MCM63F733A Motorola, MCM63F733A Datasheet - Page 5

• Manufacturer Part Number: MCM63F733A
• Description: 128K x 32 Bit Flow-Through BurstRAM Synchronous Fast Static RAM
• Manufacturer: Motorola

NOTES:
MOTOROLA FAST SRAM
TRUTH TABLE
ASYNCHRONOUS TRUTH TABLE
LINEAR BURST ADDRESS TABLE
Deselect
Deselect
Deselect
Deselect
Deselect
Begin Read
Begin Read
Continue Read
Continue Read
Continue Read
Continue Read
Suspend Read
Suspend Read
Suspend Read
Suspend Read
Begin Write
Continue Write
Continue Write
Suspend Write
Suspend Write
1. X = Don’t Care. 1 = logic high. 0 = logic low.
2. Write is defined as either 1) any SBx and SW low, or 2) SGW is low.
3. G is an asynchronous signal and is not sampled by the clock K. G drives the bus immediately (t GLQX ) following G going low.
4. On write cycles that follow read cycles, G must be negated prior to the start of the write cycle to ensure proper write data setup times.
Next Cycle
1st Address (External)
G must also remain negated at the completion of the write cycle to ensure proper write data hold times.
Deselected
Operation
X . . . X00
X . . . X01
X . . . X10
X . . . X11
Selected
Read
Read
Write
(See Notes 1 through 5)
Address
External
External
External
Current
Current
Current
Current
Current
Current
Used
None
None
None
None
None
Next
Next
Next
Next
Next
Next
2nd Address (Internal)
SE1
(LBO = V SS )
1
0
0
X
X
0
0
X
X
1
1
X
X
1
1
0
X
1
X
1
X . . . X01
X . . . X10
X . . . X11
X . . . X00
SE2
ZZ
H
L
L
L
L
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
1
1
1
SE3
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
1
1
0
0
0
ADSP
X
X
X
X
X
X
X
0
0
1
1
0
1
1
1
1
1
1
1
1
3rd Address (Internal)
ADSC
X . . . X10
X . . . X00
X . . . X01
X . . . X11
X
X
X
0
0
0
0
1
1
1
1
1
1
1
1
0
1
1
1
1
G
H
X
X
X
L
ADV
X
X
X
X
X
X
X
0
0
0
0
1
1
1
1
X
0
0
1
1
G 3
X
X
X
X
X
X
X
1
0
1
0
1
0
1
0
X
X
X
X
X
4th Address (Internal)
High–Z
High–Z
High–Z
High–Z
High–Z
High–Z
High–Z
High–Z
High–Z
High–Z
High–Z
High–Z
High–Z
High–Z
High–Z
High–Z
DQx
DQ
DQ
DQ
DQ
Data Out (DQx)
I/O Status
X . . . X11
X . . . X00
X . . . X01
X . . . X10
High–Z
High–Z
High–Z
High–Z
MCM63F733A
Write 2, 4
WRITE
WRITE
WRITE
WRITE
WRITE
READ
READ
READ
READ
READ
READ
READ
READ
READ
X
X
X
X
X
X
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