參數(shù)資料
型號: MM58167MWC
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 時鐘/數(shù)據(jù)恢復(fù)及定時提取
英文描述: 0 TIMER(S), REAL TIME CLOCK, UUC24
封裝: WAFER-24
文件頁數(shù): 11/13頁
文件大?。?/td> 195K
代理商: MM58167MWC
Write Cycle Timing 0 C s TA s 70 C 45V s VDD s 55V VSS e 0V
Symbol
Parameter
Min
Max
Units
tAW
Address Valid to Write Strobe
100
ns
tCSW
Chip Select to Write Strobe
0
ns
tDW
Data Valid before Write Strobe
100
ns
tWRY
Write Strobe to Ready Strobe
150
ns
tRY
Ready Strobe Width
800
ns
tRYH
Write Hold Time after Ready Strobe
0
ns
tWD
Data Hold Time after Write Strobe
110
ns
tWA
Address Hold Time after Write Strobe
50
ns
Note 4
If data changes while CS and WR are low then they must remain coincident for 1050 ns after the data change to ensure a valid write Data bus loading is
100 pF Ready output loading is 50 pF and 3 kX pull-up
Input and output AC timing levels
Logical one e 20V
Logical zero e 08V
Read and Write Cycle Timing Diagrams
TLF11070 – 6
FIGURE 3 Read Cycle Timing
TLF11070 – 7
FIGURE 4 Write Cycle Timing
7
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