Low power consumption:
Operating current : 30 mA (TYP.)
Standby current : 4 µA (TYP.)
Single 2.7V ~ 5.5V power supply
All outputs TTL compatible
Fully static operation
Tri-state output
Data retention voltage :1.5V (MIN.)
All products ROHS Compliant
Package : 32-pin 450 mil SOP;32-pin 600 mil P-DIP
32-pin 8mm x 20mm TSOP-I
32-pin 8mm x 13.4mm STSOP
36-ball 6mm x 8mm TFBGA
32-pin 400 mil TSOP-II
PRODUCT FAMILY
Vcc Range Speed
℃
The AS6C4008 is a 4,194,304-bit low power
CMOS static random access memory organized as
524,288 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 AS6C4008 is well designed for very low power
system applications, and particularly well suited for
battery back-up non-volatile memory application.
The AS6C400
8 op erates from a sing le p owe r
sup p ly of 2.7V~ 5.5Vand all inputs and outputs are
fully TTL compatible
*Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress
rating on
specification is not implied. Exposure to the absolute maximum rating conditions for extended period may affect device reliability.
ly and functional operation of the device or any other conditions above those indicated in the operational sections of this
o
TRUTH TABLE
Note: H = VIH, L = VIL, X = Don't care.
DC ELECTRICAL CHARACTERISTICS
*1
VIH
*1
VIL
≧
≧
IN
OUT
≧
Average Operating
Power supply Current
I
LO
I
CC
I
CC1
LI
CE# = 0.2V, I
CC
CC
= 0.2V, I
≧
I/O
I/O
SS
= 0mA
= 0mA
SB1
CC1
OUT
2.4 -
2.2 -
- 1 - 1
- 55 -
- 4 10
30 60
VCC+0.3
CC1
CC1
V
V
A
µ
mA
mA
SB1
CE# ≧V
Supply Current
Notes: 1. VIH(max) = VCC+ 3.0V for pulse width less than 10ns. VIL(min) = VSS- 3.0V for pulse width less than 10ns.
2.
Over/Undershoot specifications are characterized, not 100% tested.
3.
Typical values are included for reference only and are not guaranteed or tested.
cal valued are measured at VCC = VCC(TYP.) and TA = 25
Typi
25µA for special request
4.
I
AUG/09, v 1.4 Alliance Memory Inc
CC
- 0.2V
*4
?
Page 3 of 14
Page 4
AUGUST 2009
AS6C4008
512K X 8 BIT LOW POWER CMOS SRAM
PARAMETER
SYMBOL
MIN.
MAX
UNIT
Input Capacitance
C
-
6
pF
Input/Output Capacitance
C
-
8
pF
Input Pulse Levels
0.2V to V
CC
- 0.2V
Input Rise and Fall Times
3ns
Input and Output Timing Reference Levels
1.5V
Output Load
CL = 30pF + 1TTL, IOH/I
= -2mA/4mA
PARAMETER
SYM.
AS6C4008-55
UNIT
MIN.
MAX.
Read Cycle Time
t
55
-
ns
Address Access Time
t
-
55
ns
Chip Enable Access Time
t
-
55
ns
Output Enable Access Time
t
-
30
ns
Chip Enable to Output in Low-Z
t
*
10
-
ns
Output Enable to Output in Low-Z
t
*
5
-
ns
Chip Disable to Output in High-Z
t
*
-
20
ns
Output Disable to Output in High-Z
t
*
-
20
ns
Output Hold from Address Change
t
10
-
ns
AS6C4008-55
UNIT
MIN.
MAX.
Write Cycle Time
t
55
-
ns
Address Valid to End of Write
t
50
-
ns
Chip Enable to End of Write
t
50 -
ns
Address Set-up Time
t
0
-
ns
Write Pulse Width
t
WP
45 -
ns
Write Recovery Time
t
0 -
ns
Data to Write Time Overlap
t
25 -
ns
Data Hold from End of Write Time
t
0
ns
Output Active from End of Write
tOW*
5
-
ns
Write to Output in High-Z
t
*
-
20
ns
CAPACITANCE (TA = 25℃, f = 1.0MHz)
IN
I/O
Note : These parameters are guaranteed by device characterization, but not production tested.
AC TEST CONDITIONS
AC ELECTRICAL CHARACTERISTICS
(1) READ CYCLE
OL
RC
AA
ACE
OE
CLZ
OLZ
CHZ
OHZ
OH
(2) WRITE CYCLE
PARAMETER SYM.
WC
AW
CW
AS
WR
DW
DH
WHZ
*These parameters are guaranteed by device characterization, but not production tested.
AUG09 v1.4 Alliance Memory Inc Page 4 of 14
Page 5
AUGUST 2009
AS6C4008
512K X 8 BIT LOW POWER CMOS SRAM
TIMING WAVEFORMS
READ CYCLE 1 (Address Controlled) (1,2)
tRC
Address
Dout
Previous Data Valid
tAAtOH
READ CYCLE 2 (CE# and OE# Controlled) (1,3,4,5)
tRC
Address
CE#
OE#
Dout
tAA
tACE
tOEtOH
tOLZ
tCLZ
High-Z
Data Valid
Data Valid
tCHZ
tOHZ
High-Z
Notes :
1.
WE# is high for read cycle.
2.
Device is continuously selected OE# = low, CE# = low.
3.
Address must be valid prior to or coincident with CE# = low,; otherwise tAAis the limiting parameter.
4.t
CLZ, tOLZ, tCHZ and tOHZare specified with CL = 5pF. Transition is measured ±500mV from steady state.
5.At any gi
ven temperature and voltage condition, t
is less than t
CHZ
CLZ
, t
OHZ
is less than t
OLZ.
AUG09 v1.4 Alliance Memory Inc Page 5 of 14
Page 6
AUGUST 2009
AS6C4008
512K X 8 BIT LOW POWER CMOS SRAM
W
RITE CYCLE 1 (WE# Controlled) (1,2,3,5,6)
tWC
Address
tAW
CE#
tCW
tAS
WE#
WHZ
t
Dout
Din Data Valid
(4)
tWP tWR
High-Z
tDWtDH
WRITE CYCLE 2 (CE# Controlled) (1,2,5,6)
tWC
Address
tAW
T
OW
(4)
CE# tAS tWR
tCW
tWP
WE#
WHZ
t
Dout
Din Data Valid
Notes :
1.
WE#, CE# must be high during all address transitions.
2.
A write occurs during the overlap of a low CE#, 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
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 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.
the bus.
(4)
High-Z
tDWtDH
AUG09 v1.4 Alliance Memory Inc Page 6 of 14
Page 7
AUGUST 2009
AS6C4008
512K X 8 BIT LOW POWER CMOS SRAM
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
VCCfor Data Retention
V
CE# ≧ V
- 0.2V
1.5 - 5.5
V
V
= 1.5V
-LL
- 2 30
µ
A
-LLE/-LLI
- 2 30
µ
A
Chip Disable to Data
See Data Retention
Recovery Time
t
t
- - ns
DATA RETENTION CHARACTERISTICS
DR
Data Retention Current
Retention Time
t
RC
= Read Cycle Time
*
I
DR
t
CDR
R
CC
CE# ≧ V
Waveforms (below)
DATA RETENTION WAVEFORM
Vcc
CE
#
Vcc(min.)
CDR
t
V
IH
CC
- 0.2V
≧
1.5V
CC
V
DR
CE# ≧ Vcc-0.2V
0 - -
RC
*
Vcc(min.)
R
t
V
IH
ns
AUG09 v1.4 Alliance Memory Inc Page 7 of 14
Page 8
AUGUST 2009
AS6C4008
512K X 8 BIT LOW POWER CMOS SRAM
UNIT
SYM.
A
0.118 (MAX)
2.997 (MAX)
A1
0.004(MIN)
0.102(MIN)
A2
0.111(MAX)
2.82(MAX)
b
0.016(TYP)
0.406(TYP)
c
0.008(TYP)
0.203(TYP)
D
0.817(MAX)
20.75(MAX)
E
0.445 ±0.005
11.303 ±0.127
E1
0.555 ±0.012
14.097 ±0.305
e
0.050(TYP)
1.270(TYP)
L
0.0347 ±0.008
0.881 ±0.203
L1
0.055 ±0.008
1.397 ±0.203
S
0.026(MAX)
0.660 (MAX)
y
0.004(MAX)
0.101(MAX)
Θ
0o -10
o
0o -10
o
PACKAGE OUTLINE DIMENSION
32 pin 450 mil SOP Package Outline Dimension
INCH.(BASE) MM(REF)
AUG09 v1.4 Alliance Memory Inc Page 8 of 14
Page 9
AUGUST 2009
AS6C4008
512K X 8 BIT LOW POWER CMOS SRAM
UNIT
SYM.
A
0.047 (MAX)
1.20 (MAX)
A1
0.004 ±0.002
0.10 ±0.05
A2
0.039 ±0.002
1.00 ±0.05
0.008 + 0.002
- 0.001
0.20 + 0.05
-0.03
c
0.005 (TYP)
0.127 (TYP)
D
0.724 ±0.004
18.40 ±0.10
E
0.315 ±0.004
8.00 ±0.10
e
0.020 (TYP)
0.50 (TYP)
HD
0.787 ±0.008
20.00 ±0.20
L
0.0197 ±0.004
0.50 ±0.10
L1
0.0315 ±0.004
0.08 ±0.10
y
0.003 (MAX)
0.076 (MAX)
Θ
0
o
5
o
0
o
5
o
32
pin 8mm x 20mm TSOP-I Package Outline Dimension
b
INCH(BASE) MM(REF)
~
~
AUG09 v1.4 Alliance Memory Inc Page 9 of 14
Page 10
AUGUST 2009
AS6C4008
512K X 8 BIT LOW POWER CMOS SRAM
A
A2
c
e b E
0.254
UNIT
SYM.
A
0.049 (MAX)
1.25 (MAX)
A1
0.005 ±0.002
0.130 ±0.05
A2
0.039 ±0.002
1.00 ±0.05
b
0.008 ±0.01
0.20±0.025
c
0.005 (TYP)
0.127 (TYP)
D
0.465 ±0.004
11.80 ±0.10
E
0.315 ±0.004
8.00 ±0.10
e
0.020 (TYP)
0.50 (TYP)
HD
0.528±0.008
13.40 ±0.20.
L
0.0197 ±0.004
0.50 ±0.10
L1
0.0315 ±0.004
0.8 ±0.10
y
0.003 (MAX)
0.076 (MAX)
Θ
0
o
5
o
0
o
5
o
32
pin 8mm x 13.4mm STSOP Package Outline Dimension
1
HD
cL
32
12° (2x) 12° (2x)
16
D
16
1 32
INCH(BASE) MM(REF)
17
17
"A"
A1
"A" DETAIL VIEW
Seating Plane
SEATING PLANE
y
12° (2X)
12° (2X)
L1
L
GAUGE PLANE
0
AUG09 v1.4 Alliance Memory Inc Page 10 of 14
~
~
Page 11
AUGUST 2009
AS6C4008
512K X 8 BIT LOW POWER CMOS SRAM
36 ball 6mm × 8mm TFBGA Package Outline Dimension
AUG09 v1.4 Alliance Memory Inc Page 11 of 14
Page 12
AUGUST 2009
AS6C4008
512K X 8 BIT LOW POWER CMOS SRAM
32
-pin 400mil TSOP-Ⅱ Package Outline Dimension
AUG/09, v 1.0.a Alliance Memory Inc Page 12 of 14
Page 13
AUGUST 2009
AS6C4008
512K X 8 BIT LOW POWER CMOS SRAM
32 pin 600 mil P-DIP Package Outline Dimension
UNIT
SYM.
A1
A2
B
0.018 ± 0.005
0.457 ± 0.127
D
1.650 ± 0.005
41.910 ± 0.127
E
0.600 ± 0.010
15.240 ± 0.254
E1
e
0.100 (TYP)
2.540 (TYP)
eB
0.640 ± 0.020
16.256 ± 0.508.
L
0.130 ± 0.010
3.302 ± 0.254
S
0.075 ± 0.010
1.905 ± 0.254
Q1
0.070 ± 0.005
1.778 ± 0.127
INCH(BASE) MM(REF)
0.015 (MIN) 0.381 (MIN)
0.155 ± 0.005 3.937 ± 0.127
0.545 ± 0.00513.843 ± 0.127
Note : D/E1/S dimension do not include mold flash.
AUG09 v1.4 Alliance Memory Inc
Page 13 of 14
Page 14
AUGUST 2009
Alliance
Organization
VCC
Package
Operating
Temp
Speed
ns
AS6C4008-55PCN
512k x 8
5V
32pin 600mil DIP
Commercial ~
0º C to 70º C
55
AS6C4008-55SIN
512k x 8
5V
32pin 450mil SOP
Industrial ~
-40ºC to 85º C
55
AS6C4008-55TIN
512k x 8
5V
32pin TSOP 1 (8 x 20 mm)
-40ºC to 85º C
55
AS6C4008-55STIN
512k x 8
5V
32pin sTSOP (8 x 13.4 mm)
Industrial ~
-40ºC to 85º C
55
AS6C4008-55BIN
512k x 8
5V
36pin TFBGA (6mm x 8mm)
Industrial ~
-40ºC to 85º C
55
5V
32-pin 400mil TSOP 11
Industrial ~
-40ºC to 85º C
55
AS6C
4008
- 55
X
X
N
low
Device
Access
Package Options:
Temperature Range:
N = Lead
P = 32 pin 600 mil P-DIP
S = 32 pin 450 mil SOP
T = 32 pin TSOP 1 (8mm x 20 mm)
C = Commercial
power
Number
Z = 32-pin 400mil TSOP 11
(0ºC to +70º C)
Free ROHS
SRAM
40 = 4M
ST = 32 pin sTSOP (8mm x 13.4 mm)
I = Industrial
Compliant
prefix
08 = by 8
Time
B = 36 pin TFBGA (6mm x 8mm)
(-40º to +85º C)
Part
512K X 8 BIT LOW POWER CMOS SRAM
ORDERING INFORMATION
AS6C4008
Industrial ~
AS6C4008-55ZIN
512k x 8
PART NUMBERING SYSTEM
AUG09 v1.4 Alliance Memory Inc Page 14 of 14
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