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STM32F072V8H6 数据手册 - ST Microelectronics（意法半导体）

制造商:

ST Microelectronics（意法半导体）

分类:

微控制器

封装:

UFBGA-100

描述:

ARM Cortex-M0 48MHz 闪存：64K@x8bit RAM：16KB

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STM32F072V8H6数据手册

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STM32F072xx silicon limitations STM32F072xx

4/15 DocID025328 Rev 3

1.1 System limitations

1.1.1 Wakeup sequence from Standby mode when using more than one

wakeup source

Description

The various wakeup sources are logically OR-ed in front of the rising-edge detector which

generates the wakeup flag (WUF). The WUF needs to be cleared prior to Standby mode

entry, otherwise the MCU wakes up immediately.

If one of the configured wakeup sources is kept high during the clearing of the WUF (by

setting the CWUF bit), it may mask further wakeup events on the input of the edge detector.

As a consequence, the MCU might not be able to wake up from Standby mode.

Workaround

To avoid this problem, the following sequence should be applied before entering

Standby mode:

• Disable all used wakeup sources,

• Clear all related wakeup flags,

• Re-enable all used wakeup sources,

• Enter Standby mode

Note: Be aware that, when applying this workaround, if one of the wakeup sources is still kept

high, the MCU will enter Standby mode but then it wakes up immediately generating a

power reset.

1.1.2 Over-consumption with regulator in Low power mode

Description

Current consumption in Stop mode could be higher by approximately 15 uA for LP regulator

mode than for run mode under same conditions. This is seen mainly at temperature above

85°C and with VDD > 3.2V.

Workaround

None.

This limitation is present on Revision Z only.

1.1.3 ESD performance lower than expected

Description

Device shows lower ESD performance than the other products from STM32F0 family.

Workaround

None.

This limitation is present on Revision Z only.

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