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IDT70261S Fiches technique(PDF) 1 Page - Integrated Device Technology

No de pièce IDT70261S
Description  HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM WITH INTERRUPT
Download  19 Pages
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Fabricant  IDT [Integrated Device Technology]
Site Internet  http://www.idt.com
Logo IDT - Integrated Device Technology

IDT70261S Fiches technique(HTML) 1 Page - Integrated Device Technology

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©2000 Integrated Device Technology, Inc.
FEBRUARY 2000
DSC 3039/8
1
HIGH-SPEED
16K x 16 DUAL-PORT
STATIC RAM WITH INTERRUPT
Features
x
x
x
x
x
True Dual-Ported memory cells which allow simultaneous
access of the same memory location
x
x
x
x
x
High-speed access
– Commercial: 15/20/25/35/55ns (max.)
– Industrial 20/25/35/55ns (max.)
x
x
x
x
x
Low-power operation
– IDT70261S
Active: 750mW (typ.)
Standby: 5mW (typ.)
– IDT70261L
Active: 750mW (typ.)
Standby: 1mW (typ.)
x
x
x
x
x
Separate upper-byte and lower-byte control for multiplexed
bus compatibility
x
x
x
x
x
IDT70261 easily expands data bus width to 32 bits or more
using the Master/Slave select when cascading more than
one device
x
x
x
x
x
M/
S = H for BUSY output flag on Master,
M/
S = L for BUSY input on Slave
x
x
x
x
x
Busy and Interrupt Flags
x
x
x
x
x
On-chip port arbitration logic
x
x
x
x
x
Full on-chip hardware support of semaphore signaling
between ports
x
x
x
x
x
Fully asynchronous operation from either port
x
x
x
x
x
TTL-compatible, single 5V (±10%) power supply
x
x
x
x
x
Available in 100-pin Thin Quad Flatpack
x
x
x
x
x
Industrial temperature range (-40OC to +85OC) is available
for selected speeds
Functional Block Diagram
NOTES:
1. (MASTER):
BUSY is output; (SLAVE): BUSY is input.
2.
BUSY and INT outputs are non-tri-stated push-pull.
IDT70261S/L
I/O
Control
Address
Decoder
MEMORY
ARRAY
ARBITRATION
INTERRUPT
SEMAPHORE
LOGIC
Address
Decoder
I/O
Control
R/
WL
BUSYL
A13L
A0L
3039 drw 01
UBL
LBL
CEL
OEL
I/O8L-I/O15L
I/O0L-I/O7L
CEL
OEL
R/
WL
SEML
INTL
M/
S
R/
WR
BUSYR
UBR
LBR
CER
OER
I/O8R-I/O15R
I/O0R-I/O7R
A13R
A0R
R/
WR
SEMR
INTR
CER
OER
(2)
(1,2)
(1,2)
(2)
14
14


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