GVT72256A16TS-12 Cypress Semiconductor Corp, GVT72256A16TS-12 Datasheet

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GVT72256A16TS-12

Manufacturer Part Number
GVT72256A16TS-12
Description
Manufacturer
Cypress Semiconductor Corp
Datasheet

Specifications of GVT72256A16TS-12

Density
4Mb
Access Time (max)
12ns
Sync/async
Asynchronous
Architecture
Not Required
Clock Freq (max)
Not RequiredMHz
Operating Supply Voltage (typ)
5V
Address Bus
18b
Package Type
TSOP-II
Operating Temp Range
0C to 70C
Number Of Ports
1
Supply Current
190mA
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
5.5V
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
44
Word Size
16b
Number Of Words
256K
Lead Free Status / Rohs Status
Not Compliant
FEATURES
• Fast access times: 10, 12, and 15ns
• Fast OE# access times: 5, 6, and 7ns
• Single +5V +10% power supply
• Fully static -- no clock or timing strobes necessary
• All inputs and outputs are TTL-compatible
• Three state outputs
• Center power and ground pins for greater noise immunity
• Easy memory expansion with CE# and OE# options
• Automatic CE# power down
• High-performance, low-power consumption, CMOS
• Packaged in 44-pin, 400-mil SOJ and 44-pin, 400-mil
OPTIONS
• Timing
• Packages
• Power consumption
• Temperature
Galvantech, Inc. 3080 Oakmead Village Drive, Santa Clara, CA 95051
Tel (408) 566-0688
Rev. 7/99
GALVANTECH
ASYNCHRONOUS
SRAM
double-poly, double-metal process
TSOP
10ns access
12ns access
15ns access
44-pin SOJ (400 mil)
44-pin TSOP (400 mil)
Standard
Low
Commercial
Industrial
Fax (408) 566-0699 Web Site http://www.galvantech.com
MARKING
-10
-12
-15
J
TS
None
L
None
I
(
(
0°C
-40°C
, INC.
to
70°C)
to
85°C)
REVOLUTIONARY PINOUT 256K X 16
GENERAL DESCRIPTIO N
SRAM using a four-transistor memory cell with a high
performance, silicon gate, low-power CMOS process.
Galvantech SRAMs are fabricated using double-layer
polysilicon, double-layer metal technology.
improved performance and noise immunity. Static design
eliminates the need for external clocks or timing strobes. For
increased system flexibility and eliminating bus contention
problems, this device offers chip enable (CE#), separate byte
enable controls (BLE# and BHE#) and output enable (OE#)
with this organization.
is not selected. This allows system designers to meet low
standby power requirements.
The GVT72256A16 is organized as a 262,144 x 16
This device offers center power and ground pins for
The device offers a low power standby mode when chip
256K x 16 SRAM
+5V SUPPLY
REVOLUTIONARY PINOUT
WE#
VCC
DQ5
DQ6
DQ7
DQ8
DQ1
DQ2
DQ3
DQ4
CE#
VSS
A1
A2
A3
A4
A0
A5
A6
A7
A8
A9
PIN ASSIGNMENT
10
11
12
13
14
15
16
17
18
19
20
21
22
1
2
3
4
5
6
7
8
9
44-Pin TSOP
44-Pin SOJ
GVT72256A16
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
Galvantech, Inc. reserves the right to chang e
products or specifications without notice .
BLE#
DQ16
DQ15
DQ14
DQ13
VSS
VCC
DQ12
DQ11
DQ10
DQ9
NC
A14
A13
A12
A11
A10
A17
A16
A15
OE#
BHE#

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GVT72256A16TS-12 Summary of contents

Page 1

... SUPPLY REVOLUTIONARY PINOUT GENERAL DESCRIPTIO N The GVT72256A16 is organized as a 262,144 x 16 SRAM using a four-transistor memory cell with a high performance, silicon gate, low-power CMOS process. Galvantech SRAMs are fabricated using double-layer polysilicon, double-layer metal technology. This device offers center power and ground pins for improved performance and noise immunity ...

Page 2

GALVANTECH FUNCTIONAL BLOCK DIAGRAM VCC VSS A0 A17 July 22, 199 9 Rev. 7/99 , REVOLUTIONARY PINOUT 256K X 16 MEMORY ARRAY 512 ROWS X 512 X 16 COLUMNS POWER COLUMN DECODER DOWN 2 GVT72256A16 BLE# DQ1 DQ8 DQ9 DQ16 ...

Page 3

... A0-A17 20, 21, 22, 23, 24, 25, 26, 27, 42, 43 WE# 6 CE# 39, 40 BLE#, BHE# 41 OE# Input/Output SRAM Data I/O: Data inputs and data outputs. Lower byte is DQ1-DQ8 and upper byte 10, 13, 14, DQ1-DQ16 15, 16, 29, 30, 31, 32, 35, 36, 37, 38 11, 33 VCC Supply 12, 34 VSS Supply July 22, 199 9 Rev ...

Page 4

GALVANTECH ABSOLUTE MAXIMUM RATINGS * Voltage on VCC Supply Relative to VSS........-0.5V to +7.0V V ..........................................................-0.5V to VCC+0.5V IN Storage Temperature (plastic) ..........................-55 Junction Temperature .....................................................+125 Power Dissipation ...........................................................1.2W Short Circuit Output Current .......................................50mA DC ELECTRICAL CHARACTERISTICS AND RECOMMENDED OPERATING ...

Page 5

GALVANTECH AC ELECTRICAL CHARACTERISTICS (Note 5) (All Temperature Ranges; VCC = 5V DESCRIPTIO N READ Cycl e READ cycle time Address access time Chip Enable access time Output hold from address chang e Chip Enable to output in Low-Z Chip ...

Page 6

GALVANTECH AC TEST CONDITIONS Input pulse levels Input rise and fall times Input timing reference levels Output reference levels Output load NOTES 1. All voltages referenced to VSS (GND). 2. Overshoot: V +7.0V for Undershoot: V -2.0V ...

Page 7

GALVANTECH LOW VCC DATA RETENTION WAVEFOR M VCC ADDR Q PREVIOUS DATA VALID CE# BLE# BHE# OE# Q July 22, 199 9 Rev. 7/99 , REVOLUTIONARY PINOUT 256K X 16 DATA RETENTION MODE 4.5V 4.5V ...

Page 8

GALVANTECH (Write Enable Controlled with Output Enable OE# active LOW) ) ADDR CE# BLE# BHE# WE (Write Enable Controlled with Output Enable OE# inactive HIGH ) ADDR CE# BLE# BHE# WE July 22, 199 9 Rev. ...

Page 9

GALVANTECH ADDR CE# BLE# BHE# WE ADDR BLE# BHE# CE# WE July 22, 199 9 Rev. 7/99 , REVOLUTIONARY PINOUT 256K X 16 (12, 13) WRITE CYCLE NO. 3 (Chip Enable Controlled ) ...

Page 10

GALVANTECH Package Dimension s 44-pin 400 Mil Plastic SOJ (J) .405 (10.29) .395 (10.03) PIN #1 INDEX SEATING PLANE Note: All dimensions in inches (millimeters) 44-pin 400 Mil Plastic TSOP (TS) .402 (10.21) .398 (10.11) PIN #1 INDEX SEATING PLANE ...

Page 11

GALVANTECH Ordering Information GVT 72256A16 Galvantech Prefix Part Number July 22, 199 9 Rev. 7/99 , REVOLUTIONARY PINOUT 256K Galvantech, Inc. reserves the right to change products or specifications without notice GVT72256A16 ...

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