Maxim > Products > Supervisors, Voltage Monitors, Sequencers > DS1232LP

DS1232LP

Low-Power MicroMonitor Chip

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The DS1232LP/LPS 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 V_CC. When an out-of-tolerance condition occurs, an internal power-fail signal is generated, which forces reset to the active state. When V_CC returns to an in-tolerance condition, the reset signals are kept in the active state for a minimum of 250ms to allow the power supply and processor to stabilize.

Data Sheet

Download	Rev 1	(PDF, 112kB)
E-Mail

Key Features

Super-low power version of DS1232
50µA 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 SO, or space saving µSOP package available
Optional 16-pin SO package available
Industrial temperature -40°C to +85°C available, designated N

Key Specifications:

Supervisors (1 Monitored Voltage)

Part Number

Reset Thresh.
(V)

Reset Out

t_RESET

Watchdog Feature

Watchdog Timeout

Supervisor Features

Reset Thresh. Accur.
(%)

I_CC
(µA)

Budgetary Price

min

@ +25°C

max

See Notes

DS1232LP

3.3 to 5.5

Active High

Active Low

Open Drain

Push-Pull

85ms to 300ms

Input (WDI)

1s to 2s

<1s

Manual Reset

2.5

$1.09 @1k

See All Supervisors (1 Monitored Voltage) (274)

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Block Diagram

Product Guides

Microprocessor Supervisory (PDF)

Reliability Reports

Reliability Report:

DS1232LP.pdf

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Notes	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1232LP				Active	DS1232LP+	PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8-1*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
DS1232LP+				Active		PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8+1*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1232LPN				Active	DS1232LPN+	PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1232LPN+				Active		PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1232LPS				Active	DS1232LPS+	SOIC(W);16 pin;111.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0107 (PDF) Use pkgcode/variation: W16-1*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
DS1232LPS+				Active		SOIC(W);16 pin;111.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0107 (PDF) Use pkgcode/variation: W16+1*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1232LPS+T&R	T&R Qty 1000/Reel			Active		SOIC(W);16 pin;111.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0107 (PDF) Use pkgcode/variation: W16+1*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1232LPS-2				Active	DS1232LPS-2+	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
DS1232LPS-2+	Lead-Free			Active		SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1232LPS-2+T&R	T&R Qty 2500/Reel			Active		SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Notes	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1232LPS-2/T&R	T&R Qty 2500/Reel			Active	DS1232LPS-2+T&R	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
DS1232LPS-2/T&R/C01				Active	DS1232LPS-2/TR+C01	SOIC; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS1232LPS-2/TR+C01				Active		SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1232LPS/T&R	T&R Qty 1000/Reel			Active	DS1232LPS+T&R	SOIC(W);16 pin;111.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0107 (PDF) Use pkgcode/variation: W16-1*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
DS1232LPSN				Active	DS1232LPSN+	SOIC(W);16 pin;111.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0107 (PDF) Use pkgcode/variation: W16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1232LPSN+				Active		SOIC(W);16 pin;111.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0107 (PDF) Use pkgcode/variation: W16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1232LPSN+T&R				Active		SOIC(W);16 pin;111.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0107 (PDF) Use pkgcode/variation: W16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1232LPSN-2				Active	DS1232LPSN-2+	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1232LPSN-2+				Active		SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1232LPSN-2+T&R	T&R Qty 2500/Reel			Active		SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Notes	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1232LPSN-2/T&R	T&R Qty 2500/Reel			Active	DS1232LPSN-2+T&R	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1232LPSN/T&R	T&R Qty 1000/Reel			Active	DS1232LPSN+T&R	SOIC(W);16 pin;111.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0107 (PDF) Use pkgcode/variation: W16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1232LPU				Active	DS1232LPU+	µMAX;8 pin;16.2 mm² Outline Drawing:21-0036 (PDF) Land Pattern: 90-0092 (PDF) Use pkgcode/variation: U8-1*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
DS1232LPU+				Active		µMAX;8 pin;16.2 mm² Outline Drawing:21-0036 (PDF) Land Pattern: 90-0092 (PDF) Use pkgcode/variation: U8+1*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1232LPU+T&R	T&R Qty 3000/Reel			Active		µMAX;8 pin;16.2 mm² Outline Drawing:21-0036 (PDF) Land Pattern: 90-0092 (PDF) Use pkgcode/variation: U8+1*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1232LPU/T&R	T&R Qty 3000/Reel			Active	DS1232LPU+T&R	µMAX;8 pin;16.2 mm² Outline Drawing:21-0036 (PDF) Land Pattern: 90-0092 (PDF) Use pkgcode/variation: U8-1*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Similar Products by Function

See All Supervisors (1 Monitored Voltage) (274 Products)

Products with Similar Part Numbers

DS1232

MicroMonitor Chip

Didn't Find What You Need?

Next Day Product Selection Assistance from Applications Engineers
Parametric Search
Applications Help

Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Rev 1; 1999-11-18
This page last modified: 2009-10-26