Rainbow Electronics W9864G6GB - Manual (Page 16)

W9864G6GB
- 16 -
13. AC CHARACTERISTICS
(V
CC
= 2.7V~3.6V, V
SS
= 0V,T A = 0 to 70°C ) (Notes: 5, 6.)
-7
PARAMETER SYM.
MIN. MAX.
UNIT NOTE
Ref/Active to Ref/Active Command Period tRC 65
Active to precharge Command Period tRAS 45 100000
Active to Read/Write Command Delay
Time
tRCD 20
nS
Read/Write(a) to Read/Write(b) Command
Period
tCCD 1 tCK
Precharge to Active(b) Command Period tRP 20
Active(a) to Active(b) Command Period tRRD 14
nS
Write Recovery Time CL* = 2
CL* = 3
tWR 2 tCK
CLK Cycle Time CL* = 2 tCK 10 1000
CL* = 3 7 1000
CLK High Level tCH 2
CLK Low Level tCL 2
Access Time from CLK CL* = 2 tAC 6
CL* = 3 5.5
Output Data Hold Time tOH 2
Output Data High Impedance Time tHZ 2 7
Output Data Low Impedance Time tLZ 0
Power Down Mode Entry Time tSB 0 7
Transition Time of CLK (Rise and Fall) tT 0.5 5
Data-in-Set-up Time tDS 1.5
Data-in Hold Time tDH 1
Address Set-up Time tAS 1.5
Address Hold Time tAH 1
CKE Set-up Time tCKS 1.5
CKE Hold Time tCKH 1
Command Set-up Time tCMS 1.5
Command Hold Time tCMH 1
nS
Refresh Time tREF 64 mS
Mode Register Set Cycle Time tRSC 14 nS