HANBiT
HMD4M64D16E
/RAS to column address delay time
/CAS to /RAS precharge time
Row address set-up time
tRAD
tCRP
tASR
tRAH
tASC
tCAH
tRRH
tRAL
tRCS
tRCH
tRRH
tWCH
tWP
15
5
25
15
5
30
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
ns
ns
ns
ns
ns
ns
0
0
Row address hold time
10
0
10
0
Column address set-up time
Column address hold time
8
10
0
Column address hold referenced to /RAS
Column Address to /RAS lead time
Read command set-up time
Read command hold referenced to /CAS
Read command hold referenced to /RAS
Write command hold time
0
25
0
30
0
0
0
0
0
10
10
13
8
10
10
15
10
0
Write command pulse width
Write command to /RAS lead time
Write command to /CAS lead time
Data-in set-up time
tRWL
tCWL
tDS
0
Data-in hold time
tDH
8
10
Refresh period
tREF
tWCS
tCWD
tRWD
tAWD
tCPWD
tCSR
32
32
Write command set-up time
/CAS to /W delay time
0
0
30
67
42
47
5
34
79
49
54
5
/RAS to /W delay time
Column address to /W delay time
/CAS precharge to /W delay time
/CAS setup time (/CAS-before /RAS
refresh)
/CAS hold time(/CAS-before-/RAS refresh)
/RAS to /CAS precharge time
Access time from /CAS precharge
Hyper page mode cycle time
Hyper page mode read-modify write cycle
time
tCHR
tRPC
10
5
10
5
ns
ns
ns
ns
ns
tCPA
28
35
tHPC
20
47
25
56
tHPRWC
/CAS precharge time(Hyper page cycle)
/RAS pulse width (Hyper page cycle)
/RAS hold time from /CAS precharge
/OE access time
tCP
tRASP
tRHCP
tOEA
tOED
tOEZ
8
10
60
35
ns
ns
ns
ns
ns
ns
50
30
200K
13
200K
15
/OE to date delay
13
3
15
3
Output buffer tune off delay time from /OE
13
15
URL:www.hbe.co.kr
REV.1.0 (August.2002)
- 6 -
HANBit Electronics Co.,Ltd.