IS42S32800B-7BL ISSI, Integrated Silicon Solution Inc, IS42S32800B-7BL Datasheet - Page 16

• Manufacturer Part Number: IS42S32800B-7BL
• Description: IC SDRAM 256MBIT 143MHZ 90BGA
• Manufacturer: ISSI, Integrated Silicon Solution Inc
• Type: SDRAMr

Specifications of IS42S32800B-7BL

• Package / Case: 90-BGA
• Memory Size: 256M (8Mx32)
• Format - Memory: RAM
• Memory Type: SDRAM
• Speed: 143MHz
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Data Bus Width: 32 bit
• Organization: 2 Mbit x 32
• Maximum Clock Frequency: 143 MHz
• Access Time: 7 ns
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Maximum Operating Current: 150 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Density: 256Mb
• Address Bus: 14b
• Access Time (max): 5.5ns
• Maximum Clock Rate: 143MHz
• Operating Supply Voltage (typ): 3.3V
• Package Type: BGA
• Operating Temp Range: 0C to 70C
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Supply Current: 150mA
• Pin Count: 90
• Mounting: Surface Mount
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 706-1024

I
IS42S32800B
16
¡D
¡D
¡D
¡D
¡D
CAS#
ADDR.
RAS#
DQM
CKE
CS#
WE#
CLK
Burst Length Field (A2~A0)
This field specifies the data length of column access using the A2~A0 pins and selects the Burst Length to be 2,
4,8,or full page.
DQ
*Note:RFU (Reserved for future use)should stay 0 during MRS cycle.
The mode register is divided into various fields depending on functionality.
Function
Address BS0,1 A11/A10
Hi-Z
A2
0
0
0
0
1
1
1
1
T0
RFU*
A1
0
0
1
1
0
0
1
1
t CK2
T1
Precharge All
0
1
0
1
1
0
1
A0
0
WBL
A9
T2
Burst Length
1
2
4
8
Reserved
Reserved
Reserved
Full Page
t
Mode Register
Address Key
RP
Set Command
Mode Register Set Cycle
Test Mode
A8
T3
Clock min.
A7
T4
Any
Command
A6
T5
CAS Latency
A5
T6
A4
T7
A3
BT
T8
Integrated Silicon Solution, Inc.
A2
T9
Burst Length
A1
T10
I
A0
07/21/09
Rev. F
®