Apple S2

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.^[2] Apple says its two cores deliver 50% higher performance and the GPU delivers twice as much as the predecessor, the Apple S1.^[3] 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.^[4]

Apple S2

General information
Launched	September, 2016
Discontinued	September, 2017
Designed by	Apple Inc.
Common manufacturer	TSMC
Performance
Max. CPU clock rate	520 MHz[1]
Architecture and classification
Application	Apple Watch Series 2
Technology node	16 nm
Instruction set	ARM – ARMv7-A
Physical specifications
Cores	2[1]
Products, models, variants
Variant	Apple S1P
History
Predecessor	Apple S1
Successor	Apple S3

System-in-Package design

It uses a customized application processor that together with 512 MB memory,^[1] 8 GB storage^[1] 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.

Components

The device integrates discrete components like Wi-Fi, Bluetooth, GPS, NFC, touch controller, accelerometers, barometric sensor^[5] and RAM. In total, there are 42 individual silicon dies^[6] integrated into the single S2 component.

Images

• 
  An illustration of the encapsulated S2 package
• 
  This is how large the S2 is compared to the Apple Watch Series 2 case.

See also

• Apple silicon, the range of ARM-based processors designed by Apple
• Apple Watch