参数资料
型号: DS1685QN-5+
厂商: Maxim Integrated Products
文件页数: 16/34页
文件大小: 0K
描述: IC RTC 5V 64-BIT Y2KC IND 28PLCC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 37
类型: 时钟/日历
特点: 警报器,NVSRAM,方波输出,Y2K
存储容量: 242B
时间格式: HH:MM:SS(12/24 小时)
数据格式: YY-MM-DD-dd
接口: 并联
电源电压: 4.5 V ~ 5.5 V
电压 - 电源,电池: 2.5 V ~ 3.7 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-LCC(J 形引线)
供应商设备封装: 28-PLCC(11.51x11.51)
包装: 管件
产品目录页面: 1434 (CN2011-ZH PDF)
DS1685/DS1687 3V/5V Real-Time Clocks
23 of 34
The RTC address is latched on the falling edge of the ALE signal. Each time an RTC address is latched, the
register address stack is pushed. The stack is only four registers deep, holding the three previous RTC addresses
in addition to the current RTC address being accessed. The following waveform illustrates how the BIOS could
recover the RTC address when an SMI occurs.
1) The RTC address is latched.
2) An SMI is generated before an RTC read or write occurs.
3) RTC address 0Ah is latched and the address from 1 is pushed to the RTC Address-1 stack location. This step
is necessary to change the bank select bit, DV0 = 1.
4) RTC address 4Eh is latched and the address from “1” is pushed to location “4Eh,” “RTC Address-2” while 0Ah
is pushed to the “RTC Address-1” location. The data in this register, 4Eh, is the RTC address lost due to the
SMI.
1
2
3
4
ALE
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相关代理商/技术参数
参数描述
DS1685QN-5/T&R 制造商:Maxim Integrated Products 功能描述:IC RTC 5V 64-BIT Y2KC IND 28PLCC
DS1685QN-5/T&R 功能描述:实时时钟 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube
DS1685QN-5/TR 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:3V/5V Real-Time Clocks
DS1685QN-5_12 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:3V/5V Real-Time Clocks
DS1685QN-5+ 功能描述:实时时钟 3V/5V RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube