Datasheet > DS1233

DS1233

更新时间： 2024-11-22 22:54:35

品牌	Logo	应用领域
达拉斯 - DALLAS		/
页数	文件大小	规格书
5页	60K
描述
5V EconoReset

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中文翻译

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数据手册

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DS1233 数据手册

DS1233

5V EconoReset

www.dalsemi.com

FEATURES

PIN ASSIGNMENT

ꢀ Automatically restarts microprocessor after

power failure

DALLAS

DS1233

Econo

ꢀ Monitors pushbutton for external override

ꢀ Internal circuitry debounces pushbutton

switch

Reset

ꢀ Maintains reset for 350 ms after V_CCreturns

to an in-tolerance condition or pushbutton

released

ꢀ Accurate 5%, 10% or 15% microprocessor 5V

power supply monitoring

ꢀ Reduces need for discrete components

ꢀ Precision temperature-compensated voltage

reference and voltage sensor

ꢀ Low-cost TO-92 package or surface-mount

SOT-223 package

1 2 3

TO-92 PACKAGE

See Mech.

Drawings Section

SOT-223 PACKAGE

See Mech.

Drawings Section

ꢀ Internal 5kΩ=pull-up resistor

ꢀ Operating temperature of -40°C to +85°C

PIN DESCRIPTION

PIN 1

GROUND

PIN 2

PIN 3

PIN 4

RESET

V_CC

GROUND (SOT-223 ONLY)

DESCRIPTION

The DS1233 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_CC). When an out-of-tolerance condition is detected, an internal power-fail

signal is generated which forces reset to the active state. When V_CCreturns to an in-tolerance condition,

the reset signal is kept in the active state for approximately 350 ms to allow the power supply and

processor to stabilize. The second function of the DS1233 is pushbutton reset control. The DS1233

debounces a pushbutton closure and will generate a 350 ms reset pulse upon release.

OPERATION - POWER MONITOR

The DS1233 provides the functions of detecting out-of-tolerance power supply conditions and warning a

processor-based system of impending power failure. When V_CCis detected as out-of-tolerance, as

defined by the tolerance of the part selected, the RST signal is asserted. On power-up, RST is kept active

for approximately 350 ms after the power supply has reached the selected tolerance. This allows the

power supply and microprocessor to stabilize before RST is released.

1 of 5

111899

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中文翻译

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与DS1233相关器件

型号	品牌	获取价格	描述	数据表
DS1233-10	DALLAS	获取价格	5V EconoReset
DS1233-10	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, +4.38VV, CMOS, PBCY3, TO-92, 3 PIN
DS1233-10/T&R/C01	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PBCY3, TO-92, 3 PIN
DS1233-10+T&R	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, +4.38VV, CMOS, PBCY3, ROHS COMPLIANT, TO-9
DS1233-10N	ETC	获取价格	Voltage Detector
DS1233-15	DALLAS	获取价格	5V EconoReset
DS1233-15	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, +4.13VV, CMOS, PBCY3, TO-92, 3 PIN
DS1233-15/T&R	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, +4.13VV, CMOS, PBCY3, TO-92, 3 PIN
DS1233-15/T&R/STR	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PBCY3, TO-92, 3 PIN
DS1233-15+T&R	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, +4.13VV, CMOS, PBCY3, ROHS COMPLIANT, TO-9

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