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DS1554-70 PDF预览

DS1554-70

更新时间: 2024-11-17 21:53:51
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双倍数据速率
页数 文件大小 规格书
21页 285K
描述
256K NV Y2KC Timekeeping RAM

DS1554-70 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:DIP-32Reach Compliance Code:unknown
风险等级:5.7Is Samacsys:N
其他特性:IT CAN ALSO OPERATE WITH 5V最大时钟频率:14.285 MHz
外部数据总线宽度:8信息访问方法:PARALLEL, DIRECT ADDRESS
中断能力:YJESD-30 代码:R-PDMA-T32
JESD-609代码:e0端子数量:32
计时器数量:最高工作温度:70 °C
最低工作温度:封装主体材料:PLASTIC/EPOXY
封装代码:DIP封装等效代码:DIP32,.6
封装形状:RECTANGULAR封装形式:MICROELECTRONIC ASSEMBLY
电源:5 V认证状态:Not Qualified
子类别:Timer or RTC最大供电电压:3.63 V
最小供电电压:2.97 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

DS1554-70 数据手册

 浏览型号DS1554-70的Datasheet PDF文件第2页浏览型号DS1554-70的Datasheet PDF文件第3页浏览型号DS1554-70的Datasheet PDF文件第4页浏览型号DS1554-70的Datasheet PDF文件第5页浏览型号DS1554-70的Datasheet PDF文件第6页浏览型号DS1554-70的Datasheet PDF文件第7页 
PRELIMINARY  
DS1554  
256K NV Y2KC Timekeeping RAM  
www.dalsemi.com  
FEATURES  
PIN ASSIGNMENT  
Integrated NV SRAM, real time clock, crystal,  
RST  
A16  
A14  
A12  
A7  
A6  
A5  
A4  
A3  
1
32  
31  
VCC  
NC  
power-fail control circuit and lithium energy  
source  
2
3
4
IRQ/FT  
WE  
A13  
A8  
30  
29  
Clock registers are accessed identically to the  
static RAM; these registers are resident in the  
16 top RAM locations  
5
6
28  
27  
A9  
A11  
OE  
7
8
26  
25  
Century byte register; i.e., Y2K complaint  
Totally nonvolatile with over 10 years of  
operation in the absence of power  
9
10  
24  
23  
A2  
A1  
A10  
CE  
11  
12  
22  
21  
Precision power-on reset  
DQ7  
DQ6  
DQ5  
DQ4  
DQ3  
A0  
DQ0  
DQ1  
DQ2  
GND  
Programmable watchdog timer and RTC alarm  
BCD coded year, month, date, day, hours,  
minutes, and seconds with automatic leap year  
compensation valid up to the year 2100  
Battery voltage level indicator flag  
Power-fail write protection allows for ±10%  
13  
14  
15  
16  
20  
19  
18  
17  
32-PIN ENCAPSULATED PACKAGE  
VCC power supply tolerance  
Lithium energy source is electrically  
disconnected to retain freshness until power is  
applied for the first time  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
NC  
NC  
A14  
A13  
A12  
A11  
A10  
A9  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
IRQ/FT  
NC  
NC  
RST  
VCC  
WE  
OE  
CE  
A8  
DQ7  
DQ6  
DQ5  
DQ4  
DQ3  
A7  
A6  
A5  
A4  
A3  
A2  
A1  
A0  
DQ2  
DQ1  
DQ0  
GND  
VBAT X2  
X1 GND  
34-Pin POWERCAP MODULE BOARD  
(USES DS9034PCX POWERCAP)  
1 of 21  
111999  

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