DS1643-70中文资料PDF规格书
DS1643-70规格书详情
DESCRIPTION
The DS1643 is an 8K x 8 nonvolatile static RAM with a full function Real Time Clock (RTC) that are both accessible in a byte-wide format. The nonvolatile timekeeping RAM is functionally equivalent to any JEDEC standard 8K x 8 SRAM. The device can also be easily substituted in ROM, EPROM and EEPROM sockets providing read/write nonvolatility and the addition of the real time clock function. The real time clock information resides in the eightuppermost RAM locations.
FEATURES
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 Reside in the Eight Top RAM Locations.
Totally Nonvolatile with Over 10 Years of Operation in the Absence of Power
Access Times of 85ns and 100ns
BCD-Coded Year, Month, Date, Day, Hours, Minutes, and Seconds with Leap Year Compensation Valid Up to 2100
Power-Fail Write Protection Allows for ±10 VCCPower Supply Tolerance
Lithium Energy Source is Electrically
Disconnected to Retain Freshness Until Power is Applied for the First Time
DS1643 Only (DIP Module)
Standard JEDEC Byte-Wide 8K x 8 RAM Pinout
UL Recognized
DS1643P Only (PowerCap Module Board) Surface Mountable Package for Direct Connection to PowerCap Containing Battery and Crystal Replaceable Battery (PowerCap) Power-Fail Output
Pin-for-Pin Compatible with Other Densities of
DS164XP Timekeeping RAM
产品属性
- 产品编号:
DS1643-70
- 制造商:
Analog Devices Inc./Maxim Integrated
- 类别:
集成电路(IC) > 实时时钟
- 包装:
管件
- 类型:
时钟/日历
- 特性:
闰年,NVSRAM
- 存储容量:
8KB
- 时间格式:
HH:MM:SS(24 小时)
- 日期格式:
YY-MM-DD-dd
- 接口:
并联
- 电压 - 供电:
4.5V ~ 5.5V
- 电流 - 计时(最大值):
3mA @ 5V
- 工作温度:
0°C ~ 70°C
- 安装类型:
通孔
- 封装/外壳:
28-DIP 模块(0.600",15.24mm)
- 供应商器件封装:
28-EDIP
- 描述:
IC RTC CLK/CALENDAR PAR 28-EDIP
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
DALLAS |
22+ |
DIP |
7665 |
原装现货假一赔十 |
询价 | ||
Maxim |
21+ |
28EDIP |
13880 |
公司只售原装,支持实单 |
询价 | ||
23+ |
N/A |
85800 |
正品授权货源可靠 |
询价 | |||
Maxim(美信) |
23+ |
标准封装 |
8048 |
原厂渠道供应,大量现货,原型号开票。 |
询价 | ||
DALLAS |
23+ |
DIP |
8560 |
受权代理!全新原装现货特价热卖! |
询价 | ||
DALLAS |
23+ |
MOD |
65480 |
询价 | |||
DS |
21+ROHS |
10000 |
原厂授权一级代理,专业海外优势订货,价格优势、品种 |
询价 | |||
DS |
22+ |
DIP-28 |
2450 |
公司只做原装!现货供应! |
询价 | ||
DS |
22+ |
DIP-28 |
2630 |
询价 | |||
DS |
22+ |
DIP-28 |
21000 |
原厂原包装。假一罚十。可开13%增值税发票。 |
询价 |