IDT7026L IDT [Integrated Device Technology], IDT7026L Datasheet

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IDT7026L

Manufacturer Part Number
IDT7026L
Description
HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM
Manufacturer
IDT [Integrated Device Technology]
Datasheet

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FEATURES:
• True Dual-Ported memory cells which allow simulta-
• High-speed access
• Low-power operation
• Separate upper-byte and lower-byte control for
FUNCTIONAL BLOCK DIAGRAM
NOTES:
1. (MASTER):
2.
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1996 Integrated Device Technology, Inc.
Integrated Device Technology, Inc.
neous access of the same memory location
— Military: 25/35/55ns (max.)
— Commercial: 20/25/35/55ns (max.)
— IDT7026S
— IDT7026L
multiplexed bus compatibility
BUSY
Active: 750mW (typ.)
Standby: 5mW (typ.)
Active: 750mW (typ.)
Standby: 1mW (typ.)
outputs are non-tri-stated push-pull.
I/O
I/O
8L
BUSY
BUSY
0L
-I/O
SEM
R/
-I/O
UB
A
OE
CE
LB
A
W
15L
13L
L
(1,2)
0L
L
7L
is output; (SLAVE):
L
L
L
L
L
For latest information contact IDT’s web site at www.idt.com or fax-on-demand at 408-492-8391.
Decoder
Address
BUSY
CE
L
is input.
HIGH-SPEED
16K x 16 DUAL-PORT
STATIC RAM
1 4
Control
I/O
ARBITRATION
SEMAPHORE
MEMORY
ARRAY
LOGIC
6.17
M/
S
• IDT7026 easily expands data bus width to 32 bits or
• M/
• On-chip port arbitration logic
• Full on-chip hardware support of semaphore signaling
• Fully asynchronous operation from either port
• TTL-compatible, single 5V ( 10%) power supply
• Available in 84-pin PGA and 84-pin PLCC
• Industrial temperature range (–40 C to +85 C) is avail-
more using the Master/Slave select when cascading
more than one device
M/
between ports
able, tested to military electrical specifications
S
S
Control
= H for
= L for
I/O
1 4
BUSY
BUSY
Decoder
Address
input on Slave
CE
output flag on Master,
R
2939 drw 01
SEM
I/O
BUSY
R/
I/O
UB
CE
OE
LB
A
A
13R
OCTOBER 1996
0R
W
IDT7026S/L
R
8R
R
0R
R
R
R
R
-I/O
-I/O
R
(1,2)
15R
7R
DSC 2939/3
1

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IDT7026L Summary of contents

Page 1

... High-speed access — Military: 25/35/55ns (max.) — Commercial: 20/25/35/55ns (max.) • Low-power operation — IDT7026S Active: 750mW (typ.) Standby: 5mW (typ.) — IDT7026L Active: 750mW (typ.) Standby: 1mW (typ.) • Separate upper-byte and lower-byte control for multiplexed bus compatibility FUNCTIONAL BLOCK DIAGRAM W ...

Page 2

IDT7026S/L HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM DESCRIPTION: The IDT7026 is a high-speed 16K x 16 Dual-Port Static RAM. The IDT7026 is designed to be used as a stand-alone Dual-Port RAM combination MASTER/SLAVE Dual- Port RAM ...

Page 3

IDT7026S/L HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM PIN CONFIGURATIONS (CONT' I/O I I/O I/O 10L I/O I/O 11L I/O I/O 13L 12L 72 ...

Page 4

IDT7026S/L HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM TRUTH TABLE I – NON-CONTENTION READ/WRITE CONTROL (1) Inputs ...

Page 5

... > 0. < 0.2V IN Active Port Outputs Open, ( MAX = 120mA (Typ.) CCDC 6.17 MILITARY AND COMMERCIAL TEMPERATURE RANGES (V = 5.0V 10%) CC IDT7026S IDT7026L Min. Max. Min. — 10 — CC — 10 — — 0.4 — 2.4 — 2.4 ( 5.0V 10%) CC 7026X20 Com'l. Only (2) Version Typ. ...

Page 6

IDT7026S/L HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM DC ELECTRICAL CHARACTERISTICS OVER THE OPERATING TEMPERATURE AND SUPPLY VOLTAGE RANGE Symbol Parameter I Dynamic Operating CC Current (Both Ports Active) I Standby Current SB1 (Both Ports — TTL Level Inputs) I ...

Page 7

IDT7026S/L HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM AC TEST CONDITIONS Input Pulse Levels Input Rise/Fall Times Input Timing Reference Levels Output Reference Levels Output Load AC ELECTRICAL CHARACTERISTICS OVER THE OPERATING TEMPERATURE AND SUPPLY VOLTAGE RANGE Symbol Parameter READ ...

Page 8

IDT7026S/L HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM WAVEFORM OF READ CYCLES ADDR DATA OUT BUSY OUT NOTES: 1. Timing depends on which signal is asserted last, 2. Timing depends on which signal ...

Page 9

IDT7026S/L HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM AC ELECTRICAL CHARACTERISTICS OVER THE OPERATING TEMPERATURE AND SUPPLY VOLTAGE Symbol Parameter WRITE CYCLE t Write Cycle Time WC t Chip Enable to End-of-Write EW t Address Valid to End-of-Write AW (3) ...

Page 10

IDT7026S/L HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM TIMING WAVEFORM OF WRITE CYCLE NO ADDRESS OE ( SEM ( ( DATA (4) OUT DATA IN TIMING WAVEFORM OF WRITE ...

Page 11

IDT7026S/L HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM TIMING WAVEFORM OF SEMAPHORE READ AFTER WRITE TIMING, EITHER SIDE VALID ADDRESS t AW SEM I NOTES ...

Page 12

IDT7026S/L HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM AC ELECTRICAL CHARACTERISTICS OVER THE OPERATING TEMPERATURE AND SUPPLY VOLTAGE RANGE Symbol Parameter BUSY TIMING ( BUSY t Access Time from Address Match ...

Page 13

IDT7026S/L HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM TIMING WAVEFORM OF WRITE WITH PORT-TO-PORT READ AND ADDR "A" "A" DATA IN "A" (1) t APS ADDR "B" BUSY "B" DATA OUT "B" NOTES ensure that the ...

Page 14

IDT7026S/L HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM WAVEFORM OF BUSY ARBITRATION CONTROLLED BY ADDR "A" and "B" CE "A" (2) t APS CE "B" BUSY "B" WAVEFORM OF BUSY ARBITRATION CYCLE CONTROLLED BY ADDRESS MATCH TIMING ...

Page 15

IDT7026S/L HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM TRUTH TABLE IV — ADDRESS BUSY ARBITRATION Inputs Outputs 13L BUSY BUSY BUSY BUSY BUSY ( ...

Page 16

IDT7026S/L HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM CMOS Static RAM and can be read from, or written to, at the same time with the only possible conflict arising from the simultaneous writing of simultaneous READ/WRITE of, a ...

Page 17

IDT7026S/L HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM L PORT SEMAPHORE REQUEST FLIP FLOP REQUEST FLIP FLOP WRITE SEMAPHORE READ Figure 4. IDT7026 Semaphore Logic one is written to the same semaphore request latch. Should the ...

Page 18

IDT7026S/L HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM ORDERING INFORMATION IDT XXXXX A 999 Device Power Speed Type A A Package Process/ Temperature Range Blank 7026 6.17 MILITARY AND COMMERCIAL TEMPERATURE ...

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