GS880F36BT-6.5T_技术文档

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

4.5 ns–7.5 ns

100-Pin TQFP

Commercial Temp

Industrial Temp

512K x 18, 256K x 32, 256K x 36

9Mb Sync Burst SRAMs

2.5 V or 3.3 V V

DD

2.5 V or 3.3 V I/O

interleave order with the Linear Burst Order (LBO) input. The

Burst function need not be used. New addresses can be loaded

on every cycle with no degradation of chip performance.

Features

• Flow Through mode operation; Pin 14 = No Connect

• 2.5 V or 3.3 V +10%/–10% core power supply

• 2.5 V or 3.3 V I/O supply

Designing For Compatibility

The JEDEC standard for Burst RAMS calls for a FT mode pin

option on Pin 14. Board sites for flow through Burst RAMS

• LBO pin for Linear or Interleaved Burst mode

• Internal input resistors on mode pins allow floating mode pins

• Byte Write (BW) and/or Global Write (GW) operation

• Internal self-timed write cycle

• Automatic power-down for portable applications

• JEDEC-standard 100-lead TQFP package

• RoHS-compliant 100-lead TQFP package available

should be designed with V connected to the FT pin location

SS

to ensure the broadest access to multiple vendor sources.

Boards designed with FT pin pads tied low may be stuffed with

GSI’s pipeline/flow through-configurable Burst RAMs or any

vendor’s flow through or configurable Burst SRAM. Boards

designed with the FT pin location tied high or floating must

employ a non-configurable flow through Burst RAM, like this

RAM, to achieve flow through functionality.

Functional Description

Applications

Byte Write and Global Write

The GS880F18/32/36BT is a 9,437,184-bit (8,388,608-bit for

x32 version) high performance synchronous SRAM with a

2-bit burst address counter. Although of a type originally

developed for Level 2 Cache applications supporting high

performance CPUs, the device now finds application in

synchronous SRAM applications, ranging from DSP main

store to networking chip set support.

Byte write operation is performed by using Byte Write enable

(BW) input combined with one or more individual byte write

signals (Bx). In addition, Global Write (GW) is available for

writing all bytes at one time, regardless of the Byte Write

control inputs.

Sleep Mode

Low power (Sleep mode) is attained through the assertion

(High) of the ZZ signal, or by stopping the clock (CK).

Memory data is retained during Sleep mode.

Controls

Addresses, data I/Os, chip enables (E1, E2, E3), address burst

control inputs (ADSP, ADSC, ADV), and write control inputs

(Bx, BW, GW) are synchronous and are controlled by a

positive-edge-triggered clock input (CK). Output enable (G)

and power down control (ZZ) are asynchronous inputs. Burst

cycles can be initiated with either ADSP or ADSC inputs. In

Burst mode, subsequent burst addresses are generated

internally and are controlled by ADV. The burst address

counter may be configured to count in either linear or

Core and Interface Voltages

The GS880F18/32/36BT operates on a 2.5 V or 3.3 V power

supply. All input are 3.3 V and 2.5 V compatible. Separate

output power (V

) pins are used to decouple output noise

DDQ

from the internal circuits and are 3.3 V and 2.5 V compatible.

Paramter Synopsis

-4.5

-5

-5.5

-6.5

-7.5

Unit

t_KQ

4.5

5.0

5.5

6.5

7.5

ns

tCycle

Flow Through

2-1-1-1

Curr (x18)

Curr (x32/x36)

200

230

185

210

160

185

140

160

128

145

mA

Rev: 1.04 6/2007

1/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

GS880F18B 100-Pin TQFP Pinout (Package T)

100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81

A

NC

1

2

3

4

5

6

7

8

9

80

79

78

77

76

75

74

73

72

71

70

69

68

67

66

65

64

63

62

61

60

59

58

57

56

55

54

53

52

51

NC

V

NC

DQPA

DQA

V

DQA

V

NC

V

ZZ

DQ^A

DQA

V

DDQ

V

SS

NC

DQB

512K x 18

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

V

SS

Top View

V

DDQ

DQB

NC

SS

V

DD

NC

DD

V

SS

DQB

V

DDQ

V

SS

DQA

NC

V

DQB

DQPB

NC

V

SS

V

DDQ

NC

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

Note:

Pins marked with NC can be tied to either V or V . These pins can also be left floating.

DD

SS

Rev: 1.04 6/2007

2/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

GS880F32B 100-Pin TQFP Pinout (Package T)

100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81

NC

DQB

DQ^B

V

NC

DQC

DQ^C

1

2

3

4

5

6

7

8

9

80

79

78

77

76

75

74

73

72

71

70

69

68

67

66

65

64

63

62

61

60

59

58

57

56

55

54

53

52

51

V

DDQ

V

SS

DQB

DQC

DQ^C

DQC

256K x 32

V

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

V

SS

V

Top View

V

DDQ

DQB

DQC

V

SS

NC

V

DD

V

NC

DD

ZZ

V

SS

DQ^A

DQA

V

DQD

V

DDQ

V

SS

DQA

DQD

V

SS

V

DDQ

DQA

NC

DQD

NC

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

Note:

Pins marked with NC can be tied to either V or V . These pins can also be left floating.

DD

SS

Rev: 1.04 6/2007

3/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

GS880F36B 100-Pin TQFP Pinout (Package T)

100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81

DQPB

DQB

DQPC

DQC

1

2

3

4

5

6

7

8

9

80

79

78

77

76

75

74

73

72

71

70

69

68

67

66

65

64

63

62

61

60

59

58

57

56

55

54

53

52

51

V

DDQ

V

SS

DQB

DQC

256K x 36

V

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

V

SS

V

Top View

V

DDQ

DQB

DQC

V

SS

NC

V

DD

V

NC

DD

ZZ

DQ^A

DQA

V

SS

DQD

V

DDQ

V

SS

DQA

DQD

V

SS

V

DDQ

DQA

DQPA

DQD

DQPD

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

Note:

Pins marked with NC can be tied to either V or V . These pins can also be left floating.

DD

SS

Rev: 1.04 6/2007

4/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

TQFP Pin Description

Symbol

A0, A1

A

Type

Description

I

Address field LSBs and Address Counter preset Inputs

Address Inputs

DQ^A

DQB

DQC

DQD

I/O

Data Input and Output pins

NC

—

No Connect

BW

I

Byte Write—Writes all enabled bytes; active low

Byte Write Enable for DQA, DQB Data I/Os; active low

Clock Input Signal; active high

BA, BB, BC, BD

CK

GW

Global Write Enable—Writes all bytes; active low

Chip Enable; active low

E1

G

ADV

Output Enable; active low

Burst address counter advance enable; active low

Address Strobe (Processor, Cache Controller); active low

Sleep Mode control; active high

ADSP, ADSC

ZZ

LBO

Linear Burst Order mode; active low

Core power supply

V

DD

V

I

I/O and Core Ground

SS

V

Output driver power supply

DDQ

Rev: 1.04 6/2007

5/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

GS880F18/32/36B Block Diagram

Register

A0–An

D

Q

A0

A1

A0

A1

D0

D1

Q0

Q1

Counter

Load

A

LBO

ADV

Memory

Array

CK

ADSC

ADSP

Q

D

Register

GW

BW

BA

D

Q

Register

36

D

Q

BB

BC

BD

4

Register

D

Q

Register

D

Q

Register

D

Q

Register

E1

E2

E3

D

Q

Register

D

Q

0

G

1

Power Down

Control

DQx1–DQx9

ZZ

Note: Only x36 version shown for simplicity.

Rev: 1.04 6/2007

6/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

Mode Pin Functions

Mode Name

Pin Name

State

Function

Linear Burst

Interleaved Burst

Flow Through

Pipeline

L

Burst Order Control

Output Register Control

Power Down Control

LBO

H

L

FT

ZZ

H or NC

L or NC

H

Active

Standby, I = I

DD SB

Note:

There is a pull-up device on the FT pin and a pull-down device on the ZZ pin, so this input pin can be unconnected and the chip will operate

in the default states as specified in the above tables.

Burst Counter Sequences

Linear Burst Sequence

A[1:0] A[1:0] A[1:0] A[1:0]

Interleaved Burst Sequence

A[1:0] A[1:0] A[1:0] A[1:0]

1st address

2nd address

3rd address

4th address

00

01

10

11

01

10

11

00

10

11

00

01

11

00

01

10

1st address

2nd address

3rd address

4th address

00

01

10

11

01

00

11

10

11

00

01

11

10

01

00

Note:

The burst counter wraps to initial state on the 5th clock.

Note:

The burst counter wraps to initial state on the 5th clock.

BPR 1999.05.18

Rev: 1.04 6/2007

7/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

Byte Write Truth Table

Function

Read

GW

BW

H

L

BA

X

BB

X

BC

X

BD

X

Notes

1

H

L

Write No Bytes

Write byte a

Write byte b

Write byte c

Write byte d

Write all bytes

H

L

H

L

H

L

H

L

1

L

2, 3

L

H

L

2, 3

L

H

L

2, 3, 4

L

H

L

X

Notes:

1. All byte outputs are active in read cycles regardless of the state of Byte Write Enable inputs, BA, BB, BC and/or BD.

2. Byte Write Enable inputs BA, BB, BC and/or BD may be used in any combination with BW to write single or multiple bytes.

3. All byte I/Os remain High-Z during all write operations regardless of the state of Byte Write Enable inputs.

4. Bytes “C” and “D” are only available on the x32 and x36 versions.

Rev: 1.04 6/2007

8/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

Synchronous Truth Table

Operation

State

Address

Used

2

3

4

Diagram

E1

ADSP ADSC ADV

E

W

DQ

5

Key

Deselect Cycle, Power Down

Read Cycle, Begin Burst

None

X

H

L

X

L

X

L

X

L

X

F

T

F

T

F

T

High-Z

F

T

X

High-Z

None

X

L

H

L

High-Z

External

X

L

Q

D

Q

D

Q

D

Read Cycle, Begin Burst

Write Cycle, Begin Burst

Read Cycle, Continue Burst

Write Cycle, Continue Burst

Read Cycle, Suspend Burst

Write Cycle, Suspend Burst

R

L

X

H

X

H

X

H

X

H

X

H

X

H

X

H

X

W

L

CR

CW

H

Current

H

Notes:

1. X = Don’t Care, H = High, L = Low

2. E = T (True) if E²= 1 and E3 = 0; E = F (False) if E2 = 0 or E3 = 1

3. W = T (True) and F (False) is defined in the Byte Write Truth Table preceding

4. G is an asynchronous input. G can be driven high at any time to disable active output drivers. G low can only enable active drivers (shown

as “Q” in the Truth Table above).

5. All input combinations shown above are tested and supported. Input combinations shown in gray boxes need not be used to accomplish

basic synchronous or synchronous burst operations and may be avoided for simplicity.

6. Tying ADSP high and ADSC low allows simple non-burst synchronous operations. See BOLD items above.

7. Tying ADSP high and ADV low while using ADSC to load new addresses allows simple burst operations. See ITALIC items above.

Rev: 1.04 6/2007

9/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

Simplified State Diagram

X

Deselect

W

R

W

R

X

R

X

First Write

First Read

CW

CR

W

R

X

Burst Write

X

Burst Read

CR

CW

Notes:

1. The diagram shows only supported (tested) synchronous state transitions. The diagram presumes G is tied low.

2. The upper portion of the diagram assumes active use of only the Enable (E1, E2, and E3) and Write (BA, BB, BC, BD, BW, and GW) con-

trol inputs and that ADSP is tied high and ADSC is tied low.

3. The upper and lower portions of the diagram together assume active use of only the Enable, Write, and ADSC control inputs and

assumes ADSP is tied high and ADV is tied low.

Rev: 1.04 6/2007

10/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

Simplified State Diagram with G

X

Deselect

W

R

W

R

X

W

R

X

First Write

First Read

CR

CW

CR

W

R

W

X

Burst Write

X

Burst Read

CR

CW

Notes:

1. The diagram shows supported (tested) synchronous state transitions plus supported transitions that depend upon the use of G.

2. Use of “Dummy Reads” (Read Cycles with G High) may be used to make the transition from read cycles to write cycles without passing

through a Deselect cycle. Dummy Read cycles increment the address counter just like normal read cycles.

3. Transitions shown in grey tone assume G has been pulsed high long enough to turn the RAM’s drivers off and for incoming data to meet

Data Input Set Up Time.

Rev: 1.04 6/2007

11/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

Absolute Maximum Ratings

(All voltages reference to V

)

SS

Symbol

Description

Value

Unit

V

Voltage on V Pins

–0.5 to 4.6

DD

V

Voltage in V

Pins

DDQ

–0.5 to 4.6

V

DDQ

V

–0.5 to V

+0.5 (≤ 4.6 V max.)

DDQ

Voltage on I/O Pins

Voltage on Other Input Pins

Input Current on Any Pin

Output Current on Any I/O Pin

Package Power Dissipation

Storage Temperature

V

I/O

V

–0.5 to V +0.5 (≤ 4.6 V max.)

V

IN

DD

I

+/–20

mA

W

IN

I

OUT

P

1.5

D

o

T

–55 to 125

C

STG

o

T

Temperature Under Bias

C

BIAS

Note:

Permanent damage to the device may occur if the Absolute Maximum Ratings are exceeded. Operation should be restricted to Recommended

Operating Conditions. Exposure to conditions exceeding the Absolute Maximum Ratings, for an extended period of time, may affect reliability of

this component.

Power Supply Voltage Ranges

Parameter

Symbol

Min.

3.0

Typ.

3.3

Max.

3.6

Unit

Notes

V

3.3 V Supply Voltage

2.5 V Supply Voltage

V

DD3

V

2.3

2.5

2.7

DD2

3.3 V V

I/O Supply Voltage

V

3.0

3.3

3.6

DDQ

DDQ3

2.5 V V

I/O Supply Voltage

V

2.3

2.5

2.7

DDQ2

Notes:

1. The part numbers of Industrial Temperature Range versions end the character “I”. Unless otherwise noted, all performance specifica-

tions quoted are evaluated for worst case in the temperature range marked on the device.

2. Input Under/overshoot voltage must be –2 V > Vi < V +2 V not to exceed 4.6 V maximum, with a pulse width not to exceed 20% tKC.

DDn

Rev: 1.04 6/2007

12/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

V

Range Logic Levels

Parameter

DDQ3

Symbol

Min.

2.0

Typ.

—

Max.

Unit

Notes

V

Input High Voltage

V

+ 0.3

DD

V

1

DD

IH

V

Input Low Voltage

V

–0.3

2.0

—

0.8

+ 0.3

1

DD

IL

V

I/O Input High Voltage

I/O Input Low Voltage

V

—

1,3

DDQ

IHQ

DDQ

V

–0.3

—

0.8

DDQ

ILQ

Notes:

1. The part numbers of Industrial Temperature Range versions end the character “I”. Unless otherwise noted, all performance specifica-

tions quoted are evaluated for worst case in the temperature range marked on the device.

2. Input Under/overshoot voltage must be –2 V > Vi < V +2 V not to exceed 4.6 V maximum, with a pulse width not to exceed 20% tKC.

DDn

3.

V

(max) is voltage on V

pins plus 0.3 V.

DDQ

IHQ

V

Range Logic Levels

Parameter

DDQ2

Symbol

Min.

Typ.

—

Max.

Unit

Notes

V

Input High Voltage

V

0.6*V

V

+ 0.3

DD

V

1

DD

IH

DD

V

Input Low Voltage

V

0.3*V

DD

–0.3

—

1

DD

IL

V

I/O Input High Voltage

I/O Input Low Voltage

V

0.6*V

V

+ 0.3

DDQ

—

1,3

DDQ

IHQ

DD

V

0.3*V

DD

–0.3

—

DDQ

ILQ

Notes:

1. The part numbers of Industrial Temperature Range versions end the character “I”. Unless otherwise noted, all performance specifica-

tions quoted are evaluated for worst case in the temperature range marked on the device.

2. Input Under/overshoot voltage must be –2 V > Vi < V +2 V not to exceed 4.6 V maximum, with a pulse width not to exceed 20% tKC.

DDn

3.

V

(max) is voltage on V

pins plus 0.3 V.

DDQ

IHQ

Recommended Operating Temperatures

Parameter

Symbol

Min.

0

Typ.

25

Max.

70

Unit

°C

Notes

T

Ambient Temperature (Commercial Range Versions)

2

A

T

Ambient Temperature (Industrial Range Versions)

–40

25

85

°C

A

Notes:

1. The part numbers of Industrial Temperature Range versions end the character “I”. Unless otherwise noted, all performance specifica-

tions quoted are evaluated for worst case in the temperature range marked on the device.

2. Input Under/overshoot voltage must be –2 V > Vi < V +2 V not to exceed 4.6 V maximum, with a pulse width not to exceed 20% tKC.

DDn

Rev: 1.04 6/2007

13/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

Undershoot Measurement and Timing

Overshoot Measurement and Timing

V

IH

50% tKC

V

+ 2.0 V

DD

V

SS

50%

V

DD

V

– 2.0 V

SS

50% tKC

V

IL

Capacitance

o

(T = 25 C, f = 1 MHZ, V = 2.5 V)

A

DD

Parameter

Symbol

Test conditions

Typ.

Max.

Unit

pF

C

V

= 0 V

Input Capacitance

4

6

5

7

IN

C

V

OUT

= 0 V

Input/Output Capacitance

pF

I/O

Note:

These parameters are sample tested.

AC Test Conditions

Parameter

Conditions

V

– 0.2 V

Input high level

Input low level

DD

0.2 V

1 V/ns

/2

Input slew rate

V

Input reference level

DD

V

/2

Output reference level

Output load

DDQ

Fig. 1

Notes:

1. Include scope and jig capacitance.

2. Test conditions as specified with output loading as shown in Fig. 1

unless otherwise noted.

3. Device is deselected as defined by the Truth Table.

Output Load 1

DQ

*

50Ω

30pF

V

DDQ/2

* Distributed Test Jig Capacitance

Rev: 1.04 6/2007

14/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

DC Electrical Characteristics

Parameter

Symbol

Test Conditions

Min

Max

Input Leakage Current

(except mode pins)

I

V = 0 to V

IN DD

–1 uA

1 uA

IL

V

≥ V ≥ V

IN

–1 uA

1 uA

100 uA

DD

IH

I

ZZ Input Current

IN1

0 V ≤ V ≤ V

IN

V

≥ V ≥ V

IN

–100 uA

–1 uA

1 uA

DD

IL

I

FT, ZQ Input Current

IN2

0 V ≤ V ≤ V

IN

I

Output Disable, V

= 0 to V

DD

Output Leakage Current

Output High Voltage

Output Low Voltage

–1 uA

1.7 V

2.4 V

—

1 uA

—

OL

OUT

DDQ

V

I

= –8 mA, V

= 2.375 V

= 3.135 V

OH2

OH

V

—

OH3

V

I

= 8 mA

OL

0.4 V

OL

Rev: 1.04 6/2007

15/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

Operating Currents

-4.5

-5

-5.5

-6.5

-7.5

0

to

–40

to

0

to

–40

to

0

to

–40

to

0

to

–40

to

0

to

–40

to

Parameter

Test Conditions

Mode

Symbol

Unit

70°C 85°C 70°C 85°C 70°C 85°C 70°C 85°C 70°C 85°C

I_DD

(x32/

x36)

Flow

Through

205

25

225

25

185

25

205

25

160

25

180

25

140

20

160

20

130

15

150

15

Device Selected;

All other inputs

≥V_IHor ≤ V_IL

mA

I_DDQ

Operating

Current

I_DD

Flow

Through

185

15

205

15

170

15

190

15

145

15

165

15

130

10

150

10

120

8

140

8

(x18)

Output open

I_DDQ

I_SB

I_DD

Pipeline

40

95

65

50

40

90

60

50

95

65

40

85

60

50

90

65

40

75

50

80

55

40

60

50

65

55

mA

Standby

Current

ZZ ≥ V_DD– 0.2 V

—

Flow

Through

Pipeline

100

60

Device Deselected;

All other inputs

≥ V_IHor ≤ V_IL

Deselect

Current

—

Flow

Through

Notes:

1.

2. All parameters listed are worst case scenario.

I

and I

apply to any combination of V , V , V

, and V

operation.

DDQ2

DD

DDQ

DD3 DD2 DDQ3

Rev: 1.04 6/2007

16/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

AC Electrical Characteristics

-4.5

-5

-5.5

-6.5

-7.5

Parameter

Symbol

Unit

Min

4.5

—

Max

—

4.5

—

Min

5.0

—

Max

—

5.0

—

Min

5.5

—

Max

—

5.5

—

Min

6.5

—

Max

—

6.5

—

Min

7.5

—

Max

—

7.5

—

Clock Cycle Time

tKC

tKQ

ns

Clock to Output Valid

Clock to Output Invalid

tKQX

2.0

1.3

0.3

1.0

2.0

1.4

0.4

1.0

2.0

1.5

0.5

1.3

2.0

1.5

0.5

1.3

2.0

1.5

0.5

1.5

Flow

Through

tLZ¹

tS

Clock to Output in Low-Z

Setup time

Hold time

tH

Clock HIGH Time

tKH

Clock LOW Time

tKL

1.2

1.5

—

1.2

1.5

—

1.5

—

1.5

—

1.7

1.5

—

ns

Clock to Output in

High-Z

tHZ¹

2.5

3.0

G to Output Valid

G to output in Low-Z

G to output in High-Z

ZZ setup time

tOE

—

0

2.5

—

2.5

—

0

2.5

—

2.5

—

0

2.5

—

2.5

—

0

3.0

—

3.0

—

0

3.8

—

3.8

—

ns

tOLZ¹

tOHZ¹

tZZS²

tZZH²

tZZR

—

5

—

5

—

5

—

5

—

5

ZZ hold time

1

ZZ recovery

20

Notes:

1. These parameters are sampled and are not 100% tested.

2. ZZ is an asynchronous signal. However, In order to be recognized on any given clock cycle, ZZ must meet the specified setup and hold

times as specified above.

Rev: 1.04 6/2007

17/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

Flow Through Mode Timing

Begin

Read A Cont

tKH

Cont

Write B Read C Read C+1 Read C+2 Read C+3 Read C Cont

Deselect

tKL

tKC

CK

Fixed High

ADSP

tS

tH

tS

tH

ADSC initiated read

ADSC

ADV

A0–An

GW

tS

tH

tS

tH

A

B

C

tS

tH

tS

tH

BW

tS

tH

Ba–Bd

E1

tS

Deselected with E1

tH

E2 and E3 only sampled with ADSC

E2

tS

tH

E3

G

tH

tS

tKQ

tLZ

tHZ

tOE

tOHZ

D(B)

tKQX

Q(A)

Q(C)

Q(C+1)

Q(C+2)

Q(C+3)

Q(C)

DQa–DQd

Rev: 1.04 6/2007

18/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

Sleep Mode

During normal operation, ZZ must be pulled low, either by the user or by its internal pull down resistor. When ZZ is pulled high,

the SRAM will enter a Power Sleep mode after 2 cycles. At this time, internal state of the SRAM is preserved. When ZZ returns to

low, the SRAM operates normally after ZZ recovery time.

Sleep mode is a low current, power-down mode in which the device is deselected and current is reduced to I 2. The duration of

SB

Sleep mode is dictated by the length of time the ZZ is in a High state. After entering Sleep mode, all inputs except ZZ become

disabled and all outputs go to High-Z The ZZ pin is an asynchronous, active high input that causes the device to enter Sleep mode.

When the ZZ pin is driven high, I 2 is guaranteed after the time tZZI is met. Because ZZ is an asynchronous input, pending

SB

operations or operations in progress may not be properly completed if ZZ is asserted. Therefore, Sleep mode must not be initiated

until valid pending operations are completed. Similarly, when exiting Sleep mode during tZZR, only a Deselect or Read commands

may be applied while the SRAM is recovering from Sleep mode.

Sleep Mode

tKH

tKC

tKL

CK

Setup

Hold

ADSP

ADSC

tZZR

tZZS

tZZH

ZZ

Rev: 1.04 6/2007

19/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

TQFP Package Drawing (Package T)

θ

L

c

L1

Symbol

Description

Standoff

Min. Nom. Max

A1

A2

b

0.05

1.35

0.20

0.09

0.10

1.40

0.30

—

0.15

1.45

0.40

0.20

22.1

20.1

16.1

14.1

—

Body Thickness

Lead Width

c

Lead Thickness

D

Terminal Dimension 21.9

Package Body 19.9

Terminal Dimension 15.9

22.0

20.0

16.0

14.0

0.65

0.60

1.00

e

D1

E

b

E1

e

Package Body

Lead Pitch

13.9

—

L

Foot Length

Lead Length

Coplanarity

Lead Angle

0.45

—

0.75

—

L1

Y

A1

A2

E1

E

0.10

7°

θ

0°

—

Notes:

1. All dimensions are in millimeters (mm).

2. Package width and length do not include mold protrusion.

Rev: 1.04 6/2007

20/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

Ordering Information for GSI Synchronous Burst RAMs

2

Speed

3

1

Org

Type

Package

Status

T

Part Number

A

(MHz/ns)

512K x 18

256K x 32

256K x 36

512K x 18

256K x 32

256K x 36

GS880F18BT-4.5

GS880F18BT-5

Flow Through

TQFP

4.5

5

C

I

GS880F18BT-5.5

GS880F18BT-6.5

GS880F18BT-7.5

GS880F32BT-4.5

GS880F32BT-5

5.5

6.5

7.5

4.5

5

GS880F32BT-5.5

GS880F32BT-6.5

GS880F32BT-7.5

GS880F36BT-4.5

GS880F36BT-5

5.5

6.5

7.5

4.5

5

GS880F36BT-5.5

GS880F36BT-6.5

GS880F36BT-7.5

GS880F18BT-4.5I

GS880F18BT-5I

GS880F18BT-5.5I

GS880F18BT-6.5I

GS880F18BT-7.5I

GS880F32BT-4.5I

GS880F32BT-5I

GS880F32BT-5.5I

GS880F32BT-6.5I

GS880F32BT-7.5I

GS880F36BT-4.5I

GS880F36BT-5I

GS880F36BT-5.5I

GS880F36BT-6.5I

5.5

6.5

7.5

4.5

5

I

5.5

6.5

7.5

4.5

5

I

5.5

6.5

7.5

4.5

5

I

5.5

6.5

I

256K x 36

I

Notes:

1. Customers requiring delivery in Tape and Reel should add the character “T” to the end of the part number. Example: GS880F18BT-5T.

2. The speed column indicates the cycle frequency (MHz) of the device in Pipeline mode and the latency (ns) in Flow Through mode. Each

device is Pipeline/Flow through mode-selectable by the user.

3. T = C = Commercial Temperature Range. T = I = Industrial Temperature Range.

A

4. GSI offers other versions this type of device in many different configurations and with a variety of different features, only some of which are

covered in this data sheet. See the GSI Technology web site (www.gsitechnology.com) for a complete listing of current offerings.

Rev: 1.04 6/2007

21/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

Ordering Information for GSI Synchronous Burst RAMs

2

Speed

3

1

Org

Type

Package

Status

T

Part Number

A

(MHz/ns)

256K x 36

GS880F36BT-7.5I

Flow Through

TQFP

7.5

4.5

5

I

C

I

512K x 18 GS880F18BGT-4.5

512K x 18 GS880F18BGT-5

Pb-free TQFP

512K x 18 GS880F18BGT-5.5

512K x 18 GS880F18BGT-6.5

512K x 18 GS880F18BGT-7.5

256K x 32 GS880F32BGT-4.5

5.5

6.5

7.5

4.5

5

256K x 32

GS880F32BGT-5

256K x 32 GS880F32BGT-5.5

256K x 32 GS880F32BGT-6.5

256K x 32 GS880F32BGT-7.5

256K x 36 GS880F36BGT-4.5

5.5

6.5

7.5

4.5

5

256K x 36

GS880F36BGT-5

256K x 36 GS880F36BGT-5.5

256K x 36 GS880F36BGT-6.5

256K x 36 GS880F36BGT-7.5

512K x 18 GS880F18BGT-4.5I

5.5

6.5

7.5

4.5

5

512K x 18

GS880F18BGT-5I

I

512K x 18 GS880F18BGT-5.5I

512K x 18 GS880F18BGT-6.5I

512K x 18 GS880F18BGT-7.5I

256K x 32 GS880F32BGT-4.5I

5.5

6.5

7.5

4.5

5

I

256K x 32

GS880F32BGT-5I

I

256K x 32 GS880F32BGT-5.5I

256K x 32 GS880F32BGT-6.5I

256K x 32 GS880F32BGT-7.5I

256K x 36 GS880F36BGT-4.5I

5.5

6.5

7.5

4.5

5

I

256K x 36

GS880F36BGT-5I

I

256K x 36 GS880F36BGT-5.5I

256K x 36 GS880F36BGT-6.5I

5.5

6.5

7.5

I

256K x 36 GS880F36BGT-7.5I

I

Notes:

1. Customers requiring delivery in Tape and Reel should add the character “T” to the end of the part number. Example: GS880F18BT-5T.

2. The speed column indicates the cycle frequency (MHz) of the device in Pipeline mode and the latency (ns) in Flow Through mode. Each

device is Pipeline/Flow through mode-selectable by the user.

3. T = C = Commercial Temperature Range. T = I = Industrial Temperature Range.

A

4. GSI offers other versions this type of device in many different configurations and with a variety of different features, only some of which are

covered in this data sheet. See the GSI Technology web site (www.gsitechnology.com) for a complete listing of current offerings.

Rev: 1.04 6/2007

22/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

GS880F18/32/36BT-4.5/5/5.5/6.5/7.5

9Mb Sync SRAM Datasheet Revision History

DS/DateRev. Code: Old;

New

Types of Changes

Format or Content

Page;Revisions;Reason

• Creation of new datasheet

880F18B_r1

• Removed erroneous speed bins

• Added 4.5 and 5.0 ns speed bins

• Removed Preliminary banner due to qualification of parts

880F18B_r1;

880F18B_r1_01

Content/Format

• Added Pb-free information for TQFP

• Updated Truth Tables (pg. 8, 9)

880F18B_r1_01;

880F18B_r1_02

Content/Format

Content

880F18B_r1_02;

880F18B_r1_03

Rev: 1.04 6/2007

23/23

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.


型号：	GS880F36BT-6.5T
厂家：	GSI TECHNOLOGY
描述：	Cache SRAM, 256KX36, 6.5ns, CMOS, PQFP100, TQFP-100 静态存储器内存集成电路
文件：	总23页 (文件大小：1398K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

GS880F36BT-6.5T [GSI]

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