參數(shù)資料
型號(hào)： M48T254V-10ZA1
廠商： STMICROELECTRONICS
元件分類： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： REAL TIME CLOCK, PBGA168
封裝： 42.50 X 42.50 MM, 1.27 MM PITCH, BGA-168
文件頁數(shù)： 3/26頁
文件大?。?/td> 366K
代理商： M48T254V-10ZA1
11/26
M48T254V
Table 3. AC Electrical Characteristics
Note: 1. Valid for Ambient Operating Temperature: TA = 0 to 70°C; VCC = 3.0 to 3.6V (except where noted).
2. These parameters are sampled with a 5 pF load are not 100% tested.
3. tWP is specified as the logical AND of CE and WE. tWP is measured from the latter of CE or WE going low to the earlier of CE or
WE going high.
4. tWR is a function of the latter occurring edge of WE or CE.
Symbol
Parameter(1)
Min
Max
Unit
tAVAV
tRC
READ Cycle Time
100
ns
tAVQV
tACC
Access Time
100
ns
tELQV
tCO
Chip Enable Low to Output Valid
100
ns
tGLQV
tOE
Output Enable Low to Output Valid
55
ns
tELQX
tCOE
(2)
Chip Enable or Output Enable Low to Output Transition
5
ns
tAXQX
tOH
Output Hold from Address Change
5
ns
tEHQZ
tOD
(2)
Chip Enable High to Output Hi-Z
35
ns
tGHQZ
tODO
(2)
Output Enable High to Output Hi-Z
35
ns
tWLQZ
tODW
(2)
Output Hi-Z from WE
35
ns
tAVAV
tWC
WRITE Cycle Time
100
ns
tWLWH
tELEH
tWP
(3)
WE, CE Pulse Width
70
ns
tAVEL
tAW
Address Setup Time
0
ns
tWHAX
tAH1
Address Hold Time from WE
5ns
tEHAX
tAH2
Address Hold Time from CE
25
ns
tWHQX
tOEW
(2)
Output Active from WE
5ns
tDVEH
tDVWH
tDS
Data Setup Time
40
ns
tWHDX
tDH1
Data Hold Time from WE
0ns
tEHDX
tDH2
Data Hold Time from CE
20
ns
tRR
READ Recovery (Clock Access Only)
20
ns
tWR
(4)
WRITE Recovery (Clock Access Only)
20
ns
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