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DS1554W PDF预览

DS1554W

更新时间: 2024-11-21 20:25:07
品牌 Logo 应用领域
美信 - MAXIM 时钟双倍数据速率外围集成电路
页数 文件大小 规格书
20页 275K
描述
Real Time Clock, Non-Volatile, CMOS, PLASTIC, MODULE, DIP-32

DS1554W 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Active零件包装代码:MODULE
包装说明:DIP, DIP32,.6针数:32
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.28
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中断能力:Y
JESD-30 代码:R-XDMA-P32JESD-609代码:e0
端子数量:32最高工作温度:70 °C
最低工作温度:封装主体材料:UNSPECIFIED
封装代码:DIP封装等效代码:DIP32,.6
封装形状:RECTANGULAR封装形式:MICROELECTRONIC ASSEMBLY
峰值回流温度(摄氏度):NOT SPECIFIED电源:3.3 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:PIN/PEG
端子节距:2.54 mm端子位置:DUAL
最短时间:SECONDS处于峰值回流温度下的最长时间:NOT SPECIFIED
易失性:NOuPs/uCs/外围集成电路类型:TIMER, REAL TIME CLOCK
Base Number Matches:1

DS1554W 数据手册

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DS1554  
256K NV Y2KC Timekeeping RAM  
www.dalsemi.com  
FEATURES  
PIN ASSIGNMENT  
Integrated NV SRAM, real time clock,  
crystal, power-fail control circuit and lithium  
energy source  
Clock registers are accessed identically to the  
static RAM; these registers are resident in the  
16 top RAM locations  
Century byte register; i.e., Y2K complaint  
Totally nonvolatile with over 10 years of  
operation in the absence of power  
Precision power-on reset  
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%  
RST  
NC  
A14  
A12  
A7  
A6  
A5  
A4  
A3  
1
32  
31  
VCC  
NC  
2
3
4
IRQ/FT  
WE  
A13  
A8  
A9  
A11  
OE  
30  
29  
5
6
28  
27  
7
8
26  
25  
9
10  
24  
23  
A2  
A1  
A10  
CE  
11  
12  
22  
21  
DQ7  
DQ6  
DQ5  
DQ4  
DQ3  
A0  
DQ0  
DQ1  
DQ2  
GND  
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  
NC  
NC  
A14  
34  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
IRQ/FT  
NC  
33  
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
NC  
A13  
A12  
A11  
A10  
A9  
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 20  
022101  

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