Product Summary

The DS1232LP Low Power 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 VCC. When an out–of–tolerance condition occurs, an internal power fail signal is generated which forces reset to the active state. When VCC returns to an in-tolerance 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. The second function of the DS1232LP performs is pushbutton reset control. The DS1232LP debounces the pushbutton input and guarantees an active reset pulse width of 250 ms minimum. The third function is a watchdog timer. The DS1232LP has an internal timer that forces the reset signals to the active state if the strobe input is not driven low prior to time–out. The watchdog timer function can be set to operate on timeout settings of approximately 150 ms, 600 ms, and 1.2 seconds.

Parametrics

DS1232LP absolute maixmum ratings: (1)Voltage on VCC Pin Relative to Ground: –0.5V to +7.0V; (2)Voltage on I/O Relative to Ground: –0.5V to VCC + 0.5V; (3)Operating Temperature: 0℃ to 70℃; (4)Operating Temperature (Industrial Version): –40℃ to +85℃; (5)Storage Temperature: –55℃ to +125℃; (6)Soldering Temperature: 260℃ for 10 seconds.

Features

DS1232LP features: (1)Super low-power version of DS1232; (2)50 μA quiescent current; (3)Halts and restarts an out of control microprocessor; (4)Automatically restarts microprocessor after power; (5)failure; (6)Monitors pushbutton for external override; (7)Accurate 5% or 10% microprocessor power supply; (8)monitoring; (9)8 pin DIP, 8 pin SOIC or space saving μ SOP package; (10)available; (11)Optional 16 pin SOIC package available; (12)Industrial temperature -40℃ to +85℃ available, designated N.

Diagrams

DS1232LP MICROMONITOR BLOCK DIAGRAM

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
DS1232LP
DS1232LP
Maxim Integrated Products
Supervisory Circuits Low Power MicroMonitor Chip
Data Sheet
0-36440: $0.77
DS1232LP+
DS1232LP+
Maxim Integrated Products
Supervisory Circuits Low Power MicroMonitor Chip
Data Sheet
0-1: $1.53
1-25: $1.02
25-50: $0.72
50-250: $0.71
DS1232LPN+
DS1232LPN+
Maxim Integrated Products
Supervisory Circuits Low Power MicroMonitor Chip
Data Sheet
0-1: $1.76
1-25: $1.18
25-50: $0.85
DS1232LPN
DS1232LPN
Maxim Integrated Products
Supervisory Circuits Low Power MicroMonitor Chip
Data Sheet
0-36250: $0.89
DS1232LPS
DS1232LPS
Maxim Integrated Products
Supervisory Circuits Low Power MicroMonitor Chip
Data Sheet
0-36080: $0.95
DS1232LPS/T&R
DS1232LPS/T&R
Maxim Integrated Products
Supervisory Circuits Low Power MicroMonitor Chip
Data Sheet
0-1000: $0.89
1000-39600: $0.89
DS1232LPS+
DS1232LPS+
Maxim Integrated Products
Supervisory Circuits Low Power MicroMonitor Chip
Data Sheet
0-1: $1.87
1-25: $1.25
25-50: $0.89
50-250: $0.87
DS1232LPS-2+
DS1232LPS-2+
Maxim Integrated Products
Supervisory Circuits Low Power MicroMonitor Chip
Data Sheet
0-1: $1.52
1-25: $1.02
25-50: $0.74
50-100: $0.73