DS1833A Dallas Semiconductor, DS1833A Datasheet

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DS1833A

Manufacturer Part Number
DS1833A
Description
3.3V EconoReset
Manufacturer
Dallas Semiconductor
Datasheet
1.DS1833A.pdf (5 pages)

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
BOSTOCK HK LIMITED BOSTOCK HK LIMITED
Part Number:
DS1833A
Manufacturer:
DALLAS
Quantity:
10 000
Company:
Meier Automation Equipment Co., Limited Meier Automation Equipment Co., Limited
Part Number:
DS1833A
Manufacturer:
DALLAS
Quantity:
20 000
FEATURES
§ Automatically restarts microprocessor after
§ Monitors pushbutton for external override
§ Internal circuitry debounces pushbutton
§ Maintains reset for 350ms after V
§ Accurate 10% or 15% microprocessor 3.3V
§ Reduces need for discrete components
§ Precision temperature-compensated voltage
§ Low-cost TO-92 package or surface mount
§ Internal 5kW pull-up resistor
§ Operating temperature of -40°C to +85°C
DESCRIPTION
The DS1233A EconoReset monitors two vital conditions for a microprocessor: power supply and external
override. A precision temperature-compensated reference and comparator circuit are used to monitor the
status of the power supply (V
signal is generated which forces reset to the active state. When V
the reset signal is kept in the active state for approximately 350ms to allow the power supply and
processor to stabilize. The second function of the DS1233A is pushbutton reset control. The DS1233A
debounces a pushbutton closure and will generate a 350ms reset pulse upon release.
OPERATION — POWER MONITOR
The DS1233A provides the functions of detecting out-of-tolerance power supply conditions and warning
a processor-based system of impending power failure. When V
defined by the tolerance of the part selected, the
for approximately 350ms after the power supply has reached the selected tolerance. This allows the power
supply and microprocessor to stabilize before
www.maxim-ic.com
www.DataSheet4U.com
power failure
switch
an in-tolerance condition or pushbutton
released
power supply monitoring
reference and voltage sensor
SOT-223 package
CC
). When an out-of-tolerance condition is detected, an internal power fail
CC
returns to
RST
RST
1 of 5
is released.
signal is asserted. On power-up,
PIN ASSIGNMENT
PIN DESCRIPTION
PIN 1
PIN 2
PIN 3
PIN 4
TO-92 PACKAGE
Drawings Section
BOTTOM VIEW
on Website
See Mech.
DS1233A
DALLAS
1 2 3
1 2 3
Econo
Reset
CC
CC
GROUND
V
GROUND (SOT-223 ONLY)
RESET
returns to an in-tolerance condition,
CC
is detected as out-of-tolerance as
3.3V EconoReset
SOT-223 PACKAGE
Drawings Section
2
TOP VIEW
on Website
See Mech.
RST
1
4
DS1233A
3
is kept active
122001

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DS1833A Summary of contents

Page 1

FEATURES § Automatically restarts microprocessor after power failure § Monitors pushbutton for external override § Internal circuitry debounces pushbutton switch § Maintains reset for 350ms after V an in-tolerance condition or pushbutton released § Accurate 10% or 15% ...

Page 2

OPERATION — PUSHBUTTON RESET The DS1233A provides for a pushbutton switch to be connected to the DS1233A is not in a reset cycle, it continuously monitors the www.DataSheet4U.com is detected, the DS1233A will debounce the switch by pulling the has ...

Page 3

PUSHBUTTON RESET Figure 3 www.DataSheet4U.com POWER-UP Figure 4 POWER-DOWN Figure DS1233A ...

Page 4

ABSOLUTE MAXIMUM RATINGS* Voltage on V Pin Relative to Ground CC Voltage on I/O Relative to Ground www.DataSheet4U.com Operating Temperature Range Storage Temperature Range Soldering Temperature * This is a stress rating only and functional operation of the device at ...

Page 5

ECONORESET SELECTION GUIDE www.DataSheet4U.com DS1233-15 DS1233-10 DS1233-5 DS1233D-15 DS1233D-10 5V DS1233D-5 DS1833-15 DS1833-10 DS1833-5 DS1233A-15 3.3V DS1233A-10 V TRIP POINT CC MIN TYP MAX 4.0 4.125 4.24 4.25 4.375 4.49 4.5 4.625 4.75 4.0 4.125 4.24 4.25 4.375 4.49 4.5 ...

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