The MCM69L736A/818A is a 4M synchronous late write fast static RAM
designed to provide high performance in secondary cache and ATM switch,
Telecom, and other high speed memory applications. The MCM69L818A
(organized as 256K words by 18 bits) and the MCM69L736A (organized as 128K
words by 36 bits) are fabricated in Motorola’s high performance silicon gate
BiCMOS technology .
The differential clock (CK) inputs control the timing of read/write operations of
the RAM. At the rising edge of CK, all addresses, write enables, and synchronous
selects are registered. An internal buffer and special logic enable the memory to
accept write data on the rising edge of CK a cycle after address and control
signals. Read data is available at the falling edge of CK.
The RAM uses HSTL inputs and outputs. The adjustable input trip–point (V
and output voltage (V
optimizing system performance.
The synchronous write and byte enables allow writing to individual bytes or the
entire word.
The impedance of the output buffers is programmable, allowing the outputs to
match the impedance of the circuit traces which reduces signal reflections.
• 1 19 Bump, 50 mil (1.27 mm) Pitch, 14 mm x 22 mm Plastic Ball Grid Array
(PBGA) Package
) gives the system designer greater flexibility in
DDQ
ref
Order this document
by MCM69L736A/D
MCM69L736A
MCM69L818A
ZP PACKAGE
PBGA
CASE 999–01
)
This document contains information on a new product. Specifications and information herein are subject to change without notice.
4/3/97
Motorola, Inc. 1997
MOTOROLA FASTSRAM
MCM69L736A•MCM69L818A
1
FUNCTIONAL BLOCK DIAGRAM
SA
SW
SBx
CK
SS
ADDRESS
REGISTERS
SW
REGISTERS
G
SS
REGISTERS
MEMORY
ARRAY
CONTROL
LOGIC
DATA IN
REGISTER
DQ
DATA OUT
LATCH
PIN ASSIGNMENTS
TOP VIEW
MCM69L736A
6543217
MCM69L818A
6543217
A
V
SASASASA
DDQ
B
NCNCSANC
C
D
E
F
G
H
J
K
L
M
N
P
R
T
U
SASASASA
NC
DQcDQcVSSZQDQb
DQc
DQc
V
DQcV
DDQ
DQcDQc
DQc
DQcVSSNCDQb
V
V
V
V
DD
DDQ
DQdDQdV
DQdV
DDQ
DQdDQd
DQdDQdV
SASA
NC
NC
NCSASANC
DDQ
NC
SA
V
DD
V
SS
V
G
V
DD
CKV
CK
SW
SA
V
DD
SA
TCK
SS
V
SS
SBb
V
SS
V
ref
SS
V
SS
V
SS
V
SS
V
SS
TDO
SS
SS
V
ref
SS
SBdDQdDQd
SS
SS
SS
V
DD
TDITMS
NC
DQbSSV
DQb
DQbNCSBc
V
DD
DQa
DQaSBa
DQa
DQaSAV
DQa
NC
V
V
V
V
V
DDQ
NC
NC
DQb
DQb
DDQ
DQb
DQb
DDQ
DQa
DQa
DDQ
DQa
DQa
NC
ZZ
DDQ
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
U
SASASASA
V
DDQ
NCNCSANC
SASASASA
NC
DQbNCVSSZQDQa
DQbNC
V
NCV
DDQ
DQbNC
DQb
NCVSSNCDQa
V
V
V
V
DD
DDQ
NCDQbVSSCKV
NCDQb
DQbV
DDQ
NCDQb
NCDQbVSSSA
SASA
NC
SASASASA
NC
DDQ
NC
NC
SA
V
DD
V
SS
V
NCSSV
G
V
DD
CK
SW
V
DD
NC
TCK
SS
V
SS
V
SS
V
SS
V
ref
SS
V
SS
V
SS
V
SS
V
SS
TDO
DQa
NCNCSBb
V
NC
DQaSBa
NC
DQaSAV
NC
NC
SS
SS
V
ref
V
SS
SS
SS
V
DD
TDITMS
DD
V
V
V
V
V
DDQ
NC
NC
NC
DQa
DDQ
DQa
NC
DDQ
DQa
NC
DDQ
NC
DQa
NC
ZZ
DDQ
MCM69L736A•MCM69L818A
2
MOTOROLA FAST SRAM
MCM69L736A PIN DESCRIPTIONS
PBGA Pin LocationsSymbolTypeDescription
2A, 3A, 5A, 6A, 3B, 5B, 2C, 3C,
5C, 6C, 4N, 4P, 2R, 6R, 3T, 4T, 5T
4KCKInputAddress, data in, and control input register clock. Active high.
4LCKInputAddress, data in, and control input register clock. Active low.
4MSWInputSynchronous Write: Registered on the rising clock edge, active low.
5L, 5G, 3G, 3L
(a), (b), (c), (d)
4ESSInputSynchronous Chip Enable: Registered on the rising clock edge, active
4FGInputOutput Enable: Asynchronous pin, active low.
2UTMSInputT est Mode Select (JTAG).
3UTDIInputTest Data In (JT AG).
4UTCKInputTest Clock (JTAG).
5UTDOOutputTest Data Out (JTAG).
4DZQInputProgrammable Output Impedance: Programming pin.
7TZZInputReserved for future use. Must be grounded.
SAInputSynchronous Address Inputs: Registered on the rising clock edge.
Writes all enabled bytes.
SBxInputSynchronous Byte Write Enable: Enables writes to byte x in
DQxI/OSynchronous Data I/O.
ref
DD
DDQ
V
SS
NC—No Connection: There is no connection to the chip.
SupplyInput Reference: Provides reference voltage for input buffers.
SupplyCore Power Supply.
SupplyOutput Power Supply: Provides operating power for output buffers.
SupplyGround.
conjunction with the SW
low.
low.
input. Has no effect on read cycles, active
MOTOROLA FAST SRAM
MCM69L736A•MCM69L818A
3
MCM69L818A PIN DESCRIPTIONS
PBGA Pin LocationsSymbol
2A, 3A, 5A, 6A, 3B, 5B, 2C, 3C, 5C,
6C, 4N, 4P, 2R, 6R, 2T, 3T, 5T, 6T
4KCKInputAddress, data in, and control input register clock. Active high.
4LCKInputAddress, data in, and control input register clock. Active low.
4MSWInputSynchronous Write: Registered on the rising clock edge, active low.
5L, 3G
(a), (b)
4ESSInputSynchronous Chip Enable: Registered on the rising clock edge, active
2UTMSInputT est Mode Select (JTAG).
3UTDIInputTest Data In (JT AG).
4UTCKInputTest Clock (JTAG).
5UTDOOutputTest Data Out (JTAG).
4DZQInputProgrammable Output Impedance: Programming pin.
4FGInputOutput Enable: Asynchronous pin, active low.
7TZZInputReserved for future use. Must be grounded.
SAInputSynchronous Address Inputs: Registered on the rising clock edge.
Writes all enabled bytes.
SBxInputSynchronous Byte Write Enable: Enables writes to byte x in
DQxI/OSynchronous Data I/O.
ref
DD
DDQ
V
SS
NC—No Connection: There is no connection to the chip.
SupplyInput Reference: Provides reference voltage for input buffers.
SupplyCore Power Supply.
SupplyOutput Power Supply: Provides operating power for output buffers.
SupplyGround.
conjunction with the SW
low.
low.
input. Has no effect on read cycles, active
MCM69L736A•MCM69L818A
4
MOTOROLA FAST SRAM
ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to V
Rating
Core Supply VoltageV
Output Supply VoltageV
Voltage On Any PinV
Input Current (per I/O)I
Output Current (per I/O)I
Power Dissipation (See Note 2)P
Operating TemperatureT
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. Power dissipation capability will be dependent upon package characteristics and use
environment. See enclosed thermal impedance data.
SymbolValueUnit
DD
DDQ
bias
– 0.5 to VDD + 0.5V
– 0.5 to VDD + 0.5V
in
in
out
D
A
stg
, See Note 1)
SS
– 0.5 to + 4.6V
± 50mA
± 70mA
—W
0 to + 70°C
–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.
This BiCMOS memory circuit has been
designed to meet the dc and ac specifications
shown in the tables, after thermal equilibrium
has been established.
This device contains circuitry that will ensure
the output devices are in High–Z at power up.
PBGA PACKAGE THERMAL CHARACTERISTICS
RatingSymbolMaxUnitNotes
Junction to Ambient (Still Air)R
Junction to Ambient (@200 ft/min)Single Layer BoardR
Junction to Ambient (@200 ft/min)Four Layer BoardR
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, power dissipation of other components on the board, 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 surfac e as measured by the cold plate method (MIL SPEC–883
Method 1012.1).
θJA
θJA
θJA
θJB
θJC
53°C/W1, 2
38°C/W1, 2
22°C/W
14°C/W3
5°C/W4
MOTOROLA FAST SRAM
MCM69L736A•MCM69L818A
5
DC OPERA TING CONDITIONS AND CHARACTERISTICS
(0_C ≤ TA ≤ 70_C, Unless Otherwise Noted)
RECOMMENDED OPERATING CONDITIONS
Parameter
Input Reference DC VoltageV
Core Power Supply VoltageV
Output Driver Supply VoltageV
Active Power Supply Current(x18)
Quiescent Active Power Supply Current)I
Active Standby Power Supply CurrentI
Quiescent Standby Power Supply CurrentI
Sleep Mode Power Supply CurrentI
NOTES:
1. All data sheet parameters specified to full range of VDD unless otherwise noted. All voltages are referenced to voltage applied to VSS bumps.
2. Supply voltage applied to VDD connections.
3. Supply voltage applied to V
4. All power supply currents measured with outputs open or deselected.
5. VDD = VDD (max), t
6. VDD = VDD (max), t
7. VDD = VDD (max), t
8. VDD = VDD (max), t
9. VDD = VDD (Max), t
10. 200 mV ≥ Vin ≥ V
11. Although considerable latitude in the selection of the nominal dc value (i.e., rms value) of V
superimposed on V
DC Input Logic HighVIH (dc)V
DC Input Logic LowVIL (dc)– 0.3V
Input Reference DC VoltageV
Input Leakage CurrentI
Clock Input Signal VoltageV
Clock Input Differential V oltageV
Clock Input Common Mode Voltage Range (See Figure 3)VCM (dc)0.681.1V5
Clock Input Crossing Point Voltage RangeV
NOTES:
1. Inputs may undershoot to – 0.5 V (peak) for up to 20% t
2. Although considerable latitude in the selection of the nominal dc value (i.e., rms value) of V
superimposed on V
3. 0 V ≤ Vin ≤ V
4. Minimum instantaneous differential input voltage required for differential input clock operation.
5. Maximum rejectable common mode input voltage variation.
DDQ
may not exceed 5% of the dc component of V
ref
for all pins.
KHKH
(dc)0.61.1V2
ref
lkg(1)
in
(dc)0.1VDD + 0.6V4
DIF
X
(e.g., 2 ns at a clock cycle time of 10 ns).
.
ref
+ 0.1VDD + 0.3V
ref
– 0.1V1
ref
—± 5µA3
– 0.3VDD + 0.3V
0.681.1V
is supported, the peak–to–peak ac component
ref
MCM69L736A•MCM69L818A
6
MOTOROLA FAST SRAM
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