ETC GVT73256A16TS-10L

GALVANTECH, INC.
ASYNCHRONOUS
SRAM
GVT73256A16
REVOLUTIONARY PINOUT 256K X 16
256K x 16 SRAM
+3.3V SUPPLY
REVOLUTIONARY PINOUT
FEATURES
GENERAL DESCRIPTIO N
•
•
•
•
•
•
•
•
•
•
The GVT73256A16 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. 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.
The device offers a low power standby mode when chip
is not selected. This allows system designers to meet low
standby power requirements.
•
Fast access times: 10, 12, and 15ns
Fast OE# access times: 5, 6, and 7ns
Single +3.3V +0.3V 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
double-poly, double-metal process
Packaged in 44-pin, 400-mil SOJ and 44-pin, 400-mil
TSOP
OPTIONS
•
•
•
•
MARKING
Timing
10ns access
12ns access
15ns access
-10
-12
-15
Packages
44-pin SOJ (400 mil)
44-pin TSOP (400 mil)
J
TS
Power consumption
Standard
Low
Temperature
Commercial
Industrial
PIN ASSIGNMENT
44-Pin SOJ
44-Pin TSOP
None
L
None
I
(0°C to 70°C)
(-40°C to 85°C)
Galvantech, Inc. 3080 Oakmead Village Drive, Santa Clara, CA 95051
Tel (408) 566-0688 Fax (408) 566-0699 Web Site http://www.galvantech.com
Rev. 7/99
A0
A1
A2
A3
A4
CE#
DQ1
DQ2
DQ3
DQ4
VCC
VSS
DQ5
DQ6
DQ7
DQ8
WE#
A5
A6
A7
A8
A9
1
44
2
43
3
42
4
41
5
40
6
39
7
38
8
37
9
36
10
35
11
34
12
33
13
32
14
31
15
30
16
29
17
28
18
27
19
26
20
25
21
24
22
23
A17
A16
A15
OE#
BHE#
BLE#
DQ16
DQ15
DQ14
DQ13
VSS
VCC
DQ12
DQ11
DQ10
DQ9
NC
A14
A13
A12
A11
A10
Galvantech, Inc. reserves the right to chang
e
products or specifications without notice
.
GALVANTECH,INC.
GVT73256A16
REVOLUTIONARY PINOUT 256K X 16
FUNCTIONAL BLOCK DIAGRAM
VCC
BLE#
VSS
DQ1
MEMORY ARRAY
512 ROWS X 512 X 16
COLUMNS
I/O CONTROL
ROW DECODER
ADDRESS BUFFER
A0
DQ8
DQ9
DQ16
A17
COLUMN DECODER
July 22, 199 9
Rev. 7/99
2
POWER
DOWN
CE#
BHE#
WE#
OE#
Galvantech, Inc. reserves the right to change products or specifications without notice
.
GVT73256A16
REVOLUTIONARY PINOUT 256K X 16
GALVANTECH,INC.
TRUTH TABLE
MOD E
LOW BYTE READ (DQ1-DQ8)
HIGH BYTE READ (DQ9-DQ16)
WORD READ (DQ1-DQ16)
LOW BYTE WRITE (DQ1-DQ8)
HIGH BYTE WRITE (DQ9-DQ16)
WORD WRITE (DQ1-DQ16)
OUTPUT DISABLE
STANDBY
CE#
WE#
OE#
BLE#
BHE#
DQ1DQ8
DQ9DQ16
POWE R
L
L
L
L
L
L
L
L
H
H
H
L
L
L
X
H
L
L
L
X
X
X
X
H
L
H
L
L
H
L
H
X
H
L
L
H
L
L
H
X
Q
HIGH-Z
Q
D
HIGH-Z
D
HIGH-Z
HIGH-Z
HIGH-Z
Q
Q
HIGH-Z
D
D
HIGH-Z
HIGH-Z
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
H
X
X
X
X
HIGH-Z
HIGH-Z
STANDBY
PIN DESCRIPTION S
SOJ & TSOP
Pin Number s
SYMBO L
TYPE
DESCRIPTIO N
1, 2, 3, 4, 5, 18, 19,
20, 21, 22, 23, 24,
25, 26, 27, 42, 43, 44
A0-A17
Input
Addresses Inputs: These inputs determine which cell is addressed .
17
WE#
Input
Write Enable: This input determines if the cycle is a READ or WRITE cycle. WE# is LOW
for a WRITE cycle and HIGH for a READ cycle .
6
CE#
Input
Chip Enable: This active LOW input is used to enable the device. When CE# is LOW, the
chip is selected. When CE# is HIGH, the chip is disabled and automatically goes into
standby power mode.
39, 40
BLE#, BHE#
Input
Byte Enable: These active LOW inputs allow individual bytes to be written or read. When
BLE# is LOW, the data is written to or read from the lower byte (DQ1-DQ8). When BHE# is
LOW, the data is written to or read from the higher byte (DQ9-DQ16) .
Input
Output Enable: This active LOW input enables the output drivers .
Input/Output SRAM Data I/O: Data inputs and data outputs. Lower byte is DQ1-DQ8 and upper byte is
DQ9-DQ16.
41
OE#
7, 8, 9, 10, 13, 14,
15, 16, 29, 30, 31,
32, 35, 36, 37, 38
DQ1-DQ16
11, 33
VCC
Supply
Power Supply: 3.3V +0.3V%
12, 34
VSS
Supply
Ground
July 22, 199 9
Rev. 7/99
3
Galvantech, Inc. reserves the right to change products or specifications without notice
.
GVT73256A16
REVOLUTIONARY PINOUT 256K X 16
GALVANTECH,INC.
*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.
ABSOLUTE MAXIMUM RATINGS *
Voltage on VCC Supply Relative to VSS........-0.5V to +4.6V
VIN ..........................................................-0.5V to VCC+0.5V
Storage Temperature (plastic) ..........................-55oC to +125o
Junction Temperature .....................................................+125o
Power Dissipation ...........................................................1.0W
Short Circuit Output Current .......................................50mA
DC ELECTRICAL CHARACTERISTICS AND RECOMMENDED OPERATING CONDITION S
(All Temperature Ranges; VCC = 3.3V +0.3V unless otherwise noted)
DESCRIPTIO N
CONDITION S
SYMBO L
MIN
MAX
UNIT S
NOTE S
Input High (Logic 1) voltage
VIH
2.2
VCC+0.5
V
1, 2
Input Low (Logic 0) Voltage
VIl
-0.5
0.8
V
1, 2
Input Leakage Current
0V < VIN < VCC
ILI
-5
5
uA
Output Leakage Current
Output(s) disabled,
0V < VOUT < VCC
ILO
-5
5
uA
Output High Voltage
IOH = -4.0mA
VOH
2.4
Output Low Voltage
IOL = 8.0mA
VOL
Supply Voltage
VCC
DESCRIPTIO N
CONDITION S
Power Supply
Current: Operating
TTL Standby
CMOS Standby
3.0
V
1
0.4
V
1
3.6
V
1
SYM
TYP
POWE R
-10
-12
-15
Device selected; CE# < VIL; VCC =MAX;
f=fMAX; outputs open
Icc
90
240
210
175
240
210
175
CE# >VIH; VCC = MAX; f=fMAX
ISB1
standard
low
standard
low
70
60
50
70
60
50
CE1# >VCC -0.2; VCC = MAX;
all other inputs < VSS +0.2 or >VCC -0.2;
all inputs static; f= 0
25
ISB2
0.1
standard
low
10
10
10
3.0
3.0
3.0
UNITS NOTES
mA
3, 14
mA
14
mA
14
CAPACITANCE
DESCRIPTIO N
CONDITION S
Input Capacitance
TA = 25oC; f = 1 MHz
VCC = 3.3V
Input/Output Capacitance (DQ)
July 22, 199 9
Rev. 7/99
SYMBO L
MAX
UNIT S
NOTE S
CI
6
pF
4
CI/O
8
pF
4
4
Galvantech, Inc. reserves the right to change products or specifications without notice
.
GVT73256A16
REVOLUTIONARY PINOUT 256K X 16
GALVANTECH,INC.
AC ELECTRICAL CHARACTERISTICS
(Note 5) (All Temperature Ranges; VCC = 3.3V +0.3V)
DESCRIPTIO N
- 10
- 12
MAX
MIN
- 15
SYM
MIN
MAX
MIN
MAX
UNITS NOTES
READ cycle time
tRC
10
Address access time
tAA
10
12
15
ns
tACE
10
12
15
ns
READ Cycl e
Chip Enable access time
12
15
tOH
3
3
3
Chip Enable to output in Low-Z
tLZCE
3
3
3
Chip disable to output in High- Z
tHZCE
Output hold from address chang e
Output Enable access time
5
tAOE
6
5
6
ns
ns
ns
4, 7
7
ns
4, 6, 7
7
ns
Output Enable to output in Low-Z
tLZOE
Output Enable to output in High-Z
tHZOE
5
6
7
ns
tABE
5
6
7
ns
Byte Enable access time
Byte Enable to output in Low-Z
tLZBE
Byte disable to output in High-Z
tHZBE
Chip Enable to power-up time
tPU
Chip disable to power-down tim e
tPD
0
0
0
0
0
0
5
0
ns
6
0
7
0
10
12
15
4, 6
ns
4, 7
ns
4, 6, 7
ns
4
ns
4
WRITE Cycl e
WRITE cycle time
tWC
10
12
15
ns
Chip Enable to end of write
tCW
8
8
9
ns
Address valid to end of write, with OE#
HIGH
tAW
8
8
9
ns
Address setup time
tAS
0
0
0
ns
Address hold from end of write
tAH
0
0
0
ns
WRITE pulse width
tWP2
10
10
11
ns
WRITE pulse width, with OE# HIG H
tWP1
8
8
9
ns
Data setup time
tDS
5
6
7
ns
Data hold time
tDH
0
0
0
ns
Write disable to output in Low-Z
tLZWE
3
4
5
Write Enable to output in High- Z
tHZWE
Byte Enable to end of write
July 22, 199 9
Rev. 7/99
tBW
5
8
6
8
7
9
5
ns
4, 7
ns
4, 6, 7
ns
Galvantech, Inc. reserves the right to change products or specifications without notice
.
GVT73256A16
REVOLUTIONARY PINOUT 256K X 16
GALVANTECH,INC.
OUTPUT LOADS
AC TEST CONDITIONS
DQ
Input pulse levels
0V to 3.0V
Input rise and fall times
1.5ns
Input timing reference levels
1.5V
Output reference levels
1.5V
Output load
Z0 = 50Ω
50Ω
30 pF
Vt = 1.5V
Fig. 1 OUTPUT LOAD EQUIVALENT
See Figures 1 and 2
3.3v
317Ω
DQ
5 pF
351Ω
Fig. 2 OUTPUT LOAD EQUIVALENT
NOTES
8.
WE# is HIGH for READ cycle.
1.
All voltages referenced to VSS (GND).
9.
2.
Overshoot:
Undershoot:
Device is continuously selected. Chip enable and output enables
are held in their active state.
VIH ≤ +6.0V for t ≤ tRC /2.
VIL ≤ -2.0V for t ≤ tRC /2
3.
Icc is given with no output current. Icc increases with greater
output loading and faster cycle times.
4.
This parameter is sampled.
5.
Test conditions as specified with the output loading as shown in
Fig. 1 unless otherwise noted.
6.
Output loading is specified with CL=5pF as in Fig. 2. Transition
is measured +500mV from steady state voltage.
7.
At any given temperature and voltage condition, tHZCE is less
than tLZCE and tHZWE is less than tLZWE.
10. Address valid prior to, or coincident with, latest occurring chip
enable.
11. tRC = Read Cycle Time.
12. Chip Enable and Write Enable can initiate and terminate a
WRITE cycle.
13. Capacitance derating applies to capacitance different from the
load capacitance shown in Fig. 1.
14. Typical values are measured at 3.3V, 25oC and 20ns cycle time.
DATA RETENTION ELECTRICAL CHARACTERISTICS (L Version Only )
DESCRIPTIO N
CONDITION S
SYMBO L
MIN
VDR
ICCDR
ICCDR
2
Chip Deselect to
Data Retention Time
tCDR
Operation Recovery Time
tR
Vcc for Retention Data
Data Retention Current
July 22, 199 9
Rev. 7/99
CE# >VCC -0.2;
all other inputs < VSS +0.2
or >VCC -0.2;
all inputs static; f= 0
Vcc = 2V
Vcc = 3V
6
TYP
MAX
UNIT S
NOTE S
0.2
1.6
mA
13
0.3
2.4
mA
13
0
ns
4
tRC
ns
4, 11
V
Galvantech, Inc. reserves the right to change products or specifications without notice
.
GVT73256A16
REVOLUTIONARY PINOUT 256K X 16
GALVANTECH,INC.
LOW VCC DATA RETENTION WAVEFOR M
DATA RETENTION MODE
3.0V
VCC
3.0V
VDR
t
CDR
CE#
tRC
VIH
VIL
READ CYCLE NO. 1(8, 9)
tRC
ADDR
VALID
tAA
tOH
Q
PREVIOUS DATA VALID
DATA VALID
READ CYCLE NO. 2(7, 8, 10, 12)
tRC
CE#
tABE
tHZCE
BLE#
BHE#
tAOE
tHZBE
tLZOE
OE#
tLZBE
tACE
tHZOE
tLZCE
Q
HIGH Z
DATA VALID
DON'T CARE
UNDEFINED
July 22, 199 9
Rev. 7/99
7
Galvantech, Inc. reserves the right to change products or specifications without notice
.
GVT73256A16
REVOLUTIONARY PINOUT 256K X 16
GALVANTECH,INC.
WRITE CYCLE NO. 1(7, 12, 13)
(Write Enable Controlled with Output Enable OE# active LOW)
)
t
WC
ADDR
t
t
AW
AH
t
CW
CE#
t
BW
BLE#
BHE#
tAS
tWP2
WE#
tDS
D
tDH
DATA VALID
t
HZWE
tLZWE
Q
HIGH Z
WRITE CYCLE NO. 2(12, 13)
(Write Enable Controlled with Output Enable OE# inactive HIGH
)
t WC
ADDR
tAW
t
t AH
CW
CE#
t BW
BLE#
BHE#
t
tWP1
AS
WE#
tDS
D
Q
tDH
DATA VALID
HIGH Z
DON'T CARE
UNDEFINED
July 22, 199 9
Rev. 7/99
8
Galvantech, Inc. reserves the right to change products or specifications without notice
.
GVT73256A16
REVOLUTIONARY PINOUT 256K X 16
GALVANTECH,INC.
WRITE CYCLE NO. 3(12, 13)
(Chip Enable Controlled)
t WC
ADDR
t
t
AW
tAS
AH
tCW
CE#
t BW
BLE#
BHE#
t
WP1
WE#
tDS
D
tDH
DATA VALID
Q
HIGH Z
DON'T CARE
WRITE CYCLE NO. 4(12, 13)
(Byte Enable Controlled)
t
WC
ADDR
tAW
t AH
tAS
tBW
BLE#
BHE#
t CW
CE#
tWP1
WE#
t
D
Q
DS
t
DH
DATA VALID
HIGH Z
DON'T CARE
July 22, 199 9
Rev. 7/99
9
Galvantech, Inc. reserves the right to change products or specifications without notice
.
GVT73256A16
REVOLUTIONARY PINOUT 256K X 16
GALVANTECH,INC.
Package Dimension s
44-pin 400 Mil Plastic SOJ (J)
1.129 (28.68)
1.123 (28.52)
.405 (10.29)
.395 (10.03)
.445 (11.30)
.435 (11.05)
PIN #1 INDEX
.148 (3.76)
.138 (3.51)
.050 (1.27) TYP
.030 (0.76)
MIN
.095 (2.41)
.080 (2.03)
SEATING
PLANE
.020 (0.51)
.015 (0.38)
MAX
MIN
Note: All dimensions in inches (millimeters)
.380 (9.65)
.360 (9.14)
or typical, min where noted.
44-pin 400 Mil Plastic TSOP (TS)
.741 (18.81)
.721 (18.31)
.402 (10.21)
.398 (10.11)
PIN #1 INDEX
.467 (11.86)
.459 (11.66)
.0315 (0.80) TYP
.007 (0.18)
.005 (0.12)
SEATING
PLANE
.018 (0.45)
.010 (0.25)
Note: All dimensions in inches (millimeters)
July 22, 199 9
Rev. 7/99
MAX
MIN
.032 (0.80)
.047 (1.20)
MAX
.008 (0.20)
.002 (0.05)
.024 (0.60)
.016 (0.40)
or typical, max where noted.
10
Galvantech, Inc. reserves the right to change products or specifications without notice
.
GALVANTECH,INC.
GVT73256A16
REVOLUTIONARY PINOUT 256K X 16
Ordering Information
GVT 73256A16 XX - XX X X
Galvantech Prefix
Temperature (Blank = Commercial
I = Industrial)
Power (Blank= Standard,
L= Low Power)
Part Number
Speed ( 10 = 10ns, 12 = 12ns
15 = 15ns)
Package (J = 400 mil SOJ,
TS = TSOP TYPE II)
July 22, 199 9
Rev. 7/99
11
Galvantech, Inc. reserves the right to change products or specifications without notice
.