Low Power Consumption; Overview - Renesas RX100 Series User Manual

RX13T Group
11.

Low Power Consumption

11.1

Overview

This MCU has several functions for reducing power consumption, by setting clock dividers, stopping modules, changing
to low power consumption mode in normal operation, and changing to operating power control mode.
Table 11.1 lists the specifications of low power consumption functions, and Table 11.2 lists the conditions to change to
low power consumption modes, states of the CPU and peripheral modules, and the method for exiting each mode.
After a reset, this MCU returns to normal mode, but modules except the DTC, and RAM are stopped.
Table 11.1 Specifications of Low Power Consumption Functions
Item
Clock divider functions
Module stop function
Function for transition to low
power consumption mode
Low power consumption modes
Operating power control modes
Note 1. For details, refer to section 9, Clock Generation Circuit.
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
Specification
The frequency division ratio can be set independently for the system clock (ICLK), peripheral
module clock (PCLKB), S12AD clock (PCLKD), and FlashIF clock (FCLK).*
Each peripheral module can be stopped independently by the module stop control register.
Transition to a low power consumption mode in which the CPU, peripheral modules, or oscillators
are stopped is enabled.
 Sleep mode
 Deep sleep mode
 Software standby mode
 Power consumption can be reduced in normal operation, sleep mode, and deep sleep mode by
selecting an appropriate operating power control mode according to the operating frequency and
operating voltage.
 Two operating power control modes are available
High-speed operating mode
Middle-speed operating mode
11. Low Power Consumption
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