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MAX1232CPA 微处理器监控器
MAX1232CPA 微处理器监控电路
| 概述 |
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The MAX1232 microprocessor (µP) supervisory circuit provides µP housekeeping and power-supply supervision functions while consuming only 1/10th the power of the DS1232. The MAX1232 enhances circuit reliability in µP systems by monitoring the power supply, monitoring the software execution, and providing a debounced manual reset input. The MAX1232 is a plug-in upgrade of the Dallas DS1232.
A reset pulse of at least 250ms duration is supplied on power-up, power-down, and low-voltage brownout conditions (5% or 10% supply tolerances can be selected digitally). Also featured is a debounced manual reset input that forces the reset outputs to their active states for a minimum of 250ms. A digitally programmable watchdog timer monitors software execution and can be programmed for timeout settings of 150ms, 600ms, or 1.2s. The MAX1232 requires no external components. |
| 关键特性 |
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应用 |
- Consumes 1/10th the Power of the DS1232
- Precision Voltage Monitor—Adjustable +4.5V or +4.75V
- Power-OK/Reset Pulse Width—250ms Min
- No External Components
- Adjustable Watchdog Timer—150ms, 600ms, or 1.2s
- Debounced Manual Reset Input for External Override
- Available in 8-Pin PDIP/SO and 16-Pin Wide SO Packages
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| Key Specifications: Microprocessor Supervisors |
| Part Number |
Number of Monitored Voltages |
Reset Threshold Range (V) |
Active-Low Reset Output |
Active-High Reset Output |
Min. Reset Timeout Range |
Watchdog Feature |
Nom. Watchdog Timeout Range |
Supervisor Features |
Reset Thresh. Acc. (% at +25°C) |
Max. ICC (µA) |
Package |
Package Type |
Operating Temp. Range (°C) |
| MAX1232 |
1 |
3.3 to 5.5 |
Open Drain |
Open Drain |
85ms to 300ms |
Input (WDI) |
1s to 2s <1s adjustable |
Manual Reset |
2.5 |
200.0 |
8/PDIP
8/SOIC
16/SOIC |
Plastic DIP SOIC |
-40 to +85 -55 to +125 0 to +70 |
| 注释 |
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Microprocessor Monitor with Watchdog | |
| 链接至更多信息 |
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样品与定购信息(版本号、型号)： MAX1232 |
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完整的数据资料：(PDF, 516kB： 英文 下载) |
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