ADM1232 Analog Devices, ADM1232 Datasheet - Page 3

• Manufacturer Part Number: ADM1232
• Description: Microprocessor Supervisory Circuit
• Manufacturer: Analog Devices

Specifications of ADM1232

• Batt-backup-flg: No
• Manual Reset Capability: Yes
• Package: DIP,SOIC,SOP
• Power Fail Indicator: No
• Reset Threshold Summary: 4.37V & 4.62V
• Reset Output-stage: Active-High/Push-Pull,Active-Low/Open-Drain
• Min Reset Timeout (ms): 250
• Typ Watchdog Timeout (ms): 1200,150,600
• Watchdog Timer: Yes

SPECIFICATIONS
V
Table 1.
Parameter
TEMPERATURE
POWER SUPPLY
STROBE AND PB RESET INPUTS
INPUT LEAKAGE CURRENT
OUTPUT CURRENT
OUTPUT VOLTAGE
1 V OPERATION
V
CAPACITANCE
PB RESET
RESET ACTIVE TIME
STROBE
V
V
CC
CC
CC
CC
Voltage
Current
Input High Level
Input Low Level
(STROBE, TOLERANCE)
TD
RESET
RESET/RESET
RESET/RESET
RESET/RESET High Level
RESET/RESET Low Level
RESET Output Voltage
RESET Output Voltage
5%
10%
Input (STROBE, TOLERANCE)
Output (RESET, RESET)
Time
Delay
Pulse Width
Timeout Period
Fall Time
Rise Time
OUTPUT DELAY
TRIP POINT
FAIL DETECT TO RESET
= full operating range, T
A
= T
MIN
Min
−40
4.5
2.0
−0.3
−1.0
8
−8
V
2.4
4.5
4.25
20
1
250
70
62.5
250
500
10
0
250
CC
to T
− 0.5
MAX
, unless otherwise noted.
Typ
5.0
20
200
1.6
10
−12
V
V
0.1
4.62
4.37
4
610
150
600
1200
610
CC
CC
− 0.1
− 0.1
Max
+85
5.5
50
500
V
+0.8
+1.0
0.4
4.74
4.49
5
7
20
1000
250
1000
2000
50
1000
CC
Rev. C | Page 3 of 12
+ 0.3
Unit
°C
V
μA
μA
V
V
μA
μA
mA
mA
V
V
V
V
V
V
V
pF
pF
ms
ms
ms
ns
ms
ms
ms
μs
μs
μs
ms
Test Conditions/Comments
T
V
V
V
V
When sourcing less than 500 μA, RESET remains within
0.5 V of V
When sinking less than 500 μA, RESET remains within
0.5 V of GND on power-down until V
When sourcing less than 50 μA.
When sinking less than 50 μA.
TOLERANCE = GND.
TOLERANCE = V
T
T
PB RESET must be held low for a minimum of 20 ms to
guarantee a reset.
TD = 0 V.
TD = floating.
TD = V
Guaranteed by design.
Guaranteed by design.
RESET and RESET are logically correct.
After V
After V
A
A
A
IL
IL
CC
CC
, V
, V
= T
= 25°C.
= 25°C.
is at 4.5 V to 5.5 V.
is at 4.5 V to 5.5 V.
IH
IH
MIN
= CMOS levels.
= TTL levels.
CC
CC
CC
.
to T
falls below the set tolerance voltage (see Figure 9).
rises above the set tolerance voltage.
CC
on power-down until V
MAX
.
CC
.
CC
CC
drops below 2.0 V.
drops below 2.0 V.
ADM1232