IS42S32800B-7BL INTEGRATED SILICON SOLUTION (ISSI), IS42S32800B-7BL Datasheet - Page 24

• 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
24
I
Timing Waveforms
Figure 1.AC Parameters for Write Timing (Burst Length=4,CAS#Latency=2)
ADDR.
BS0,1
RAS#
CAS#
DQM
CKE
CS#
WE#
CLK
DQ
Hi-Z
t
CH
T0
t
t
IS
IS
T1
t
CL
Command
Activate
Bank A
RBx
T2
t
t
IS
IH
t
RCD
t
t
CK2
Auto Precharge
IH
T3 T4 T5 T6 T7
Write with
Command
Bank A
CAx
Ax0 Ax1 Ax2
t
RC
Command
Activate
Bank B
RBx
Begin Auto Precharge
-5 ,
Ax3 Bx0
Auto Precharge
Write with
Command
Bank A
Bank B
CBx
t
DAL
T8
Bx1
, -7 ,
T9
Command
Activate
Bank A
RAy
Bx2
T10
Begin Auto Precharge
t
IS
Bx3
T11
Command
Bank B
Bank A
Write
Ay0 Ay1 Ay2 Ay3
CAy
T12
x
t
T13
IH
T14
T15 T16 T17 T18 T19
t
Precharge
Command
WR
Bank A
Integrated Silicon Solution, Inc.
x
t
RP
Command
Activate
Bank A
RAz
t
RRD
t
IS
Command
Activate
Bank B
RBy
T20
I
T21
T22
07/21/09
Rev. F
®