IS42S16100E-6BLI-TR ISSI, IS42S16100E-6BLI-TR Datasheet - Page 28

• Manufacturer Part Number: IS42S16100E-6BLI-TR
• Description: DRAM 16M 1Mx16 166Mhz SDRAM, 3.3v
• Manufacturer: ISSI

Specifications of IS42S16100E-6BLI-TR

• Rohs: yes
• Data Bus Width: 16 bit
• Organization: 1 Mbit x 16
• Package / Case: BGA-60
• Memory Size: 16 Mbit
• Maximum Clock Frequency: 166 MHz
• Access Time: 6 ns
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 3 V
• Maximum Operating Current: 180 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Factory Pack Quantity: 1000

28
IS42S16100E, IS45S16100E
Read With Auto-Precharge
The read with auto-precharge command first executes a
burst read operation and then puts the selected bank in
the precharged state automatically. After the precharge
completes, the bank goes to the idle state. Thus this
command performs a read command and a precharge
command in a single operation.
During this operation, the delay period (t
last burst data output and the start of the precharge opera-
tion differs depending on the CAS latency setting.
When the CAS latency setting is two, the precharge opera-
tion starts on one clock cycle before the last burst data is
output (t
CAS latency = 3, burstlength = 4
CAS latency = 2, burstlength = 4
COMMAND
COMMAND
pql
READ WITH AUTO-PRECHARGE
READ WITH AUTO-PRECHARGE
CLK
CLK
= –1). When the CAS latency setting is
DQ
DQ
(BANK 0)
(BANK 0)
READA 0
READA 0
pql
D
) between the
OUT
PRECHARGE START
PRECHARGE START
0
D
D
OUT
OUT
0
1
three, the precharge operation starts on two clock cycles
before the last burst data is output (t
the selected bank can be made active after a delay of t
from the start position of this precharge operation.
The selected bank must be set to the active state before
executing this command.
The auto-precharge function is invalid if the burst length
is set to full page.
D
D
OUT
OUT
Integrated Silicon Solution, Inc. — www.issi.com
CAS Latency
t
PQL
1
2
t
pql
t
D
D
RP
OUT
OUT
t
PQL
2
3
t
RP
D
ACT 0
OUT
3
–2
3
pql
= –2). Therefore,
ACT 0
–1
2
05/18/2010
Rev. E
rp