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Deep Dive ReportLG G Watch W100
Bluetooth 4.0Report #17000-140821-ASd
Product Description
The LG G Watch W100 is a IP67-certified smartwatch and activity tracking device worn like a regular wristwatch. All notifications, time, and activity information are displayed on a 1.65-in. IPS TFT-LCD display with 280 x 280 resolution, 16M colors, and a Corning Gorilla Glass 3 overlay for extra durability. Navigating to various screens is made possible using the multitouch capacitive touchscreen.
The G W100 runs the Android Wear operating system on a 1.2 GHz quad-core Qualcomm Snapdragon 400 (APQ8026) processor with 512 MB RAM. The smartwatch has 4 GB of internal memory and a built-in microphone for voice activation. Connectivity is provided by Bluetooth 4.0 while a microUSB is located on the included charging cradle. Sensors include a 6-axis MEMS gyroscope & accelerometer, 3-axis MEMS accelerometer, and 3-axis electronic compass. The LG G Watch LG-W100 is powered by 3.8 V, 400 mAh Li-Polymer battery. Battery life is unknown.
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Estimated block diagram based on observation of this specific product implementation, manufacturer’s data sheets where available, and best engineering judgment. Certain details of the interface circuitry are not reflected in this block diagram. Partitioning and connectivity are speculative.
Block Diagram
1 - Qualcomm#APQ8026
Snapdragon 400 Applications Processor
2 - SK Hynix#H9TU32A4GDMCLR-KGM
Multichip Memory - 512 MB Mobile DDR2-S4 SDRAM, 4 GB MLC NAND Flash, Memory Controller
3 - Qualcomm#PM8226
Power Management
4 - Invensense#MPU-6515
6-Axis MEMS Gyroscope & Accelerometer
5 - STMicroelectronics#LIS3DSH
3-Axis MEMS Accelerometer
6 - Texas Instruments#LM3530
Ambient Light-Sensing White LED Driver
8 - Maxim#MAX17050Fuel Gauge
10 - Broadcom#BCM20715
Single-Chip Bluetooth 4.0 Controller
11 - AKM Semiconductor#AK8963C
3-Axis Electronic Compass
15 - Novatek#NA01398
TFT-LCD Display Driver
16 - Seiko Instruments#S-8200A ?
Battery Protection
Bluetooth Antenna
Vibrator14 - IMAGIS#ISA1000
Haptic Driver
Microphone
Charging Terminals
? = Unconfirmed
9 - Synaptics#S3402B
Capacitive Touchscreen Controller
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Component Arrangement
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Main Board (Side 1)
Grid = 1 cm
Reset Button
Charging Terminals
Vibrator
Touchscreen
Display
Bluetooth Antenna Battery
Microphone
Backup Battery
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Main Board (Side 1 IC Identification)
Package on Package
3 - Qualcomm#PM8226Power Management
4 - Invensense#MPU-65156-Axis MEMS Gyroscope & Accelerometer
5 - STMicroelectronics#LIS3DSH3-Axis MEMS Accelerometer (2-Die Pkg.)
6 - Texas Instruments#LM3530Ambient Light-Sensing White LED Driver
7 - Fairchild Semiconductor#FTL11639Configurable Load Switch w/ Reset Timer
8 - Maxim#MAX17050Fuel Gauge
1 - Qualcomm#APQ8026Snapdragon 400 Applications Processor
2 - SK Hynix#H9TU32A4GDMCLR-KGMMultichip Memory - 512 MB Mobile DDR2-S4 SDRAM, 4 GB MLC NAND Flash, Memory Controller (3-Die Pkg.)Grid = 1 cm
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Main Board (Side 2 IC Identification)
9 - Synaptics#S3402BCapacitive Touchscreen Controller
10 - Broadcom#BCM20715Single-Chip Bluetooth 4.0 Controller
11 - AKM Semiconductor#AK8963C3-Axis Electronic Compass
12 - Unknown#UnknownEEPROM Memory - 8 KB ?
13 - ON Semiconductor#NLAS7222CUSB 2.0 DPDT Switch
14 - IMAGIS#ISA1000Haptic Driver
Grid = 1 cm