ADM823(RevC) 데이터 시트보기 (PDF) - Analog Devices

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ADM823
(Rev.:RevC)

Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SC70 and SOT-23

Analog Devices 

ADM823/ADM824/ADM825

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

RESET 1

5 VCC

ADM823

GND 2 TOP VIEW

(Not to Scale)

MR 3

4 WDI

Figure 2. ADM823 Pin Configuration

RESET 1

5 VCC

ADM824

GND 2 TOP VIEW

(Not to Scale)

RESET 3

4 WDI

Figure 3. ADM824 Pin Configuration

RESET 1

5 VCC

ADM825

GND 2 TOP VIEW

(Not to Scale)

RESET 3

4 MR

Figure 4. ADM825 Pin Configuration

Table 4. Pin Function Descriptions

Pin No. Mnemonic

1

RESET

2

GND

3

MR (ADM823)

RESET (ADM824/ADM825)

4

WDI (ADM823/ADM824)

MR (ADM825)

5

VCC

Description

Active Low, Push-Pull Reset Output. Asserted whenever VCC is below the reset threshold, VTH.

Ground.

Manual Reset Input. This is an active low input which, when forced low for at least 1 μs, generates

a reset. It features a 52 kΩ internal pull-up.

Active High, Push-Pull Reset Output.

Watchdog Input. Generates a reset if the voltage on the pin remains low or high for the duration

of the watchdog timeout. The timer is cleared if a logic transition occurs on this pin or if a reset is

generated.

Manual Reset Input. This is an active low input which, when forced low for at least 1 μs, generates

a reset. It features a 52 kΩ internal pull-up.

Power Supply Voltage Being Monitored.

Rev. C | Page 6 of 12

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