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STK1743 PDF预览

STK1743

更新时间: 2024-11-06 22:53:23
品牌 Logo 应用领域
其他 - ETC 存储静态存储器时钟
页数 文件大小 规格书
10页 240K
描述
NV TIME 8K X 8 AUTOSTORE NVSRAM WITH REAL - TIME CLOCK

STK1743 数据手册

 浏览型号STK1743的Datasheet PDF文件第2页浏览型号STK1743的Datasheet PDF文件第3页浏览型号STK1743的Datasheet PDF文件第4页浏览型号STK1743的Datasheet PDF文件第5页浏览型号STK1743的Datasheet PDF文件第6页浏览型号STK1743的Datasheet PDF文件第7页 
STK1743  
nvTime™  
8K x 8 AutoStore™ nvSRAM  
with Real-Time Clock  
ADVANCE  
FEATURES  
DESCRIPTION  
• Data Integrity of Simtek nvSRAM Combined  
with Full-Featured Real-Time Clock  
The Simtek STK1743 DIP module houses 64Kb of  
nonvolatile static RAM, a real-time clock (RTC) with  
crystal and a high-value capacitor to support sys-  
tems that require high reliability and ease of manu-  
facturing. READ and WRITE access to all RTC  
functions and the memory is the same as a conven-  
tional x 8 SRAM. The highest eight addresses of the  
RAM support clock registers for centuries, years,  
months, dates, days, hours, minutes and seconds.  
• Stand-Alone Nonvolatile Memory and Time-  
Keeping SolutionNo Other Parts Required  
• No Batteries to Fail  
• Fast 25ns, 35ns and 45ns Access Times  
• Software- and AutoStore™-Controlled  
Nonvolatile Cycles  
• Year 2000 Compliant with Leap Year  
Compensation  
Independent data resides in the integral EEPROM at  
all times. Automatic RECALL on power up transfers  
the EEPROM data to the SRAM, while an automatic  
STORE on power down transfers SRAM data to the  
EEPROM. A software RECALL and STORE are also  
possible on user command. nvTime™ allows unlim-  
ited accesses to SRAM, unlimited RECALLs and 106  
STOREs.  
• 24-Hour BCD Format  
• 100-Year Data Retention over Full Industrial  
Temperature Range  
• Full 30-Day RTC Operation on Each Power  
Loss  
• Single 5V ± 10% Power Supply  
BLOCK DIAGRAM  
PIN CONFIGURATIONS  
NC  
A12  
A7  
1
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
VCC  
W
VCC  
2
EEPROM ARRAY  
128 x 512  
3
NC  
A8  
A9  
A11  
G
A10  
E
DQ7  
DQ6  
DQ5  
DQ4  
DQ3  
A6  
A5  
A4  
A3  
A2  
A1  
A0  
DQ0  
DQ1  
DQ2  
VSS  
4
5
A5  
STORE/  
RECALL  
CONTROL  
POWER  
CONTROL  
6
STORE  
A6  
7
8
A7  
STATIC RAM  
ARRAY  
9
RECALL  
A8  
10  
11  
12  
13  
14  
SOFTWARE  
DETECT  
600 mil  
Dual  
In-Line  
Module  
128 x 512  
A0 - A12  
A9  
A11  
A12  
RTC  
MUX  
DQ0  
DQ1  
DQ2  
DQ3  
DQ4  
DQ5  
DQ6  
DQ7  
PIN NAMES  
COLUMN I/O  
COLUMN DEC  
A
- A  
12  
Address Inputs  
Write Enable  
Data In/Out  
Chip Enable  
Output Enable  
Power (+ 5V)  
Ground  
0
W
A0 -  
A12  
DQ - DQ  
0
7
A A  
2
A
10  
A A  
0
A
4
3
1
E
G
G
V
V
CC  
E
W
SS  
March 1999  
7-1  

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