IS43R32400A-6B ISSI, Integrated Silicon Solution Inc, IS43R32400A-6B Datasheet - Page 8

• Manufacturer Part Number: IS43R32400A-6B
• Manufacturer: ISSI, Integrated Silicon Solution Inc
• Type: DDR SDRAMr

Specifications of IS43R32400A-6B

• Organization: 4Mx32
• Density: 128Mb
• Address Bus: 14b
• Access Time (max): 850ps
• Maximum Clock Rate: 166MHz
• Operating Supply Voltage (typ): 2.5V
• Package Type: FBGA
• Operating Temp Range: 0C to 70C
• Operating Supply Voltage (max): 2.625V
• Operating Supply Voltage (min): 2.375V
• Supply Current: 420mA
• Pin Count: 144
• Mounting: Surface Mount
• Operating Temperature Classification: Commercial
• Lead Free Status / Rohs Status: Not Compliant

IS43R32400A
DETAILED COMMAND TRUTH TABLE - DIFFERENT BANKS (bank b, then bank g)
Note:
1. A Write command may be terminated only at the completion of the Read burst. However, a Burst Terminate can be transmitted
DETAILED COMMAND TRUTH TABLE - LOW POWER MODES
8
Function (n)
Maintain Power Down
Maintain Self Refresh
Exit Power Down
Exit Self Refresh Mode Deselect or NOP
Enter Pre-Charge
Power Down Mode
Enter Active Power
Down Mode
Enter Self Refresh
Mode
Function (n)
Start Pre-charge
to end the Read burst early so that a Write command can be asserted.
Command (n)
don’t care
don’t care
Deselect or NOP
Deselect or NOP
Deselect or NOP
Auto Refresh
Command (n)
Pre-charge
Pre-charge
Pre-charge
Pre-charge
Pre-charge
All Banks Idle
All Banks Idle
Prior State (n - 1)
Power Down Mode
Self Refresh Mode
Power Down
Self Refresh Mode
Bank(s) Active
Prior State (n - 1) CKE (n - 1) CKE (n) CS
Row in bank b active,
activating, or
pre-charging
Read underway in
bank b (Auto Pre-
charge disabled)
Write underway in
bank b (Auto Pre-
charge disabled)
Read underway in
bank b (Auto Pre-
charge enabled)
Write underway in
bank b (Auto Pre-
charge enabled)
Integrated Silicon Solution, Inc. — 1-800-379-4774
CKE (n - 1) CKE (n)
H
H
H
L
L
L
L
H
H
H
H
H
H
H
L
L
L
L
L
H
H
H
H
H
CS
CS
CS
CS
CS
CS
CS
CS
CS
X
X
X
X
X
X
L
L
L
L
L
L
-cont.
RAS
RAS
RAS
RAS
RAS
RAS
RAS
RAS
RAS
RAS CAS
L
L
L
L
L
X
X
X
X
X
X
L
ISSI
CAS
CAS
CAS
CAS
CAS
CAS WE
CAS
CAS
CAS WE
H
H
H
H
H
X
X
X
X
X
X
L
Rev. 00D
02/15/06
WE
WE
WE
WE
WE
WE
WE
WE
H
X
X
X
X
X
X
L
L
L
L
L
®