|
HYM72V8000GS-50- Datasheet, PDF (9/11 Pages) Siemens Semiconductor Group – 8M x 72-Bit Dynamic RAM Module | |||
|
◁ |
HYM72V8000/10GS-50/-60
8M x 72-ECC Module
AC Characteristics (contâd)(note:5, 6,7,8)
TA = 0 to 70 °C,VCC = 3.3 ± 0.3 V
Parameter
Symbol
-50
min. max.
-60
min. max.
Unit Note
Fast Page Mode Read-Modify-Write Cycle
Fast page mode read-write cycle time tPRWC
73
â
CAS precharge to WE
tCPWD
50
â
82 â
57 â
ns 11
ns 11,21
CAS-before-RAS Refresh Cycle
CAS setup time
tCSR
7
â
CAS hold time
tCHR
8
â
RAS to CAS precharge time
tRPC
5
â
Write to RAS precharge time
tWRP
12 â
Write hold time referenced to RAS
tWRH
8
â
7
â
8
â
5
â
12 â
8
â
ns 11
ns 10
ns
ns 11
ns 10
Presence Detect Read Cycle
PDE to valid presence detect data
PDE inactive to presence detects
inactive
tPD
â
tPDOFF
0
10 â
10 0
10 ns
10 ns
Waveforms:
For waveforms see â168 pin fast-page mode DIMM modules waveformsâ
Semiconductor Group
9
|
▷ |