ASM1832 datasheet(3/9 Pages) ONSEMI

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ASM1832

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Table 3. DC ELECTRICAL CHARACTERISTICS (Unless otherwise noted, VCC = 1.2 V to 5.5 V and specifications are over the

operating temperature range of −40°C to +85°C. All voltages are referenced to ground.)

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Supply Voltage

VCC

1.0

5.5

ST and PBRST Input High Level

VIH

VCC ≥ 2.7 V

VCC+0.3

ST and PBRST Input High Level

VIH

VCC < 2.7 V

VCC−0.4V

ST and PBRST Input Low Level

VIL

−0.3

0.5

VCC Trip Point (TOL = GND)

VCCTP

2.80

2.88

2.97

VCC Trip Point (TOL = VCC)

VCCTP

2.47

2.55

2.64

Watchdog Timeout Period

tTD

TD = GND

62.5

150

250

Watchdog Timeout Period

tTD

TD = VCC

500

1200

2000

Watchdog Timeout Period

tTD

TD Floating

250

610

1000

Output Voltage

VOH

I = −500 mA, VCC < 2.7 V

(Note 2)

VCC−0.3V

VCC−0.1V

Output Current

IOH

Output = 2.4 V, VCC ≥ 2.7 V

350

Output Current

IOL

Output = 0.4 V, VCC ≥ 2.7 V

Input Leakage

IIL

−1.0

1.0

RESET Low Level

VOL

(Note 2)

0.4

Internal Pull−up Resistor

PBRST pin

Operating Current

ICC1

Outputs open, VCC ≤ 3.6 V

and all inputs at VCC or GND

Input Capacitance

CIN

Output Capacitance

COUT

PBRST Manual Reset

Minimum Low Time

tPB

PBRST = VIL

Reset Active Time

tRST

250

610

1000

ST Pulse Width

tST

Must not exceed tRD

minimum. Watchdog cannot

be disabled.

VCC Fail Detect to RESET or

RESET

tRPD

Pulses < 2 ms at VCCTP

minimum will not cause reset

VCC Slew Rate

PBRST Stable LOW to

RESET and RESET Active

tPDLY

VCC Detect to RESET or

RESET inactive

tRPU

trise = 5 ms

250

610

1000

VCC Slew Rate

2. RESET remains within 0.5 V of VCC on power−down until VCC falls below 2 V. RESET remains within 0.5 V of ground on power−down until

VCC falls below 2.0 V.

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