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HYB5117805BSJ-50-60 Datasheet, PDF (8/23 Pages) Siemens Semiconductor Group – 2M x 8-Bit Dynamic RAM 2k Refresh | |||
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HYB 5(3)117805/BSJ-50/-60
2M Ã 8 EDO-DRAM
AC Characteristics (contâd) 5, 6
TA = 0 to 70 °C, VCC = 5 V ± 10 % / VCC = 3.3 V ± 0.3 V, tT = 2 ns
Parameter
Symbol
Limit Values
Unit Note
-50
-60
min. max. min. max.
Hyper Page Mode (EDO) Read-Modify-Write Cycle
Hyper page mode (EDO) read-write cycle
tPRWC
58
â
68 â
ns
time
CAS precharge to WE
tCPWD
41
â
49 â
ns
CAS-before-RAS Refresh Cycle
CAS setup time
CAS hold time
RAS to CAS precharge time
Write to RAS precharge time
Write hold time referenced to RAS
tCSR
10 â
10 â
ns
tCHR
10 â
10 â
ns
tRPC
5
â
5
â
ns
tWRP
10 â
10 â
ns
tWRH
10 â
10 â
ns
CAS-before-RAS Counter Test Cycle
CAS precharge time (CAS-before-RAS
counter test cycle)
tCPT
35 â 40 â ns
Test Mode
Write command setup time
Write command hold time
CAS hold time
RAS hold time in test mode
tWTS
10 â
10 â
ns
tWTH
10 â
10 â
ns
tCHRT
30 â
30 â
ns
tRAHT
30 â
30 â
ns
Semiconductor Group
8
1998-10-01
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