Features
•
Operating Voltage: 3.3V
•
Access Time: 40 ns
•
Very Low Power Consumption
•
•
•
•
•
•
•
•
– Active: 180 mW (Max)
– Standby: 70 µW (Typ)
Wide Temperature Range: -55°C to +125°C
400 Mils Width Package
TTL Compatible Inputs and Outputs
Asynchronous
Designed on 0.35 Micron Process
Latch-up Immune
200 Krads capability
SEU LET Better Than 3 MeV
Description
The M65609E is a very low power CMOS static RAM organized as 131,072 x 8 bits.
Atmel brings the solution to applications where fast computing is as mandatory as low
consumption, such as aerospace electronics, portable instruments, or embarked
systems.
Utilizing an array of six transistors (6T) memory cells, the M65609E combines an
extremely low standby supply current (Typical value = 20 µA) with a fast access time
at 40 ns over the full military temperature range. The high stability of the 6T cell pro-
vides excellent protection against soft errors due to noise.
The M65609E is processed according to the methods of the latest revision of the MIL
STD 883 (class B or S), ESA SCC 9000 or QML.
It is produced on the same process as the MH1RT sea of gates series.
Rad. Hard
128K x 8
3.3-volt
Very Low Power
CMOS SRAM
M65609E
Rev. 4158D–AERO–06/02
1
Block Diagram
Pin Configuration
32 pins Flatpack 400 MILS
Pin Description
Table 1.
Pin Names
Name
A0 - A16
I/O1 - I/O8
CS
1
CS
2
WE
OE
Description
Address Inputs
Data Input/Output
Chip Select 1
Chip Select 2
Write Enable
Output Enable
Power
Ground
V
CC
GND
2
M65609E
4158D–AERO–06/02
M65609E
Table 2.
Truth Table
CS
1
H
CS
2
X
WE
X
OE
X
Inputs/
Outputs
Z
Mode
Deselect/
Power-down
Deselect/
Power-down
Read
Write
Output
Disable
X
L
L
L
Note:
L
H
H
H
X
H
L
H
X
L
X
H
Z
Data Out
Data In
Z
L = low, H = high, X = H or L, Z = high impedance.
3
4158D–AERO–06/02
Electrical Characteristics
Absolute Maximum Ratings
Supply Voltage to GND Potential ............................ -0.5V + 5V
DC Input Voltage.............................. GND - 0.3V to
V
CC
+ 0.3
DC Output Voltage High Z State ...... GND - 0.3V to
V
CC
+ 0.3
Storage Temperature .................................... -65°C to + 150°C
Output Current Into Outputs (Low) ............................... 20 mA
Electro Statics Discharge Voltage............................... > 2001V
(MIL STD 883D Method 3015.3)
*NOTE:
Stresses greater than those listed under Absolute Max-
imum Ratings may cause permanent damage to the
device. This is a stress rating only and functional oper-
ation 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.
Military Operating Range
Operating Voltage
3.3V + 0.3V
Operating Temperature
-55
°
C to + 125
°
C
Recommended DC Operating Conditions
Parameter
Description
Supply voltage
Ground
Input low voltage
Input high voltage
Min
3
0.0
GND - 0.3
2.2
Typ
3.3
0.0
0.0
–
Max
3.6
0.0
0.8
Unit
V
V
V
V
V
CC
Gnd
V
IL
V
IH
V
CC
+ 0.3
Capacitance
Parameter
C
IN (1)
C
OUT(1)
Note:
Description
Input low voltage
Output high voltage
Min
–
–
Typ
–
–
Max
8
8
Unit
pF
pF
1. Guaranteed but not tested.
4
M65609E
4158D–AERO–06/02
M65609E
DC Parameters
DC Test Conditions
Parameter
IIX
(1)
Description
Input leakage
current
Output leakage
current
Output low voltage
Output high voltage
Minimum
-1
Typical
–
Maximum
1
Unit
µA
IOZ
(1)
VOL
VOH
1.
2.
3.
(2)
(3)
-1
-
2.4
–
–
–
1
0.4
–
µA
V
V
Gnd < Vin <
V
CC
, Gnd < Vout <
V
CC
Output Disabled.
V
CC
min. IOL = 1 mA.
V
CC
min. IOH = -0.5 mA.
Consumption
Symbol
ICCSB
(1)
ICCSB
1 (2)
ICCOP
(3)
1.
2.
3.
Description
Standby supply current
Standby supply current
Dynamic operating
current
65609E-40
2.5
1.5
50
Unit
mA
mA
mA
Value
max
max
max
CS
1
> VIH or CS
2
< VIL and CS
1
< VIL.
CS
1
>
V
CC
- 0.3V or, CS
2
< Gnd + 0.3V and CS
1
< 0.2V
F = 1/T
AVAV
, I
OUT
= 0 mA, W = OE = VIH, Vin = Gnd or
V
CC
,
V
CC
max.
5
4158D–AERO–06/02
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