DS1239

更新时间： 2024-11-13 22:54:35

品牌	Logo	应用领域
达拉斯 - DALLAS		光电二极管
页数	文件大小	规格书
4页	59K
描述
MicroManager Chip

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中文翻译

获取价格

数据手册

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DS1239 数据手册

DS1239

MicroManager Chip

www.dalsemi.com

FEATURES

PIN ASSIGNMENT

ꢀ Provides necessary control for start up and

shutdown of power supply from keyboard

ꢀ Holds microprocessor in check during power

transients

ꢀ Halts and restarts an out-of-control

microprocessor

ꢀ Monitors push button for external override

ꢀ Warns microprocessor of an impending power

failure

ꢀ Converts CMOS SRAM into nonvolatile

memory

VBAT

VCCO

VCC

GND

PSO

RST

PBRST

CEI

VBAT

VCCO

VCC

GND

PSO

RST

PBRST

CEI

CEO

NMI

WC/SC

PSI

NMI

WC/SC

PSI

ꢀ Unconditionally write-protects memory when

power supply is out of tolerance

ꢀ Consumes less than 100 nA of battery current

ꢀ Controls external power switch for high

current applications

ꢀ Accurate 10% power supply monitoring

ꢀ Optional 5% power supply monitoring

designated DS1239-5

ꢀ Provides orderly shutdown in nonvolatile

microprocessor applications

ꢀ Supplies necessary control for low-power

“stop mode” in battery operate hand-held

applications

DS1239 16-Pin DIP (300-mil)

See Mech. Drawings Section

DS1239 16-Pin SOIC (300-mil)

See Mech. Drawings Section

PIN DESCRIPTION

V_BAT

V_CCO

V_CC

GND

- +3 Volt Battery Input

- Switched SRAM Supply Output

- +5 Volt Power Supply Input

- Ground

- Power Fail (Active High)

- Power Fail (Active Low)

- Wake-Up Control (Sleep)

- Power Supply Control Input

- Early Warning Input

WC/SC

PSI

ꢀ Standard 16-pin DIP or space-saving 16-pin

SOIC

ꢀ Optional industrial temperature range -40°C

to +85°C

NMI

- Non-Maskable Interrupt

- Strobe Input

CEO

CEI

- Chip Enable Output

- Chip Enable Input

PBRST

RST

PSO

- Pushbutton Reset Input

- Reset Output (Active low)

- Power Supply Control Outputs

DESCRIPTION

The DS1239 MicroManager provides all the necessary functions for power supply control and

monitoring, reset control, and memory backup in microprocessor-based systems. Using the DS1239, an

AC power switch is no longer required for microprocessor-based systems. A keyboard control system for

power supply start up and shutdown is provided through the use of the Power Supply Control Input and

Output. In other respects, the DS1239 is functionally identical to a DS1236 in the NMOS mode. For a

complete description of the other DS1239 features, refer to the DS1236 data sheet. Pin-out of the

1 of 4

111899

12 3 4

中文翻译

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与DS1239相关器件

型号	品牌	获取价格	描述	数据表
DS1239-10	MAXIM	获取价格	Power Supply Management Circuit, Fixed, 1 Channel, PDIP16, 0.300 INCH, PLASTIC, DIP-16
DS1239-10+	ROCHESTER	获取价格	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP16, 0.300 INCH, ROHS COMPLIANT, PLASTIC, DIP-16
DS1239-10N	ETC	获取价格	Analog IC
DS1239-5	MAXIM	获取价格	Power Supply Management Circuit, Fixed, 1 Channel, PDIP16, 0.300 INCH, PLASTIC, DIP-16
DS1239-5	ROCHESTER	获取价格	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP16, 0.300 INCH, PLASTIC, DIP-16
DS1239-5+	MAXIM	获取价格	Power Supply Management Circuit, Fixed, 1 Channel, PDIP16, 0.300 INCH, ROHS COMPLIANT, PLA
DS1239-5N	ETC	获取价格	Analog IC
DS1239N	ETC	获取价格	Power Supply Supervisor
DS1239N-5	ETC	获取价格	Power Supply Supervisor
DS1239S	ETC	获取价格	Power Supply Supervisor

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