IS42S16400D-7TLI ISSI, Integrated Silicon Solution Inc, IS42S16400D-7TLI Datasheet - Page 10
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IS42S16400D-7TLI
Manufacturer Part Number
IS42S16400D-7TLI
Description
IC SDRAM 64MBIT 143MHZ 54TSOP
Manufacturer
ISSI, Integrated Silicon Solution Inc
Type
SDRAMr
Datasheet
1.IS42S16400D-7TL.pdf
(57 pages)
Specifications of IS42S16400D-7TLI
Format - Memory
RAM
Memory Type
SDRAM
Memory Size
64M (4M x 16)
Speed
143MHz
Interface
Parallel
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Package / Case
54-TSOP II
Organization
4Mx16
Density
64Mb
Address Bus
14b
Access Time (max)
6/5.4ns
Maximum Clock Rate
143MHz
Operating Supply Voltage (typ)
3.3V
Package Type
TSOP-II
Operating Temp Range
-40C to 85C
Operating Supply Voltage (max)
3.6V
Operating Supply Voltage (min)
3V
Supply Current
110mA
Pin Count
54
Mounting
Surface Mount
Operating Temperature Classification
Industrial
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
IS42S16400D-7TLI
Manufacturer:
ISSI
Quantity:
20 000
IS42S16400D
TRUTH TABLE – CURRENT STATE BANK n, COMMAND TO BANK m
NOTE:
10
3. Current state definitions:
1. This table applies when CKE n-1 was HIGH and CKE n is HIGH (Truth Table - CKE) and after t
2. This table describes alternate bank operation, except where noted; i.e., the current state is for bank n and the commands shown
4. AUTO REFRESH, SELF REFRESH and LOAD MODE REGISTER commands may only be issued when all banks are idle.
5. A BURST TERMINATE command cannot be issued to another bank; it applies to the bank represented by the current state only.
6. All states and sequences not shown are illegal or reserved.
CURRENT STATE
Any
Idle
Row
Activating,
Active, or
Precharging
Read
(Auto
Precharge
Disabled)
Write
(Auto
Precharge
Disabled)
Read
(With Auto
Precharge)
Write
(With Auto
Precharge)
state was self refresh).
are those allowed to be issued to bank m (assuming that bank m is in such a state that the given command is allowable). Exceptions are
covered in the notes below.
Precharge Enabled: Starts with registration of a READ command with auto precharge enabled, and ends when t
Precharge Enabled: Starts with registration of a WRITE command with auto precharge enabled, and ends when t
Read w/Auto
Write w/Auto
Row Active: A row in the bank has been activated, and t
Read: A READ burst has been initiated, with auto precharge disabled, and has not yet terminated or been terminated.
Write: A WRITE burst has been initiated, with auto precharge disabled, and has not yet terminated or been terminated.
Idle: The bank has been precharged, and t
accesses are in progress.
Once t
met. Once t
COMMAND (ACTION)
COMMAND INHIBIT (NOP/Continue previous operation)
NO OPERATION (NOP/Continue previous operation)
Any Command Otherwise Allowed to Bank m
ACTIVE (Select and activate row)
READ (Select column and start READ burst)
WRITE (Select column and start WRITE burst)
PRECHARGE
ACTIVE (Select and activate row)
READ (Select column and start new READ burst)
WRITE (Select column and start WRITE burst)
PRECHARGE
ACTIVE (Select and activate row)
READ (Select column and start READ burst)
WRITE (Select column and start new WRITE burst)
PRECHARGE
ACTIVE (Select and activate row)
READ (Select column and start new READ burst)
WRITE (Select column and start WRITE burst)
PRECHARGE
ACTIVE (Select and activate row)
READ (Select column and start READ burst)
WRITE (Select column and start new WRITE burst)
PRECHARGE
RP
is met, the bank will be in the idle state.
RP
is met, the bank will be in the idle state.
(9)
(9)
(9)
(9)
RP
has been met.
RCD
has been met. No data bursts/accesses and no register
Integrated Silicon Solution, Inc. — www.issi.com
(7)
(7,12)
(7,8,16)
(7)
(7,11)
(7,8,15)
(7,10)
(7,8,14)
(7,13)
(7,8,17)
XSR
(1-6)
has been met (if the previous
CS RAS CAS WE
H
X
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
X
H
X
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
RP
RP
has been met.
has been
H
H
H
H
H
H
H
H
H
H
H
X
X
L
L
L
L
L
L
L
L
L
L
11/21/07
Rev. E
X
H
X
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L