IDT70V28L15PFI Integrated Device Technology, IDT70V28L15PFI Datasheet

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IDT70V28L15PFI

Manufacturer Part Number
IDT70V28L15PFI
Description
HIGH-SPEED 3.3V 64K x 16 DUAL-PORT STATIC RAM
Manufacturer
Integrated Device Technology
Datasheet
©2002 Integrated Device Technology, Inc.
NOTES:
1. BUSY is an input as a Slave (M/S=V
2. BUSY and INT are non-tri-state totem-pole outputs (push-pull).
True Dual-Ported memory cells which allow simultaneous
access of the same memory location
High-speed access
– Commercial: 15/20ns (max.)
– Industrial: 20ns (max.)
Low-power operation
– IDT70V28L
Dual chip enables allow for depth expansion without
external logic
IDT70V28 easily expands data bus width to 32 bits or
more using the Master/Slave select when cascading more
than one device
I/O
Active: 440mW (typ.)
Standby: 660µW (typ.)
BUSY
I/O
SEM
R/
CE
CE
8-15L
INT
A
OE
UB
LB
0-7L
A
15L
W
0L
0L
1L
L
L
L
L
L
L
L
(1,2)
(2)
IL
Decoder
Address
) and an output when it is a Master (M/S=V
R/W
CE
CE
OE
0L
1L
L
L
16
HIGH-SPEED 3.3V
64K x 16 DUAL-PORT
STATIC RAM
Control
I/O
ARBITRATION
SEMAPHORE
INTERRUPT
MEMORY
ARRAY
64Kx16
70V28
LOGIC
M/S
IH
1
).
(1)
M/S = V
M/S = V
Busy and Interrupt Flags
On-chip port arbitration logic
Full on-chip hardware support of semaphore signaling
between ports
Fully asynchronous operation from either port
Separate upper-byte and lower-byte controls for multi-
plexed bus and bus matching compatibility
LVTTL-compatible, single 3.3V (±0.3V) power supply
Available in a 100-pin TQFP
Industrial temperature range (–40°C to +85°C) is available
for selected speeds
Control
I/O
IL
IH
for BUSY input on Slave
for BUSY output flag on Master,
16
Decoder
Address
CE
CE
OE
R/W
0R
1R
R
R
4849 drw 01
IDT70V28L
R/
UB
CE
CE
OE
LB
BUSY
A
A
SEM
INT
I/O
I/O
15R
0R
W
R
R
0R
1R
R
R
R
8-15R
0-7R
R
(2)
DSC-4849/3
R
(1,2)

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IDT70V28L15PFI Summary of contents

Page 1

... INT L NOTES: 1. BUSY is an input as a Slave (M/S=V ) and an output when Master (M/S BUSY and INT are non-tri-state totem-pole outputs (push-pull). ©2002 Integrated Device Technology, Inc. HIGH-SPEED 3.3V 64K x 16 DUAL-PORT STATIC RAM for BUSY output flag on Master, M for BUSY input on Slave ...

Page 2

IDT70V28L High-Speed 3.3V 64K x 16 Dual-Port Static RAM The IDT70V28 is a high-speed 64K x 16 Dual-Port Static RAM. The IDT70V28 is designed to be used as a stand-alone 1024K-bit Dual-Port RAM combination MASTER/SLAVE Dual-Port RAM ...

Page 3

IDT70V28L High-Speed 3.3V 64K x 16 Dual-Port Static RAM Left Port Right Port Chip Enables R/W R/W Read/Write Enable Output Enable ...

Page 4

IDT70V28L High-Speed 3.3V 64K x 16 Dual-Port Static RAM < 0. >V -0.2V CC (3) X NOTES: 1. Chip Enable references are shown above with the actual CE 2. 'H' ...

Page 5

IDT70V28L High-Speed 3.3V 64K x 16 Dual-Port Static RAM Symbol Parameter ( Input Leakage Current Output Leakage Current LO V Output Low Voltage OL V Output High Voltage OH NOTES: < Vcc 2.0V, ...

Page 6

IDT70V28L High-Speed 3.3V 64K x 16 Dual-Port Static RAM Input Pulse Levels Input Rise/Fall Times Input Timing Reference Levels Output Reference Levels Output Load ADDR ( UB, LB R/W DATA OUT BUSY OUT CE ( ...

Page 7

IDT70V28L High-Speed 3.3V 64K x 16 Dual-Port Static RAM Symbol READ CYCLE t Read Cycle Time RC t Address Access Time AA (3) t Chip Enable Access Time ACE (3) t Byte Enable Access Time ABE t Output Enable Access ...

Page 8

IDT70V28L High-Speed 3.3V 64K x 16 Dual-Port Static RAM ADDRESS OE (9,10 SEM ( ( R/W DATA OUT DATA IN ADDRESS (9,10 SEM ( ( R/W ...

Page 9

IDT70V28L High-Speed 3.3V 64K x 16 Dual-Port Static RAM VALID ADDRESS t AW SEM I R/W OE NOTES and for the duration of the above ...

Page 10

IDT70V28L High-Speed 3.3V 64K x 16 Dual-Port Static RAM Symbol BUSY TIMING (M/S BUSY Access Time from Address Match t BAA BUSY Disable Time from Address Not Matched t BDA BUSY Access Time from Chip Enable Low t ...

Page 11

IDT70V28L High-Speed 3.3V 64K x 16 Dual-Port Static RAM ADDR "A" R/W "A" DATA IN "A" (1) t APS ADDR "B" BUSY "B" DATA OUT "B" NOTES ensure that the earlier of the two ports wins ...

Page 12

IDT70V28L High-Speed 3.3V 64K x 16 Dual-Port Static RAM BUSY ADDR "A" and "B" CE "A" (2) t APS CE "B" BUSY "B" BUSY S ADDR "A" t APS ADDR "B" BUSY "B" NOTES: 1. All timing is the same ...

Page 13

IDT70V28L High-Speed 3.3V 64K x 16 Dual-Port Static RAM ADDR "A" CE "A" "A" INT "B" ADDR "B" CE "B" OE "B" INT "B" NOTES: 1. All timing is the same for left and right ports. Port “A” ...

Page 14

IDT70V28L High-Speed 3.3V 64K x 16 Dual-Port Static RAM BUSY Inputs Outputs 15L CE CE BUSY ( 15R MATCH MATCH MATCH H ...

Page 15

IDT70V28L High-Speed 3.3V 64K x 16 Dual-Port Static RAM Busy Logic provides a hardware indication that both ports of the RAM have accessed the same location at the same time. It also allows one of the two accesses to proceed ...

Page 16

IDT70V28L High-Speed 3.3V 64K x 16 Dual-Port Static RAM verifies its success in setting the latch by reading it was successful, it proceeds to assume control over the shared resource was not successful in setting the ...

Page 17

... Page 1 & 17 Replaced IDT logo Pages & 12 Removed Industrial Temperature range for 15ns from DC & AC Electrical Characteristics CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 The IDT logo is a registered trademark of Integrated Device Technology, Inc Process/ Temperature Range Blank ...

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