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DS1832U Datasheet

  • DS1832U

  • Voltage Detector

  • 7頁

  • ETC

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DS1832
3.3-Volt MicroMonitor Chip
www.dalsemi.com
FEATURES
Halts and restarts an out-of-control
microprocessor
Holds microprocessor in check during power
transients
Automatically restarts microprocessor after
power failure
Monitors pushbutton for external override
Accurate 10% or 20% microprocessor power
monitoring
Eliminates need for discrete components
20% tolerance for use with 3.0-volt systems
Pin-compatible with the DS1232
Low cost 8-pin DIP, 8-pin SOIC, and space
saving
碌-SOP
packages available
Industrial temperature range of -40擄C to
+85擄C
PIN ASSIGNMENT
PBRST
TD
TOL
GND
1
2
3
4
8
7
6
5
V
CC
ST
RST
RST
DS1832 8-Pin DIP (300-mil)
See Mech. Drawings Section
PBRST
TD
TOL
GND
1
2
3
4
8
7
6
5
V
CC
ST
RST
RST
DS1832S 8-Pin SOIC (150-mil)
See Mech. Drawings Section
PBRST
TD
TOL
GND
1
2
3
4
8
7
6
5
V
CC
ST
RST
RST
DS1832碌 8-Pin
碌-SOP
(118-mil)
See Mech. Drawings Section
PIN DESCRIPTION
PBRST
TD
TOL
GND
RST
RST
ST
V
CC
- Pushbutton Reset Input
- Time Delay Set
- Selects 10% or 20% V
CC
Detect
- Ground
- Active High Reset Output
- Active Low Reset Output
- Strobe Input
- Power Supply
DESCRIPTION
The DS1832 3.3-Volt MicroMonitor monitors three vital conditions for a microprocessor: power supply,
software execution, and external override. First, a precision temperature-compensated reference and
comparator circuit monitor the status of V
CC
. When an out-of-tolerance condition occurs, an internal
power-fail signal is generated which forces the resets to an active state. When V
CC
returns to an
in-tolerance condition, the reset signals are kept in the active state for a minimum of 250 ms to allow the
power supply and processor to stabilize.
1 of 7
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DS1832U 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

  • 推挽式，推挽式

  • 高有效/低有效

  • 最小為 250 ms

  • 2.55V，2.88V

  • -40°C ~ 85°C

  • 表面貼裝

  • 8-TSSOP，8-MSOP（0.118"，3.00mm 寬）

  • 8-uMAX

  • 管件

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