The MCM72F10 (2MB) is configured as 1M x 72 bits. It is packaged in a
168–pin dual–in–line memory module DIMM. The module uses Motorola’s 3.3 V ,
256K x 18 bit flow–through BurstRAMs.
Address (A), data inputs (DQ, DP), and all control signals except output enable
) are clock (K) controlled through positive–edge–triggered noninverting
(G
registers.
Write cycles are internally self–timed and initiated by the rising edge of the
clock (K) input. This feature provides increased timing flexibility for incoming
signals. Synchronous byte write (W
both bytes.
• Single 3.3 V + 10%, – 5% Power Supply
• Plug and Pin Compatibility with 1MB, 2MB, and 4MB
• Multiple Clock Pins for Reduced Loading
• All Inputs and Outputs are L VTTL Compatible
• Byte Write Capability
• Fast SRAM Access Times: 8/9/12 ns
• High Quality Multi–Layer FR4 PWB With Separate Power and Ground
Planes
• Amp Connector, Part Number: 390064–4
• 168–Pin DIMM Module
) allows writes to either individual bytes or to
168–LEAD DIMM
CASE TBD
TOP VIEW
1
11
40
41
REV 1
11/26/97
Motorola, Inc. 1997
MOTOROLA FASTSRAM
84
MCM72F10
1
Page 2
BLOCK DIAGRAM
256K x 18
SE1
G
A0 – A17
ADSC
SBa
SBb
K
DQa0 – DQa7
DQa8
DQb0 – DQb7
DQb8
SE2
ADV
58, 142NCNo Connection: There is no connection to the chip.
A0 – A18InputSynchronous Address Inputs: These inputs are registered and must meet
DP0 – DP7Synchronous Parity Data Inputs/Outputs.
DQ0 – DQ63I/OSynchronous Data Inputs/Outputs.
W0 – W7InputSynchronous Byte Write Inputs: x refers to the byte being written (byte a,
V
DD
V
SS
SupplyPower Supply: 3.3 V + 10%, – 5%. Must be connected on all modules.
SupplyGround.
setup and hold times.
deselect cycle.
blocks ADSP
Low — enables output buffer.
High — DQx pins are high impedance.
except G
b).
or deselects chip when ADSC is asserted.
and LBO.
DATA RAM MCM69F618A SYNCHRONOUS TRUTH TABLE (See Notes 1, 2, 3, and 4)
Next CycleAddress UsedEADSPGDQxWRITE
DeselectNone10XHigh–ZX
Begin ReadExternal Address000DQRead
ReadCurrentX11High–ZRead
ReadCurrentX10DQRead
Begin WriteExternal00XHigh–ZWrite
WriteCurrentX1XHigh–ZWrite
NOTES:
1. X = don’t care, 1 = logic high, 0 = logic low.
2. Write is defined as any Wx
3. G
is an asynchronous signal and is not sampled by the clock K. G drives the bus immediately (t
4. On write cycles that follow read cycles, G
also remain negated at the completion of the write cycle to ensure proper write data hold times.
low.
must be negated prior to the start of the write cycle to ensure proper write data setup times. G must
MCM72F10
4
) following G going low.
GLQX
MOTOROLA FAST SRAM
Page 5
ABSOLUTE MAXIMUM RATINGS (See Note 1)
RatingSymbolValueUnit
Power Supply VoltageV
Voltage Relative to VSS
(See Note 2)
Input Voltage Three State I/O
(See Note 2)
Output Current (per I/O)I
Power DissipationP
Temperature Under BiasT
Storage TemperatureT
NOTES:
1. 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.
2. This is a steady–state DC parameter that is in effect after the power supply has
achieved its nominal operating level. Power sequencing can not be controlled and
is not allowed.
3. Power dissipation capability is dependent upon package characteristics and use
environment. See Package Thermal Characteristics.
DD
Vin, V
V
out
bias
stg
out
IT
D
– 0.5 to + 4.6V
– 0.5 to VDD + 0.5V
VSS – 0.5 to VDD + 0.5V
± 20mA
4.6W
– 10 to + 85°C
– 55 to + 125°C
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 this high–impedance circuit.
PACKAGE THERMAL CHARACTERISTICS — PBGA
RatingSymbolMaxUnitNotes
Junction to Ambient (@ 200 lfm)Single Layer Board
Four Layer Board
Junction to Board (Bottom)R
Junction to Case (Top)R
NOTES:
1. Junction temperature is a function of on–chip power dissipation, package thermal resistance, mounting site (board) temperature, ambient
temperature, air flow, board population, and board thermal resistance.
2. Per SEMI G38–87.
3. Indicates the average thermal resistance between the die and the printed circuit board.
4. Indicates the average thermal resistance between the die and the case top surface via the cold plate method (MIL SPEC–883 Method
1012.1).
R
θJA
θJB
θJC
41
19
11°C/W3
19°C/W4
°C/W1, 2
MOTOROLA FAST SRAM
MCM72F10
5
Page 6
DC OPERA TING CONDITIONS AND CHARACTERISTICS
(3.6 V ≥ VDD ≥ 3.1 V, TJ = 20 to + 1 10 °C, Unless Otherwise Noted)
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply Voltage (Operating Voltage Range)V
Input High VoltageV
Input Low VoltageV
*VIL ≥ – 2.0 V for t ≤ t
KHKH
/2.
VSS – 1.0 V
(Voltages Referenced to VSS = 0 V)
V
IH
V
SS
SymbolMinTypMaxUnit
DD
IH
IL
20% t
KHKH
(MIN)
Figure 1. Undershoot Voltage
DC CHARACTERISTICS
ParameterSymbolMinMaxUnit
Input Leakage Current (0 V ≤ Vin ≤ VDD)I
Output Leakage Current (0 V ≤ Vin ≤ VDD)I
Output Low Voltage (IOL = + 8.0 mA)V
Output High Voltage (IOH = – 4.0 mA)V
3.1353.33.6V
1.7—VDD + 0.3V
– 0.3*—0.7V
lkg(I)
lkg(O)
OL
OH
—± 1.0µA
—± 1.0µA
—0.4V
2.4—V
POWER SUPPLY CURRENTS
ParameterSymbolMinMaxUnit
AC Supply Current (Device Selected, All Outputs Open,MCM72F10DG8
Cycle Time ≥ t
CMOS Standby Supply Current (Deselected, Clock (K) Cycle Time ≥ t
Clock Running Supply Current (Deselected, Clock (K) Cycle Time ≥ t
All Other Inputs Held to Static CMOS Levels Vin ≤ VSS + 0.2 V or ≥ VDD – 0.2 V)
CAPACITANCE (f = 1.0 MHz, dV = 3.0 V, T
Input CapacitanceAddress, ADSP
I/O CapacitanceC
min)MCM72F10DG9
KHKH
= 20 to 110 °C, Periodically Sampled Rather Than 100% Tested)
J
ParameterSymbolTypMaxUnit
MCM72F10DG12
KHKH
KHKH
,
E, G
Other Inputs
I
DDA
I
SB1
I
SB2
C
in
I/O
—3580
—3040mA
—1360mA
74
42
26
3842pF
3480
3380
90
50
30
MASS (Periodically Sampled Rather Than 100% Tested)
ParameterMaxUnit
Mass36g
mA
pF
MCM72F10
6
MOTOROLA FAST SRAM
Page 7
AC OPERA TING CONDITIONS AND CHARACTERISTICS
(3.6 V ≥ VDD ≥ 3.1 V, TJ = 20 to + 1 10 °C, Unless Otherwise Noted)
DATA RAMs READ/WRITE CYCLE TIMING (See Notes 1, 2, and 3)
MCM72F10–8MCM72F10–9MCM72F10–12
ParameterSymbol
Cycle Timet
Clock Access Timet
Output Enable to Output Validt
Clock High to Output Activet
Clock High to Output Changet
Output Enable to Output Activet
Output Disable to Q High–Zt
Clock High to Q High–Zt
Clock High Pulse Widtht
Clock Low Pulse Widtht
Setup Times:Address
Hold Times:Address
ADSP
NOTES:
1. In setup and hold times, write refers to either any SBx
2. Chip enable is defined as SE1
3. All read and write cycle timings are referenced from K or G
4. Tested per AC Test Load (Figure 2).
5. Measured at ± 200 mV from steady state. Tested per High–Z Test Load (Figure 2).
6. This parameter is sampled and not 100% tested.
7. At any given voltage and temperature, t
ADSP
Data In
Write
Chip Enable
, ADSC, ADV
Data In
Write
Chip Enable
low, SE2 high, and SE3 low whenever ADSP or ADSC is asserted.
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty , representation or guarantee regarding
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
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.
How to reach us:
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MOTOROLA FASTSRAM
◊
MCM72F10/D
MCM72F10
11
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