PT7M6709 Datasheet, PDF (2/12 Pages) Pericom Semiconductor Corporation – Multi-voltage Supervisor

PT7M6709/6714
Multi-voltage Supervisor
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Pin Description
Table 3 Pin description of PT7M6709
Pin
Name Type
Description
1
IN1
I
Input voltage 1
2
IN2
I
Input voltage 2
3
IN3
I
Input voltage 3
4
IN4
I
Input voltage 4
5
GND
P Ground
6
PWRGD4
O
Output 4. PWRGD4 asserts low when IN4 falls below its threshold voltage.
PWRGD4 is open drain with a 10μA internal pull-up current source to Vcc.
7
PWRGD3
O
Output 3. PWRGD3 asserts low when IN3 falls below its threshold voltage.
PWRGD3 is open drain with a 10μA internal pull-up current source to Vcc.
8
PWRGD2
O
Output 2. PWRGD2 asserts low when IN2 falls below its threshold voltage.
PWRGD2 is open drain with a 10μA internal pull-up current source to Vcc.
9
PWRGD1
O
Output 1. PWRGD1 asserts low when IN1 falls below its threshold voltage.
PWRGD1 is open drain with a 10μA internal pull-up current source to Vcc.
Supply Voltage. An undervoltage lockout circuit forces all PWRGD_outputs
10
VCC
P low when Vcc drops below the minimum operating voltage. Vcc is not a
monitored voltage.
Table 4 Pin description of PT7M6714
Pin Name Type
Description
1
MR
I ^{Manual Reset Input. Force MR low to assert the RESET output. RESET remains asserted}
for the reset timeout period after MR goes high. MR is internally pulled up to Vcc
Power-Fail Input 1. Input to noninverting input of the power-fail comparator. PFI1 is compared to
2
PFI1 I an internal 0.62V reference. Use an external resistor-divider network to adjust the monitor
threshold.
Power-Fail Input 2. Input to noninverting input of the power-fail comparator. PFI2 is compared to
3
PFI2 I an internal 0.62V reference. Use an external resistor-divider network to adjust the monitor
threshold.
Power-Fail Input 3. Input to noninverting input of the power-fail comparator. PFI3 is compared to
4
PFI3 I an internal 0.62V reference. Use an external resistor-divider network to adjust the monitor
threshold.
5
GND P Ground
6
PFO3 _O Power-Fail output 3. PFO3 asserts low when PFI3 is below the selected threshold. PFO3 is an
active-low, open drain output with a 10μA internal pull-up to Vcc.
7
PFO2
O
Power-Fail output 2. PFO2 asserts low when PFI2 is below the selected threshold. PFO2 is an
active-low, open drain output with a 10μA internal pull-up to Vcc.
8
PFO1
O
Power-Fail output 1. PFO1 asserts low when PFI1 is below the selected threshold. PFO1 is an
active-low, open drain output with a 10μA internal pull-up to Vcc.
9
RESET
O
Reset output. RESET is an active-low, open-drain output that asserts low when Vcc drops
below its preset threshold voltage or when a manual reset is initiated. RESET remains
low for the reset timeout period after Vcc exceeds the selected reset threshold or MR is released.
10
VCC P _{Supply Voltage. RESET asserts low when Vcc drops below its threshold.}
12-07-0002
PT0235-2
07/05/12
2