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DS17485E-3 PDF预览

DS17485E-3

更新时间: 2024-11-18 23:16:31
品牌 Logo 应用领域
达拉斯 - DALLAS 计时器或实时时钟微控制器和处理器外围集成电路光电二极管
页数 文件大小 规格书
38页 426K
描述
3V/5V Real-Time Clock

DS17485E-3 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:TSOP-28Reach Compliance Code:unknown
风险等级:5.71Is Samacsys:N
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, MUXED BUS中断能力:Y
JESD-30 代码:R-PDSO-G28JESD-609代码:e0
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:0.032768 MHz
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装等效代码:TSSOP28,.53,22封装形状:RECTANGULAR
封装形式:SMALL OUTLINE电源:3 V
认证状态:Not QualifiedRAM(字数):4210
子类别:Timer or RTC最大压摆率:30 mA
最大供电电压:3.3 V最小供电电压:2.7 V
标称供电电压:3 V表面贴装:YES
技术:CMOS温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:0.55 mm端子位置:DUAL
最短时间:SECONDS易失性:YES
uPs/uCs/外围集成电路类型:TIMER, REAL TIME CLOCKBase Number Matches:1

DS17485E-3 数据手册

 浏览型号DS17485E-3的Datasheet PDF文件第2页浏览型号DS17485E-3的Datasheet PDF文件第3页浏览型号DS17485E-3的Datasheet PDF文件第4页浏览型号DS17485E-3的Datasheet PDF文件第5页浏览型号DS17485E-3的Datasheet PDF文件第6页浏览型号DS17485E-3的Datasheet PDF文件第7页 
DS17485/DS17487  
3V/5V Real-Time Clock  
www.maxim-ic.com  
FEATURES  
PIN ASSIGNMENT  
Incorporates industry standard DS1287 PC clock  
plus enhanced features:  
1
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
VCC  
PWR  
X1  
SQW  
2
3
4
5
6
7
8
9
10  
CꢀY2K compliant  
VBAUX  
X2  
AD0  
AD1  
AD2  
AD3  
AD4  
AD5  
AD6  
AD7  
Cꢀ+3V or +5V operation  
RCLR  
VBAT  
IRQ  
KS  
CꢀSMI recovery stack  
Cꢀ64-bit silicon serial number  
CꢀPower-control circuitry supports system  
power-on from date/time alarm or key  
closure  
RD  
GND  
WR  
ALE  
11  
12  
Cꢀ32kHz output on power-up  
CꢀCrystal select bit allows RTC to operate with  
6pF or 12.5pF crystal  
CS  
GND  
DS17485 24-Pin DIP  
DS17485S 24-Pin SO  
Cꢀ114 bytes user NV RAM  
CꢀAuxiliary battery input  
1
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
VCC  
PWR  
Cꢀ4kB additional NV RAM  
CꢀRAM clear input  
NC  
NC  
SQW  
2
3
4
5
6
7
8
9
10  
VBAUX  
CꢀCentury register  
RCLR  
NC  
AD0  
AD1  
AD2  
AD3  
AD4  
AD5  
AD6  
AD7  
CꢀDate alarm register  
IRQ  
KS  
CꢀCompatible with existing BIOS for original  
DS1287 functions  
RD  
CꢀAvailable as chip (DS17485) or standalone  
module with embedded battery and crystal  
(DS17487)  
NC  
WR  
ALE  
11  
12  
CS  
GND  
CꢀTimekeeping algorithm includes leap-year  
compensation valid up to 2100  
CꢀUnderwriters Laboratory (UL) recognized  
DS17487 24-Pin  
Encapsulated Package  
TYPICAL OPERATING CIRCUIT  
IRQ  
VBAT  
RCLR  
VBAUX  
SQW  
VCC  
1
2
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
KS  
RD  
3
GND  
WR  
4
5
ALE  
CS  
6
VCC  
7
GND  
GND  
AD7  
AD6  
NC  
PWR  
X1  
8
9
X2  
10  
11  
12  
13  
14  
NC  
ADO  
AD1  
AD2  
AD5  
AD4  
AD3  
DS17485E 28-Pin TSOP  
1 of 38  
050802  

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