STM6601 STMicroelectronics, STM6601 Datasheet - Page 26

• Manufacturer Part Number: STM6601
• Description: Smart push-button on/off controller with Smart ResetTM and power-on lockout
• Manufacturer: STMicroelectronics

Waveforms
Figure 20. Undervoltage detected for <t
1. V
2. t
Figure 21. Undervoltage detected for >t
1. After t
2. t
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V CC
VCC
PS
SRD
SRD
CC
PS
VCC
V CC
HOLD
goes above V
HOLD
INT
period is set by external capacitor C
period is set by external capacitor C
INT
EN
SRD
(1)
LO
EN
LO
(1)
expires V
t
DEBOUNCE
V CC-Min
V
t
CC
DEBOUNCE
V CC-Min
TH+
CC
undervoltage
detected
within t
is still insufficient (below V
undervoltage
detected
V
V
V
TH –
TH+
SRD
CC
thus power is not disabled after t
V
V
V CC
under-
v
detection
ignored
TH+
TH –
oltage
PB status ignored
SRD
SRD
V
under-
voltage
detection
ignored
t
.
.
CC
INT_Min
Doc ID 15453 Rev 10
TH+
SRD
SRD
) thus power is disabled (EN goes low or EN goes high).
set by C
t
PB status ignored
INT_Min
processor interrupt starts power-down sequence
t
SRD
set by C
SRD
(2)
t
SRD
V
thus power is disabled (EN goes low) and
PB is monitored for regular startup
SRD
CC
(2)
SRD
is below V
expires.
t
PB status
ignored
EN_OFF
processor sets PS
TH+
even after t
PB status
ignored
t
EN_OFF
SRD
and EN is deasserted
accordingly
STM6600 - STM6601
expires
HOLD
low
AM00254v1
AM00255v1