W9412G6IH-5 Winbond Electronics, W9412G6IH-5 Datasheet - Page 50

• Manufacturer Part Number: W9412G6IH-5
• Description: IC DDR-400 SDRAM 128MB 66TSSOPII
• Manufacturer: Winbond Electronics

Specifications of W9412G6IH-5

• Format - Memory: RAM
• Memory Type: DDR SDRAM
• Memory Size: 128M (8Mx16)
• Speed: 250MHz
• Interface: Parallel
• Voltage - Supply: 2.3 V ~ 2.7 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 66-TSOPII
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

11.23 Auto Refresh Cycle
Note: CKE has to be kept “High” level for Auto-Refresh cycle.
11.24 Precharged/Active Power Down Mode Entry and Exit Timing
Note:
1. If power down occurs when all banks are idle, this mode is referred to as precharge power down.
2. If power down occurs when there is a row active in any bank, this mode is referred to as active power down.
11.25 Input Clock Frequency Change during Precharge Power Down Mode Timing
CMD
CKE
CLK
CLK
t
RP
NOP
Minmum 2 clocks
required before
changing frequency
NOP
Frequency Change
Occurs here
Stable new clock
before power down exit
- 50 -
t
IS
NOP
Publication Release Date: Sep. 16, 2009
RESET
DLL
NOP
200 clocks
W9412G6IH
NOP
CMD
Revision A06