SP791 データシートの表示（PDF） - Signal Processing Technologies

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SP791

Low Power Microprocessor Supervisory with Battery Switch-Over

Signal Processing Technologies 

ELECTRICAL CHARACTERISTICS (continued)

(Vcc = 4.75V to 5.5V, VBATT = 2.8V, TA = TMIN to TMAX unless otherwise noted, typicals specified at 25oC)

PARAMETER

MIN

TYP

MAX UNITS

CONDITIONS

BATT ON Output

Low Voltage

0.1

0.4

0.7

1.5

BATT ON Output

Short Circuit Current

60

1

15

100

RESET, LOW-LINE AND WATCHDOG TIMER

RESET Threshold Voltage

4.50

4.65

4.75

RESET Threshold Hysteresis

15

LOWLINE-to-RESET

150

Threshold Voltage

VCC-to-RESET Delay

100

VCC-to-LOWLINE Delay

80

RESET Active Timeout Period 140

200

280

Watchdog Timeout Period

1.0

1.6

2.25

Minimum Watchdog

10

Timeout Period

Minimum Watchdog Input

100

Pulse Width

WDPO Pulse Width

1

WDPO-to-WDO Delay

70

RESET Output Voltage

0.004

0.3

0.1

0.4

3.5

RESET Output

Short-Circuit Current

7

20

LOWLINE Output Voltage

0.4

3.5

LOWLINE Output

Short-Circuit Current

15

100

WDO Output Voltage

0.4

3.5

WDO Output Short-Circuit

Current

3

10

WDPO Output Voltage

0.4

3.5

WDPO Output Short-Circuit

Current

7

20

V

ISINK = 3.2mA

ISINK = 25mA

mA Sink Current

µA

Source Current

V

mV

mV

µs

Power down

µs

Power down

ms Power up

sec SWT connected to VOUT

ms 4.7nF capacitor connected from

SWT to GND

ns

VIL = 0.8V, VIH = 0.75 X VCC

ms

ns

V

ISINK=50µA,VCC=1.0V,VCC Ä

ISINK = 3.2 mA, VCC = 4.25V

ISOURCE = 1.6mA, VCC = 5V

mA

V

µA

Output source current

I = 3.2mA, V = 4.25V

SINK

CC

ISOURCE = 1µA, VCC = 5V

Output source current

V

mA

ISINK = 3.2mA

ISOURCE = 500µA, VCC = 5V

Output source currrent

V

mA

ISINK = 3.2mA

ISOURCE = 1mA

Output source current

SP791DS/08

SP791 Low Power Microprocessor Supervisory with Battery Switch-Over

3

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