REL0.1
Page 15 of 52
Snapdragon 820 SMARC SOM Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
2.4
Power Management
2.4.1
PM8996 PMIC
Snapdragon 820 SMARC SOM
supports Qualcomm’s PM8996 PMIC for
SMARC SOM power management. The versatile
design is suitable for multimode, multiband phones, and other wireless products such as data cards and PDAs. The
PM8996 mixed-signal BiCMOS device is available in the 225-pin wafer-level nanoscale package (225 WLNSP) that
includes ground pins for improved electrical ground, mechanical stability, and thermal continuity. The PM8996 PMIC
provides all required power to APQ8096 CPU and on board peripherals. This PMIC supports up to 12 switch mode
regulators, 32 linear regulators, on chip ADCs, Clock Sources, GPIOs and RTC charging.
Dedicated Serial power management interface (SPMI) used between CPU and PMIC for controlling and programming
the PMIC.
2.4.2
PMI8996 Battery Charging IC
The PMI8996 supplements the PM8996 device to integrate all wireless power management requirements. PMIC is
powered through PMI8996 IC, the main power is directly connected to PMI8996 for Input power management, Output
power management, battery monitoring and charging.
The PMI8996 mixed-signal BiCMOS device is available in the 210-pin wafer-level nanoscale package (210 WLNSP) that
includes ground pins for improved electrical ground, mechanical stability, and thermal conductivity.
2.5
Memory
2.5.1
LPDDR4 RAM
The Snapdragon 820 SMARC SOM supports 3GB LPDDR4 RAM in PoP package by default. The PoP memory provides
four 16-bit channels combining to form two 32-bit channels on the CPU. The package-on-package implementation
adds LPDDR4 SDRAM memory without increasing the device’s footprint or PCB area.
APQ8096 CPU is the first QTI
device to support LPDDR4 memory. Each LPDDR4 die contains two independent channels as specified by JEDEC and
supports for 6 Gb/8 Gb/12 Gb/16 Gb LPDDR4 SDRAM device.
2.5.2
eMMC Flash
The Snapdragon 820 SMARC SOM supports 32GB eMMC as default boot device and storage. This is connected to SDC1
controller of the APQ8096 CPU and operates at 1.8V (I/O supply) and 2.95V (NAND core supply) Voltage levels.
The eMMC flash (U24) memory is physically located on bottom side of the SMARC SOM. The memory size of the eMMC
Flash can be expandable and the APQ8096 CPU supports eMMC version 5.1V