Power Control Unit (Pwrcu); Introduction; Figure 11. Pwrcu Block Diagram - Holtek HT32F50231 User Manual

32-Bit Arm ® Cortex ® -M0+ MCU
HT32F50231/HT32F50241
5

Power Control Unit (PWRCU)

Introduction

The power consumption can be regarded as one of the most important issues for many embedded
system applications. Accordingly the Power Control Unit, PWRCU, provides many types of power
saving modes such as Sleep, Deep-Sleep1 and Deep-Sleep2 modes. These modes reduce the
power consumption and allow the application to achieve the best trade-off between the conflicting
demands of CPU operating time, speed and power consumption. The dash line in the Figure 11
indicates the power supply source of two digital power domains.
VDD
WKUP1
nRST
WKUP2
WAKEUP0
WKUP3
WAKEUP1
RTCOUT
RTCOUT
LSI
LSE HSE
LDO: Voltage Regulator
DMOS: Depletion MOS

Figure 11. PWRCU Block Diagram

Rev. 1.00
LDOOFF
LCM
DMOSON
LDO
Controller
WKUP5
SLEEPDEEP
SLEEPING
PWR_CTRL
WKUP4
LVD: Low Voltage Detector
POR/PDR: Power On Reset/Power Down Reset
60 of 486
V Domain
DD
LDO
V
DD
POR/PDR
DMOS
LVD
1.5 V
POR/PDR
V
DD15
V 1.5 V Domain
DD15
CPU Memories HSI
Digital
RTC
Peripheral
V
LDOOUT
July 31, 2018