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參數(shù)資料
| 型號(hào)： | NCP1232DR2 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 電源管理 |
| 英文描述： | Microprocessor Monitor |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封裝： | PLASTIC, SOIC-8 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 95K |
| 代理商： | NCP1232DR2 |
Semiconductor Components Industries, LLC, 2000
May, 2000 – Rev. 0
1
Publication Order Number:
NCP1232/D
The NCP1232 is a fully–integrated processor supervisor. It provides
three important functions to safeguard processor functionality:
precision power on/off reset control, watchdog timer and external
reset override.
On power–up, the NCP1232 holds the processor in the reset state for
a minimum of 250 msec after VCC is within tolerance to ensure a
stable system start–up.
Microprocessor functionality is monitored by the on–board
watchdog circuit. The microprocessor must provide a periodic
low–going signal on the ST input. Should the processor fail to supply
this signal within the selected time–out period (150 msec, 600 msec or
1200 msec), an out–of–control processor is indicated and the
NCP1232 issues a processor reset as a result.
The outputs of the NCP1232 are immediately driven active when
the PB input is brought low by an external push–button switch or other
electronic signal. When connected to a push–button switch, the
NCP1232 provides contact debounce.
The NCP1232 is packaged in a space–saving 8–pin plastic SOIC
package and requires no external components.
Features
Precision Voltage Monitor
(Adjustable +4.5 V or +4.75 V)
Reset Pulse Width (250 msec Min)
No External Components
Adjustable Watchdog Timer
(150 msec, 600 msec or 1.2 sec)
Debounced Manual Reset Input for External Override
Applications
Computers
Controllers
Intelligent Instruments
Automotive Systems
Critical
μ
P Power Monitoring
YY, Y
WW
X
Z
= Year
= Work Week
= Assembly ID Code
= Subcontractor ID Code
http://onsemi.com
SO–8
D SUFFIX
CASE 751
1
8
Device
Package
Shipping
ORDERING INFORMATION
NCP1232DR2
SO–8
2500 Tape & Reel
NCP
1232
YWWXZ
1
8
MARKING
DIAGRAM
ST
RST
RST
GND
4
PB RST
1
2
3
8
7
6
5
(Top View)
PIN CONNECTIONS
8–Pin SOIC
TD
TOL
VCC
N
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