Reference Guide

January 2021
Description
Reference
Designator
Volatility Description
User Accessible
for external data
Remedial Action (Action
necessary to prevent loss of
data)
Touch
screen
Embedded
Flash
Part of panel
assembly
I2C interface of embedded Flash
memory
No Part of panel assembly
Acceleromet
er + Gyro
LSM6DSLU
STR
UG1 for 360 2-in-1
UG2 for 180
clamshell
I2C interface of embedded Flash
memory
No N/A
Acceleromet
er
(secondary)
LIS2DW12T
R
UAC1 I2C interface of embedded Flash
memory
No N/A
Compass
LIS2MDLTR
UCOM1 I2C interface of embedded Flash
memory
No N/A
ALS
TCS3430
Part of camera
assembly
I2C interface of embedded Flash
memory
No Part of camera assembly
TPM 2.0
ST33HTPH2
X32AHD8
U712 SPI interface of embedded Flash
memory
No Low level format
MCU
ATSAMD21E
16C-UUT
U717 USB interface of embedded Flash
memory
No N/A
CVF
CLOVER_FA
LLS
UCVF1 eSPI interface of embedded Flash
memory
No N/A
Darwin 3.0 UW1 I2C interface of embedded Flash
memory
No N/A
RF proximity
sensor
SX9324ICST
RT
U16 SMBUS interface of embedded Flash
memory
No N/A
EC
MEC5107K
UE1 SPI interface of embedded Flash
memory
No N/A
PD
PTPS65994
AD
UPD1 I2C interface of embedded Flash
memory
No N/A
RF proximity
sensor
SX9331IULT
RT
U718 SMBUS interface of embedded Flash
memory
No N/A
CV3 ROM U1 Non Volatile memory. 128 Mbit
(16MB) for CV3 F/W flash.
No N/A
Fingerprint
Sensor
Module USB interface of embedded Flash
memory
No N/A
TouchPad Module I2C interface of embedded Flash
memory
No N/A
Camera
Sensor
Module I2C interface of embedded Flash
memory
No N/A
CAUTION: All other components on the system board lose data if power is removed from the system. Primary power
loss (unplugging the power cord and removing the battery) destroys all user data on the memory (DDR3, 1067 MHz).
Secondary power loss (removing the on-board coin-cell battery) destroys system data on the system configuration
and time-of-day information.
In addition, to clarify memory volatility and data retention in situations where the system is put in different
ACPI power states the following is provided (those ACPI power states are S0, S4, S5 and Modern Standby):
S0 state is the working state, where the dynamic RAM is maintained and is read/write by the processor.