鈩?/div>
architecture for efficient bus operation
鈥?Fast clock speeds to 166 MHz
鈥?Fast clock to data access: 3.5/4.0 ns
鈥?Fast OE access time: 3.5/4.0 ns
鈥?Fully synchronous operation
鈥?Common data inputs and data outputs
鈥?Asynchronous output enable control
鈥?Available in100-pin TQFP
鈥?Byte write enables
鈥?Clock enable for operation hold
鈥?Multiple chip enables for easy expansion
鈥?3.3V core power supply
鈥?2.5V or 3.3V I/O operation with separate V
DDQ
鈥?Self-timed WRITE cycles
鈥?鈥淚nterleaved鈥?or 鈥淟inear burst鈥?modes
鈥?Snooze mode for standby operation
Logic block diagram
A[18:0]
19
D
Address
register
Burst logic
CLK
Q
19
D
CE0
CE1
CE2
R/W
BWa
BWb
ADV/LD
LBO
ZZ
CLK
Write delay
addr. registers
CLK
Q
19
Control
logic
CLK
Write Buffer
512K x 18
SRAM
Array
DQ [a:b]
18
D
Data
Q
Input
Register
CLK
18
18
18
18
CLK
CEN
CLK
Output
OE
Register
18
OE
DQ[a:b]
Selection Guide
-166
Minimum cycle time
Maximum clock frequency
Maximum clock access time
Maximum operating current
Maximum standby current
Maximum CMOS standby current (DC)
11/30/04
;
v.2.1
鈥?33
7.5
133
4
400
100
30
Units
ns
MHz
ns
mA
mA
mA
1 of 19
6
166
3.5
475
130
30
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