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參數(shù)資料
| 型號(hào)： | TC32MCDBTR |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO4 |
| 封裝： | SOT-223, 3 PIN |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大小： | 242K |
| 代理商： | TC32MCDBTR |
2006 Microchip Technology Inc.
DS21402C-page 1
TC32M
Features:
Incorporates the Functionality of the Industry
Standard TC1232 (Processor Monitor, Watchdog
and Manual Override Reset Controller) into a
Small, Lower Cost Package
Guards Against Unstable Processor Operation
Resulting from Power “Brown-Out”
Automatically Halts and Restarts an Out-of-
Control Microprocessor
Output can be Wire-ORed, or Hooked to Manual
Reset Push-button Switch
Space-Saving 3-Pin TO-92 or SOT-223 Package
Applications:
All Microprocessor-Based Systems
Battery Powered Computers and Controllers
Automotive Systems
Intelligent Instruments
Critical Processor Monitoring
Embedded Controllers
Device Selection Table
Package Type
General Description:
The TC32M is a fully-integrated processor supervisor
in a 3-pin package. It provides three important func-
tions to safeguard processor sanity: precision power
on/off Reset control, Watchdog Timer and external
Reset override.
On power-up, the TC32M holds the processor in the
Reset state for a minimum of 500 msec after VDD 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
high-to-low level shift (through an external resistor
divider) on the RS pin of the TC32M. Should the
processor fail to supply this signal within the specified
time-out period (typically 700 msec), an out-of-control
processor is indicated and the TC32M issues a
processor Reset as a result.
The output of the TC32M can be wire-ORed with a
push-button switch (or electronic signal) to override the
TC32M and unconditionally reset the processor. When
connected to a push-button switch, the TC32M
provides contact debounce.
The TC32M is packaged in a space-saving TO-92 or
SOT-223 package. It provides all of the functionality of
the industry standard TC1232 in a smaller, lower cost
configuration.
Part Number
Package
Temp. Range
TC32MCDB
SOT-223
0°C to +70°C
TC32MCZB
TO-92
0°C to +70°C
TC32MEDB
SOT-223
-40°C to +85°C
TC32MEZB
TO-92
-40°C to +85°C
1
12
4
3
23
GND
TC32MCDB
TC32MEDB
TC32MCZB
TC32MEZB
V
DD
VDD
RS
ECONOMONITOR – 3-Pin System Supervisor with
Power Supply Monitor and Watchdog
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