參數(shù)資料
型號: DS1687-5IND
廠商: Maxim Integrated Products
文件頁數(shù): 9/34頁
文件大?。?/td> 0K
描述: IC RTC 5V 64-BIT Y2K 24-EDIP
產(chǎn)品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 14
類型: 時鐘/日歷
特點: 警報器,NVSRAM,方波輸出,Y2K
存儲容量: 242B
時間格式: HH:MM:SS(12/24 小時)
數(shù)據(jù)格式: YY-MM-DD-dd
接口: 并聯(lián)
電源電壓: 4.5 V ~ 5.5 V
電壓 - 電源,電池: 2.5 V ~ 3.7 V
工作溫度: -40°C ~ 85°C
安裝類型: 通孔
封裝/外殼: 24-DIP 模塊(0.600",15.24mm)
供應商設備封裝: 24-EDIP
包裝: 管件
DS1685/DS1687 3V/5V Real-Time Clocks
17 of 34
Figure 4. Update-Ended And Periodic-Interrupt Relationship
EXTENDED FUNCTIONS
The extended functions provided by the DS1685/DS1687 that are new to the RAMified RTC family are accessed by
a software-controlled bank-switching scheme, as illustrated in Figure 5. In bank 0, the clock/calendar registers and
50 bytes of user RAM are in the same locations as for the DS1287. As a result, existing routines implemented
within BIOS, DOS, or application software packages can gain access to the DS1685/DS1687 clock registers with
no changes. Also in bank 0, an extra 64 bytes of RAM are provided at addresses just above the original locations
for a total of 114 directly addressable bytes of user RAM.
tPI = PERIODIC INTERRUPT TIME INTERNAL PER TABLE 3.
tBUC = DELAY BEFORE UPDATE CYCLE = 244s.
UIP
UF
PF
1 second
t
PI
tPI/2
tBUC
tPI/2
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相關代理商/技術參數(shù)
參數(shù)描述
DS1687-5IND_12 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:3V/5V Real-Time Clocks
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