参数资料
型号: ADM8690ARNZ
厂商: Analog Devices Inc
文件页数: 16/24页
文件大小: 0K
描述: IC SUPERVISOR MPU 4.65V 8SOIC
标准包装: 98
类型: 备用电池电路
监视电压数目: 1
输出: 推挽式,图腾柱
复位: 低有效
复位超时: 最小为 35 ms
电压 - 阀值: 4.65V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SO
包装: 管件
WDI
ADM8690/
ADM8690/ADM8691/ADM8695
ALTERNATE WATCHDOG INPUT DRIVE CIRCUITS
The watchdog feature can be enabled and disabled under
program control by driving WDI with a three-state buffer (see
Figure 28). When three-stated, the WDI input floats, thereby
disabling the watchdog timer.
WATCHDOG
STROBE
Data Sheet
For the ADM8691 / ADM8695 , the watchdog period can be
extended under program control using the circuit shown in
Figure 29. When the control input is high, the OSC SEL pin is
low and the watchdog timeout is set by the external capacitor.
A 0.01 μF capacitor sets a watchdog timeout delay of 100 sec.
When the control input is low, the OSC SEL pin is driven high,
selecting the internal oscillator. The 100 ms or the 1.6 sec
CONTROL
INPUT
ADM8691/
ADM8695
period is chosen, depending on which diode is used, as shown
in Figure 29. With D1 inserted, the internal timeout is set to
Figure 28. Enabling and Disabling the Watchdog Input
100 ms; with D2 inserted, the timeout is set to 1.6 sec.
This circuit is not entirely foolproof, and it is possible for a
software fault to erroneously three-state the buffer, preventing
the ADM8690 / ADM8691 / ADM8695 from detecting that the
CONTROL
INPUT 1
D1
D2
OSC SEL
ADM8691/
ADM8695
OSC IN
microprocessor is no longer operating correctly. In most cases,
a better method is to extend the watchdog period rather than
disable the watchdog.
Rev. C | Page 16 of 24
1 LOW = INTERNAL TIMEOUT
HIGH = EXTERNAL TIMEOUT
Figure 29. Extending the Watchdog Period
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ADM8691 制造商:AD 制造商全称:Analog Devices 功能描述:Microprocessor Supervisory Circuits
ADM8691AN 制造商:Analog Devices 功能描述:Processor Supervisor 4.65V 4.75V to 5.5V 16-Pin PDIP 制造商:Rochester Electronics LLC 功能描述:IMPROVED ADM691 I.C. - Bulk 制造商:Analog Devices 功能描述:IC SUPERVISORY CCT 8691 DIP16
ADM8691ANZ 功能描述:IC SUPERVSR MPU 4.65V ADJ 16DIP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:1 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:高有效 复位超时:- 电压 - 阀值:1.8V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-TSOP(0.059",1.50mm 宽)5 引线 供应商设备封装:5-TSOP 包装:剪切带 (CT) 其它名称:NCP301HSN18T1GOSCT
ADM8691ARN 功能描述:IC SUPERVSR MPU 4.65V ADJ 16SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:1 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:高有效 复位超时:- 电压 - 阀值:1.8V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-TSOP(0.059",1.50mm 宽)5 引线 供应商设备封装:5-TSOP 包装:剪切带 (CT) 其它名称:NCP301HSN18T1GOSCT
ADM8691ARN-REEL 功能描述:IC SUPERVSR MPU 4.65V ADJ 16SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:1 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:高有效 复位超时:- 电压 - 阀值:1.8V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-TSOP(0.059",1.50mm 宽)5 引线 供应商设备封装:5-TSOP 包装:剪切带 (CT) 其它名称:NCP301HSN18T1GOSCT