Datasheet

Electrical characteristics STM32F412xE/G
76/193 DocID028087 Rev 4
6.3 Operating conditions
6.3.1 General operating conditions
Table 15. General operating conditions
Symbol Parameter Conditions Min Typ Max Unit
f
HCLK
Internal AHB clock frequency
Power Scale3: Regulator ON,
VOS[1:0] bits in PWR_CR register = 0x01
0-64
MHz
Power Scale2: Regulator ON,
VOS[1:0] bits in PWR_CR register = 0x10
0 - 84
Power Scale1: Regulator ON,
VOS[1:0] bits in PWR_CR register = 0x11
0-100
f
PCLK1
Internal APB1 clock
frequency
-0 -50MHz
f
PCLK2
Internal APB2 clock
frequency
-0 -100MHz
V
DD
Standard operating voltage - 1.7
(1)
-3.6V
V
DDA
(2)(3)
Analog operating voltage
(ADC limited to 1.2 M
samples)
Must be the same potential as V
DD
(4)
1.7
(1)
-2.4
V
Analog operating voltage
(ADC limited to 2.4 M
samples)
2.4 - 3.6
V
DDUSB
USB supply voltage
(supply voltage for PA11 and
PA12 pins)
USB not used 1.7 3.3 3.6
V
USB used
(5)
3.0 - 3.6
V
BAT
Backup operating voltage - 1.65 - 3.6 V
V
12
Regulator ON: 1.2 V
internal voltage on
VCAP_1/VCAP_2 pins
VOS[1:0] bits in PWR_CR register = 0x01
Max frequency 64 MHz
1.08
(6)
1.14 1.20
(6)
V
VOS[1:0] bits in PWR_CR register = 0x10
Max frequency 84 MHz
1.20
(6)
1.26 1.32
(6)
VOS[1:0] bits in PWR_CR register = 0x11
Max frequency 100 MHz
1.26 1.32 1.38
V
12
Regulator OFF: 1.2 V
external voltage must be
supplied on
VCAP_1/VCAP_2 pins
Max frequency 64 MHz 1.10 1.14 1.20
VMax frequency 84 MHz 1.20 1.26 1.32
Max frequency 100 MHz 1.26 1.32 1.38
V
IN
Input voltage on RST, FT and
TC pins
(7)
2 V ≤ V
DD
≤ 3.6 V –0.3 - 5.5
VV
DD
≤ 2 V –0.3 - 5.2
Input voltage on BOOT0 pin - 0 - 9
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