Product Info

10
allowed chip power mode configuration.
An application note will be provided to show how to configure the module and the R&S CMW500 to test
the different power modes.
LS Power Mode
Only one of the following pins can be used to wake up the device
 RTC Expiration
 PMU_POWER_BUTTON
 PMU_WAKEUP
 PMU_SHUTDOWN
 AntiTamper
Other digital interface pins can also be configured to wake up the system (up to 10 GPIO’s can be used).
Serial interface pins are not active in this mode
DS Power Mode
This mode is the same as LS, but requires lower power consumption due to the unused reference clock.
The average current draw in this mode of operation is 2.5mA.
DH0 Power Mode
The following occurs in the DH0 power mode:
 All digital logic is powered down
 Memories are not retained
 IO’s are not stored
 The RTC is on
 One of the following dedicated pins is used to wake from this mode:
o RTC Expiration
o PMU_POWER_BUTTON
o PMU_WAKEUP
o PMU_SHUTDOWN
o AntiTamper
The average current draw in this mode of operation is 1.4uA.
DH1 Power Mode
This mode is similar to DH0, however it enables memory retention to store the system sate. A Wakeup
event will only initiate a boot flow in a case of state full configuration
The average current draw in this mode of operation is 45uA.
DH2 Power Mode
This mode is similar to DH1, however it also enables output IOs to latch and wakeup from digital inputs
(up to 10 GPIO’s can be used)
The current draw is similar to DH1, but will depend on the extra current draw of the GPIOs.
PSM Current Draw
Most of the power consumption during PSM is from the non-hibernation period. The data for this period of
time will be expressed in mA*sec. Non-hibernation energy is around 308mA*s with a hibernation current
of around 1.4uA. If the device would sleep for one hour (3600 seconds), the average current
consumption would be 360mA*sec/3600 sec = 100uA, You would need added in the hibernation current
(1.4uA), for a total of 101.4uA.