IS42S32800B-6BL ISSI, Integrated Silicon Solution Inc, IS42S32800B-6BL Datasheet - Page 27

• Manufacturer Part Number: IS42S32800B-6BL
• Description: IC SDRAM 256MBIT 166MHZ 90BGA
• Manufacturer: ISSI, Integrated Silicon Solution Inc
• Type: SDRAMr

Specifications of IS42S32800B-6BL

• Format - Memory: RAM
• Memory Type: SDRAM
• Memory Size: 256M (8Mx32)
• Speed: 166MHz
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 90-BGA
• Organization: 8Mx32
• Density: 256Mb
• Address Bus: 14b
• Access Time (max): 5.5ns
• Maximum Clock Rate: 166MHz
• Operating Supply Voltage (typ): 3.3V
• Package Type: FBGA
• Operating Temp Range: 0C to 70C
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Supply Current: 180mA
• Pin Count: 90
• Mounting: Surface Mount
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

IS42S32800B
Integrated Silicon Solution, Inc.
Rev. F
07/21/09
Figure 4.Power on Sequene and Auto Refresh (CBR)
BS0, 1
DQM
CKE
RAS
ADD
CAS
CLK
A10
WE
DQ
CS
Hi-Z
Inputs
must
for 200us
be stable
T0 T1 T2 T3 T4 T5 T6 T7
High Level is Necessary
Precharge
Command
All Banks
High level
is required
t
RP
1st Auto
Refresh
Command
Minimum of 2 Refresh Cycles are required
T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
2nd Auto
Refresh
Command
t
RC
Mode
Set Command
Address Key
Register
t
MRS
Command
27