Freescale Semiconductor, Inc.
SEMICONDUCTOR TECHNICAL DATA
MOTOROLA
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by MCM67Q909/D
MCM67Q909
512K x 9 Bit Separate I/O
Synchronous Fast Static RAM
The MCM67Q909 is a 4M–bit static random access memory, organized as
512K words of 9 bits. It features separate TTL input and output buffers, which
drive 3.3 V output levels, and incorporates input and output registers on–board
withhighspeedSRAM. Italsofeaturestransparent–writeanddatapass–through
capabilities.
ZP PACKAGE
PBGA
CASE 896A–02
The synchronous design allows for precise cycle control with the use of an
external single clock (K). The addresses (A0 – A18), data input (D0 – D8), data
output (Q0 – Q8), write–enable (W), chip–enable (E), andoutput–enable(G), are
registered on the rising edge of clock (K).
PIN NAMES
The control pins (E, W, G) function differently in comparison to most synchro-
nous SRAMs. This device will not deselect with E high. The RAM remains active
at all times. If E is registered high, the output pins (Q0 – Q8) will be driven if G
is registered low. The transparent write feature allows the output data to track the
input data. E, G, and W must be asserted to perform a transparent write (write
and pass–through). The input data is available at the ouputs on the next rising
edge of clock (K).
The pass–through function is always enabled. E high disables the write to the
array while allowing a pass–through cycle to occur on the next rising edge of
clock (K). Only a registered G high will three–state the outputs.
The MCM67Q909 is available in an 86–bump surface mount PBGA (Plastic
Ball Grid Array) package.
A0 – A18 . . . . . . . . . . . . . . . . . Address Input
E . . . . . . . . . . . . . . . . . . . . . . . . . Chip Enable
W . . . . . . . . . . . . . . . . . . . . . . . . Write Enable
G . . . . . . . . . . . . . . . . . . . . . . Output Enable
D0 – D8 . . . . . . . . . . . . . . . . . . . . Data Inputs
Q0 – Q8 . . . . . . . . . . . . . . . . . . Data Outputs
K . . . . . . . . . . . . . . . . . . . . . . . . . . Clock Input
SCK . . . . . . . . . . . . . . . . . . Scan Clock Input
SE . . . . . . . . . . . . . . . . . . . . . . . Scan Enable
SDI . . . . . . . . . . . . . . . . . . . . Scan Data Input
SDO . . . . . . . . . . . . . . . . . Scan Data Output
V
V
. . . . . . . . . . . . . . . . +5 V Power Supply
. . . . . . . . . . . . . . . . . . . . . . . . . . Ground
CC
SS
•
•
•
•
•
•
•
•
•
•
•
•
Single 5 V ± 5% Power Supply
Fast Cycle Time: 10 ns and 12 ns Max
Single Clock Operation
NC . . . . . . . . . . . . . . . . . . . . . No Connection
PIN ASSIGNMENT
TTL Input and Output Levels (Outputs LVTTL Compatible)
Address, Data Input, E, W, and G Registers On–Chip
100 MHz Maximum Clock Cycle Time
Self–Timed Write
Separate Data Input and Output Pins
Transparent–Write and Pass–Through
High Output Drive Capability: 50 pF/Output at Rated Access Time
Boundary Scan Implementation
4
5
6
7
8
9
1
2
3
A
B
E
W
G
V
SDI SDO A4
A6 A2
A0
CC
A16 A14
D7
K
V
V
D8
SS
SS
C
D
E
F
A15 A17
Q7
V
V
V
V
Q8
Q6
V
SS
SS
SS
SS
SS
V
V
V
V
V
V
V
V
V
D6
SS
SS
SS SS
SS
SS
86–Bump PBGA Package for High Speed Operation
D5
V
V
V
V
V
V
CC
SS
Q5
Q3
D1
SS
SS
SS
SS
SS
SS
SS
V
V
V
V
V
D4 Q4
CC
SS
SS SS
SS
SS
SS
G
D3
V
V
V
V
SS
V
D2
D0
Q2
SS
SS
SS
SS
H
V
A18
V
V
V
V
V
SS
SS SS
SS
J
Q1 A12 A10
V
A9
A8
SE
A5
A7
A1
A3
Q0
SS
K
A13 A11 SCK
V
CC
TOP VIEW
Not to Scale
REV 6
7/12/00
Motorola, Inc. 2000
MOTOROLA FAST SRAM
MCM67Q909
1
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