IS42S16400F-5TL-TR ISSI, Integrated Silicon Solution Inc, IS42S16400F-5TL-TR Datasheet - Page 34
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IS42S16400F-5TL-TR
Manufacturer Part Number
IS42S16400F-5TL-TR
Description
IC SDRAM 64MBIT 200MHZ 54TSOP
Manufacturer
ISSI, Integrated Silicon Solution Inc
Type
SDRAMr
Datasheet
1.IS42S16400F-7TL.pdf
(59 pages)
Specifications of IS42S16400F-5TL-TR
Format - Memory
RAM
Memory Type
SDRAM
Memory Size
64M (4M x 16)
Speed
200MHz
Interface
Parallel
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
0°C ~ 70°C
Package / Case
54-TSOP II
Organization
4Mx16
Density
64Mb
Address Bus
14b
Access Time (max)
6/5ns
Maximum Clock Rate
200MHz
Operating Supply Voltage (typ)
3.3V
Package Type
TSOP-II
Operating Temp Range
0C to 70C
Operating Supply Voltage (max)
3.6V
Operating Supply Voltage (min)
3V
Supply Current
140mA
Pin Count
54
Mounting
Surface Mount
Operating Temperature Classification
Commercial
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
IS42S16400F
IS45S16400F
CLOCK SUSPEND
Clock suspend mode occurs when a column access/burst
is in progress and CKE is registered LOW. In the clock
suspend mode, the internal clock is deactivated, “freezing”
the synchronous logic.
For each positive clock edge on which CKE is sampled
LOW, the next internal positive clock edge is suspended.
Any command or data present on the input pins at the time
Clock Suspend During WRITE Burst
Clock Suspend During READ Burst
34
INTERNAL
COMMAND
ADDRESS
CLOCK
INTERNAL
COMMAND
CKE
ADDRESS
CLK
DQ
CLOCK
CKE
CLK
DQ
READ
BANK a,
COL n
T0
NOP
T0
NOP
T1
WRITE
BANK a,
COL n
D
T1
IN
n
NOP
T2
D
OUT
T2
n
T3
of a suspended internal clock edge is ignored; any data
present on the DQ pins remains driven; and burst counters
are not incremented, as long as the clock is suspended.
(See following examples.)
Clock suspend mode is exited by registering CKE HIGH;
the internal clock and related operation will resume on the
subsequent positive clock edge.
Integrated Silicon Solution, Inc. — www.issi.com
D
T3
OUT
n+1
NOP
T4
D
NOP
IN
T4
n+1
NOP
D
T5
OUT
D
DON'T CARE
n+2
NOP
IN
T5
n+2
DON'T CARE
NOP
D
T6
OUT
n+3
07/28/2010
Rev. H