APRIL 2010
AS6C1616
1024K X 16 BIT LOW POWER CMOS SRAM
FEATURES
GENERAL DESCRIPTION
The AS6C1616 is a 16,777,216-bit low power
CMOS static random access memory organized as
1,048,576 words by 16 bits. It is fabricated using
very high performance, high reliability CMOS
technology. Its standby current is stable within the
range of operating temperature.
Fast access time : 55ns
Low power consumption:
Operating current : 45/30mA (TYP.)
Standby current : 10µA (TYP.) LL-version
4µA (TYP.) SL-version
Single 2.7V ~ 3.6V power supply
All inputs and outputs TTL compatible
Fully static operation
Tri-state output
Data byte control : LB# (DQ0 ~ DQ7)
UB# (DQ8 ~ DQ15)
Data retention voltage : 1.2V (MIN.)
Green package available
Package : 48-pin 12mm x 20mm TSOP-I
The AS6C1616 is well designed for low power
application, and particularly well suited for battery
back-up nonvolatile memory application.
The AS6C1616 operates from a single power
supply of 2.7V ~ 3.6V and all inputs and outputs are
fully TTL compatible
PRODUCT FAMILY
Product
Family
AS6C1616(I)
Operating
Temperature
-40 ~ 85℃
Vcc Range
2.7 ~ 3.6V
FUNCTIONAL BLOCK DIAGRAM
DQ0-DQ7
Lower Byte
DQ8-DQ15
Upper Byte
CE#
CE2
WE#
OE#
LB#
UB#
55ns
Power Dissipation
Standby(ISB1,TYP.) Operating(Icc,TYP.)
10µA (LL)/4µA(SL)
45/30mA
PIN DESCRIPTION
Vcc
Vss
A0-A19
Speed
SYMBOL
DESCRIPTION
A0 - A19
Address Inputs
DQ0 – DQ15 Data Inputs/Outputs
DECODER
I/O DATA
CIRCUIT
1024Kx16
MEMORY ARRAY
CE#, CE2
Chip Enable Input
WE#
Write Enable Input
OE#
Output Enable Input
LB#
Lower Byte Control
UB#
Upper Byte Control
VCC
Power Supply
VSS
Ground
COLUMN I/O
CONTROL
CIRCUIT
APRIL/2010 V1.b
ALLIANCE MEMORY
PAGE 1 of 11
APRIL 2010
AS6C1616
1024K X 16 BIT LOW POWER CMOS SRAM
PIN CONFIGURATION
A15
A14
A13
A12
A11
A10
A9
A8
A19
NC
WE#
CE2
NC
UB#
LB#
A18
A17
A7
A6
A5
A4
A3
A2
A1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
AS6C1616
A16
NC
Vss
DQ15
DQ7
DQ14
DQ6
DQ13
DQ5
DQ12
DQ4
Vcc
DQ11
DQ3
DQ10
DQ2
DQ9
DQ1
DQ8
DQ0
OE#
Vss
CE#
A0
TSOP-I
ABSOLUTE MAXIMUN RATINGS*
PARAMETER
Voltage on VCC relative to VSS
Voltage on any other pin relative to VSS
Operating Temperature
Storage Temperature
Power Dissipation
DC Output Current
SYMBOL
VT1
VT2
RATING
-0.5 to 4.6
-0.5 to VCC+0.5
TA
-40 to 85(I grade)
TSTG
PD
IOUT
-65 to 150
1
50
UNIT
V
V
℃
℃
W
mA
*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.
APRIL/2010 V1.b
ALLIANCE MEMORY
PAGE 2 of 11
APRIL 2010
AS6C1616
1024K X 16 BIT LOW POWER CMOS SRAM
TRUTH TABLE
MODE
CE#
CE2
OE#
WE#
LB#
UB#
H
X
X
L
L
L
L
L
L
L
L
X
L
X
H
H
H
H
H
H
H
H
X
X
X
H
H
L
L
L
X
X
X
X
X
X
H
H
H
H
H
L
L
L
X
X
H
L
X
L
H
L
L
H
L
X
X
H
X
L
H
L
L
H
L
L
Standby
Output Disable
Read
Write
Note:
H = VIH, L = VIL, X = Don't care.
I/O OPERATION
SUPPLY CURRENT
DQ0-DQ7 DQ8-DQ15
High – Z
High – Z
ISB,ISB1
High – Z
High – Z
High – Z
High – Z
High – Z
High – Z
ICC,ICC1
High – Z
High – Z
High – Z
DOUT
ICC,ICC1
High – Z
DOUT
DOUT
DOUT
High – Z
DIN
ICC,ICC1
High – Z
DIN
DIN
DIN
DC ELECTRICAL CHARACTERISTICS
SYMBOL
TEST CONDITION
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
Current
Output Disabled
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# = VIH or CE2 = VIL
ISB
Other pins at VIL or VIH
ISB1
CE# ≧VCC-0.2V
or CE2≦0.2V
Other pins at 0.2V
or VCC-0.2V
*5
SLI
TYP.
3.0
-
*4
MAX.
3.6
VCC+0.3
0.6
1
UNIT
V
V
V
µA
-1
-
1
µA
2.2
-
2.7
-
0.4
V
V
-
45
60
mA
-
8
16
mA
-
0.3
2
mA
-
10
100
µA
25℃
-
4
6
µA
40℃
-
4
6
µA
-
4
40
µA
LLI
Standby Power
Supply Current
MIN.
2.7
2.2
- 0.2
-1
SLI
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.
APRIL/2010 V1.b
ALLIANCE MEMORY
PAGE 3 of 11
APRIL 2010
AS6C1616
1024K X 16 BIT LOW POWER CMOS SRAM
4. Typical values are included for reference
only and are not
guaranteed or tested.
CC
A
Typical values are measured at VCC = VCC(TYP.) and T = 25℃
5. This parameter is measured at V = 3.0V
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
LB#, UB# Access Time
LB#, UB# to High-Z Output
LB#, UB# to Low-Z Output
(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
LB#, UB# Valid to End of Write
SYM.
AS6C1616-55
tRC
tAA
tACE
tOE
tCLZ
tOLZ
tCHZ
tOHZ
tOH
tBA
tBHZ
tBLZ
SYM.
AS6C1616-55
UNIT
tWC
tAW
tCW
tAS
tWP
tWR
tDW
tDH
tOW
tWHZ
tBW
*These parameters are guaranteed by device characterization, but not production tested.
APRIL/2010 V1.b
ALLIANCE MEMORY
PAGE 4 of 11
APRIL 2010
AS6C1616
1024K X 16 BIT 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
LB#,UB#
tBA
OE#
tBLZ
tCLZ
Dout
High-Z
tOLZ
tOE
tOH
tOHZ
tBHZ
tCHZ
Data Valid
High-Z
Notes :
1.WE#is high for read cycle.
2.Device is continuously selected OE# = low, CE# = low, CE2 = high, LB# or UB# = low.
3.Address must be valid prior to or coincident with CE# = low, CE2 = high, LB# or UB# = low transition; otherwise tAA is the limiting
parameter.
4.tCLZ, tBLZ, tOLZ, tCHZ, tBHZ and tOHZ are specified with CL = 5pF. Transition is measured ±500mV from steady state.
5.At any given temperature and voltage condition, t CHZ is less than tCLZ , tBHZ is less than tBLZ, tOHZ is less than tOLZ.
APRIL/2010 V1.b
ALLIANCE MEMORY
PAGE 5 of 11
APRIL 2010
AS6C1616
1024K X 16 BIT LOW POWER CMOS SRAM
WRITE CYCLE 1 (WE# Controlled) (1,2,3,5,6)
tWC
Address
tAW
CE#
tCW
CE2
tBW
LB#,UB#
tAS
tWP
tWR
WE#
tWHZ
Dout
TOW
High-Z
(4)
tDW
(4)
tDH
Data Valid
Din
WRITE CYCLE 2 (CE# and CE2 Controlled) (1,2,5,6)
tWC
Address
tAW
CE#
tAS
tWR
tCW
CE2
tBW
LB#,UB#
tWP
WE#
tWHZ
Dout
(4)
High-Z
tDW
Din
APRIL/2010 V1.b
tDH
Data Valid
ALLIANCE MEMORY
PAGE 6 of 11
APRIL 2010
AS6C1616
1024K X 16 BIT LOW POWER CMOS SRAM
WRITE CYCLE 3 (LB#,UB# Controlled) (1,2,5,6)
tWC
Address
tAW
tWR
CE#
tCW
tAS
CE2
tBW
LB#,UB#
tWP
WE#
tWHZ
Dout
(4)
High-Z
tDW
Din
tDH
Data Valid
Notes :
1.WE#,CE#, LB#, UB# 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#, LB# or UB# = low.
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#, LB#, UB# 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.
APRIL/2010 V1.b
ALLIANCE MEMORY
PAGE 7 of 11
APRIL 2010
AS6C1616
1024K X 16 BIT LOW POWER CMOS SRAM
DATA RETENTION CHARACTERISTICS
PARAMETER
SYMBOL
TEST CONDITION
VCC for Data Retention
VDR
CE#≧VCC - 0.2V or CE2≦0.2V
MIN.
1.2
TYP.
-
MAX.
3.6
UNIT
V
-
4
80
µA
25℃
-
2.5
5
µA
40℃
-
2.5
5
µA
-
2.5
40
µA
0
-
-
ns
tRC*
-
-
ns
LLI
Data Retention Current
IDR
VCC = 1.2V
CE# ≧VCC-0.2V or CE2≦0.2V
other pins at 0.2V or VCC-0.2V SLI
SLI
Chip Disable to Data
Retention Time
Recovery Time
tRC* = Read Cycle Time
tCDR
tR
See Data Retention
Waveforms (below)
DATA RETENTION WAVEFORM
Low Vcc Data Retention Waveform (1) (CE# controlled)
VDR ≧ 1.2V
Vcc
Vcc(min.)
Vcc(min.)
tCDR
CE#
VIH
tR
CE# ≧ Vcc-0.2V
VIH
Low Vcc Data Retention Waveform (2) (CE2 controlled)
VDR ≧ 1.2V
Vcc
Vcc(min.)
Vcc(min.)
tCDR
CE2
VIL
tR
CE2 ≦ 0.2V
VIL
Low Vcc Data Retention Waveform (3) (LB#, UB# controlled)
VDR ≧ 1.2V
Vcc
Vcc(min.)
Vcc(min.)
tCDR
LB#,UB#
APRIL/2010 V1.b
VIH
tR
LB#,UB# ≧ Vcc-0.2V
ALLIANCE MEMORY
VIH
PAGE 8 of 11
APRIL 2010
AS6C1616
1024K X 16 BIT LOW POWER CMOS SRAM
PACKAGE OUTLINE DIMENSION
48-pin 12mm x 20mm TSOP-I Package Outline Dimension
APRIL/2010 V1.b
ALLIANCE MEMORY
PAGE 9 of 11
APRIL 2010
AS6C1616
1024K X 16 BIT LOW POWER CMOS SRAM
ORDERING INFORMATION
Alliance
Organization
AS6C1616-55TIN
1024K x 16
VCC
Range
Package
Operating Temp
Speed
ns
2.7 - 3.6V
48pin TSOP-I
Industrial ~ -40 F - 85 F
55
PART NUMBERING SYSTEM
AS6C
1616
-55
X
X
N
Temperature
Device Number
low power
SRAM prefix
APRIL/2010 V1.b
16 =16M
16 =x16
Range
Access
Time
Package Option
48pin TSOP-I
ALLIANCE MEMORY
I = Industrial
(-40 to + 85 C)
N = Lead Free
RoHS
compliant part
PAGE 10 of 11
APRIL 2010
AS6C1616
1024K X 16 BIT LOW POWER CMOS SRAM
Alliance Memory, Inc
551 Taylor Way, Suite 1
San Carlos, CA 94070, USA
Phone: 650-610-6800
Fax: 650-620-9211
www.alliancememory.com
Copyright © Alliance Memory
All Rights Reserved
© Copyright 2010 Alliance Memory, Inc. All rights reserved. Our three-point logo, our name and Intelliwatt are trademarks or registered
trademarks of Alliance. All other brand and product names may be the trademarks of their respective companies. Alliance reserves the right to
make changes to this document and its products at any time without notice. Alliance assumes no responsibility for any errors that may appear in
this document. The data contained 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 in this product data sheet is intended to be general descriptive information for potential customers
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APRIL/2010 V1.b
ALLIANCE MEMORY
PAGE 11 of 11