DS1232+ Dallas Semiconductor, DS1232+ Datasheet - Page 4

• Manufacturer Part Number: DS1232+
• Description: uP Supervisor, 4.75 or 4.5 V Monitor, Watchdog Timer, DIP8
• Manufacturer: Dallas Semiconductor
• Type: Monitor Chipr

Specifications of DS1232+

• Current, Output: -10 mA (High), +10 mA (Low)
• Current, Supply: 0.5 mA
• Package Type: PDIP
• Temperature, Operating, Range: 0 to +70 °C
• Time, Fall: 300 μs
• Voltage, Input: 5.8 V (High), 0.8 V (Low)
• Voltage, Output, High: 5.4 V
• Voltage, Output, Low: 0.4 V
• Voltage, Supply: 5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

FEATURES
DESCRIPTION
The DS1232 MicroMonitor™ Chip monitors three vital conditions for a microprocessor: power supply,
software execution, and external override. First, a precision temperature-compensated reference and
comparator circuit monitors the status of V
power fail signal is generated which forces reset to the active state. When V
condition, the reset signals are kept in the active state for a minimum of 250 ms to allow the power supply
and processor to stabilize.
MicroMonitor is a trademark of Dallas Semiconductor.
Halts and restarts an out-of-control
microprocessor
Holds microprocessor in check during power
transients
Automatically restarts microprocessor after
power failure
Monitors pushbutton for external override
Accurate 5% or 10% microprocessor power
supply monitoring
Eliminates the need for discrete components
Space-saving, 8-pin mini-DIP
Optional 16-pin SOIC surface mount package
Industrial temperature -40°C to +85°C
available, designated N
CC
. When an out-of-tolerance condition occurs, an internal
1 of 7
PIN ASSIGNMENT
PIN DESCRIPTION
TD
TOL
GND
RST
V
NC
ST
PBRST
RST
CC
DS1232S 16-Pin SOIC (300-mil)
PBRST
PBRST
DS1232 8-Pin DIP (300-mil)
See Mech. Drawings Section
See Mech. Drawings Section
GND
TOL
GND
TOL
NC
NC
NC
NC
TD
- Pushbutton Reset Input
- Time Delay Set
- Selects 5% or 10% V
- Ground
- Strobe Input
- +5 Volt Power
- No Connections
TD
- Reset Output (Active High)
- Reset Output (Active Low, open
MicroMonitor Chip
drain)
1
2
3
4
1
2
3
4
5
6
7
8
CC
returns to an in-tolerance
16
15
14
13
12
11
10
8
7
6
5
9
VCC
ST
RST
RST
NC
VCC
NC
ST
NC
RST
NC
RST
DS1232
CC
Detect