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DS1248-70 PDF预览

DS1248-70

更新时间: 2024-11-12 14:41:51
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
21页 277K
描述
Real Time Clock, CMOS, PLASTIC, DIP MODULE, DMA-32

DS1248-70 技术参数

生命周期:Active零件包装代码:MODULE
包装说明:,针数:32
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.25
Is Samacsys:N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
JESD-30 代码:R-XDMA-T32JESD-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
封装形状:RECTANGULAR封装形式:MICROELECTRONIC ASSEMBLY
认证状态:Not Qualified最大供电电压:5.5 V
最小供电电压:4.5 V标称供电电压:5 V
表面贴装:NO技术:CMOS
温度等级:COMMERCIAL端子面层:TIN LEAD
端子形式:THROUGH-HOLE端子位置:DUAL
uPs/uCs/外围集成电路类型:TIMER, REAL TIME CLOCKBase Number Matches:1

DS1248-70 数据手册

 浏览型号DS1248-70的Datasheet PDF文件第2页浏览型号DS1248-70的Datasheet PDF文件第3页浏览型号DS1248-70的Datasheet PDF文件第4页浏览型号DS1248-70的Datasheet PDF文件第5页浏览型号DS1248-70的Datasheet PDF文件第6页浏览型号DS1248-70的Datasheet PDF文件第7页 
PRELIMINARY  
DS1248/DS1248P  
1024K NV SRAM with Phantom Clock  
www.dalsemi.com  
FEATURES  
PIN ASSIGNMENT  
Real time clock keeps track of hundredths of  
RST  
A16  
A14  
A12  
A7  
seconds, minutes, hours, days, date of the  
month, months, and years  
1
32  
31  
VCC  
A15  
NC  
WE  
A13  
A8  
2
3
4
30  
29  
=128K x 8 NV SRAM directly replaces  
volatile static RAM or EEPROM  
=Embedded lithium energy cell maintains  
calendar operation and retains RAM data  
=Watch function is transparent to RAM  
operation  
=Month and year determine the number of  
days in each month; valid up to 2100  
=Full 10% operating range  
=Operating temperature range 0°C to 70°C  
=Over 10 years of data retention in the  
absence of power  
=Lithium energy source is electrically  
disconnected to retain freshness until power  
is applied for the first time  
5
6
28  
27  
A6  
A5  
A9  
7
8
26  
25  
A11  
OE  
A10  
CE  
A4  
A3  
A2  
A1  
9
10  
24  
23  
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  
740 MIL FLUSH  
=DIP Module only  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
NC  
NC  
A14  
1
2
3
4
5
6
7
8
9
– Standard 32–pin JEDEC pinout  
– Upward comparable with the DS1248  
=PowerCap Module Board only  
– Surface mountable package for direct  
connection to PowerCap containing  
battery and crystal  
NC  
A15  
A16  
A13  
A12  
A11  
A10  
A9  
RST  
VCC  
WE  
OE  
CE  
A8  
DQ7  
DQ6  
DQ5  
DQ4  
DQ3  
A7  
A6  
A5  
A4  
A3  
A2  
A1  
A0  
10  
11  
12  
13  
14  
15  
16  
17  
– Replaceable battery (PowerCap)  
– Pin for pin compatible with DS1244P  
and DS1251P  
DQ2  
DQ1  
DQ0  
GND  
VBAT X2  
X1 GND  
34-PIN POWERCAP MODULE BOARD  
(USES DS9034PCX POWERCAP)  
1 of 21  
111999  

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