Apple S1
System-in-package in Apple Watch
From Wikipedia, the free encyclopedia
The Apple S1 is the integrated computer in the first-generation 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] |
| Physical specifications | |
| Cores |
|
| GPU | PowerVR SGX543[5] |
| 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] |
| 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] |
| Physical specifications | |
| Cores |
|
| GPU | PowerVR Series 6 'Rogue'[6] |
| Architecture and classification | |
| Application | Apple Watch Series 1 |
| Microarchitecture | ARMv7-A compatible[6] |
| Instruction set | ARM[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
It 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
From 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
The 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
The 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
The 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
See also
- Apple silicon, the range of ARM-based processors designed by Apple.
- Apple Watch
- Apple S2