A typical top-down documentation tree is: IC Manufacturer's high-level marketing slides IC Manufacturer datasheet for the exact physical chip IC Manufacturer Reference Manuals — describes common peripherals and other aspects of physical chips within the same series ARM Core Reference Manuals — for the exact ARM core processor within the chip ARM Architecture Reference Manuals — includes detailed description of all instruction sets of the core IC Manufacturers usually have additional documents, including: evaluation board user manuals, application notes, getting started with development software, software library documents, errata, and more. See also ARM architecture Comparison of ARMv7-A cores Comparison of ARMv8-A cores JTAG, SWD List of ARM microarchitectures and cores References External links ARM Cortex-A official documents {| class="wikitable" style="text-align:center;" |- ! ARMCore !! BitWidth !! ARMWebsite !! ARM TechnicalReference Manual !! ARM ArchitectureReference Manual |- | style="background: LightCyan" | Cortex-A5 || 32 || Link || Link || rowspan=7 | ARMv7-A |- | style="background: LightCyan" | Cortex-A7 || 32 || Link || Link |- | style="background: LightCyan" | Cortex-A8 || 32 || Link || Link |- | style="background: LightCyan" | Cortex-A9 || 32 || Link || Link |- | style="background: LightCyan" | Cortex-A12 || 32 || colspan=2 |- | style="background: LightCyan" | Cortex-A15 || 32 || Link || Link |- | style="background: LightCyan" | Cortex-A17 || 32 || Link || Link |- | style="background: LightCyan" | Cortex-A32 || 32 || Link || Link || rowspan=4 | ARMv8-A |- | style="background: LightCyan" | Cortex-A34 || 64 || Link || Link |- | style="background: LightCyan" | Cortex-A35 || 32/64 || Link || Link |- | style="background: LightCyan" | Cortex-A53 || 32/64 || Link || Link |- | style="background: LightCyan" | Cortex-A55 || 32/64 || Link || Link || ARMv8.2-A |- | style="background: LightCyan" | Cortex-A57 || 32/64 || Link || Link || ARMv8-A |- | style="background: LightCyan" | Cortex-A510 || 64 (2021)32/64 (2022) || Link || Link || ARMv9-A |- | style="background: LightCyan" | Cortex-A65 || 64 || Link || Link || ARMv8.2-A |- | style="background: LightCyan" | Cortex-A72 || 32/64 || Link || Link || rowspan=2 | ARMv8-A |- | style="background: LightCyan" | Cortex-A73 || 32/64 || Link || Link |- | style="background: LightCyan" | Cortex-A75 || 32/64 || Link || Link || rowspan=4 | ARMv8.2-A |- | style="background: LightCyan" | Cortex-A76 || 32/64 || Link || Link |- | style="background: LightCyan" | Cortex-A77 || 32/64 || Link || Link |-