MT57V256H36E Micron Semiconductor Products, Inc., MT57V256H36E Datasheet - Page 7

• Manufacturer Part Number: MT57V256H36E
• Description: 9Mb DDR SRAM 2.5V Vdd, HSTL Pipelined
• Manufacturer: Micron Semiconductor Products, Inc.

Table 5:
Notes 1-7
NOTE:
256K x 36 2.5V V
MT57V256H36E_16_B.fm - Rev. B, Pub. 1/03
1. X means “Don’t Care.” H means logic HIGH. L means logic LOW. ­ means rising edge; ¯ means falling edge.
2. Data inputs are registered at K and K# rising edges. Data outputs are delivered at C and C# rising edges, except if C
3. All control inputs in the truth table must meet setup and hold times around the rising edge (LOW to HIGH) of K. All
4. This device contains circuitry that will ensure the outputs will be in High-Z during power-up.
5. Refer to state diagram and timing diagrams for clarification.
6. A1 refers to the address input during a WRITE or READ cycle. A2, A3, and A4 refer to the next internal burst address
7. It is recommended that K = /K# = C =/ C# when clock is stopped. This is not essential, but permits most rapid restart
OPERATION
WRITE Cycle:
Load address, input write data on two
consecutive K and K# rising edges
READ Cycle:
Load address, read data on two
consecutive C and C# rising edges
NOP: No operation
STANDBY: Clock stopped
and C# are HIGH, then data outputs are delivered at K and K# rising edges.
control inputs are registered during the rising edge of K.
in accordance with the burst sequence.
by overcoming transmission line charging symmetrically.
DD
, HSTL, Pipelined DDR SRAM
Truth Table
LD# R/W#
H
X
L
L
0.16µm Process
H
X
X
L
2.5V V
Stopped
L®H
L®H
L®H
K
7
DD
K(t + 1 )­
Q
C(t + 1)­
Previous
D
High-Z
Micron Technology, Inc., reserves the right to change products or specifications without notice.
OUT
, HSTL, PIPELINED DDR SRAM
State
IN
DQ
at
at
(A1)
(A1)
K#(t + 1)­
C#(t + 1)­
Q
Previous
D
High-Z
OUT
State
IN
DQ
at
at
(A2)
(A2)
Q
K(t + 2)­
C(t + 2)­
Previous
D
High-Z
OUT
State
IN
DQ
at
at
(A3)
(A3)
256K x 36
©2003, Micron Technology Inc.
ADVANCE
K#(t + 2)­
C#(t + 2)­
Q
Previous
D
High-Z
OUT
State
IN
DQ
at
at
(A4)
(A4)