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AT32F413
Series Reference Manual
2022.06.27
Page 40
Rev 2.00
Note: 1.When USBBUFS = 0, USBFS buffer size is 512 bytes, its address is 0x 4000 6000 ~
0x400063FF. When USBBUFS = 1, USBFS buffer size is 768 ~ 1280 bytes, its address is
0x4000 7800 ~ 0x4000 83FF. If both CAN1 and CAN2 are not enabled, the maximum USB FS
buffer can be set to 1280 bytes; If any one of them is enabled, the maximum USBFS buffer can
be up to 1024 bytes; If both are enabled, the maximum USB buffer can be set to 768 bytes.
3
Power control (PWC)
3.1 Introduction
For AT32F413 series, its operating voltage supply is 2.6 V ~ 3.6 V, with a temperature range of -
40~+105
℃
. To reduce power consumption, the device provides three types of power saving modes,
including Sleep, Deepsleep and Standby modes so as to achieve the best tradeoff among the conflicting
demands of CPU operating time, speed and power consumption.The AT32F413 series have three power
domains
─
VDD/VDDA domain, 1.2 V domain and battery powered domain. The VDD/VDDA domain is
supplied directly by external power, the 1.2 V domain is powered by the embedded LDO in the
VDD/VDDA domain, and the battery powered domain is supplied through a
V
BAT
pin.
Figure 3-1 Block diagram of each power supply
Wake Up Logic
I/O Ring
(V
SSA
) V
REF-
(From 2.4 V up to V
DDA
) V
REF+
(V
DD
) V
DDA
(V
SS
) V
SSA
V
SS
V
DD
V
BAT
LDO
POR
VDD Power Domain
1.2v Power Domain
Battery Power Domain
VDDA Power Domain
CPU
WDT
LICK
Memory
Digital
Peripherals
PLL
HICK
PVM
sleeping
deepsleep
LEXT
RTC
POR_BPD
BPR
Registers
CRM BPDC
Register
ADC
Temp Sensor
3.2 Main Features
Three power domains: VDD/VDDA domain, 1.2 V domain and battery powered domain
Three types of power saving modes: Sleep mode, Deepsleep mode, and Standby mode
Internal voltage regulator supplies 1.2 V voltage source for the core domain
Power voltage detector is provided to generate an interrupt when the supply voltage is lower or
higher than a programmed threshold
The battery powered domain is powered by V
BAT
when VDD is powered off
VDD/VDDA applies independent digital and analog module to reduce noise on external power