MOTOROLA MCM6946YJ10R 512k x 9 bit fast static random access memory Datasheet

MOTOROLA
Order this document
by MCM6946/D
SEMICONDUCTOR TECHNICAL DATA
Advance Information
MCM6946
512K x 8 Bit Static Random
Access Memory
YJ PACKAGE
400 MIL SOJ
CASE 893–02
The MCM6946 is a 4,194,304–bit static random access memory organized as
524,288 words of 8 bits. Static design eliminates the need for external clocks or
timing strobes.
The MCM6946 is equipped with chip enable (E) and output enable (G) pins,
allowing for greater system flexibility and eliminating bus contention problems.
Either input, when high, will force the outputs into high–impedance.
The MCM6946 is available in a 400 mil, 36–lead surface–mount SOJ package.
•
•
•
•
•
•
•
Single 3.3 V – 5%, + 10% Power Supply
Fast Access Time: 8/10/12/15 ns
Equal Address and Chip Enable Access Time
All Inputs and Outputs are TTL Compatible
Three–State Outputs
Power Operation: 195/185 / 180 / 175 mA Maximum, Active AC
Available in TSOP or SOJ Packages
TS PACKAGE
44–LEAD
TSOP TYPE II
CASE 924A–02
PIN NAMES
A0 – A18 . . . . . . . . . . . . . . . Address Inputs
W . . . . . . . . . . . . . . . . . . . . . . . Write Enable
G . . . . . . . . . . . . . . . . . . . . . Output Enable
E . . . . . . . . . . . . . . . . . . . . . . . . Chip Enable
DQ . . . . . . . . . . . . . . . . . Data Input/Output
NC . . . . . . . . . . . . . . . . . . . . No Connection
VCC . . . . . . . . . . . . . + 3.3 V Power Supply
VSS . . . . . . . . . . . . . . . . . . . . . . . . . Ground
This document contains information on a new product. Specifications and information herein are subject to change without notice.
REV 5
3/31/98

Motorola, Inc. 1998
MOTOROLA
FAST SRAM
MCM6946
1
BLOCK DIAGRAM
A
A
A
A
A
A
ROW
DECODER
MEMORY MATRIX
A
A
A
A
DQ
COLUMN I/O
INPUT
DATA
CONTROL
COLUMN DECODER
DQ
A
A
A
A
A
A
A
A
A
DQ
E
W
G
MCM6946
2
DQ
MOTOROLA FAST SRAM
PIN ASSIGNMENTS
400 MIL SOJ
A
A
1
2
36
35
TSOP TYPE II
NC
A
A
3
34
A
A
4
33
A
A
5
32
A
E
6
31
G
DQ
7
30
DQ
DQ
8
29
DQ
VCC
9
28
VSS
VSS
10
27
DQ
11
26
DQ
12
25
NC
1
44
NC
NC
2
43
NC
A
3
42
NC
A
4
41
A
A
A
5
6
40
39
A
A
A
E
7
8
38
37
A
G
DQ
9
36
DQ
DQ
10
35
DQ
VCC
VDD
VSS
11
12
34
33
VSS
VDD
DQ
DQ
13
32
DQ
DQ
14
31
DQ
W
15
30
A
A
16
29
A
DQ
W
13
24
A
A
14
23
A
A
17
28
A
A
15
22
A
A
18
27
A
A
19
26
A
A
20
25
NC
NC
NC
21
22
24
23
NC
NC
A
16
21
A
A
17
20
A
A
MOTOROLA FAST SRAM
18
19
NC
MCM6946
3
TRUTH TABLE (X = Don’t Care)
E
G
W
Mode
I/O Pin
Cycle
Current
H
X
X
Not Selected
High–Z
—
ISB1, ISB2
L
H
H
Output Disabled
High–Z
—
ICCA
L
L
H
Read
Dout
Read
ICCA
L
X
L
Write
High–Z
Write
ICCA
ABSOLUTE MAXIMUM RATINGS (See Note)
Symbol
Value
Unit
VCC
– 0.5 to + 5.0
V
Vin, Vout
– 0.5 to VCC + 0.5
V
Output Current (per I/O)
Iout
± 20
mA
Power Dissipation
PD
1.0
W
Temperature Under Bias
Tbias
– 10 to + 85
°C
Operating Temperature
TA
0 to + 70
°C
Tstg
– 55 to + 150
°C
Rating
Power Supply Voltage Relative to VSS
Voltage Relative to VSS for Any Pin
Except VCC
Storage Temperature — Plastic
This device contains circuitry to protect the
inputs against damage due to high static voltages or electric fields; however, it is advised
that normal precautions be taken to avoid
application of any voltage higher than maximum rated voltages to these high–impedance
circuits.
This BiCMOS memory circuit has been
designed to meet the dc and ac specifications
shown in the tables, after thermal equilibrium
has been established. The circuit is in a test
socket or mounted on a printed circuit board and
transverse air flow of at least 500 linear feet per
minute is maintained.
NOTE: Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are
exceeded. Functional operation should be restricted to RECOMMENDED OPERATING CONDITIONS. Exposure to higher than recommended voltages for
extended periods of time could affect device reliability.
MCM6946
4
MOTOROLA FAST SRAM
DC OPERATING CONDITIONS AND CHARACTERISTICS
(VCC = 3.3 V – 5%, + 10%, TA = 0 to + 70°C, Unless Otherwise Noted)
RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
Min
Typ
Max
Unit
Supply Voltage (Operating Voltage Range)
VCC
3.135
3.3
3.6
V
Input High Voltage
VIH
2.2
—
VCC + 0.3**
V
Input Low Voltage
VIL
– 0.5*
—
0.8
V
Symbol
Min
Max
Unit
Input Leakage Current (All Inputs, Vin = 0 to VCC)
Ilkg(I)
—
± 1.0
µA
Output Leakage Current (E = VIH, Vout = 0 to VCC)
Ilkg(O)
—
± 1.0
µA
Output Low Voltage (IOL = + 8.0 mA)
VOL
—
0.4
V
Output High Voltage (IOH = – 4.0 mA)
VOH
2.4
—
V
Symbol
0 to 70°C
Unit
* VIL (min) = – 0.5 V dc; VIL (min) = – 2.0 V ac (pulse width ≤ 2.0 ns).
** VIH (max) = VCC + 0.3 V dc; VIH (max) = VCC + 2.0 V ac (pulse width ≤ 2.0 ns).
DC CHARACTERISTICS
Parameter
POWER SUPPLY CURRENTS
Parameter
AC Active Supply Current
(Iout = 0 mA, VCC = Max)
MCM6946–8: tAVAV = 8 ns
MCM6946–10: tAVAV = 10 ns
MCM6946–12: tAVAV = 12 ns
MCM6946–15: tAVAV = 15 ns
ICC
195
185
180
175
mA
AC Standby Current (VCC = Max, E = VIH,
No Other Restrictions on Other Inputs)
MCM6946–8: tAVAV = 8 ns
MCM6946–10: tAVAV = 10 ns
MCM6946–12: tAVAV = 12 ns
MCM6946–15: tAVAV = 15 ns
ISB1
55
50
50
45
mA
ISB2
20
mA
Symbol
Typ
Max
Unit
All Inputs Except Clocks and DQs
E, G, W
Cin
Cck
4
5
6
8
pF
DQ
CI/O
5
8
pF
CMOS Standby Current (E ≥ VCC – 0.2 V, Vin ≤ VSS + 0.2 V or ≥ VCC – 0.2 V)
(VCC = Max, f = 0 MHz)
CAPACITANCE (f = 1.0 MHz, dV = 3.3 V, TA = 25°C, Periodically Sampled Rather Than 100% Tested)
Parameter
Input Capacitance
Input/Output Capacitance
MOTOROLA FAST SRAM
MCM6946
5
AC OPERATING CONDITIONS AND CHARACTERISTICS
(VCC = 3.3 V – 5%, + 10%, TA = 0 to + 70°C, Unless Otherwise Noted)
Input Pulse Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 3.0 V
Input Rise/Fall Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 ns
Input Timing Measurement Reference Level . . . . . . . . . . . . . . . 1.5 V
Output Timing Measurement Reference Level . . . . . . . . . . . . . 1.5 V
Output Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Figure 1
READ CYCLE TIMING (See Notes 1 and 2)
MCM6946–8
P
Parameter
MCM6946–10
MCM6946–12
MCM6946–15
S b l
Symbol
Min
Max
Min
Max
Min
Max
Min
Max
U i
Unit
N
Notes
Read Cycle Time
tAVAV
8
—
10
—
12
—
15
—
ns
3
Address Access Time
tAVQV
—
8
—
10
—
12
—
15
ns
Enable Access Time
tELQV
—
8
—
10
—
12
—
15
ns
Output Enable Access Time
tGLQV
—
4
—
5
—
6
—
7
ns
Output Hold from Address Change
tAXQX
2
—
2
—
2
—
2
—
ns
Enable Low to Output Active
tELQX
3
—
3
—
3
—
3
—
ns
5, 6, 7
Output Enable Low to Output Active
tGLQX
0
—
0
—
0
—
0
—
ns
5, 6, 7
Enable High to Output High–Z
tEHQZ
0
4
0
5
0
6
0
7
ns
5, 6, 7
Output Enable High to Output High–Z
tGHQZ
0
4
0
5
0
6
0
7
ns
5, 6, 7
4
NOTES:
1. W is high for read cycle.
2. Product sensitivities to noise require proper grounding and decoupling of power supplies as well as minimization or elimination of bus
contention conditions during read and write cycles.
3. All read cycle timings are referenced from the last valid address to the first transitioning address.
4. Addresses valid prior to or coincident with E going low.
5. At any given voltage and temperature, tEHQZ max tELQX min, and tGHQZ max tGLQX min, both for a given device and from device
to device.
6. Transition is measured ± 200 mV from steady–state voltage.
7. This parameter is sampled and not 100% tested.
8. Device is continuously selected (E ≤ VIL, G ≤ VIL).
t
t
TIMING LIMITS
RL = 50 Ω
OUTPUT
Z0 = 50 Ω
VL = 1.5 V
The table of timing values shows either a minimum
or a maximum limit for each parameter. Input requirements are specified from the external system point of
view. Thus, address setup time is shown as a minimum since the system must supply at least that much
time. On the other hand, responses from the memory
are specified from the device point of view. Thus, the
access time is shown as a maximum since the device
never provides data later than that time.
Figure 1. AC Test Load
MCM6946
6
MOTOROLA FAST SRAM
READ CYCLE 1 (See Note 8)
tAVAV
A (ADDRESS)
tAXQX
Q (DATA OUT)
PREVIOUS DATA VALID
DATA VALID
tAVQV
READ CYCLE 2 (See Note 4)
tAVAV
A (ADDRESS)
tELQV
E (CHIP ENABLE)
tEHQZ
tELQX
G (OUTPUT ENABLE)
tGLQV
tGHQZ
tGLQX
Q (DATA OUT)
HIGH–Z
DATA VALID
tAVQV
SUPPLY CURRENT
ICC
ISB
MOTOROLA FAST SRAM
MCM6946
7
WRITE CYCLE 1 (W Controlled; See Notes 1, 2, and 3)
MCM6946–8
P
Parameter
MCM6946–10
MCM6946–12
MCM6946–15
S b l
Symbol
Min
Max
Min
Max
Min
Max
Min
Max
U i
Unit
N
Notes
Write Cycle Time
tAVAV
8
—
10
—
12
—
15
—
ns
4
Address Setup Time
tAVWL
0
—
0
—
0
—
0
—
ns
Address Valid to End of Write
tAVWH
8
—
9
—
10
—
12
—
ns
Address Valid to End of Write (G High)
tAVWH
7
—
8
—
9
—
10
—
ns
Write Pulse Width
tWLWH
tWLEH
8
—
9
—
10
—
12
—
ns
Write Pulse Width (G High)
tWLWH
tWLEH
7
—
8
—
9
—
10
—
ns
Data Valid to End of Write
tDVWH
5
—
5
—
6
—
7
—
ns
Data Hold Time
tWHDX
0
—
0
—
0
—
0
—
ns
Write Low to Data High–Z
tWLQZ
0
4
0
5
0
6
0
7
ns
5, 6, 7
Write High to Output Active
tWHQX
3
—
3
—
3
—
3
—
ns
5, 6, 7
Write Recovery Time
tWHAX
0
—
0
—
0
—
0
—
ns
NOTES:
1. A write occurs during the overlap of E low and W low.
2. Product sensitivities to noise require proper grounding and decoupling of power supplies as well as minimization or elimination of bus
contention conditions during read and write cycles.
3. If G goes low coincident with or after W goes low, the output will remain in a high–impedance state.
4. All write cycle timings are referenced from the last valid address to the first transitioning address.
5. Transition is measured ± 200 mV from steady–state voltage.
6. This parameter is sampled and not 100% tested.
7. At any given voltage and temperature, tWLQZ max < tWHQX min, both for a given device and from device to device.
WRITE CYCLE 1 (W Controlled; See Notes 1, 2, and 3)
tAVAV
A (ADDRESS)
tAVWH
tWHAX
E (CHIP ENABLE)
tWLWH
tWLEH
W (WRITE ENABLE)
tAVWL
tDVWH
DATA VALID
D (DATA IN)
tWLQZ
Q (DATA OUT)
MCM6946
8
tWHDX
HIGH–Z
tWHQX
HIGH–Z
MOTOROLA FAST SRAM
WRITE CYCLE 2 (E Controlled; See Notes 1, 2, and 3)
MCM6946–8
P
Parameter
MCM6946–10
MCM6946–12
MCM6946–15
S b l
Symbol
Min
Max
Min
Max
Min
Max
Min
Max
U i
Unit
N
Notes
Write Cycle Time
tAVAV
8
—
10
—
12
—
15
—
ns
4
Address Setup Time
tAVEL
0
—
0
—
0
—
0
—
ns
Address Valid to End of Write
tAVEH
7
—
9
—
10
—
12
—
ns
Address Valid to End of Write (G High)
tAVEH
7
—
8
—
9
—
10
—
ns
Enable Pulse Width
tELEH,
tELWH
8
—
9
—
10
—
12
—
ns
5, 6
Enable Pulse Width (G High)
tELEH,
tELWH
7
—
8
—
9
—
10
—
ns
5, 6
Data Valid to End of Write
tDVEH
5
—
5
—
6
—
7
—
ns
Data Hold Time
tEHDX
0
—
0
—
0
—
0
—
ns
Write Recovery Time
tEHAX
0
—
0
—
0
—
0
—
ns
NOTES:
1. A write occurs during the overlap of E low and W low.
2. Product sensitivities to noise require proper grounding and decoupling of power supplies as well as minimization or elimination of bus
contention conditions during read and write cycles.
3. If G goes low coincident with or after W goes low, the output will remain in a high–impedance state.
4. All write cycle timing is referenced from the last valid address to the first transitioning address.
5. If E goes low coincident with or after W goes low, the output will remain in a high–impedance condition.
6. If E goes high coincident with or before W goes high, the output will remain in a high–impedance condition.
WRITE CYCLE 2 (E Controlled; See Notes 1, 2, and 3)
tAVAV
A (ADDRESS)
tAVEH
tELEH
E (CHIP ENABLE)
tAVEL
tELWH
tEHAX
W (WRITE ENABLE)
tDVEH
DATA VALID
D (DATA IN)
tEHDX
HIGH–Z
Q (DATA OUT)
ORDERING INFORMATION
(Order by Full Part Number)
MCM 6946 XX XX XX
Motorola Memory Prefix
Shipping Method (R = Tape and Reel, Blank = Rails)
Part Number
Speed (8 = 8 ns, 10 = 10 ns, 12 = 12 ns,
15 = 15 ns)
Package (YJ = 400 mil SOJ, TS = 44–Lead
TSOP Type II)
Full Part Numbers — MCM6946YJ8
MCM6946YJ8R
MCM6946TS8
MCM6946TS8R
MOTOROLA FAST SRAM
MCM6946YJ10
MCM6946YJ10R
MCM6946TS10
MCM6946TS10R
MCM6946YJ12
MCM6946YJ12R
MCM6946TS12
MCM6946TS12R
MCM6946YJ15
MCM6946YJ15R
MCM6946TS15
MCM6946TS15R
MCM6946
9
PACKAGE DIMENSIONS
YJ PACKAGE
400 MIL SOJ
CASE 893–02
0.015 (0.381) T Y
2 ZONES 18 PLACES
NOTE 3
0.007 (0.17)
M
36
T Y
S
X
S
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. TO BE DETERMINED AT PLANE –T–.
4. DIMENSION A AND B DO NOT INCLUDE MOLD
PROTRUSION. MOLD PROTRUSION SHALL NOT
EXCEED 0.006 (0.15) PER SIDE.
5. DIMENSION A AND B INCLUDE MOLD MISMATCH
AND ARE DETERMINED AT THE PARTING LINE.
C
E
19
–Y–
P
B
R
DIM
A
B
C
D
E
F
G
K
L
N
P
R
R1
R/2
1
18
36X R
R1
36X
A
–X–
36X
K
VIEW A
34X
L
G
N
MILLIMETERS
MIN
MAX
23.37
23.62
10.03
10.29
3.25
3.76
0.38
0.51
2.08
–––
0.66
0.81
1.27 BSC
0.90
1.40
0.64 BSC
0.90
1.14
11.05
11.30
9.40 BSC
0.76
1.02
0.004 (0.1) T
–T–
2X
F
INCHES
MIN
MAX
0.920
0.930
0.395
0.405
0.128
0.148
0.015
0.020
0.082
–––
0.026
0.032
0.050 BSC
0.035
0.55
0.025 BSC
0.035
0.045
0.435
0.445
0.370 BSC
0.030
0.040
SEATING
PLANE
36X D
0.007 (0.17)
M
T Y
S
X
S
NOTE 3
VIEW A
MCM6946
10
MOTOROLA FAST SRAM
TS PACKAGE
44–LEAD
TSOP TYPE II
CASE 924A–02
VIEW A
B
44
23
E1
A A
1
22
A2
A
D
A
22X
0.2
M
E
C B
44X
0.004 (0.1) C
SEATING
PLANE
4X
e /2
42X
ÉÉÉÉ
ÉÉÉÉ
c
A1
b
0.2
M
C
e
C B
L
SECTION A–A
q
VIEW A
ROTATED 90 _ CLOCKWISE
40 PLACES
NOTES:
1. DIMENSIONINS AND TOLERANCING PER ASME
Y14.5M, 1994.
2. DIMENSIONS IN MILLIMETER.
3. DIMENSION D1 AND E1 DO NOT INCLUDE MOLD
PROTRUSION. ALLOWABLE MOLD PROTRUSION
IS 0.15 PER SIDE.
4. DIMENSION b DOES NOT INCLUDE DAMBAR
PROTRUSIONS. DAMBAR PROTRUSION SHALL
NOT CAUSE THE LEAD WIDTH TO EXCEED 0.58.
DIM
A
A1
A2
b
c
D
e
E
E1
L
q
MILLIMETERS
MIN
MAX
–––
1.20
0.05
0.15
0.95
1.05
0.30
0.45
0.12
0.21
18.28
18.54
0.80 BSC
11.56
11.96
10.03
10.29
0.40
0.60
0_
5_
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the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
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◊
MCM6946/D
MCM6946
11
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