|Designed by||Apple Inc.|
|Max. CPU clock rate||520 MHz|
|Architecture and classification|
|Application||Apple Watch Series 2|
|Technology node||16 nm|
|Instruction set||ARM – ARMv7-A|
|Products, models, variants|
The Apple S2 is the integrated computer in the Apple Watch Series 2, and it is described as a "System in Package" (SiP) by Apple Inc. It was revealed on September 7, 2016, with very little info about specifications. Apple says its two cores deliver 50% higher performance and the GPU delivers twice as much as the predecessor, the Apple S1. The S1P SiP shipped in the Apple Watch Series 1 is a stripped down version of the S2 that lacks the GPS functionality, it is otherwise identical.
It uses a customized application processor that together with 512 MB memory, 8 GB storage and support processors for wireless connectivity, GPS, sensors and I/O constitute a complete computer in a single package. This package is filled with resin for durability.
The device integrates discrete components like Wi-Fi, Bluetooth, GPS, NFC, touch controller, accelerometers, barometric sensor and RAM. In total, there are 42 individual silicon dies integrated into the single S2 component.
An illustration of the encapsulated S2 package.
This is how large the S2 is compared to the Apple Watch Series 2 case.