Rainbow Electronics W9825G6CH - Manual (Page 7)

W9825G6CH
Publication Release Date: Oct. 2004
- 7 - Revision A2
PARAMETER SYM. -6 UNIT
MIN. MAX.
Ref/Active to Ref/Active Command Period t
RC
60 nS
Active to precharge Command Period t
RAS
42 100000 nS
Active to Read/Write Command Delay Time t
RCD
18 nS
Read/Write(a) to Read/Write(b) Command
Period t
CCD
1 tCK
Precharge to Active Command Period t
RP
18 nS
Active(a) to Active(b) Command Period t
RRD
12 nS
Write Recovery Time CL* = 2 t
WR
2 tCK
CL* = 3 2 tCK
CLK Cycle Time CL* = 2 t
CK
7.5 1000 nS
CL* = 3 6 1000 nS
CLK High Level Width t
CH
2.5 nS
CLK Low Level Width t
CL
2.5 nS
Access Time from CLK CL* = 2 t
AC
5.4 nS
CL* = 3 5.4 nS
Output Data Hold Time t
OH
3 nS
Output Data High Impedance Time t
HZ
3 7 nS
Output Data Low Impedance Time t
LZ
0 nS
Power Down Mode Entry Time t
SB
0 7 nS
Transition Time of CLK
(Rise and Fall) t
T
0.5 10 nS
Data-in Set-up Time t
DS
1.5 nS
Data-in Hold Time t
DH
0.8 nS
Address Set-up Time t
AS
1.5 nS
Address Hold Time t
AH
0.8 nS
CKE Set-up Time t
CKS
1.5 nS
CKE Hold Time t
CKH
0.8 nS
Command Set-up Time t
CMS
1.5 nS
Command Hold Time t
CMS
0.8 nS
Refresh Time t
REF
64 mS
Mode register Set Cycle Time t
RSC
12 nS