JANUARY
2008
January 2007
AS6C8008
X 8 BITCMOS
LOW SRAM
POWER CMOS SRAM
1024K X 8 BIT SUPER 512K
LOW POWER
FEATURES
GENERAL DESCRIPTION
Fast access time : 55ns
Low power consumption:
Operating current : 30mA (TYP.)
Standby current : 6µA (TYP.) LL-version
Single 2.7V ~ 5.5V power supply
All inputs and outputs TTL compatible
Fully static operation
Tri-state output
Data retention voltage : 1.5V (MIN.)
Lead free and green package available
Package : 44-pin 400 mil TSOP-II
48-ball 6mm x 8mm TFBGA
The AS6C8008 is a 8,388,608-bit low power
CMOS static random access memory organized as
1,048,576 words by 8 bits. It is fabricated using very
high performance, high reliability CMOS technology.
Its standby current is stable within the range of
operating temperature.
The AS6C8008 is well designed for very low
power system applications, and particularly well
suited for battery back-up nonvolatile memory
application.
The AS6C8008 operates from a single power
supply of 2.7V ~ 5.5V and all inputs and outputs are
fully TTL compatible
PRODUCT FAMILY
Product
Family
AS6C8008(I)
Operating
Temperature
-40 ~ 85℃
Vcc Range
2.7 ~ 5.5V
FUNCTIONAL BLOCK DIAGRAM
Speed
55ns
Power Dissipation
Standby(ISB1,TYP.) Operating(Icc,TYP.)
6µA(LL)
30mA
PIN DESCRIPTION
SYMBOL
Vcc
Vss
A0-A19
DECODER
DQ0-DQ7
I/O DATA
CIRCUIT
CE#
CE2
WE#
OE#
CONTROL
CIRCUIT
JANUARY/2008, V 1.0
1024Kx8
MEMORY R
ARAY
DESCRIPTION
A0 - A19
Address Inputs
DQ0 – DQ7
Data Inputs/Outputs
CE#, CE2
Chip Enable Inputs
WE#
Write Enable Input
OE#
Output Enable Input
VCC
Power Supply
VSS
Ground
NC
No Connection
COLUMN I/O
Alliance Memory Inc.
Page 1 of 11
JANUARY
2008
January 2007
AS6C8008
X 8 BIT
LOW
POWER CMOS SRAM
1024K X 8 BIT SUPER 512K
LOW POWER
CMOS
SRAM
PIN CONFIGURATION
1
44
A5
A3
2
43
A6
A2
3
42
A7
A1
4
41
OE#
A0
5
40
CE2
CE#
6
39
A8
NC
7
38
NC
NC
8
37
NC
DQ0
9
36
DQ7
DQ1
10
35
DQ6
Vcc
11
34
Vss
33
Vcc
32
DQ5
31
DQ4
30
Vss
12
DQ2
13
DQ3
14
NC
15
AS6C8008
A4
A
NC
OE#
A0
B
NC
NC
A3
NC
C
DQ0
NC
D
Vss
E
A2
CE2
A4
CE#
NC
A5
A6
NC
DQ4
DQ1
A17
A7
DQ5
Vcc
Vcc
DQ2
NC
A16
DQ6
Vss
F
DQ3
NC
A14
A15
NC
DQ7
A1
NC
16
29
NC
WE#
17
28
A9
A19
18
27
A10
A18
19
26
A11
A17
20
25
A12
G
NC
NC
A12
A13 WE#
NC
A16
21
24
A13
H
A18
A8
A9
A10
A11
A19
A15
22
23
A14
1
2
3
4
TFBGA
5
6
TSOP-II
JANUARY/2008, V 1.0
Alliance Memory Inc.
Page 2 of 11
JANUARY
2008
January 2007
AS6C8008
X 8 BITCMOS
LOW SRAM
POWER CMOS SRAM
1024K X 8 BIT SUPER 512K
LOW POWER
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Voltage on VCC relative to VSS
Voltage on any other pin relative to VSS
SYMBOL
VT1
VT2
Operating Temperature
Storage Temperature
Power Dissipation
DC Output Current
Soldering Temperature (under 10 sec)
RATING
-0.5 to 6.5
-0.5 to VCC+0.5
UNIT
V
V
TA
-40 to 85(I grade)
℃
TSTG
PD
IOUT
-65 to 150
1
50
260
℃
W
mA
℃
TSOLDER
*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 or any other conditions above those indicated in the operational sections of this
specification is not implied. Exposure to the absolute maximum rating conditions for extended period may affect device reliability.
TRUTH TABLE
MODE
CE#
Standby
Output Disable
Read
Write
Note:
H
X
L
L
L
CE2
X
L
H
H
H
OE#
X
X
H
L
X
WE#
X
X
H
H
L
S UPPLY CUR RENT
ISB1
ISB1
ICC,ICC1
ICC,ICC1
ICC,ICC1
I/O OPERATION
High-Z
High-Z
High-Z
DOUT
DIN
H = VIH, L = VIL, X = Don't care.
DC ELECTRICAL CHARACTERISTICS
SYMBOL
TEST CONDITION
MIN.
PARAMETER
Supply Voltage
VCC
*1
Input High Voltage
VIH
*2
Input Low Voltage
VIL
Input Leakage Current
ILI
VCC ≧ VIN ≧ VSS
Output Leakage
VCC ≧ VOUT ≧ VSS
ILO
Output Disabled
Current
Output High Voltage
VOH IOH = -1mA
Output Low Voltage
VOL
IOL = 2mA
Cycle time = Min.
CE# = VIL and CE2 = VIH
ICC
- 55
II/O = 0mA
Other pins at VIL or VIH
Average Operating
Power supply Current
Cycle time = 1µs
CE#≦0.2V and CE2≧VCC-0.2V
ICC1
II/O = 0mA
Other pins at 0.2V or VCC-0.2V
CE# ≧ VCC-0.2V
Standby Power
ISB1
or CE2≦0.2V
Supply Current
Other pins at 0.2V or VCC-0.2V
JANUARY/2008, V 1.0
Alliance Memory Inc.
TYP.
2.7
2.4
- 0.2
-1
*4
3.0
-
MAX.
UNIT
5.5
V
VCC+0.3
V
0.6
V
1
µA
-1
-
1
µA
2.4
-
2.7
-
0.4
V
V
-
30
60
mA
-
4
12
mA
-
6
50
µA
Page 3 of 11
JANUARY
2008
January 2007
AS6C8008
X 8 BIT
LOW
POWER CMOS SRAM
1024K X 8 BIT SUPER 512K
LOW POWER
CMOS
SRAM
Notes:
1. VIH(max) = VCC + 3.0V for pulse width less than 10ns.
2. VIL(min) = VSS - 3.0V for pulse width less than 10ns.
3. Over/Undershoot specifications are characterized, not 100% tested.
4. Typical values are included for reference only and are not guaranteed or tested.
Typical valued are measured at VCC = VCC(TYP.) and TA = 25℃
CAPACITANCE (TA = 25? , f = 1.0MHz)
PARAMETER
Input Capacitance
Input/Output Capacitance
SYMBOL
CIN
CI/O
MIN.
MAX
6
8
-
UNIT
pF
pF
Note : These parameters are guaranteed by device characterization, but not production tested.
AC TEST CONDITIONS
Input Pulse Levels
Input Rise and Fall Times
Input and Output Timing Reference Levels
Output Load
0.2V to VCC - 0.2V
3ns
1.5V
CL = 30pF + 1TTL, IOH/IOL = -1mA/2mA
AC ELECTRICAL CHARACTERISTICS
(1) READ CYCLE
PARAMETER
Read Cycle Time
Address Access Time
Chip Enable Access Time
Output Enable Access Time
Chip Enable to Output in Low-Z
Output Enable to Output in Low-Z
Chip Disable to Output in High-Z
Output Disable to Output in High-Z
Output Hold from Address Change
(2) WRITE CYCLE
PARAMETER
Write Cycle Time
Address Valid to End of Write
Chip Enable to End of Write
Address Set-up Time
Write Pulse Width
Write Recovery Time
Data to Write Time Overlap
Data Hold from End of Write Time
Output Active from End of Write
Write to Output in High-Z
SYM.
AS6C8008
UNIT
AS6C8008
UNIT
tRC
tAA
tACE
tOE
tCLZ
tOLZ
tCHZ
tOHZ
tOH
SYM.
tWC
tAW
tCW
tAS
tWP
tWR
tDW
tDH
tOW
tWHZ
*These parameters are guaranteed by device characterization, but not production tested.
JANUARY/2008, V 1.0
Alliance Memory Inc.
Page 4 of 11
JANUARY
2008
January 2007
AS6C8008
X 8 BIT
LOW
POWER CMOS SRAM
1024K X 8 BIT SUPER 512K
LOW POWER
CMOS
SRAM
TIMING WAVEFORMS
READ CYCLE 1 (Address Controlled) (1,2)
tRC
Address
tAA
Dout
tOH
Previous Data Valid
Data Valid
READ CYCLE 2 (CE# and CE2 and OE# Controlled) (1,3,4,5)
tRC
Address
tAA
CE#
tACE
CE2
OE#
tOE
tOH
tOHZ
tCHZ
tOLZ
tCLZ
Dout
High-Z
Data Valid
High-Z
Notes :
1.WE# is high for read cycle.
2.Device is continuously selected OE# = low, CE# = low., CE2 = high.
3.Address must be valid prior to or coincident with CE# = low, CE2 = high; otherwise tAA is the limiting parameter.
4.tCLZ, tOLZ, tCHZ and tOHZ are specified with CL = 5pF. Transition is measured ±500mV from steady state.
5.At any given temperature and voltage condition, tCHZ is less than tCLZ , tOHZ is less than tOLZ.
JANUARY/2008, V 1.0
Alliance Memory Inc.
Page 5 of 11
JANUARY
2008
January 2007
AS6C8008
X 8 BIT
LOW
POWER CMOS SRAM
1024K X 8 BIT SUPER 512K
LOW POWER
CMOS
SRAM
WRITE CYCLE 1 (WE# Controlled) (1,2,3,5,6)
tWC
Address
tAW
CE#
tCW
CE2
tAS
tWP
tWR
WE#
tWHZ
Dout
T OW
High-Z
(4)
(4)
tDW
tDH
Data Valid
Din
WRITE CYCLE 2 (CE# and CE2 Controlled) (1,2,5,6)
tWC
Address
tAW
CE#
tAS
tWR
tCW
CE2
tWP
WE#
tWHZ
Dout
(4)
High-Z
tDW
Din
tDH
Data Valid
Notes :
1.WE#, CE# must be high or CE2 must be low during all address transitions.
2.A write occurs during the overlap of a low CE#, high CE2, low WE#.
3.During a WE#controlled write cycle with OE# low, tWP must be greater than tWHZ + tDW to allow the drivers to turn off and data to be
placed on the bus.
4.During this period, I/O pins are in the output state, and input signals must not be applied.
5.If the CE#low transition and CE2 high transition occurs simultaneously with or after WE# low transition, the outputs remain in a high
impedance state.
6.tOW and tWHZ are specified with CL = 5pF. Transition is measured ±500mV from steady state.
JANUARY/2008, V 1.0
Alliance Memory Inc.
Page 6 of 11
JANUARY
2008
January 2007
AS6C8008
X 8 BITCMOS
LOW SRAM
POWER CMOS SRAM
1024K X 8 BIT SUPER 512K
LOW POWER
DATA RETENTION CHARACTERISTICS
PARAMETER
VCC for Data Retention
Data Retention Current
SYMBOL TEST CONDITION
VDR CE# >
_ VCC - 0.2V or CE2 >_ 0.2V
VCC = 1.5V
IDR
CE# >
_ VCC - 0.2V or CE2 >_ 0.2V
Other pins at 0.2V or VCC - 0.2V
Chip Disable to Data
Retention Time
tCDR
Recovery Time
tRC* = Read Cycle Time
MIN.
1.5
-
See Data Retention
Waveforms (below)
tR
DATA RETENTION WAVEFORM
Low Vcc Data Retention Waveform (1)
TYP.
-
MAX. UNIT
5.5
V
50
4
µA
0
-
-
ns
tRC*
-
-
ns
(CE# controlled)
> 1.5V
VDR _
Vcc
Vcc(min.)
Vcc(min.)
tCDR
CE#
VIH
Low Vcc Data Retention Waveform (2)
tR
_ Vcc-0.2V
CE# >
VIH
(CE2 controlled)
> 1.5V
VDR _
Vcc
Vcc(min.)
Vcc(min.)
tCDR
CE2
VIL
JANUARY/2008, V 1.0
tR
_ 0.2V
CE2 >
Alliance Memory Inc.
VIL
Page 7 of 11
JANUARY
2008
January 2007
AS6C8008
X 8 BIT
LOW
POWER CMOS SRAM
1024K X 8 BIT SUPER 512K
LOW POWER
CMOS
SRAM
PACKAGE OUTLINE DIMENSION
θ
44-pin 400mil TSOP-II Package Outline Dimension
SYMBOLS
A
A1
A2
b
c
D
E
E1
e
L
ZD
y
Θ
DIMENSIONS IN MILLMETERS
MIN.
NOM.
MAX.
1.20
0.05
0.10
0.15
0.95
1.00
1.05
0.30
0.45
0.12
0.21
18.212
18.415
18.618
11.506
11.760
12.014
9.957
10.160
10.363
0.800
0.40
0.50
0.60
0.805
0.076
o
o
o
3
6
0
JANUARY/2008, V 1.0
DIMENSIONS IN MILS
MIN.
NOM.
MAX.
47.2
2.0
3.9
5.9
37.4
39.4
41.3
11.8
17.7
4.7
8.3
717
725
733
453
463
473
392
400
408
31.5
15.7
19.7
23.6
31.7
3
o
o
o
0
3
6
Alliance Memory Inc.
Page 8 of 11
JANUARY
2008
January 2007
AS6C8008
X 8 BIT
LOW
POWER CMOS SRAM
1024K X 8 BIT SUPER 512K
LOW POWER
CMOS
SRAM
48-ball 6mm × 8mm TFBGA Package Outline Dimension
JANUARY/2008, V 1.0
Alliance Memory Inc.
Page 9 of 11
JANUARY
2008
January 2007
AS6C8008
XCMOS
8 BITSRAM
LOW POWER CMOS SRAM
1024K X 8 BIT LOW512K
POWER
ORDERING INFORMATION
Alliance
Organization
VCC Range
Package
Operating Temp
Speed
ns
AS6C8008-55ZIN
1024K x 8
2.7 - 5.5V
44pin TSOP II
Industrial ~ -40 C - 85 C
55
AS6C8008-55BIN
1024K x 8
2.7 - 5.5V
48ball TFBGA
Industrial ~ -40 C - 85 C
55
PART NUMBERING SYSTEM
AS6C
8008
-55
Device Number
low power
S RAM prefix
380 =8M
08 = x8
JANUAR/2008, V 1.0
Access
Time
X
X
Package Option
Temperature Range
Z - 44pin TSOP
I = Industrial
B = 48ball TFBGA
(-40 to + 85 C)
Alliance Memory Inc.
N
N = Lead Free
RoHS
compliant part
Page 10 of 11
JANUARY
2008
January 2007
AS6C8008
XCMOS
8 BITSRAM
LOW POWER CMOS SRAM
1024K X 8 BIT LOW512K
POWER
®
Alliance Memory, Inc
511 Taylor Way,
San Carlos, CA 94070, USA
Phone: 650-610-6800
Fax: 650-620-9211
Copyright © Alliance Memory
All Rights Reserved
www.alliancememory.com
© Copyright 2007 Alliance Memory, Inc. All rights reserved. Our three-point logo, our name and Intelliwatt are trademarks or registered trademarks ofAlliance.
All other brand and product names may be the trademarks of their respective companies. Alliance reserves the right to make changes to thisdocument and its
products at any time without notice. Alliance assumes no responsibility for any errors that may appear in this document. The datacontained herein represents
Alliance's best data and/or estimates at the time of issuance. Alliance reserves the right to change or correct this data at anytime, without notice. If the product
described herein is under development, significant changes to these specifications are possible. The information inthis product data sheet is intended to be
general descriptive information for potential customers and users, and is not intended to operate as, or provide,any guarantee or warrantee to any user or
customer. Alliance does not assume any responsibility or liability arising out of the application or use of anyproduct described herein, and disclaims any
express or implied warranties related to the sale and/or use of Alliance products including liability orwarranties related to fitness for a particular purpose,
merchantability, or infringement of any intellectual property rights, except as express agreed to inAlliance's Terms and Conditions of Sale (which are available
from Alliance). All sales of Alliance products are made exclusively according to Alliance'sTerms and Conditions of Sale. The purchase of products from
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third parties. Alliance does not authorize its products for use as critical components inlife-supporting systems where a malfunction or failure may reasonably be
expected to result in significant injury to the user, and the inclusion ofAlliance products in such life-supporting systems implies that the manufacturer assumes
all risk of such use and agrees to indemnify Alliance against allclaims arising from such use.
JANUARY/2008, V 1.0
Alliance Memory Inc.
Page 11 of 11