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DS1644P+120中文资料PDF规格书
DS1644P+120规格书详情
DESCRIPTION
The DS1644 is a 32k x 8 nonvolatile static RAM with a full function real time clock, which are both accessible in a byte-wide format. The nonvolatile timekeeping RAM is functionally equivalent to any JEDEC standard 32k x 8 SRAM. The device can also be easily substituted for ROM, EPROM and EEPROM, providing read/write nonvolatility and the addition of the real time clock function.
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 are Resident in the Eight Top RAM Locations.
■ Totally Nonvolatile with Over 10 Years of Operation in the Absence of Power
■ 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 VCC Power Supply Tolerance
■ DS1644 Only (DIP Module) Upward Compatible with the DS1643 Timekeeping RAM to Achieve Higher RAM Density Standard JEDEC Bytewide 32k x 8 Static RAM Pinout
■ DS1644P 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 Underwriters Laboratory (UL) Recognized
产品属性
- 型号:
DS1644P+120
- 制造商:
DALLAS
- 制造商全称:
Dallas Semiconductor
- 功能描述:
Nonvolatile Timekeeping RAM
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
DALLAS |
23+ |
PCM |
6500 |
只做原装正品现货!或订货假一赔十! |
询价 | ||
DS |
23+ |
DIP-20 |
18000 |
询价 | |||
DALLAS |
2020+ |
原厂封装 |
350000 |
100%进口原装正品公司现货库存 |
询价 | ||
DALLAS |
23+ |
34-PCM |
8890 |
价格优势/原装现货/客户至上/欢迎广大客户来电查询 |
询价 | ||
DALLAS |
23+ |
QFP |
65480 |
询价 | |||
DALLAS |
2020+ |
34-PCM |
4 |
百分百原装正品 真实公司现货库存 本公司只做原装 可 |
询价 | ||
DALLAS |
2018+ |
SOP |
30617 |
一级代理全新原装热卖 |
询价 | ||
MAXIM |
23+ |
PWRCP |
8888 |
专做原装正品,假一罚百! |
询价 | ||
Maxim |
21+ |
34PowerCap Module |
13880 |
公司只售原装,支持实单 |
询价 | ||
DALLAS |
18+ |
34-PCM |
7845 |
全新原装现货,可出样品,可开增值税发票 |
询价 |