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參數(shù)資料
| 型號： | DS1233 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 5V EconoReset(5V Econo復(fù)位芯片) |
| 中文描述： | 5V、經(jīng)濟型復(fù)位芯片 |
| 文件頁數(shù)： | 1/5頁 |
| 文件大?。?/td> | 46K |
| 代理商： | DS1233 |
DS1233
5V EconoReset
DS1233
022698 1/5
FEATURES
Automatically restarts microprocessor after power
failure
Monitors pushbutton for external override
Internal circuitry debounces pushbutton switch
Maintains reset for 350 ms after V
CC
returns 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 refer-
ence and voltage sensor
Low–cost TO–92 package or surface mount
SOT–223 package
Internal 5K
pull–up resistor
Operating temperature of –40
°
C to +85
°
C
PIN ASSIGNMENT
DALLAS
DS1233
Econo
Reset
1
2
3
1
2
3
TO–92 PACKAGE
See Mech. Drawings
Section
1
2
3
4
SOT–223 PACKAGE
See Mech. Drawings
Section
PIN DESCRIPTION
PIN 1
GROUND
PIN 2
RESET
PIN 3
V
CC
PIN 4
GROUND (SOT–223 ONLY)
DESCRIPTION
The DS1233 EconoReset monitors two vital conditions
for a microprocessor: power supply and external over-
ride. 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
CC
returns to an in–tolerance condition, the reset sig-
nal 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 con-
trol. The DS1233 debounces a pushbutton closure and
will generate a 350 ms reset pulse upon release.
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。