STM1817T 查看數據表（PDF） - STMicroelectronics

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STM1817T

(STM1810 - STM1818) Low Power Reset Circuit

STMicroelectronics 

STM1810/1811/1812/1813/1815/1816/1817/1818

1.1

Functional block diagrams

Figure 5. Push-pull active-low output (STM1810/1812/1815/1817)

Description

1.2

1.2.1

1.2.2

VCC

VRST

COMPARE

trec

Generator

RST(1)

1. RST for STM1812 and STM1817.

Figure 6. Open drain, active-low output (STM1811/1816)

AI09651a

VCC

VRST

COMPARE

trec

Generator

5.5 kΩ(1)

RST

AI09672

1. 5.5 kΩ internal pull-up resistor.

Figure 7. Open drain, active-low output (bidirectional, manual reset detect,

STM1813/1818)

VCC

VRST

COMPARE

trec

Generator

Push-button

Detect

1. 5.5 kΩ internal pull-up resistor.

5.5 kΩ(1)

RST

AI09673

Pin descriptions

See Figure 2 and Table 2 for a brief overview of the signals connected to this device.

Active-low RST output (push-pull)

Pulses low when VCC drops below VRST, and stays low as long as VCC is below the reset

threshold. It remains low for trec after VCC rises above the reset threshold.

Active-low RST output (open drain)

Pulses low when VCC drops below VRST, and stays low as long as VCC is below the reset

threshold. It remains low for trec after VCC rises above the reset threshold. RST output has

an internal 5.5 kΩ pull-up resistor.

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