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DS1691 PDF预览

DS1691

更新时间: 2024-11-12 22:50:47
品牌 Logo 应用领域
达拉斯 - DALLAS 外围集成电路光电二极管双倍数据速率控制器时钟
页数 文件大小 规格书
5页 50K
描述
3 Volt/5 Volt Serialized Real Time Clock with NV RAM Control

DS1691 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:0.740 INCH, MODULE, DIP-28Reach Compliance Code:unknown
风险等级:5.78其他特性:CAN ALSO OPERATE WITH 5V SUPPLY
最大时钟频率:0.032 MHz外部数据总线宽度:8
信息访问方法:PARALLEL, DIRECT ADDRESS/MUXED BUS中断能力:Y
JESD-30 代码:R-PDMA-T28JESD-609代码:e0
位数:16端子数量:28
计时器数量:1片上数据RAM宽度:8
最高工作温度:70 °C最低工作温度:
最大输出时钟频率:0.032 MHz封装主体材料:PLASTIC/EPOXY
封装代码:DIP封装等效代码:DIP28,.6
封装形状:RECTANGULAR封装形式:MICROELECTRONIC ASSEMBLY
电源:3/5 V认证状态:Not Qualified
RAM(字数):114子类别:Timer or RTC
最大压摆率:15 mA最大供电电压:5.5 V
最小供电电压:2.7 V标称供电电压:3.3 V
表面贴装:NO技术:CMOS
温度等级:COMMERCIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL最短时间:SECONDS
易失性:NOuPs/uCs/外围集成电路类型:TIMER, REAL TIME CLOCK
Base Number Matches:1

DS1691 数据手册

 浏览型号DS1691的Datasheet PDF文件第2页浏览型号DS1691的Datasheet PDF文件第3页浏览型号DS1691的Datasheet PDF文件第4页浏览型号DS1691的Datasheet PDF文件第5页 
DS1688/DS1691  
DS1688/DS1691  
3 Volt/5 Volt Serialized Real Time Clock  
with NV RAM Control  
FEATURES  
PIN ASSIGNMENT  
Incorporates industry standard DS1287 PC clock plus  
enhanced features:  
V
1
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
CEI  
V
1
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
CEI  
BAUX  
X1  
BAUX  
X1  
2
CEO  
2
CEO  
X2  
3
V
X2  
3
V
CCI  
+3 or +5 volt operation  
CCI  
RCLR  
AD0  
AD1  
AD2  
AD3  
AD4  
AD5  
AD6  
AD7  
PWR  
GND  
4
V
RCLR  
AD0  
AD1  
AD2  
AD3  
AD4  
AD5  
AD6  
AD7  
PWR  
GND  
4
V
CCO  
CCO  
5
SQW  
5
SQW  
64–bit Silicon serial number  
6
V
6
V
BAT  
BAT  
64–bit customer specific ROM or additional serial  
number available  
7
IRQ  
PSEL  
RD  
7
IRQ  
PSEL  
RD  
8
8
9
9
Power control circuitry supports system power on  
from date/time alarm or key closure  
10  
11  
12  
13  
14  
GND  
WR  
ALE  
CS  
10  
11  
12  
13  
14  
GND  
WR  
ALE  
CS  
Automatic battery backup and write protection to  
external SRAM  
KS  
KS  
DS1688 28–PIN DIP  
(600 MIL)  
DS1688S 28–PIN SOIC  
(330 MIL)  
Crystal select bit allows RTC to operate with 6 pF or  
12.5 pF crystal  
V
1
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
CEI  
BAUX  
NC  
114 bytes user NVRAM  
Auxiliary battery input  
RAM clear input  
2
CEO  
NC  
3
V
V
CCI  
RCLR  
AD0  
AD1  
AD2  
AD3  
AD4  
AD5  
AD6  
AD7  
PWR  
GND  
4
CCO  
5
SQW  
NC  
6
Century register  
7
IRQ  
PSEL  
RD  
8
32 KHz output for power management  
9
10  
11  
12  
13  
14  
NC  
32–bit V powered elapsed time counter  
CC  
WR  
ALE  
CS  
32–bit V  
powered elapsed time counter  
BAT  
16–bit power cycle counter  
KS  
Compatible with existing BIOS for original DS1287  
functions  
DS1691 28–PIN ENCAPSU-  
LATED PACKAGE (740 MIL)  
Available as chip (DS1688) or stand–alone module  
PIN DESCRIPTION  
with embedded battery and crystal (DS1691)  
X1  
Crystal Input  
Timekeepingalgorithmincludesleapyearcompensa-  
tion valid up to 2100  
X2  
Crystal Output  
RCLR  
AD0-AD7  
PWR  
KS  
RAM Clear Input  
Mux’ed Address/Data Bus  
Power–on Interrupt Output  
Kickstart Input  
ORDERING INFORMATION  
PART #  
DS1688  
DS1688S  
DS1691  
DESCRIPTION  
CS  
ALE  
WR  
RTC Chip Select Input  
RTC Address Strobe  
RTC Write Data Strobe  
RTC Read Data Strobe  
RAM Power Supply Output  
RTC Chip, 28–pin DIP  
RTC Chip, 28–pin SOIC  
RTC Module; 28–pin DIP  
RD  
V
CCO  
030598 1/5  

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