IS42S32400E-7B-TR ISSI, Integrated Silicon Solution Inc, IS42S32400E-7B-TR Datasheet - Page 20

• Manufacturer Part Number: IS42S32400E-7B-TR
• Manufacturer: ISSI, Integrated Silicon Solution Inc
• Type: SDRAMr

Specifications of IS42S32400E-7B-TR

• Organization: 4Mx32
• Density: 128Mb
• Address Bus: 14b
• Access Time (max): 6.5/5.4ns
• Maximum Clock Rate: 143MHz
• Operating Supply Voltage (typ): 3.3V
• Package Type: TFBGA
• Operating Temp Range: 0C to 70C
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Supply Current: 130mA
• Pin Count: 90
• Mounting: Surface Mount
• Operating Temperature Classification: Commercial
• Lead Free Status / Rohs Status: Not Compliant

IS42S32400E, IS45S32400E
INITIALIzE AND LOAD MODE REGISTER
20
DQM0-DQM3
Notes:
1. If CS is High at clock High time, all commands applied are NOP.
2. The Mode register may be loaded prior to the Auto-Refresh cycles if desired.
3. JEDEC and PC100 specify three clocks.
4. Outputs are guaranteed High-Z after the command is issued.
COMMAND
A0-A9, A11
BA0, BA1
CKE
CLK
A10
DQ
Power-up: V
and CLK stable
T = 100µs Min.
t
t
CKS
CMS
NOP
T
T0
t
t
CKH
CMH
t
CK
CC
SINGLE BANK
ALL BANKS
t
CMS
PRECHARGE
ALL BANKS
T1
Precharge
all banks
t
CMH
t
RP
t
CMS
REFRESH
Tn+1
AUTO
AUTO REFRESH
t
CMH
t
CH
NOP
t
RC
(1)
t
CL
REFRESH
To+1
AUTO
AUTO REFRESH
NOP
t
RC
t
t
t
Load MODE
REGISTER
AS
AS
AS
CODE
CODE
CODE
Tp+1
Program MODE REGISTER
Integrated Silicon Solution, Inc. - www.issi.com
t
t
t
AH
AH
AH
Tp+2
t
NOP
MRD
DON'T CARE
ACTIVE
BANK
ROW
ROW
Tp+3
(2, 3, 4)
10/28/10
Rev. E