参数资料
型号: DS1685SN-3+
厂商: Maxim Integrated Products
文件页数: 31/34页
文件大小: 0K
描述: IC RTC 3V 64-BIT Y2KC IND 24SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 31
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: 2.7 V ~ 3.7 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: 24-SOIC(0.295",7.50mm 宽)
供应商设备封装: 24-SOIC W
包装: 管件
DS1685/DS1687 3V/5V Real-Time Clocks
6 of 34
Figure 1. Block Diagram
OSCILLATOR CIRCUIT
The DS1685 uses an external 32.768kHz crystal. The oscillator circuit does not require any external resistors or
capacitors to operate. Table 1 specifies several crystal parameters for the external crystal, and Figure 2 shows a
functional schematic of the oscillator circuit. The oscillator is controlled by an enable bit in the control register.
Oscillator startup times are highly dependent upon crystal characteristics, PC board leakage, and layout. High ESR
and excessive capacitive loads are the major contributors to long startup times. A circuit using a crystal with the
recommended characteristics and proper layout usually starts within one second.
Power
Control
VBAT
GND
OSC
BUS
Interface
VCC
X1
X2
CS
WR
ALE
RD
AD0 - AD7
Divide
by 8
Divide by
64
Divide by
64
16:1 Mux
Square
Wave
Generator
Registers A, B,C,D
Clock/Calendar and
Alarm Registers
User Ram
114 Bytes
Clock/Calender
Update Logic
IRQ
SQW
RLCR
IRQ
Generator
Buffered Clock/
Calendar and Alarm
Registers
VBAUX
Extended RAM Addr/
Data Registers
Extended Control/
Status Registers
64-Bit Serial Number
Century Counter
Date Alarm
RTC Address -2
RTC Address -3
Extended
User RAM
128 Bytes
RAM
Clear
Logic
DS1687 only
Select
PWR
KS
DS1685/DS1687
相关PDF资料
PDF描述
DS1685-3+ IC RTC 3V 64-BIT Y2KC 24-DIP
DS1868S-50+ IC POT DIGITAL DUAL 50K 16-SOIC
DS12885N+ IC RTC W/RAM 128 BYTE 24-DIP
DS1868S-10+ IC POT DIGITAL DUAL 10K 16-SOIC
DS1305N+ IC RTC SERIAL ALARM 16-DIP
相关代理商/技术参数
参数描述
DS1685SN-3+ 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
DS1685SN-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
DS1685SN-5/T& 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:3V/5V Real-Time Clocks
DS1685SN-5/T&R 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
DS1685SN-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