Specifications

The Cortex-A8 processor is a high-performance and low-power application processor that provides full virtual memory capabilities

The Cortex-A8 was first introduced in 2005 and was the first processor to support the Armv7-A architecture. Since its introduction, the Cortex-A8 processor has been superseded by the Cortex-A15 and Cortex-A17 processors, but it represents a turning point upwards in the race for efficient high-performance 32-bit compute, and it is still widely deployed in many embedded applications.

Information on Cortex-A8.
Architecture Armv7
Multicore Single core only
ISA Support
Memory Management Unit (MMU)
Armv7 Memory Management Unit (MMU)
Debug and Trace
CoreSight

Characteristics

The Cortex-A8 processor was the first to use the Armv7-A architecture. Armv7 incorporated three key elements: the Neon single instruction multiple data (SIMD) unit, Arm TrustZone security extensions, and the Thumb-2 instruction set for reduced code size via a mix of 16-bit and 32-bit extensions. The Cortex-A8 implements the extended ISA in the first ever fully superscalar design from Arm. It has a full dual-issue pipeline, meaning the Cortex-A8 can simultaneously issue any two instructions that occur sequentially in the instructions stream whose arguments do not have unresolved dependencies.

The processor has a number of features which make it ideal for use in high-performance end products. A symmetric, superscalar pipeline allows for full dual-issue capability and high-frequency configurations. There is an advanced branch prediction unit with over 95% accuracy, and an integrated L2 cache provides optimal performance in demanding systems. The Cortex-A8 supports Neon technology, allowing it to take advantage of accelerated multimedia and DSP processing.

The Arm Cortex-A8 processor has the ability to scale in speed from 600MHz to greater than 1GHz, meeting the requirements for power-optimized mobile devices needing operation in less than 300mW and performance-optimized consumer applications.


Cortex-A comparison table for Armv7-A and Armv8-A

Download the following PDF datasheet to compare the specifications of Cortex-A Armv7-A and Armv8-A processors.

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Cortex-A comparison (Armv8-A)

Feature Cortex-A32 Cortex-A34 Cortex-A35 Cortex-A53 Cortex-A55 Cortex-A57 Cortex-A65 Cortex-A65AE Cortex-A72 Cortex-A73 Cortex-A75 Cortex-A76 Cortex-A76AE Cortex-A77 Cortex-A78
Instruction set architecture and extensions Armv8-A AArch32 only Armv8-A AArch64 only Armv8-A Armv8-A Armv8-A, Armv8.1 extensions, Armv8.2 extensions, Cryptography extensions, RAS extensions, Armv8.3 (LDAPR instructions only), Armv8.4 Dot Product Armv8-A Armv8-A
AArch64
only

Armv8-A, Armv8.1 extensions, Armv8.2 extensions, Cryptography extensions, RAS extensions, Armv8.3 (LDAPR instructions only)
Armv8-A, Armv8.1 extensions, Armv8.2 extensions, Cryptography extensions, RAS extensions, Armv8.3 (LDAPR instructions only), Armv8.4 Dot Product Armv8-A Armv8-A Armv8-A, Armv8.1 extensions, Armv8.2 extensions, Cryptography extensions, RAS extensions, Armv8.3 (LDAPR instructions only), Armv8.4 Dot Product Armv8-A
AArch64,
AArch32 at EL0

Armv8-A, Armv8.1 extensions, Armv8.2 extensions, Cryptography extensions, RAS extensions, Armv8.3 (LDAPR instructions only), Armv8.4 Dot Product
Armv8-A
AArch64,
AArch32 at EL0

Armv8-A, Armv8.1 extensions, Armv8.2 extensions, Cryptography extensions, RAS extensions, Armv8.3 (LDAPR instructions only), Armv8.4 Dot Product
Armv8-A
AArch64
AArch32 at EL0

Armv8-A, Armv8.1 extensions, Armv8.2 extensions, Cryptography extensions, RAS extensions, Armv8.3 (LDAPR instructions only), Armv8.4 Dot Product
Armv8-A, Armv8.1 extensions, Armv8.2 extensions, Cryptography extensions, RAS extensions, Armv8.3 (LDAPR instructions only), Armv8.4 Dot Product
Pipeline In order In order In order In order In order Out of order Out of order Out-of-order Out of order Out of order Out-of-order Out-of-order Out-of-order Out-of-order
Out-of-order
Superscalar       Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Yes
Neon and Floating Point Unit Optional Optional Optional Optional Optional Included Included Included Included Included Included Included Included Included
Included
Floating Point Unit only N/A N/A N/A N/A N/A Included Included Included Included Included Included Included Included Included
Included
Cryptography Unit Optional Optional Optional Optional Optional Optional Optional Optional Optional Optional Optional Optional Optional Optional
Optional
Physical Addressing (PA) 40-bit 40-bit 40-bit 40-bit 40-bit 40-bit 44-bit 44-bit 44-bit 40-bit 44-bit 40-bit 40-bit 40-bit
40-bit
Dual Core Lock-Step (DCLS) No No No No No No No Yes (in safety-mode) No No No No Yes (in safety-mode) No
No
L1 I-Cache / D-Cache 8KB-64KB 8KB-64KB 8K-64KB 8KB-64KB 16KB-64KB 48KB/32KB 16KB to 64KB 16KB to 64KB 48KB/32KB-64KB 32KB/32KB-64KB 64KB 64KB 64KB 64KB
64KB
L2 Cache 128KB-1MB 128KB-1MB 128KB-1MB 128KB-2MB 64KB-256KB 512KB-2MB 64KB to 256KB 64KB to 256KB 512KB-4MB 256KB-8MB 256KB to 512KB 256KB to 512KB 256KB to 512KB 256KB to 512KB
256KB to 512KB
L3 Cache NA NA NA NA Optional
From 256KB to 4MB
NA Optional 512KB to 4MB Optional 512KB to 4MB NA NA Optional 512KB to 4MB Optional 512KB to 4MB Optional 512KB to 4MB Optional 512KB to 4MB
Optional 512KB to 4MB
ECC / Parity Yes Yes Yes Yes Yes Yes Yes Yes Yes L2 only Yes Yes Yes Yes
Yes
LPAE Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Yes
Bus Interfaces ACE or CHI ACE or CHI ACE or CHI ACE or CHI ACE or CHI ACE or CHI ACE or CHI ACE or CHI ACE or CHI ACE ACE or CHI ACE or CHI ACE or CHI ACE or CHI
ACE or CHI
ACP Optional Optional Optional Optional Optional Yes Optional Optional Optional Yes Optional Optional Optional Optional
Optional
Peripheral Port         Optional   Optional Optional     Optional Optional Optional Optional
Optional
Functional Safety Support Yes Yes Yes Yes Yes Yes   Yes Yes   Yes Yes Yes Yes
ASIL D systematic
Security TrustZone TrustZone TrustZone TrustZone TrustZone TrustZone TrustZone TrustZone TrustZone TrustZone TrustZone TrustZone TrustZone TrustZone
TrustZone
Interrupt Controller External
GICv3
External
GICv3
External
GICv3
External
GICv3
External
GICv4
External
GICv3
External
GICv4
External
GICv4
External
GICv3
External
GICv3
External
GICv4
External
GICv4
External
GICv4
External
GICv4
External
GICv4
Generic Timer Armv8-A Armv8-A Armv8-A Armv8-A Armv8-A Armv8-A Armv8-A Armv8-A Armv8-A Armv8-A Armv8-A Armv8-A Armv8-A Armv8-A
Armv8-A