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ASM1232LPN

更新时间： 2024-02-07 20:15:15
品牌 Logo 应用领域
PULSECORE 电源电路电源管理电路微处理器复位电路光电二极管监控
页数 文件大小 规格书
10页 281K
描述
5V μP Power Supply Monitor and Reset Circuit

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ASM1232LPN 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：MSOP包装说明：TSSOP, TSSOP8,.19
针数：8Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.13可调阈值：NO
模拟集成电路 - 其他类型：POWER SUPPLY MANAGEMENT CIRCUITJESD-30 代码：S-PDSO-G8
JESD-609代码：e0长度：3 mm
信道数量：1功能数量：1
端子数量：8最高工作温度：70 °C
最低工作温度：封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装等效代码：TSSOP8,.19
封装形状：SQUARE封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
电源：5 V认证状态：Not Qualified
座面最大高度：1.1 mm子类别：Power Management Circuits
最大供电电流 (Isup)：0.03 mA最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：4.5 V标称供电电压 (Vsup)：5 V
表面贴装：YES温度等级：COMMERCIAL
端子面层：TIN LEAD端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
宽度：3 mmBase Number Matches：1

ASM1232LPN 数据手册

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November 2006  
rev 1.6  
ASM1232LP/LPS  
5V µP Power Supply Monitor and Reset Circuit  
•
Low-cost surface mount packages: 8-pin/16-pin SO, 8-pin  
DIP and 8-pin Micro SO packages  
Wide operating temperature -40°C to +85°C (N suffixed  
devices)  
General Description  
The ASM1232LP/LPS is a fully integrated microprocessor  
supervisor. It can halt and restart a “hung-up” microprocessor,  
restart a microprocessor after a power failure. It has a  
watchdog timer and external reset override.  
•
Applications  
•
•
•
•
•
•
Microprocessor Systems  
Computers  
Controllers  
Portable Equipment  
Intelligent Instuments  
Automotive Systems  
A
precision temperature-compensated reference and  
comparator circuits monitor the 5V, VCC input voltage status.  
During power-up or when the VCC power supply falls outside  
selectable tolerance limits, both RESET and RESET become  
active. When VCC rises above the threshold voltage, the reset  
signals remain active for an additional 250ms minimum,  
allowing the power supply and system microprocessor to  
stabilize. The trip point tolerance signal, TOL, selects the trip  
level tolerance to be either 5% or 10%.  
Typical Operating Circuit  
+5V  
Each device has both a push-pull, active HIGH reset output and  
an open drain active LOW reset output. A debounced manual  
reset input, PBRST, activates the reset outputs for a minimum  
period of 250ms.  
10kΩ  
µP  
ASM1232LP/LPS  
I/O  
RESET  
ST  
There is a watchdog timer to stop and restart a microprocessor  
that is “hung-up”. The watchdog timeouts periods are  
selectable: 150ms, 610ms and 1200ms. If the ST input is not  
strobed LOW before the time-out period expires, a reset is  
generated.  
RESET  
TD  
TOL  
GND  
Devices are available in 8-pin DIP, 16-pin SO and compact 8-  
pin MicroSO packages.  
Block Diagram  
ASM1232LP/LPS  
V
TOL  
RESET  
RESET  
CC  
Key Features  
Tolerance Selection  
•
•
•
•
5V supply monitor  
Selectable watchdog period  
Debounce manual push-button reset input  
+
-
Reference  
VCC  
Precision temperature-compensated voltage reference and  
40kΩ  
Push Button  
Debounce  
PBRST  
comparator.  
•
•
•
Power-up, power-down and brown out detection  
250ms minimum reset time  
Active LOW open drain reset output and active HIGH  
push-pull output  
Reset &  
Watchdog Timer  
Voltage Sense  
Comparators  
TD  
ST  
Watchdog Transition  
Detector  
•
Selectable trip point tolerance: 5% or 10%  
GND  
PulseCore Semiconductor Corporation  
1715 S. Bascom Ave Suite 200, Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018  
www.pulsecoresemi.com  
Notice: The information in this document is subject to change without notice  
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