IS42S32800B-7BL INTEGRATED SILICON SOLUTION (ISSI), IS42S32800B-7BL Datasheet - Page 44

• Manufacturer Part Number: IS42S32800B-7BL
• Description: IC, SDRAM, 256MBIT, 143MHZ, BGA-90
• Manufacturer: INTEGRATED SILICON SOLUTION (ISSI)

Specifications of IS42S32800B-7BL

• Memory Type: DRAM - Sychronous
• Access Time: 7ns
• Page Size: 256Mbit
• Ic Interface Type: Parallel
• Memory Case Style: BGA
• No. Of Pins: 90
• Operating Temperature Range: 0°C To +70°C
• Termination Type: SMD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

IS42S32800B
44
Figure 14.3.Interleaved Column Read Cycle (Burst Length=4,CAS#Latency=3)
BS0,1
CAS#
A0-A9
DQM
RAS#
WE#
CKE
CLK
CS#
A10
DQ Hi-Z
T0 T 1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T 11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
Command
Activate
Bank A
RAx
RAx
t
CK3
t
RCD
Command
Bank A
Read
CAx
Command
Activate
Bank B
RBx
RBx
t
AC3
Ax0 Ax1
Command
Bank B
Read
CBx
Ax2
Command
Bank B
Read
CBy
Ax3
Bx0
Command
Bank B
Read
CBz
Bx1
By0
Command
Bank A
Read
CAy
By1
Bz0
Precharge
Command
Bank B
Integrated Silicon Solution, Inc.
Bz1 A y0
Precharge
Command
Bank A
Ay1
Ay 2
Ay 3
07/21/09
Rev. F