update to ARMv9.2[6]

Architecture comparison
uArch Cortex-A53 Cortex-A55 Cortex-A510 Cortex-A520
Peak clock speed 2.3 GHz 2.1 GHz 2.0 GHz 2.0 GHz
Decode Width 2 3 3 (2 ALU)
Dispatch 8[7]
Max In-flight None (In-order)
branch predictor

history (entries)

 3072[8]
L0 (Mops entries) None
L1-I + L1-D 8/64+8/64 KiB 16/64+16/64 KiB 32/64+32/64 KiB
L2 0–256 KB 0–512 KB
L3 ? 0–4 MiB 0–16 MiB 0-32 MiB
AArch 32-bit and 64-bit 64-bit
Architecture ARMv8.0-A ARMv8.2-A ARMv9.0-A ARMv9.2-A

See also

References
  1. Bonshor, Gavin. "Arm Unveils 2023 Mobile CPU Core Designs: Cortex-X4, A720, and A520 - the Armv9.2 Family". www.anandtech.com. Retrieved 2023-05-30.
  2. "Arm Launches Next-Gen Efficiency Core; Cortex-A520". WikiChip Fuse. 2023-05-28. Retrieved 2023-09-16.
  3. "Arm Cortex-X4, A720, and A520: 2024 smartphone CPUs deep dive". Android Authority. 2023-05-29. Retrieved 2023-06-05.
  4. "Cortex-A520". developer.arm.com. Retrieved 2023-09-16.
  5. Bonshor, Gavin. "Arm Unveils 2023 Mobile CPU Core Designs: Cortex-X4, A720, and A520 - the Armv9.2 Family". www.anandtech.com. Retrieved 2023-06-05.
  6. Ltd, Arm. "Cortex-A520". Arm | The Architecture for the Digital World. Retrieved 2023-06-05.
  7. "A closer look at ARM's new Cortex-A75 and Cortex-A55 CPUs". Android Authority. 2017-05-31. Retrieved 2023-06-05.
  8. "ARM's Cortex A53: Tiny But Important". Chips and Cheese. 2023-05-28. Retrieved 2023-06-14.


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