The Apple S1 is the integrated computer in the Apple Watch, and it is described as a "System in Package" (SiP) by Apple Inc.[7]
 The S1 integrated computer, 2.5 cm wide[1] | |
| General information | |
|---|---|
| Launched | 13 November 2014 |
| Discontinued | 7 September 2016 |
| Designed by | Apple Inc. |
| Common manufacturer | |
| Product code | APL0778[3] |
| Performance | |
| Max. CPU clock rate | 520 MHz[4] |
| Cache | |
| L1 cache | 32 KB data[4] |
| L2 cache | 256 KB[4] |
| Architecture and classification | |
| Application | Apple Watch |
| Technology node | 28 nm[4][2] |
| Instruction set | ARMv7-A[4] |
| Physical specifications | |
| Cores |
|
| GPU | PowerVR SGX543[5] |
| Products, models, variants | |
| Variant | |
| History | |
| Successor | Apple S2 |
 | |
| General information | |
|---|---|
| Launched | September, 2016 |
| Discontinued | September, 2018 |
| Designed by | Apple Inc. |
| Performance | |
| Max. CPU clock rate | 520 MHz[6] |
| Architecture and classification | |
| Application | Apple Watch Series 1 |
| Microarchitecture | ARMv7-A compatible[6] |
| Instruction set | ARM[6] |
| Physical specifications | |
| Cores |
|
| GPU | PowerVR Series 6 'Rogue'[6] |
| History | |
| Predecessor | Apple S1 |
Samsung is said to be the main supplier of key components, such as the RAM and NAND flash storage, and the assembly itself,[8] but early teardowns reveal RAM and flash memory from Toshiba and Micron Technology.[3]
System-in-Package design
editIt uses a customized application processor that together with memory, storage and support processors for wireless connectivity, sensors and I/O constitute a complete computer in a single package. This package is filled with resin for durability.[9]
Components
editFrom reverse engineering, the processor handling the Wi-Fi and Bluetooth is a Broadcom BCM43342[10] and the six-axis gyroscope is from STMicroelectronics.[2]
- Apple designed 32-bit ARMv7[11] based application processor APL0778 as the central processing unit (CPU), with an integrated PowerVR SGX543 graphics processing unit (GPU).[5]
- 512 MB DRAM from Elpida, wire bonded on top of the APL0778 CPU
- NFC controller from NXP
- NFC booster chip from AMS
- 8 GB flash from SanDisk and Toshiba
- Wireless charging chip from IDT
- Touch controller from ADI
- Integrated gyro/accelerometer from STMicroelectronics
- BCM43342 Wi-Fi/FM/BT combo chip from Broadcom
- Power management unit (PMU) from Dialog Semiconductor
S1P
editThe SiP in Apple Watch Series 1 is called S1P and looks superficially identical to the S1, but in reality is an S2 minus the on-chip GPS functionality. It contains the same dual-core CPU with the same new GPU capabilities as the S2 making it about 50% faster than the S1.[12][13]
Announcement
editThe S1 was announced on 9 September 2014 as part of the "Wish we could say more" event.
The S1P was announced on 7 September 2016 as part of the "See you on the 7th" event.
Launch date
editThe S1 made its first appearance within the Apple Watch, which arrived in April 2015.[7][14] The S1 was discontinued with the launch of Apple Watch Series 1, containing the S1P.
The S1P was released with the Apple Watch Series 1 on 16 September 2016.[13]
Images
edit![This illustration shows the positions of the chips and other components inside the S1 package.[15]](/wiki/File:Apple-S1-chips.jpg)
![This is how large the S1 is compared to the Apple Watch case.[15]](/wiki/File:Apple-S1-in-watch.jpg)
![A size comparison of the S1 to the Apple A6 in the iPhone 5[15]](/wiki/File:S1-A6_Comparison.jpg)
See also
edit- Apple silicon, the range of ARM-based processors designed by Apple.
- Apple Watch
- Apple S2
References
edit- ^ "s1_decapped_abi.jpg". 30 April 2015. Archived from the original on 5 May 2016. Retrieved 1 May 2016.
- ^ a b c "Inside the Apple Watch: Technical Teardown". Archived from the original on 18 May 2015. Retrieved 30 April 2015.
- ^ a b "Apple Watch Insides / PCB Details Revealed for the First Time". ABI Research. Archived from the original on 6 June 2017. Retrieved 30 April 2015.
- ^ a b c d e f Ho, Joshua; Chester, Brandon (20 July 2015). "The Apple Watch Review: Apple S1 Analysis". AnandTech. Archived from the original on 22 July 2015. Retrieved 27 July 2015.
- ^ a b "Apple Watch runs 'most' of iOS 8.2, may use A5-equivalent processor". AppleInsider. Archived from the original on 26 April 2015. Retrieved 25 April 2015.
- ^ a b c d e "The Apple Watch Series 2 Review: Building Towards Maturity". Archived from the original on 22 October 2017. Retrieved 11 February 2018.
- ^ a b "Apple Unveils Apple Watch". Apple Inc. Archived from the original on 19 April 2017. Retrieved 8 October 2014.
- ^ "Samsung Supposedly Wins Orders to Produce Apple Watch Components". Archived from the original on 30 April 2015. Retrieved 9 January 2015.
- ^ a b "Apple.com - Apple Watch - Technology". Apple. Archived from the original on 9 September 2014. Retrieved 8 October 2014.
- ^ "Broadcom Wins WiFi in Apple Watch?". Chipworks. Archived from the original on 6 October 2014. Retrieved 8 October 2014.
- ^ "Hopper happily opens Apple Watch binaries ('armv7k') to disassemble, says they're 'armv7m'. -- Steve Troughton-Smith". Archived from the original on 3 March 2016. Retrieved 25 June 2015.
- ^ "We Just Took Apart the Apple Watch Series 1—Here's What We Found Out". Archived from the original on 24 January 2018. Retrieved 13 October 2016.
- ^ a b "Apple Introduces Apple Watch Series 2, The Ultimate Device For A Healthy Life". Archived from the original on 14 April 2017. Retrieved 8 September 2017.
- ^ "Tim Cook: Apple Watch on Schedule to Ship in April". Archived from the original on 4 April 2015. Retrieved 30 January 2015.
- ^ a b c d "Introducing the Apple Watch - Movie". Apple. Archived from the original on 7 October 2014. Retrieved 8 October 2014.
