Hi, we are using the low consumption mode in the S128 micro and we have detected that over time the consumption rises.
We found an application note for the S124 micro.
I wanted to know if it also affects our Micro S128. How can we access and modify these register? Is there an API? or assembler.
Thank you
"This document provides a note on the supply current in Low speed mode or Software Standby mode for the
Renesas Synergy™ S1 Series S124.
1. Note
A circuit that is not used in user mode might not be reset and might operate in an unstable state because the
clocks are not supplied during an MCU reset. Therefore, the supply current can be increased to a value
greater than that stated in the User’s Manual by up to 600 μA when the MCU transition to Low speed mode or
Software Standby mode.
2. Measure
Perform the following procedure at the initial setting for the MCU to initialize the unused circuit mentioned
above.
Turn the power on
Release the protection of the Protect Register
PRCR.PRC1 = 1
Release from the module-stop state
MSTPCRC.MSTPC28 = 0
Wait for 3 PCLKB cycles
for example: dummy = PORT1.PODR.BYTE;
while (dummy != PORT1.PODR.BYTE) { }
Transition to the module-stop state
MSTPCRC.MSTPC28 = 1
Set the Protect Register
PRCR.PRC1 = 0
End