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DS1232LP Datasheet

  • DS1232LP

  • Low Power MicroMonitor Chip

  • 7頁

  • DALLAS   DALLAS

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DS1232LP/LPS
DS1232LP/LPS
Low Power MicroMonitor Chip
FEATURES
PIN ASSIGNMENT
NC
PBRST
TD
TOL
1
2
3
4
8
7
6
5
V
CC
ST
RST
RST
PBRST
NC
TD
NC
TOL
NC
DS1232LP 8鈥揚in DIP
(300 Mil)
See Mech. Drawings
Section
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
NC
VCC
NC
ST
NC
RST
NC
RST
鈥?/div>
Super low-power version of DS1232
鈥?/div>
50
mA
quiescent current
鈥?/div>
Halts and restarts an out鈥搊f鈥揷ontrol microprocessor
鈥?/div>
Automatically
failure
restarts microprocessor after power
GND
鈥?/div>
Monitors pushbutton for external override
鈥?/div>
Accurate 5%
monitoring
or 10% microprocessor power supply
DS1232LPS 16鈥揚in SOIC
(300 Mil)
See Mech. Drawings
Section
PBRST
TD
TOL
GND
1
2
3
4
8
7
6
5
VCC
ST
RST
RST
鈥?/div>
8鈥損in DIP, 8鈥損in SOIC or space saving
碌鈥揝OP
pack-
age available
鈥?/div>
Optional 16鈥損in SOIC package available
鈥?/div>
Industrial temperature 鈥?0擄C to +85擄C available, des-
ignated N
PBRST
TD
TOL
GND
1
2
3
4
8
7
6
5
V
CC
ST
RST
RST
DS1232LP碌
(118 MIL
碌鈥揝OP)
See Mech. Drawings
Section
DS1232LPS鈥? 8鈥揚in
SOIC
(150 Mil)
See Mech. Drawings
Section
PIN DESCRIPTION
PBRST
TD
TOL
GND
RST
RST
ST
V
CC
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Pushbutton Reset Input
Time Delay Set
Selects 5% or 10% V
CC
Detect
Ground
Reset Output (Active High)
Reset Output (Active Low, open drain)
Strobe Input
+5 Volt Power
DESCRIPTION
The DS1232LP/LPS Low Power MicroMonitor Chip
monitors three vital conditions for a microprocessor:
power supply, software execution, and external over-
ride. First, a precision temperature鈥揷ompensated refer-
ence and comparator circuit monitors the status of V
CC
.
When an out鈥搊f鈥搕olerance condition occurs, an internal
power fail signal is generated which forces reset to the
active state. When V
CC
returns to an in-tolerance condi-
tion, the reset signals are kept in the active state for a
minimum of 250 ms to allow the power supply and pro-
cessor to stabilize.
The second function the DS1232LP/LPS performs is
pushbutton reset control. The DS1232LP/LPS de-
bounces the pushbutton input and guarantees an active
reset pulse width of 250 ms minimum. The third function
is a watchdog timer. The DS1232LP/LPS has an inter-
nal timer that forces the reset signals to the active state if
062698 1/7

DS1232LP 產(chǎn)品屬性

  • Lead (SnPb) Finish for COTSObsolescence Mitigation Program

  • 50

  • 集成電路 (IC)

  • PMIC - 監(jiān)控器

  • MicroMonitor™

  • 簡單復(fù)位/加電復(fù)位

  • 1

  • 開路漏極，推挽式

  • 高有效/低有效

  • 可調(diào)節(jié)/可選擇

  • 4.37V，4.62V

  • 0°C ~ 70°C

  • 通孔

  • 8-DIP（0.300"，7.62mm）

  • 8-PDIP

  • 管件

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