HA16117FPB

更新时间： 2024-02-05 22:15:39

品牌	Logo	应用领域
瑞萨 - RENESAS		电源电路电源管理电路光电二极管
页数	文件大小	规格书
31页	545K
描述
CMOS Watchdog Timer

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HA16117FPB 技术参数

是否Rohs认证：	符合	生命周期：	Not Recommended
零件包装代码：	SOIC	包装说明：	SOP,
针数：	8	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.32	模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：	R-PDSO-G8	JESD-609代码：	e2
湿度敏感等级：	1	信道数量：	1
功能数量：	1	端子数量：	8
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	SOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	260	认证状态：	Not Qualified
最大供电电压 (Vsup)：	14 V	表面贴装：	YES
技术：	CMOS	温度等级：	INDUSTRIAL
端子面层：	Tin/Copper (Sn/Cu)	端子形式：	GULL WING
端子位置：	DUAL	处于峰值回流温度下的最长时间：	20
Base Number Matches：	1

HA16117FPB 数据手册

HA16117F Series

CMOS Watchdog Timer

REJ03F0142-0300

(Previous: ADE-204-018B)

Rev.3.00

Jun 15, 2005

Description

The HA16117F Series of ICs make a micro-processor (MPU) system fail-safe by monitoring its power supply to detect

voltage drops, and monitoring a P-RUN (program running) pulse to detect system crashes. Also referred to as

watchdog timers, these devices are essential in systems that aim for high levels of crash protection. Fabricated by a

CMOS process, they consume little power and are ideally suited for battery-operated systems.

These ICs are available in versions for industrial and communications equipment and automotive applications, as well

as for consumer products.

Functions

•

ower-on reset

Sends a RES signal to the MPU for a fixed time at power-on

•

Watchdog timer (WDT)

Monitors a P-RUN signal from the MPU and sends the MPU a RES signal if P-RUN departs from a set frequency

range

•

Auto-reset

Outputs RES signals to the MPU at clocked intervals while P-RUN remains abnormal

Supply voltage supervision

Outputs a low RES signal if the supply voltage (same as the MPU's V_CC) falls below a low threshold level (V_TL).

The threshold differs for different ICs in the series, allowing designers to choose an IC matching system

requirements (see ordering information)

Features

•

Low power consumption

: Operating (ACC pin low) = 0.5 mW (Typ)

: Standby (ACC pin high) = 0.2 mW (Typ)

•

Watchdog timer on/off control by ACC input signal

Independent auto-reset high and low times (t_RHand t_RL)

Watchdog monitoring by frequency filtering (independent of duty cycle)

High-precision low voltage detection (±2%)

Space- and weight-saving 8-pin SOP package

Ordering Information

The HA16117F Series includes three ICs with different low threshold levels (V_TL).

Type No.

Low Threshold Voltage (V_TL)

HA16117FPA/FPAJ

HA16117FPB/FPBJ

HA16117FPC/FPCJ

4.4 V Typ

4.2 V Typ

4.0 V Typ

Rev.3.00 Jun 15, 2005 page 1 of 30

12 3 4 5 6 7...31

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