DS1232LPS-2+ Dallas Semiconductor, DS1232LPS-2+ Datasheet - Page 5

• Manufacturer Part Number: DS1232LPS-2+
• Description: uP Supervisor, 4.75 or 4.5 V Monitor, Watchdog Timer, 8-Pin SOIC
• Manufacturer: Dallas Semiconductor
• Type: Monitor Chipr

Specifications of DS1232LPS-2+

• Current, Output: -10 mA (High), +10 mA (Low)
• Current, Supply: 50 μA (CMOS), 500 μA (TTL)
• Package Type: SOIC
• Temperature, Operating, Range: 0 to +70 °C
• Time, Fall: 300 μs
• Voltage, Input: 5.3 V (High), 0.8 V (Low)
• Voltage, Output, High: 4.9 V
• Voltage, Output, Low: 0.4 V
• Voltage, Supply: 5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

FEATURES
DESCRIPTION
The DS1232LP/LPS Low Power MicroMonitor Chip monitors three vital conditions for a
microprocessor: power supply, software execution, and external over-ride. First, a precision temperature-
compensated reference and comparator circuit monitors the status of V
condition occurs, an internal power-fail signal is generated which forces reset to the active state. When
V
250 ms to allow the power supply and processor to stabilize.
CC
Super-low power version of DS1232
50 A quiescent current
Halts and restarts an out-of-control
microprocessor
Automatically restarts microprocessor after
power failure
Monitors pushbutton for external override
Accurate 5% or 10% microprocessor power
supply monitoring
8-pin DIP, 8-pin SOIC or space saving -SOP
package available
Optional 16-pin SOIC package available
Industrial temperature -40°C to +85°C
available, designated N
returns to an in-tolerance condition, the reset signals are kept in the active state for a minimum of
1 of 7
Low Power MicroMonitor Chip
PIN ASSIGNMENT
PIN DESCRIPTION
TD
TOL
GND
RST
V
PBRST
ST
PBRST
RST
PBRST
CC
DS1232LP 8-Pin DIP (300-mil)
GND
DS1232LP (118-mil -SOP)
TOL
See Mech. Drawings Section
See Mech. Drawings Section
GND
TD
TOL
TD
1
2
3
4
1
2
3
4
8
7
6
5
8
7
6
5
- Pushbutton Reset Input
- Time Delay Set
- Selects 5% or 10% V
- Ground
- Reset Output (Active High)
- Reset Output (Active Low, open
- Strobe Input
- +5 Volt Power
drain)
V
ST
RST
RST
CC
CC
V
ST
RST
RST
CC
. When an out-of-tolerance
DS1232LP/LPS
PBRST
DS1232LPS 16-Pin SOIC (300-mil)
PBRST
DS1232LPS-2 8-Pin SOIC (150-mil)
GND
TOL
GND
NC
NC
NC
NC
TD
TOL
See Mech. Drawings Section
See Mech. Drawings Section
TD
1
2
3
4
5
6
7
8
1
2
3
4
CC
16
15
14
13
12
11
10
8
7
6
5
9
Detect
111899
VCC
ST
RST
RST
NC
VCC
NC
ST
NC
RST
NC
RST