NetduinoPlus2 Netduino, NetduinoPlus2 Datasheet - Page 91

• 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 28. High-speed external clock source AC timing diagram
Figure 29. Low-speed external clock source AC timing diagram
High-speed external clock generated from a crystal/ceramic resonator
The high-speed external (HSE) clock can be supplied with a 4 to 26 MHz crystal/ceramic
resonator oscillator. All the information given in this paragraph are based on characterization
results obtained with typical external components specified in
the resonator and the load capacitors have to be placed as close as possible to the oscillator
pins in order to minimize output distortion and startup stabilization time. Refer to the crystal
resonator manufacturer for more details on the resonator characteristics (frequency,
package, accuracy).
V LSEH
V LSEL
V HSEH
V HSEL
90%
10%
90%
10%
External
clock source
External
clock source
t r(HSE)
t r(LSE)
f HSE_ext
f LSE_ext
Doc ID 022152 Rev 3
T HSE
T LSE
OSC _IN
t f(HSE)
OSC32_IN
t f(LSE)
t W(HSE)
t W(LSE)
I L
I L
Table
STM32F
Electrical characteristics
STM32F
30. In the application,
t W(HSE)
t W(LSE)
ai17528
ai17529
91/180
t
t