IS43R32800B-5BL-TR ISSI, Integrated Silicon Solution Inc, IS43R32800B-5BL-TR Datasheet - Page 36

• Manufacturer Part Number: IS43R32800B-5BL-TR
• Description: IC DDR SDRAM 256MBIT 144BGA
• Manufacturer: ISSI, Integrated Silicon Solution Inc
• Type: DDR SDRAMr

Specifications of IS43R32800B-5BL-TR

• Format - Memory: RAM
• Memory Type: DDR SDRAM
• Memory Size: 256M (8Mx32)
• Speed: 200MHz
• Interface: Parallel
• Voltage - Supply: 2.4 V ~ 2.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 144-BGA
• Organization: 8Mx32
• Density: 256Mb
• Address Bus: 14b
• Access Time (max): 700ps
• Maximum Clock Rate: 400MHz
• Operating Supply Voltage (typ): 2.5V
• Package Type: Mini BGA
• Operating Temp Range: 0C to 70C
• Operating Supply Voltage (max): 2.7V
• Operating Supply Voltage (min): 2.3V
• Supply Current: 400mA
• Pin Count: 144
• Mounting: Surface Mount
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

IS43R32800B
36
S ELF
Self -refresh mode is entered by issuing a REF S command (/CS=/RA S=/CAS =L ,/WE =H,C KE =L ).
Once the self-refresh is initiated, it is maintained as long as C KE is kept low. During the self-
refresh mode, CK E i s asynchronous and the only enable input , all other inputs including CL K a re
disabled and ignored, so that power consumption dueto synchronous inputs is saved. T o exit the
self-refresh, supplying stable CLK inputs, asserting DESEL or NOP command and then asserting
CK E f or longer than tX SNR/ tXSRD.
BA 0,1
A0-1 1
/RAS
/CAS
/CLK
CL K
CK E
REFRESH
/WE
/CS
Self Refresh Exit
Self-R efresh
Integrated Silicon Solution, Inc. — www.issi.com
tX SN R
X
X
tX SR D
Y
Y
Rev. 00D
03/19/08