Snapdragon Wear 4100+ Platform Combines Cortex-A53 Cores with Always-On Cortex M0 Core

Qualcomm entered the wearables market in 2016 with the launch of Snapdragon Wear 2100 quad-core Cortex A7 SoC, followed by other models all based on Cortex-A7 cores including the more recent Wear 3100 platform which also added a QCC1110 co-processor to extend battery life.

The company has now made the switch to 64-bit Arm with Snapdragon Wear 4100 and Wear 4100+ both featuring a quad-core Arm Cortex A53 processor and companion chips, but the latter adds QCC1100 Arm Cortex-M0 always-on (AON) co-processor to lower power consumption.

Snapdragon Wear 4100+
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Snapdragon Wear 4100+ key features and specifications:

  • SoC – Qualcomm SDM429w or SDA429w
    • CPU – Quad-core Cortex-A53 @ up to 1.7 GHz
    • GPU – Adreno A504 GPU up to 320 MHz with OpenGL ES 3.1 API support
    • DSP – Dual Qualcomm Hexagon QDSP6 v56, dedicated MDSP for modem and GPS, and dedicated ADSP for Open Sensor Execution Environment (SEE) and audio
    • Memory & Storage I/F – LPDDR3 up to 750 MHz, eMMC 5.1 flash (ePoP memory)
    • Display – MIPI-DSI up to 1080p 30fps
    • Peripherals – USB 2.0
    • Process – 12nm technology
  • AON co-processor – Qualcomm QCC1110
    • CPU – Cortex-M0 microcontroller core
    • Custom-designed SRAM
    • Deep learning engine for custom workloads
    • Display – SPI interface for display supporting up to 64K colors
    • Various I/Os
    • PMIC (See Power Management section)
    • 21mm2 footprint
  • Connectivity
    • Bluetooth 5.0 via Qualcomm WCN3610 or WCN3980
    • Bluetooth 4.2 via Qualcomm WCN3620 or WCN3660B
    • 802.11a/b/g/n (2.4GHz) WiFi
    • Integrated NFC with support from NXP
    • Cellular
      • Snapdragon X5 LTE Cat 4/3/1 Global Mode modem with support for LTE FDD, LTE TDD, 1x Adv, EV-DO Rev. A, TD-SCDMA; and GSM/EDGE
      • Qualcomm WTR2965 modem nd GPS RF
      • Qualcomm QPA4360, QSW8573, QET4101 Gallium Arsenide PAs
  • Location
    • Gen 8C Satellite: GPS, Glonass, Beidou, Galileo
    • Terrestrial: Wi-Fi, Cellular
    • Qualcomm Sensor Assisted Positioning for Wearables
  • Audio & Voice – Qualcomm Voice Suite, Qualcomm Voice Noise Suppression and Echo Cancellation, Qualcomm  Voice Activation, Qualcomm Aqstic audio codec, and speaker amplifier
  • Security Features
    • Qualcomm Processor Security feature
    • Qualcomm Trusted Execution Environment (TEE) 4.0.5
  • Power Management
    • Wearable PMIC optimized for low power and high integration
    • Battery charging, fuel gauge, and haptics driver functionality

Snapdragon Wear 4100+ supports Wear OS by Google, while Snapdragon Wear 4100 supports both Wear OS by Google and Android Open Source Project (AOSP). QCC1110 co-processor runs an unnamed RTOS.

Snapdragon Wear 4100+ is expected to deliver more than 85% faster performance compared to Snapdragon Wear 3100,  and consume 25% less power. QCC1100 AON co-processor has been optimized to allow up to 64K colors instead of just 16 colors, and enables continuous heart rate monitoring, faster tilt-to-wake responsiveness, steps, alarms, timers, and haptics.

Next-generation imoo Z6 Ultra and Mobvoi Tic Watch Pro smartwatches will be powered by Snapdragon Wear 4100+, and start shipping in about one month. You may find additional information on the product page and/or press release.

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