STM32F207IC datasheet(76/163 Pages) STMICROELECTRONICS

76 / 163 page

Electrical characteristics

STM32F205xx, STM32F207xx

76/163

Doc ID 15818 Rev 7

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 Table 25. In the application,

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).

ai17528

OSC_IN

External

STM32F

clock source

VHSEH

tf(HSE)

tW(HSE)

90%

10%

THSE

tr(HSE)

tW(HSE)

fHSE_ext

VHSEL

ai17529

OSC32_IN

External

STM32F

clock source

VLSEH

tf(LSE)

tW(LSE)

90%

10%

TLSE

tr(LSE)

tW(LSE)

fLSE_ext

VLSEL

STM32F207IC Datasheet(PDF) 76 Page - STMicroelectronics

STM32F207IC Datasheet(HTML) 76 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL