Datasheet A62L256V-70LLU, A62L256V-70LL, A62L256V-55LLU, A62L256V, A62L256R-70LLU Datasheet (AMICC)
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A62L256 Series
Preliminary 32K X 8 BIT LOW VOLTAGE CMOS SRAM
Document Title
32K X 8 BIT LOW VOLTAGE CMOS SRAM
Revision History
Rev. No. History Issue Date Remark
1.0 Initial issue September 01, 1997
1.1 Modify 28-pin DIP, SOP and TSOP packages outline January 20, 1998
dimensions.
1.2 Modify 28-pin SOP and TSOP packages outline drawings June 17, 1998
and dimensions
1.3 Add -LLU type April 11, 2001
Change operating voltage Vccmax from 3.3V to 3.6V
1.4 Add Product Family in page 1 November 30, 2001
Delete ICC item
Add ICC2(typ.) ICCDR(typ.)
Change ISB1(typ.) ICCDR(max.)
Change ordering information from ICC1 to ICC2
PRELIMINARY (November, 2001, Version 1.4) AMIC Technology, Inc.
A62L256 Series
Preliminary 32K X 8 BIT LOW VOLTAGE CMOS SRAM
Features
n External Operating Voltage: 2.7V to 3.6V
n Access times: 55ns (max.): for VCC = 3.0V to 3.6V
70ns (max.): for VCC = 2.7V to 3.6V
n Current: Operating (ICC1): -55 series 18mA (typ.)
-70 series 12mA (typ.)
Standby (ISB1): 0.05µA (typ.)
n Extended operating temperature range: -40ºC to
+85ºC for -LLU series
n Full static operation, no clock or refreshing required
n All inputs and outputs are directly TTL-compatible
n Common I/O using three-state output
General Description
The A62L256 is a low operating current 262,144-bit static
random access memory organized as 32,768 words by 8
bits and operates on a low power voltage: 2.7V to 3.6V.
Inputs and three-state outputs are TTL compatible and
allow for direct interfacing with common system bus
structures.
Minimum standby power is drawn by this device when
CE is at a high level, independent of the other input
levels.
Data retention is guaranteed at a power supply voltage
as low as 2.0V.
n Data retention voltage: 2.0V (min.)
n Available in 28-pin DIP, SOP and TSOP (forward and
reverse type) packages
Product Family
Power Dissipation
Product Family
A62L256
Operating
Temperature
-40°C ~ +85°C
VCC
Range
Speed
2.7V~3.6V 55ns / 70ns
Data Retention
(ICCDR, Typ.)
0.02µA 0.05µA
1. Typical values are measured at VCC = 3.0V, TA = 25°C and not 100% tested.
2. Data retention current VCC = 2.0V.
Standby
(ISB1, Typ.)
Operating
(ICC2, Typ.)
1mA
Package
Type
28L DIP
28L SOP
28L TSOP
Pin Configurations
n DIP n SOP n TSOP
A14
A12
I/O
I/O
I/O
GND
A7
A6
A5
A4
A3
A2
A1
A0
0
1
2
1
2
3
4
A62L256
5
6
7
8
9
10
11
12
13
14 15
1
VCC
28
WE
27
A13
26
A8
25
A9
24
A11
23
OE
22
A10
21
CE
20
I/O
7
19
I/O6
18
I/O
5
17
I/O4
16
I/O
3
A14
A12
I/O
I/O
I/O
GND
A7
A6
A5
A4
A3
A2
A1
A0
0
1
2
2
3
4
5
A62L256M
6
7
8
9
10
11
12
13
14 15
VCC
28
WE
27
A13
26
A8
25
A9
24
A11
23
OE
22
A10
21
CE
20
I/O
7
19
I/O6
18
I/O
5
17
I/O4
16
I/O
3
A11
A13
WE
VCC
A14
A12
A12
A14
VCC
WE
A13
A11
OE
A9
A8
A7
A6
A5
A4
A3
A3
A4
A5
A6
A7
A8
A9
OE
~
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
~
A62L256V
~
~
~
~
A62L256R
~
~
28
A10
CE
27
26
I/O
I/O
I/O5
I/O4
I/O3
VSS
I/O
I/O
I/O
A0
A1
A2
A2
A1
A0
I/O0
I/O
I/O
VSS
I/O
I/O
I/O
I/O6
I/O7
CE
A10
7
6
2
1
0
1
2
3
4
5
25
24
23
22
21
20
19
18
17
16
15
28
27
26
25
24
23
22
21
20
19
18
17
16
15
PRELIMINARY (November, 2001, Version 1.4) 2 AMIC Technology, Inc.
A62L256 Series
Block Diagram
CE
OE
WE
A11
A14
I/O
I/O
A5
A9
0
7
CONTORL
CIRCUIT
ROW
DECODER
INPUT
DATA
CIRCUIT
512 X 512
MEMORY ARRAY
COLUMN I/O
COLUMN DECODER
A10A4A0
VCC
GND
Pin Descriptions - DIP/SOP
Pin No. Symbol Description
1-10, 21, 23-26 A0 - A14 Address Input
11-13, 15-19 I/O0 - I/O7 Data Input/Output
14 GND Ground
20
22
27
CE
OE
WE
28 VCC Power Supply
PRELIMINARY (November, 2001, Version 1.4) 3 AMIC Technology, Inc.
Chip Enable
Output Enable
Write Enable
Pin Description-TSOP
Pin No. Symbol Description
1
OE
2-5, 8-17, 28 A0 - A14 Address Input
7 VCC Power Supply
6
WE
18-20, 22-26 I/O0 - I/O7 Data Input/Output
21 GND Ground
27
CE
Output Enable
Write Enable
Chip Enable
A62L256 Series
Recommended DC Operating Conditions
(TA = 0°C to + 70°C or -40°C to +85°C)
Symbol Parameter Min. Typ. Max. Unit
VCC Supply Voltage 2.7 3.0 3.6 V
GND Ground 0 0 0 V
VIH Input High Voltage VCC * 0.7 - VCC + 0.3 V
VIL Input Low Voltage -0.3 0 +0.3 V
Absolute Maximum Ratings*
VCC to GND . . . . . . . . . . . . . . . . . . . . . -0.5V to +3.6V
IN, IN/OUT Volt to GND . . . . . . . . . -0.5V to VCC + 0.5V
Operating Temperature, Topr . . . . . . . . . . 0°C to +70°C
Storage Temperature, Tstg . . . . . . . . . -55°C to +125°C
Power Dissipation, PT . . . . . . . . . . . . . . . . . . . . . 0.7W
Soldering Temp. & Time . . . . . . . . . . . . . 260°C, 10 sec
DC Electrical Characteristics (TA = 0°C to + 70°C or -40ºC to +85ºC, VCC = 2.7V to 3.6V, GND = 0V)
*Comments
Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device.
These are stress ratings only. Functional operation of this
device at these or any other conditions above those
indicated in the operational sections of this specification
is not implied and exposure to absolute maximum rating
conditions for extended periods may affect device
reliability.
Symbol Parameter
Min. Typ. Max. Min. Typ. Max.
ILI
ILO
ICC1
ICC2
Typical values are measured at VCC = 3.0V, TA = 25°C and not 100% tested.
* Testing condition : TA = 25°C, VCC = 3.0V, Cycle Time = 55 ns
** Testing condition : TA = 25°C, VCC = 3.0V, Cycle Time = 70 ns
Input Leakage
Current
Output Leakage
Current
Dynamic
Operating Current
Dynamic
Operating Current
A62L256-55LL/55LLU A62L256-70LL/70LLU
- - 1 - - 1
- - 1 - - 1
- *18 25 - **12 20 mA
-
1
3
-
1
3
Unit Conditions
VIN = GND to VCC
µA
µA
VI/O = GND to VCC
Min. Cycle, Duty = 100%
mA
VIL = 0V, f = 1 MHz
II/O = 0 mA
CE = VIH or WE = VIL
CE = VIL, II/O = 0mA
CE = VIL, VIH = VCC
PRELIMINARY (November, 2001, Version 1.4) 4 AMIC Technology, Inc.
A62L256 Series
CE OE WE
DC Electrical Characteristics (continued)
Symbol Parameter
Min. Typ. Max. Min. Typ. Max.
ISB
ISB1
VOL Output Low
VOH Output High
Typical values are measured at VCC = 3.0V, TA = 25°C and not 100% tested.
Supply Current
Standby Power
Voltage
Voltage
A62L256-55LL/70LL A62L256-55LLU/70LLU
- - 50 - - 50
- 0.05 2 - 0.05 5
- - 0.3 - - 0.3 V IOL = 2.1mA
VCC - 0.3 - - VCC - 0.3 - - V IOH = -1.0mA
Unit Conditions
µA
µA
CE = VIH
CE ≥ VCC - 0.2V
VIN ≥ 0V
Truth Table
Mode
Standby H X X High Z ISB, ISB1
Output Disable L H H High Z ICC, ICC1, ICC2
I/O Operation Supply Current
Read L L H DOUT ICC, ICC1, ICC2
Write L X L DIN ICC, ICC1, ICC2
Note: X: H or L
Capacitance (TA = 25°C, f = 1.0 MHz)
Symbol Parameter Min. Max. Unit Conditions
CIN* Input Capacitance 6 pF VIN = 0V
CI/O* Input/Output Capacitance 8 pF VI/O = 0V
These parameters are sampled and not 100% tested.
PRELIMINARY (November, 2001, Version 1.4) 5 AMIC Technology, Inc.
A62L256 Series
AC Characteristics (TA = 0°C to +70°C or -40ºC to +85ºC)
A62L256-55LL/LLU
Symbol Parameter
Min. Max. Min. Max.
Read Cycle
tRC Read Cycle Time 55 - 70 - ns
tAA Address Access Time - 55 - 70 ns
tACE Chip Enable Access Time - 55 - 70 ns
tOE Output Enable to Output Valid - 30 - 35 ns
tCLZ Chip Enable to Output in Low Z 10 - 10 - ns
tOLZ Output Enable to Output in Low Z 5 - 5 - ns
tCHZ Chip Disable to Output in High Z - 20 - 25 ns
tOHZ Output Disable to Output in High Z - 20 - 25 ns
tOH Output Hold from Address Change 5 - 10 - ns
(VCC = 3.0V to 3.6V)
A62L256-70LL/LLU
(VCC = 2.7V to 3.6V)
Unit
Write Cycle
tWC Write Cycle Time 55 - 70 - ns
tCW Chip Enable to End of Write 50 - 60 - ns
tAS Address Set up Time 0 - 0 - ns
tAW Address Valid to End of Write 50 - 60 - ns
tWP Write Pulse Width 40 - 50 - ns
tWR Write Recovery Time 0 - 0 - ns
tWHZ Write to Output in High Z - 25 - 25 ns
tDW Data to Write Time Overlap 25 - 30 - ns
tDH Data Hold from Write Time 0 - 0 - ns
tOW Output Active from End of Write 5 - 5 - ns
Notes: tCHZ, tOHZ and tWHZ are defined as the time at which the outputs achieve the open circuit condition and are not
referred to output voltage levels.
PRELIMINARY (November, 2001, Version 1.4) 6 AMIC Technology, Inc.
A62L256 Series
Timing Waveforms
Read Cycle 1
(1)
tRC
Address
tAA
OE
DOUT
Read Cycle 2
Address
DOUT
CE
(1, 2, 4)
tCLZ
tOE
5
OLZ
t
tACE
5
tCHZ
tOH
5
tOHZ
5
tRC
tAA
tOH
tOH
PRELIMINARY (November, 2001, Version 1.4) 7 AMIC Technology, Inc.
A62L256 Series
Timing Waveforms (continued)
Read Cycle 3
Notes: 1. WE is high for Read Cycle.
2. Device is continuously enabled, CE = VIL.
3. Address valid prior to or coincident with CE transition low.
4. OE = VIL.
5. Transition is measured ±500mV from steady state. This parameter is sampled and not 100% tested.
Write Cycle 1
(Write Enable Controlled)
CE
DOUT
(1, 3, 4)
(6)
tCLZ
tACE
5
tCHZ
5
Address
CE
WE
DOUT
DIN
tWC
tAW
5
tCW
(4)
1
tAS
tWHZ
2
tWP
7
tWR
3
tDHtDW
7
tOW
PRELIMINARY (November, 2001, Version 1.4) 8 AMIC Technology, Inc.
A62L256 Series
Timing Waveforms (continued)
Write Cycle 2
(Chip Enable Controlled)
Address
CE
WE
(6)
tWC
tAW tWR
5
tCW
(4)
1
tAS
2
tWP
3
DIN
DOUT
tWHZ
tDW
7
tDH
Notes: 1. tAS is measured from the address valid to the beginning of Write.
2. A Write occurs during the overlap (tWP) of a low CE and a low WE.
3. tWR is measured form the earliest of CE or WE going high to the end of the Write cycle.
4. If the CE low transition occurs simultaneously with the WE low transition or after the WE transition, outputs
remain in a high impedance state.
5. tCW is measured from the later of CE going low to the end of Write.
6. OE level is high or low.
7. Transition is measured ±500mV from steady. This parameter is sampled and not 100% tested.
PRELIMINARY (November, 2001, Version 1.4) 9 AMIC Technology, Inc.
A62L256 Series
AC Test Conditions
Input Pulse Levels 0V, VCC
Input Rise And Fall Time 5 ns
Input and Output Timing Reference Levels VCC/2
Output Load See Figure 1
CL
30pF
* Including scope and jig.
Figure 1. Output Load
Data Retention Characteristics (TA = 0°C to 70°C or -40ºC to +85ºC)
Symbol Parameter Min. Typ. Max. Unit Conditions
VDR VCC for Data Retention 2.0 - 3.6 V
ICCDR Data Retention Current
LL-version
-
0.02 0.5
µA
LLU-version - 0.02 2
tCDR Chip Disable to Data Retention Time 0 - ns
CE ≥ VCC - 0.2V
VCC = 2V,
CE ≥ VCC - 0.2V
VIN ≥ 0V
See Retention Waveform
tR Operation Recovery Time tRC - ns
Typical values are measured at TA = 25°C.
Low VCC Data Retention Waveform
DATA RETENTION MODE
VCC
3.0V
tCDR
VCC ≥ 2.0V
3.0V
tR
CE
VIH
CE ≥ VCC - 0.2V
VIH
PRELIMINARY (November, 2001, Version 1.4) 10 AMIC Technology, Inc.
A62L256 Series
Ordering Information
Part No. Access Time (ns)
A62L256-55LL 3 2 28L DIP
A62L256M-55LL
A62L256V-55LL 3 2 28L TSOP (Forward)
A62L256R-55LL 3 2 28L TSOP (Reverse)
A62L256-70LL 3 2 28L DIP
A62L256M-70LL
A62L256V-70LL 3 2 28L TSOP (Forward)
A62L256R-70LL 3 2 28L TSOP (Reverse)
A62L256-55LLU 3 5 28L DIP
A62L256M-55LLU
A62L256V-55LLU 3 5 28L TSOP (Forward)
A62L256R-55LLU 3 5 28L TSOP (Reverse)
55
70
55
Operating Current (ICC2)
Max. (mA)
3 2 28L SOP
3 2 28L SOP
3 5 28L SOP
Standby Current (ISB1)
Max. (µA)
Package
A62L256-70LLU 3 5 28L DIP
A62L256M-70LLU
A62L256V-70LLU 3 5 28L TSOP (Forward)
A62L256R-70LLU 3 5 28L TSOP (Reverse)
70
3 5 28L SOP
PRELIMINARY (November, 2001, Version 1.4) 11 AMIC Technology, Inc.
A62L256 Series
Package Information
P-DIP 28L Outline Dimensions unit: inches/mm
D
28
E1
15
1
S
AL
A2
B
B1
14
A1
Base Plane
Seating Plane
e1
α
E
C
eA
Symbol
A - - 0.210 - - 5.33
A1 0.010 - - 0.25 - A2 0.150 0.155 0.160 3.81 3.94 4.06
B 0.016 0.018 0.022 0.41 0.46 0.56
B1 0.058 0.060 0.064 1.47 1.52 1.63
C 0.008 0.010 0.014 0.20 0.25 0.36
D - 1.460 1.470 - 37.08 37.34
E 0.590 0.600 0.610 14.99 15.24 15.49
E1 0.540 0.545 0.550 13.72 13.84 13.97
e1 0.090 0.100 0.110 2.29 2.54 2.79
L 0.120 0.130 0.140 3.05 3.30 3.56
α
eA 0.630 0.650 0.670 16.00 16.51 17.02
S - - 0.090 - - 2.29
Dimensions in inches Dimensions in mm
Min Nom Max Min Nom Max
0° - 15° 0° - 15°
Notes:
1. The maximum value of dimension D includes end flash.
2. Dimension E1 does not include resin fins.
3. Dimension S includes end flash.
PRELIMINARY (November, 2001, Version 1.4) 12 AMIC Technology, Inc.
A62L256 Series
Package Information
SOP (W.B.) 28L Outline Dimensions unit: inches/mm
1528
E
H
θ
L
See Detail F
Detail F
c
L1
y
1
S
Seating Plane
B
D
e
y
D
14
A
A1 A2
Symbol
A
A1 0.004
A2 0.093 0.098 0.103 2.36 2.49 2.62
B 0.014 0.016 0.020 0.36 0.41 0.51
C 0.008 0.010 0.012 0.20 0.25 0.30
D
E 0.326 0.331 0.336 8.28 8.41 8.53
e 0.044 0.050 0.056 1.12 1.27 1.42
H 0.453 0.465 0.477 11.51 11.81 12.12
L 0.028 0.036 0.044 0.71 0.91 1.12
L1 0.059 0.067 0.075 1.50 1.70 1.91
S
y
ο
Dimensions in inches Dimensions in mm
Min Nom Max Min Nom Max
- -
0.713 0.728
-
- -
- -
0°
0.112
- -
0.047
0.004
-
8° 0°
- -
0.10
-
- -
- -
18.11 18.49
2.85
- -
1.19
0.10
-
8°
Notes:
1. The maximum value of dimension D includes end flash.
2. Dimension E does not include resin fins.
3. Dimension S includes end flash.
PRELIMINARY (November, 2001, Version 1.4) 13 AMIC Technology, Inc.
A62L256 Series
Dimensions in inches
Dimensions in mm
Package Information
TSOP 28L TYPE I (8 X 13.4mm) Outline Dimensions unit: inches/mm
1
D
Detail "A"
1
E
14
D
y
D
28
15
e
Detail "A"
A2
c
A1
L
S
b
A
θ
Symbol
A - - 0.049 - - 1.25
A1 0.002 - - 0.05 - A2 0.037 0.039 0.041 0.95 1.00 1.05
b 0.007 0.009 0.011 0.17 0.22 0.27
c 0.005 - 0.008 0.12 - 0.21
E 0.311 0.315 0.319 7.90 8.00 8.10
L 0.012 0.020 0.028 0.30 0.50 0.70
D 0.520 0.528 0.536 13.20 13.40 13.60
D1 0.461 0.465 0.469 11.70 11.80 11.90
e 0.022 BSC 0.55 BSC
S 0.017 TYP 0.425 TYP
y - - 0.004 - - 0.10
θ 0°
Min Nom Max Min Nom Max
-
5° 0°
-
5°
PRELIMINARY (November, 2001, Version 1.4) 14 AMIC Technology, Inc.
Notes:
1. The maximum value of dimension D1 includes end flash.
2. Dimension E does not include resin fins.
3. Dimension S includes end flash.
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