W9864G6 WINBOND [Winbond], W9864G6 Datasheet - Page 16

• Manufacturer Part Number: W9864G6
• Description: 1M x 4 BANKS x 16 BITS SDRAM
• Manufacturer: WINBOND [Winbond]

9. AC CHARACTERISTICS
(V
DD
Ref/Active to Ref/Active Command Period
Active to Precharge Command Period
Active to Read/Write Command Delay Time
Read/Write(a) to Read/Write(b)Command Period
Precharge to Active(b) Command Period
Active(a) to Active(b) Command Period
Write Recovery Time
CLK Cycle Time
CLK High Level
CLK Low Level
Access Time from CLK
Output Data Hold Time
Output Data High Impedance Time
Output Data Low Impedance Time
Power Down Mode Entry Time
Transition Time of CLK (Rise and Fall)
Data-in-Set-up Time
Data-in Hold Time
Address Set-up Time
Address Hold Time
CKE Set-up Time
CKE Hold Time
Command Set-up Time
Command Hold Time
Refresh Time
Mode Register Set Cycle Time
= 3.6V − 2.7V, V
SS
PARAMETER
= 0V, T
A
= 0 to 70 °C) (Notes: 5, 6.)
CL* = 2
CL* = 3
CL* = 2
CL* = 3
CL* = 2
CL* = 3
- 16 -
SYMBOL
tCMH
tRCD
tCCD
tRRD
tCKH
tCMS
tRSC
tRAS
tCKS
tREF
tWR
tRC
tCH
tOH
tDH
tRP
tCK
tAC
tHZ
tSB
tDS
tAS
tAH
tCL
tLZ
tT
MIN.
0.5
1.5
1.5
1.5
1.5
65
45
20
20
14
14
1
8
7
8
7
2
2
3
3
0
0
1
1
1
1
-7
W9864G6DB
100000
MAX.
1000
1000
5.5
10
64
6
7
7
Cycle
UNIT
mS
nS
nS
nS