NetduinoPlus2 Netduino, NetduinoPlus2 Datasheet - Page 25

• Manufacturer Part Number: NetduinoPlus2
• Description: Development Boards & Kits - ARM NETDUINO PLUS 2
• Manufacturer: Netduino

Specifications of NetduinoPlus2

• Rohs: yes
• Product: Development Boards
• Tool Is For Evaluation Of: STM32F405RG
• Core: ARM Cortex M4
• Interface Type: I2C, SPI, UART, USB
• Operating Supply Voltage: 7.5 v to 9 V
• Data Bus Width: 32 bit
• Description/function: Arduino form factor
• Dimensions: 2.8 in x 2.1 in
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C

STM32F405xx, STM32F407xx
Figure 7.
Regulator OFF
This mode allows to power the device as soon as V
●
●
Regulator OFF/internal reset ON
This mode is available only on UFBGA and WLCSP90 packages. It is activated by
setting BYPASS_REG and PDR_ON pins to V
The regulator OFF/internal reset ON mode allows to supply externally a 1.2 V voltage
source through V
The following conditions must be respected:
–
–
–
In regulator OFF/internal reset ON mode, PA0 cannot be used as a GPIO pin since it
allows to reset the part of the 1.2 V logic which is not reset by the NRST pin, when the
internal voltage regulator in off.
Regulator OFF/internal reset OFF
This mode is available only on UFBGA and WLCSP packages. It is activated by setting
BYPASS_REG pin to V
V
between power domains.
If the time for V
reach 1.8 V, then PA0 should be connected to the NRST pin (see
Otherwise, PA0 should be asserted low externally during POR until V
1.8 V (see
If V
must be asserted on PA0 pin.
DD
Regulator ON/internal reset OFF
CAP_1
should always be higher than V
and V
Figure
CAP_1
CAP_1
CAP_2
9).
and V
DD
Doc ID 022152 Rev 3
and V
and by applying an inverted reset signal to PDR_ON, and
go below 1.08 V and V
CAP_2
CAP_2
pins, in addition to V
to reach 1.08 V is faster than the time for V
CAP_1
DD
DD
and V
.
DD
reaches 1.8 V.
is higher than 1.7 V, then a reset
CAP_2
DD
.
to avoid current injection
Figure
DD
Description
reaches
8).
25/180
DD
to