Power Control Unit (Pwrcu); Introduction; Figure 11. Pwrcu Block Diagram - Holtek HT32F52220 User Manual

32-Bit Arm ® Cortex ® -M0+ MCU
HT32F52220/HT32F52230
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, Deep-Sleep2, and Power-Down 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.
V
DD
nRST
WAKEUP
LSI
LDO: Voltage Regulator
DMOS: Depletion MOS

Figure 11. PWRCU Block Diagram

Rev. 1.10
WKUP1
PWR_CTRL
WKUP2
HSE
LVD: Low Voltage Detector
POR/PDR: Power On Reset/Power Down Reset
57 of 366
V Domain
DD
LDOOFF
LDO
LCM
DMOSON
DMOS
WKUP4
V 1.5 V Domain
DD15
SLEEPDEEP
CPU Memories
SLEEPING
APB
INTF Peripheral
HSI
3.3 V
POR/PDR
LVD
1.5 V
POR/PDR
V
V
LDOOUT
DD15
PLL
Digital
November 09, 2018