參數(shù)資料
型號(hào): IDT70V28L
廠商: Integrated Device Technology, Inc.
英文描述: HIGH-SPEED 3.3V 64K x 16 DUAL-PORT STATIC RAM
中文描述: 高速3.3 64K的× 16 DUAL-PORT靜態(tài)RAM
文件頁(yè)數(shù): 1/17頁(yè)
文件大?。?/td> 152K
代理商: IDT70V28L
2002 Integrated Device Technology, Inc.
1
DSC-4849/3
I/O
Control
Address
Decoder
64Kx16
MEMORY
ARRAY
70V28
ARBITRATION
INTERRUPT
SEMAPHORE
LOGIC
CE
0L
CE
1L
OE
L
R/
W
L
A
15L
A
0L
SEM
L
INT
L
(2)
BUSY
L
(1,2)
LB
L
CE
0L
CE
1L
OE
L
UB
L
I/O
Control
Address
Decoder
CE
0R
CE
1R
OE
R
R/
W
R
A
15R
A
0R
SEM
R
INT
R
(2)
BUSY
R
(1,2)
LB
R
R/
W
R
UB
R
OE
R
M/
S
(1)
CE
0R
CE
1R
4849 drw 01
I/O
8-15L
I/O
I/O
0-7R
I/O
8-15R
0-7L
R/
W
L
16
16
N
M/
S
= V
IH
for
BUSY
output flag on Master,
M/
S
= V
IL
for
BUSY
input on Slave
N
Busy and Interrupt Flags
N
On-chip port arbitration logic
N
Full on-chip hardware support of semaphore signaling
between ports
N
Fully asynchronous operation from either port
N
Separate upper-byte and lower-byte controls for multi-
plexed bus and bus matching compatibility
N
LVTTL-compatible, single 3.3V (±0.3V) power supply
N
Available in a 100-pin TQFP
N
Industrial temperature range (–40°C to +85°C) is available
for selected speeds
N
True Dual-Ported memory cells which allow simultaneous
access of the same memory location
N
High-speed access
– Commercial: 15/20ns (max.)
– Industrial: 20ns (max.)
N
Low-power operation
– IDT70V28L
Active: 440mW (typ.)
Standby: 660μW (typ.)
N
Dual chip enables allow for depth expansion without
external logic
N
IDT70V28 easily expands data bus width to 32 bits or
more using the Master/Slave select when cascading more
than one device
HIGH-SPEED 3.3V
64K x 16 DUAL-PORT
STATIC RAM
IDT70V28L
NOTES:
1.
2.
BUSY
is an input as a Slave (M/
S
=V
IL
) and an output when it is a Master (M/
S
=V
IH
).
BUSY
and
INT
are non-tri-state totem-pole outputs (push-pull).
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