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Cortex-A12 µarch
General Info
Arch Type	CPU
Designer	ARM Holdings
Manufacturer	TSMC
Introduction	June 2, 2013
Succession
Cortex-A9 Cortex-A17

Cortex-A12 (codename Owl) is the successor to the Cortex-A9, a mid-range performance ARM microarchitecture designed by ARM Holdings for the mobile market. This microarchitecture is designed as a synthesizable IP core and is sold to other semiconductor companies to be implemented in their own chips. The Cortex-A12 was designed to be paired with the low-power Cortex-A7 in a big.LITTLE configuration.

Note that Arm withdrew the Cortex-A12 from their product offering in October 2014 due to having design and performance parameters very similar to its successor, the Cortex-A17.

Architecture

Key changes from Cortex-A9

• 28 nm process (from 40 nm)
• Longer pipeline (11, up from 9-12)
• Integer
  • Hardware division support
  • Hardware Fused Multiply-Accumulate
• VFPv4 (from VFPv3)
• NEONv2 (from NEON)
• Added LPAE support

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Block Diagram

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Memory Hierarchy

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