ZHCSRF8
December 2022
TPS3435
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
器件比较
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Timing Requirements
7.7
Switching Characteristics
7.8
Timing Diagrams
7.9
Typical Characteristics
8
详细说明
8.1
Overview
8.2
Functional Block Diagrams
8.3
Feature Description
8.3.1
Timeout Watchdog Timer
8.3.1.1
tWD Timer
8.3.1.2
Watchdog Enable Disable Operation
8.3.1.3
tSD Watchdog Start Up Delay
8.3.1.4
SET Pin Behavior
8.3.2
Manual RESET
8.3.3
WDO Output
8.4
Device Functional Modes
9
Application and Implementation
9.1
Application Information
9.1.1
Output Assert Delay
9.1.1.1
Factory-Programmed Output Assert Delay Timing
9.1.1.2
Adjustable Capacitor Timing
9.1.2
Watchdog Timer Functionality
9.1.2.1
Factory-Programmed Timing Options
9.1.2.2
Adjustable Capacitor Timing
9.2
Typical Applications
9.2.1
Design 1: Monitoring a Standard Microcontroller for Timeouts
9.2.1.1
Design Requirements
9.2.1.2
Detailed Design Procedure
9.2.1.2.1
Setting the Watchdog Timeout Period
9.2.1.2.2
Setting Output Assert Delay
9.2.1.2.3
Setting the Startup Delay
9.2.1.2.4
Calculating the WDO Pullup Resistor
9.2.1.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
接收文档更新通知
12.2
支持资源
12.3
Trademarks
12.4
Electrostatic Discharge Caution
12.5
术语表
13
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
DDF|8
MPDS569B
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcsrf8_oa
1
特性
出厂编程或用户可编程的看门狗超时
±10% 精确计时器(最大值)
出厂编程:1 毫秒至 100 秒
出厂编程或用户可编程的复位延迟
±10% 精确计时器(最大值)
出厂编程选项:2 毫秒至 10 秒
输入电压范围:V
DD
= 1.04 V 至 6.0 V
超低电源电流:I
DD
= 250nA(典型值)
开漏、推挽;低电平有效输出
各种可编程选项:
看门狗启用/禁用
看门狗启动延迟:无延迟至 10 秒
动态计时器扩展:1X 至 256X
锁存输出选项
MR
功能支持