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參數(shù)資料
| 型號： | NCP1232 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Precision Analog-to-Digital Converter (ADC) with 8051 Microcontroller and 32k Flash Memory 64-TQFP |
| 中文描述： | 微處理器監(jiān)控 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 95K |
| 代理商： | NCP1232 |
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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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| NCP1232/D | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Microprocessor Monitor |
| NCP1232DR2 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| NCP1234 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Fixed Frequency Current Mode Controller for Flyback Converters |
| NCP1234AD100R2G | 制造商:ON Semiconductor 功能描述:NOBRWN LATCH OCP OVP 100K - Tape and Reel 制造商:ON Semiconductor 功能描述:Switching Controllers NOBRWN LATCH OCP OVP 100K 制造商:ON Semiconductor 功能描述:REEL / NOBRWN LATCH OCP OVP 100K 制造商:ON Semiconductor 功能描述:I-Mode Controller 100kHz Latched SOIC7 |
| NCP1234AD65R2G | 功能描述:電流型 PWM 控制器 Fixed Freq (I) Mode For FlyBk Conv RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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