Integrated Device Technology Inc IDT7027L20G, IDT7027L20PF, IDT7027L25G, IDT7027L25GB, IDT7027L25PF Datasheet

HIGH-SPEED
32K x 16 DUAL-PORT
STATIC RAM

Features

◆◆

◆

◆◆

True Dual-Ported memory cells which allow simultaneous
access of the same memory location

◆◆

◆

◆◆

High-speed access
– Military: 25/35/55ns (max)
– Industrial: 25ns (max.)
– Commercial: 20/25/35/55ns (max.)

◆◆

◆

◆◆

Low-power operation
– IDT7027S

Active: 750mW (typ.)
Standby: 5mW (typ.)

– IDT7027L

Active: 750mW (typ.)
Standby: 1mW (typ.)

◆◆

◆

◆◆

Separate upper-byte and lower-byte control for bus
matching capability.

◆◆

◆

◆◆

Dual chip enables allow for depth expansion without

Functional Block Diagram

IDT7027S/L

external logic

◆◆

◆

◆◆

IDT7027 easily expands data bus width to 32 bits or more
using the Master/Slave select when cascading more than
one device

◆◆

◆

◆◆

M/S = VIH for BUSY output flag on Master,
M/S = VIL for BUSY input on Slave

◆◆

◆

◆◆

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

◆◆

◆

◆◆

TTL-compatible, single 5V (±10%) power supply

◆◆

◆

◆◆

Available in 100-pin Thin Quad Flatpack (TQFP) and 108-pin
Ceramic Pin Grid Array (PGA)

◆◆

◆

◆◆

Industrial temperature range (–40°C to +85°C) is available
for selected speeds

R/

W

L

UB

L

CE

0L

CE

1L

OE

L

LB

L

8-15L

I/O

0-7L

I/O

(1,2)

BUSY

L

14L

A

A

SEM

INT

0L

L

(2)

L

Address
Decoder

A

14L

A

0L

CE

0L

CE

1L

OE

W

R/

L
L

NOTES:

1. BUSY is an input as a Slave (M/S=V

IL) and an output as a Master (M/S=VIH).

2. BUSY and INT are non-tri-state totem-pole outputs (push-pull).

©2000 Integrated Device Technology, Inc.

I/O

Control

32Kx16

MEMORY

ARRAY

7027

ARBITRATION

INTERRUPT

SEMAPHORE

LOGIC

(2)

M/

S

1

I/O

Control

Address
Decoder

A

14R

A

0R

CE

0R

CE

1R

OE

R

R/

W

R

R/

UB

CE

CE

OE

LB

BUSY

A
A

SEM
INT

3199 drw 01

W

R

R

0R
1R

R

R

I/O

8-15R

I/O

0-7R

(1,2)

R

.

14R

0R

R

(2)

R

MAY 2000

DSC 3199/7

IDT7027S/L

.

High-Speed 32K x 16 Dual-Port Static RAM Military, Industrial and Commercial Temperature Ranges

Description

The IDT7027 is a high-speed 32K x 16 Dual-Port Static RAM,
designed to be used as a stand-alone 512K-bit Dual-Port RAM or as a
combination MASTER/SLAVE Dual-Port RAM for 32-bit-or-more word
systems. Using the IDT MASTER/SLAVE Dual-Port RAM approach in 32­bit or wider memory system applications results in full-speed, error-free
operation without the need for additional discrete logic.

The device provides two independent ports with separate control,
address, and I/O pins that permit independent, asynchronous access for
reads or writes to any location in memory. An automatic power down
feature controlled by the chip enables (CE0 and CE1) permits the on-chip

circuitry of each port to enter a very low standby power mode.

Fabricated using IDT’s CMOS high-performance technology, these
devices typically operate on only 750mW of power. The IDT7027 is
packaged in a 100-pin Thin Quad Flatpack (TQFP) and a 108-pin ceramic
Pin Grid Array (PGA).

Military grade product is manufactured in compliance with the
latest revision of MIL-PRF-38535 QML, making it ideally suited to
military temperature applications demanding the highest level of
performance and reliability.

INDEX

9L

A

A

10L
11L

A
A

12L

A

13L

A

14L

NC
NC
NC

LB

UB

CE

0L

CE

1L

SEM

Vcc

R/

W

OE

GND
GND

15L

I/O
I/O

14L
13L

I/O

12L

I/O
I/O

11L

I/O

10L

(1,2,3)

L

L

L

7

6

8

A

A

A

100999897969594939291908988878685848382818079787776

1
2
3
4
5
6
7
8
9

L

10

L

11
12
13

L

14
15

L

16

L

17
18
19
20
21
22
23
24
25

26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

L

L

c

8

9

c
V

O

O

/

/

I

I

L

L

L

L

2

3

5

4

A

A

A

A

L

L

L

L

4

5

6

7

O

O

O

O

/

/

/

/

I

I

I

I

Pin Configurations

NOTES:

CC pins must be connected to power supply.

1. All V

2. All GND pins must be connected to ground supply.

3. Package body is approximately 14mm x 14mm x 1.4mm.

4. This package code is used to reference the package diagram.

5. This text does not indicate orientation of the actual part-marking.

L

L

C

0

1

N

A

A

100-Pin TQFP

L

L

2

3

O

O

/

/

I

I

L

Y

L

D

S

T

N

U

N

I

B

G

IDT7027PF
PN100-1

Top View

L

L

D

D

0

1

N

N

O

O

/

/

G

G

I

I

(4)

(5)

R

Y

R

S

R

R

T

U

/S

0

1

N

I

B

A

M

R

0

O

/

I

A

R

R

R

R

4

3

2

1

O

O

O

O

/

/

/

/

I

I

I

I

R

R

R

R

R

R

R

5

4

7

8

6

3

2

A

A

A

A

A

A

A

A

9R

75

A

10R

74

A

11R

73

A

12R

72

A

13R

71

A

14R

70

NC

69

NC

68

NC

67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51

c

R

R

R

R

6

5

O

O

/

/

I

I

R

c

7

8

9

V

O

O

O

/

/

/

I

I

I

3199 drw 02

C
N

LB
UB
CE

CE

SEM

GND
R/

W

OE

GND
GND
I/O
I/O
I/O
I/O
I/O
I/O

R

R
0R
1R

R

R

R

15R
14R
13R
12R
11R
10R

6.42

2

IDT7027S/L

.

High-Speed 32K x 16 Dual-Port Static RAM Military, Industrial and Commercial Temperature Ranges

Pin Configurations

81 57 54

A

10R

12

A

11

A

10

A

09

INT

08

GND

07

BUSY

06

A

05

A

04

A

03

107

A

02

108

A

01

(1,2,3)

(con't.)

80 77 74 72 69 68 65 63 60

A

A

11R

83 78 76 73 70 67 64 61 5984 56

A

8R

7R

8687

82 79 75 71 66 62 58 50

A

5R

4R

85

8890

A

3R

1R

89

9192

R

A

0R

93

9495

BUSY

S

M/

98

9796

L

INT

L

102

10099

A

0L

2L

5L

8L

9L

1L

106

103101

A

4L

105104

1

A

6L

2

5

A

A

11L

3 6 9 111415182023

12L

A

A

A

A

A

A

14R

NC

10L

14L

NCA

13R

9R

6R

2R

3L

7L

NC

NC

A

12R

R

4

8

A

13L

7

10

NC

LB

L

UB

LB

UB

CE

R

R

NC

NC

0L

SEM

CE

CE

IDT7027G

G108-1

108-Pin P GA

Top View

12

CE

13

SEM

L

Vcc

GND

R/

OE

(4)

17

GND

16

OE

R/

GND

W

GND

R

R

I/O

(5)

21

I/O

19

GND

L

W

L

15R

14L

I/O

I/O

25

I/O

22

I/O

I/O

NC

14R

11R

10L

13L

15L

R

1R

0R

1L

L

I/O

13R

I/O

12R

55 51

NC

52 49

NC

48 46

I/O

6R

44 43

I/O

2R

39 40

I/O

1L

35 37

I/O

4L

31 34

Vcc

28

NC

24

I/O

11L

I/O

12L

I/O

10R

I/O

9R

I/O

8R

VccA

I/O4RI/O

I/O

1R

I/O

0L

2L

I/O

5L

32

I/O7L

29 30

NC

26 27

I/O

9L

NC

53

NC

I/O

47

I/O

45

42

I/O

41

GND

38

GNDI/O

36

I/O

33

I/O

I/O

NCNC

7R

5R

3R

0R

3L

6L

8L

ABCDEFGHJK LM

INDEX

NOTES:

CC pins must be connected to power supply.

1. All V

2. All GND pins must be connected to ground supply.

3. Package body is approximately 1.21 in x 1.21 in x .16 in.

4. This package code is used to reference the package diagram.

5. This text does not indicate orientation of the actual part-marking.

6.42

3

3199 drw 03

Pin Names

Left Port Right Port Names

CE

0L

, CE

W

L

R/

OE

L

14L

A0L - A

I/O0L - I/O

SEM

L

UB

L

LB

L

INT

L

BUSY

L

1L

15L

CE

R/

OE

A0R - A
I/O0R - I/O

SEM

UB

LB

INT

BUSY

S

M/

CC

V

0R

, CE

W

R

R

14R

R

R

R

R

R

GND Ground

1R

15R

Chip Enables
Read /Write En able
Output Enable
Address
Dat a In p ut/ O ut p ut
Semaphore Enable
Upper Byte Select
Lower Byte Select
Interr up t Flag
Busy Flag
Master or Slave Select
Power

3199 tbl 01

IDT7027S/L
High-Speed 32K x 16 Dual-Port Static RAM Military, Industrial and Commercial Temperature Ranges

Truth Table I  Chip Enable

CE CE

CE

0

1

Mode

IL

V

L

0.2V >VCC -0.2V Port Selected (CMOS Active)

<

IH

V

XV

H

VCC -0. 2V X P o rt De s e le cte d (C MO S Inac tiv e )

>

X<

NOTES:

1. Chip Enable references are shown above with the actual CE

2. Port "A" and "B" references are located where CE is used.

3. "H" = V

IH and "L" = VIL.

IH

V

Port Se lected (TTL Active)

X Port Deselected (TTL Inactive)

IL

Port Deselected (TTL Inactive)

0.2V Port Deselected (CMOS Inactive)

0 and CE1 levels, CE is a reference only.

Truth Table II  Non-Contention Read/Write Control

(1)

Inputs

CE

(2)

R/W

OE UB LB SEM

HXXXXHHigh-ZHigh-ZDeselected: Power-Down
X X X H H H High-Z High-Z Both By tes Des ele cted
LLXLHHDATAINHigh-Z Write to Upper Byte Only
L L X H L H High-Z DAT A

I/O

Outputs

8-15

I/O

0-7

IN

Wri te to Lo we r B y te O nly

Mode

3199 tbl 02

LLXLLHDATAINDAT AINWri te to Bo th By te s
LHLLHHDATA
LHLHLHHigh-ZDATA
LHLLLHDATA

OUT

OUT

High-Z Read Upper Byte Only

OUT

Re ad Lo we r By te Only

OUT

DAT A

Read Both Bytes

X X H X X X High-Z High-Z Outputs Disabled

NOTES:

0L — A14L ≠ A0R — A14R.

1. A

2. Refer to Chip Enable Truth Table.

Truth Table III  Semaphore Read/Write Control

(1)

Inputs

CE

(2)

R/

W

OE U B LB SEM

HHLXXLDATA
XHLHHLDATA
H
X

↑
↑

XXXLDATAINDAT AINWrite I/O0 into Semaphore Flag

XHHLDATAINDAT AINWrite I/O0 into Semaphore Flag
LXXLXL
LXXXLL

NOTES:

1. There are eight semaphore flags written to via I/O

2. Refer to Chip Enable Truth Table.

0

and read from all the I/Os (I/O0 __I/O15). These eight semaphore flags are addressed by A0-A2.

6.42

4

Outputs

8-15

I/O

OUT

OUT

______ ______

______ ______

I/O

DAT A
DAT A

0-7

OUT

Read Data in Semaphore Flag

OUT

Read Data in Semaphore Flag

No t All o we d
No t All o we d

3199 t bl 03

Mode

3199 tbl 04

IDT7027S/L
High-Speed 32K x 16 Dual-Port Static RAM Military, Industrial and Commercial Temperature Ranges

Absolute Maximum Ratings

Symbol Rating Commercial

(2)

V

TERM

Te rminal Vol tage
with Res pe c t
to GND

T

BIAS

T emperature
Und e r B ia s

STG

T

Storage
T emperature

I

OUT

DC Output
Current

NOTES:

1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may
cause permanent damage to the device. This is a stress rating only and
functional operation of the device at these or any other conditions above those
indicated in the operational sections of this specification is not implied. Exposure
to absolute maximum rating conditions for extended periods may affect
reliability.

TERM must not exceed Vcc + 10% for more than 25% of the cycle time or 10ns

2. V
maximum, and is limited to

& Industrial

-0.5 to +7.0 -0.5 to +7.0 V

-55 to + 125 -65 to + 135oC

-65 to + 150 -65 to + 150oC

50 50 mA

< 20mA for the period of VTERM > Vcc + 10%.

Recommended DC Operating
Conditions

Symbol Parameter Min. Typ. Max. Unit

V

Supply Voltage 4.5 5.0 5.5 V

CC

(1,3)

Military Unit

3199 tbl 05

Maximum Operating
Temperature and Supply Voltage

Grade

Military -55OC to+ 125OC0V 5.0V + 10%
Commercial 0
Industrial -40OC to +85OC0V 5.0V + 10%

NOTES:

1. This is the parameter T

2. Industrial temperature: for other speeds packages and powers, contact your
sales office.

Capacitance

(TA = +25°C, f = 1.0mhz) TQFP ONLY

Symbol Parameter Conditions

IN

C

Inp ut Cap a ci tanc e VIN = 3dV 9 pF
Output

OUT

C

NOTES:

1. This parameter is determined by device characterization but is not production
tested.

2. 3dV represents the interpolated capacitance when the input and output signals
switch from 0V to 3V or from 3V to 0V.

Capacitance V

Ambient

Temperature GND Vcc

O

C to +70OC0V5.0V + 10%

A. This is the "instant on" case temperature.

(1)

(2)

Max. Unit

OUT

= 3dV 10 pF

3199 tbl 06

3199 tbl 08

GND Ground 0 0 0 V

V

Input Hi g h Vol tag e 2.2

IH

V

Inp ut Lo w Vol tag e -0.5

IL

NOTES:

IL > -1.5V for pulse width less than 10ns.

1. V

TERM must not exceed Vcc + 10%.

2. V

____

(1)

____

(2)

6.0

0.8 V

3199 tbl 07

V

(1)

DC Electrical Characteristics Over the Operating
Temperature and Supply Voltage Range

Symbol Parameter Test Conditions

|ILI| Input Le akag e Curre nt

LO

|I

| Outp ut Le akag e Curre nt

OL

V
V

NOTE:

1. At Vcc

Outpu t Low Voltag e IOL = 4mA

OH

Output High Voltage IOH = -4mA 2.4

< 2.0V, input leakages are undefined.

(1)

VCC = 5.5V, VIN = 0V to V

IH

OUT

, V

CE

= V

= 0V to V

6.42

(VCC = 5.0V ± 10%)

CC

CC

5

7027S 7027L

___

___

___

10
10

0.4

___

2.4

UnitMin. Max. Min. Max.

___

___

___

5µA
5µA

0.4 V

___

V

3199 t bl 09

IDT7027S/L
High-Speed 32K x 16 Dual-Port Static RAM Military, Industrial and Commercial Temperature Ranges

DC Electrical Characteristics Over the Operating

S

L

S

L

S

L

S

L

S

L

(1,6,7)

7027X20

Com'l Only

(2)

185

____
____

____
____

120

____
____

0.2

____
____

115

____
____

(VCC = 5.0V ± 10%)

7027X25
Com'l, Ind
& Military

Max. Typ.

325

180

285

170

____

170

____

170

404085

70

____

4040100803030100802020100

____

215

105

185

105

____

105

____

105

1551.0

0.2

____

1.0

____

0.23010

190

100

160

100

____

100

____

100

Temperature and Supply Voltage Range

Symbol Param eter Test Condition Version Typ.

Dynam ic Op e rati ng

I

CC

Current
(Both Ports Active)

I

Standby Current

SB1

(Both Po rts - TTL Lev e l
Inputs)

I

Standby Current

SB2

(On e Po rt - TTL Lev e l
Inputs)

I

Full Standb y Current

SB3

(Both Po rts - Al l CMO S
Le v e l In p uts )

I

Full Standb y Current

SB4

(On e Po rt - A ll CMOS
Le v e l In p uts )

CE

, Outputs Disabled

= V

IL

SEM

= V

IH

(3)

f = f

MAX

CE

CE

=

= V

L

R

SEM

R

f = f

MAX

CE

"A"

Active Port Outputs Disabled,
f=f

MAX

SEM

R

Bo th P o rts

CE

> VCC - 0.2V

R

V

> VCC - 0.2V o r

IN

V

< 0.2V, f = 0

IN

SEM

R

CE

"A"

CE

"B"

SEM

R

V

> VCC - 0.2V o r

IN

V

< 0.2V, Ac tiv e P o rt Outp uts

IN

Disable d , f = f

IH

SEM

=

= V

L

(3)

= VIL and

(3)

SEM

=

= V

L

CE

and

L

SEM

=

> VCC - 0.2V

L

< 0.2V a nd
> VCC - 0.2V

SEM

=

> VCC - 0.2V

L

MAX

CE

(4)

IH

= V

"B"

IH

(5)

(3)

NOTES:

1. 'X' in part numbers indicates power rating (S or L).

CC = 5V, TA = +25°C, and are not production tested. ICCDC = 120mA (Typ.)

2. V

3. At f = f

MAX, address and control lines (except Output Enable) are cycling at the maximum frequency read cycle of 1/ tRC, and using “AC Test Conditions” of input

levels of GND to 3V.

4. f = 0 means no address or control lines change.

5. Port "A" may be either left or right port. Port "B" is the opposite from port "A".

6. Refer to Chip Enable Truth Table.

7. Industrial temperature: for other speeds, packages and powers contact your sales office.

COM'L SL185

MIL &
IND

COM'L SL555590

MIL &
IND

(5)

COM'L SL120

IH

MIL &
IND

COM'L SL1.0

MIL &
IND

COM'L SL115

MIL &
IND

(2)

Max. Typ.

305

160

265

160

345

160

305

160

60

200
1709595

230
2009595

1551.0

170
1459090

200
1759090

7027X35
Com 'l &

Military

(2)

Max. Typ.

295
255

335
295

30
30

215

0.2

1.0

0.23010

85
60

185
1558585

1858585

15

5

160
1358080

190
1658080

7027X55
Com 'l &

Military

(2)

Max. Unit

150

270

150

230

150

310

150

270

20
20

165
135

195
165

1.0

0.2

1.0

0.23010
135

110

175
150

mA

8560mA

80

mA

155mA

mA

3199 tbl 1 0

6.42

6