STM6600FS22DM6E 查看數據表（PDF） - STMicroelectronics

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产品描述 (功能)

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STM6600FS22DM6E

Smart push-button on/off controller with Smart Reset™ and power-on lockout

STMicroelectronics 

Waveforms

STM6600 - STM6601

Figure 18. Long push (option with RST assertion)

Push-button pressed

and PB connected to

GND

Push-button held even

after tSRD expires

therefore RST is asserted

tON_BLANK expires

After tON_BLANK

PSHOLD state detected as high PB is monitored

therefore EN remains high for falling edge

PB

tSRD(1)

set by CSRD

tON_BLANK

(valid for STM6600 and STM6601)

SR

INT (2)

PB status

ignored

INT can go high, if PB goes high,

but system freezes and processor

won’t respond

RST

PSHOLD(3, 4)

VCC undervoltage detection status ignored

if system freezes, processor won’t

respond to any INT status change

PS ignored

HOLD

internal pull-down resistor

connected to PS input

HOLD

tDEBOUNCE

t INT_Min

tREC

tDEBOUNCE

Note: EN is high.

AM00252v2

1. tSRD period is set by external capacitor CSRD.

2. PB ignored during tINT_Min.

3. PSHOLD signal is ignored during tON_BLANK. Its level is checked after tON_BLANK expires and if it is high the EN signal

remains asserted, otherwise EN goes low.

4. Internal pull-down resistor 300 kΩ is connected to PSHOLD input during startup when device is reset.

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Doc ID 15453 Rev 7

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