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參數(shù)資料
| 型號： | TC1232EOERT |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO16 |
| 封裝： | SOIC-16 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 62K |
| 代理商： | TC1232EOERT |
TC1232
TC1232-5
7/22/98
2001 Microchip Technology Inc.
DS21370A
GENERAL DESCRIPTION
The TC1232 is a fully-integrated processor supervisor.
It provides three important functions to safeguard processor
sanity: precision power on/off reset control, watchdog timer
and external reset override.
On power-up, the TC1232 holds the processor in the
reset state for a minimum of 250msec after VCC is within
tolerance to ensure a stable system start-up.
Microprocessor sanity is monitored by the on-board
watchdog circuit. The microprocessor must provide a peri-
odic low-going signal on the ST input. Should the processor
fail to supply this signal within the selected time-out period
(150msec, 600msec or 1200msec), an out-of-control pro-
cessor is indicated and the TC1232 issues a processor reset
as a result.
The outputs of the TC1232 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 TC1232 provides contact
debounce.
The TC1232 is packaged in a space-saving 8-pin plastic
DIP or SOIC package and requires no external components.
FEATURES
s
Precision Voltage
Monitor ....................... Adjustable +4.5V or +4.75V
s
Reset Pulse Width ............................. 250msec Min
s
No External Components
s
Adjustable Watchdog
Timer ........................ 150msec, 600msec or 1.2sec
s
Debounced Manual Reset Input for External
Override
MICROPROCESSOR MONITOR
APPLICATIONS
s
Computers
s
Controllers
s
Intelligent Instruments
s
Automotive Systems
s
Critical
P Power Monitoring
FUNCTIONAL BLOCK DIAGRAM
VCC
TC1232
+
–
5%/10%
TOLERANCE
SELECT
TOL
DEBOUNCE
WATCHDOG
TIMEBASE
SELECT
PB RST
TD
GND
REF
WATCHDOG
TIMER
RESET
GENERATOR
RST
ST
+
ORDERING INFORMATION
Part No.
Package
Temp. Range
TC1232COA
8-Pin SOIC
0
°C to +70°C
TC1232COE
16-Pin SOIC (Wide)
0
°C to +70°C
TC1232CPA
8-Pin PDIP
0
°C to +70°C
TC1232EOA
8-Pin SOIC
– 40
°C to +85°C
TC1232EOE
16-Pin SOIC (Wide)
– 40
°C to +85°C
TC1232EPA
8-Pin PDIP
– 40
°C to +85°C
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| TC1270MERC | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC1232EPA | 功能描述:監(jiān)控電路 Microprocessor Montr RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| TC1232EPA | 制造商:Microchip Technology Inc 功能描述:Microprocessor Support IC Voltage Rating |
| TC1235 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Inverting Dual (-VIN, -2VIN) Charge Pump Voltage Converters with Shutdown |
| TC1235EUN | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Inverting Dual (-VIN, -2VIN) Charge Pump Voltage Converters with Shutdown |
| TC1236 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Inverting Dual (-VIN, -2VIN) Charge Pump Voltage Converters with Shutdown |
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