This document provides information on smartphone hardware architecture. It discusses key components such as the application and connectivity processor chips, memory, wireless capabilities, batteries, and sensors. Specific smartphones are also summarized, including the Apple iPhone 5S which uses the A7 64-bit processor and Touch ID fingerprint sensor, and the Samsung Galaxy S4 which employs the Exynos 5 Octa chip with ARM's big.LITTLE architecture. Diagrams depict the internal layout and connectivity of components in these devices.

1. Mokwon University
Yong Heui CHO(조용희)
yhcho@mwu.ac.kr
Smartphone Hardware
Architecture

2. Definition
 Smartphone
 Mobile phone + computer + sensors +
wireless I/O
 Mobile OS: speed vs. battery life
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←inbritech.com

3. Computer of Tomorrow
Devoid of CPU and memory
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4. Smartphone HW: AP
 Application Platform Chip
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AP: Application Processor
Flash memory
Mobile Dynamic RAM
PMU: Power Management Unit
Audio Codec
Bluetooth
WiFi
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5. Smartphone HW: CP
 Connectivity Platform Chip
 CPU: Central Processing Unit
 DSP: Digital Signal Processing
 RF baseband processing
 Voice processing
 PA: Power Amplifier
 Tx-Rx switch
 DAC + ADC
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6. World Phone Capability
 UMTS/HSDPA/HSUPA
 850, 900, 1900, 2100 MHz
 GSM/EDGE
 850, 900, 1800, 1900 MHz
 CDMA EV-DO Rev. A
 800, 1900 MHz
-UMTS: Universal Mobile Telecommunications System
-HSDPA: High Speed Downlink Packet Access
-GSM: Global System for Mobile communication
-EDGE: Enhanced Data rates for GSM Evolution
-EV-DO: Evolution-Data Optimized
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7. Openmoko Project
 Open source mobile phone project
UART: Universal Asynchronous Rx/Tx
SDIO: Secure Digital I/O
GPIO: General Purpose I/O
I2C: Inter-Integrated Circuit
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8. Apple iPhone 5S
 Apple released iPhone 5S in Sept. 2013.
 A7 dual-core processor: the first 64-bit
processor for a smartphone
 M7 motion coprocessor
 Touch ID: fingerprint recognition system
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←ifixit.com

9. Breakdown of iPhone 5S
Without battery
326 ppi Retina display
←ifixit.com
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Mother-Board

10. Li-ion Battery
 3.8 [V]: used for bias of active devices
(amplifiers, mixers, …)
 This voltage should be small to consume
smaller power (P = I x V)
 5.92 [Whr]: unit for energy (W x hour)
 1,560 [mAhr]: unit for current duration
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11. Apple A7 Processor
 SoC (System on Chip): 64 bits, 1.3 GHz, 1GB(?)
 Instruction set (architecture): ARMv8-A (many
registers)
 Core: Cortex-A53/A57(?)
 Designed by Apple (licensed from ARM) and
manufactured by Samsung
NEON: Multimedia
Instruction
SIMD: Single Instruction Multiple Data
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Data

12. Home Button & Touch ID
 Fingerprint scanner
 CMOS chip and bunch of capacitors
 Detection by very small capacitors
 Developed by AuthenTec
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13. WiFi Module
 Murata 339S0205 Wi-Fi module based on
the Broadcom BCM4334
 Dual-band 2.4 GHz and 5 GHz IEEE 802.11
a/b/g/n Wi-Fi connectivity
 Bluetooth 4.0 + HS (High Speed)
 Integrated FM radio receiver
 5G WiFi(?): 2x2 MIMO
WiFi Module
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14. Mother-Board
M7 Motion Coprocessor
A7 Processor
Qualcomm MDM9615M Baseband Modem
Qualcomm WTR1605L LTE/HSPA+/CDMA2K/TDSCDMA/EDGE/GPS Transceiver
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15. Samsung Galaxy S4
 Samsung released Galaxy S4 in April 2013.
 Samsung Exynos 5 Octa: big.LITTLE
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←ifixit.com

16. Li-ion Battery
 3.8 [V]: used for bias of active devices
(amplifiers, mixers, …)
 This voltage should be small to consume
smaller power (P = I x V)
 9.88 [Whr]: unit for energy (W x hour)
 2,600 [mAh]: unit for current duration
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17. Exynos 5 Octa
 1.6 GHz quad-core ARM Cortex-A15
and 1.2 GHz quad-core ARM CortexA7 (ARM big.LITTLE), 2GB RAM
 Designed by Samsung (licensed from
ARM) and manufactured by Samsung
←electronicsweekly.com
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←howchip.com

18. Sensors
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←androidheadlines.com

19. Antennas
←raymaps.com
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20. Nexus5 Block Diagram
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