W9412G6IH-5 Winbond Electronics, W9412G6IH-5 Datasheet - Page 15

• 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

7.10.2 Addressing Mode Select (A3)
7.10.2.1. Addressing Sequence of Sequential Mode
7.10.2.2. Addressing Sequence for Interleave Mode
The Addressing Mode can be one of two modes; Interleave mode or Sequential Mode, When the
A3 bit is “0”, Sequential mode is selected. When the A3 bit is “1”, Interleave mode is selected. Both
addressing Mode support burst length 2, 4 and 8 words.
A column access is performed by incrementing the column address input to the device. The
address is varied by the Burst Length as the following.
A Column access is started from the inputted column address and is performed by interleaving the
address bits in the sequence shown as the following.
Data 0
Data 1
Data 2
Data 3
Data 4
Data 5
Data 6
Data 7
DATA
Data 0
Data 1
Data 2
Data 3
Data 4
Data 5
Data 6
Data 7
A3
DATA
0
1
ACCESS ADDRESS
A8 A7 A6 A5 A4 A3 A2 A1 A0
A8 A7 A6 A5 A4 A3 A2 A1 A0
A8 A7 A6 A5 A4 A3 A2 A1 A0
A8 A7 A6 A5 A4 A3 A2 A1 A0
A8 A7 A6 A5 A4 A3 A2 A1 A0
A8 A7 A6 A5 A4 A3 A2 A1 A0
A8 A7 A6 A5 A4 A3 A2 A1 A0
A8 A7 A6 A5 A4 A3 A2 A1 A0
n + 1
n + 2
n + 3
n + 4
n + 5
n + 6
n + 7
n
Addressing Sequence of Sequential Mode
Addressing Sequence of Interleave Mode
ACCESS ADDRESS
ADDRESSING MODE
- 15 -
8 words (address bits A2, A1 and A0)
Sequential
Interleave
4 words (address bit A0, A1)
2 words (address bits is A0)
Not carried from A1 to A2
Not carried from A2 to A3
not carried from A0 to A1
BURST LENGTH
Publication Release Date: Sep. 16, 2009
BURST LENGTH
W9412G6IH
2 words
4 words
8 words
Revision A06