MC68882EI33A Freescale Semiconductor, MC68882EI33A Datasheet - Page 14

• Manufacturer Part Number: MC68882EI33A
• Description: IC FLOAT-PT COPROC 33MHZ 68PLCC
• Manufacturer: Freescale Semiconductor

Specifications of MC68882EI33A

• Processor Type: Floating-Point Co-Processor
• Speed: 33MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Operating Temperature (min): 0C
• Operating Temperature (max): 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Compliant

,.,
$:a~~~~en most-significant
!&&8882
32-Bit Data Bus Coprocessor Connection
tion of an MC68882 to an MC68020/MC68030
32-bit data bus when both the AO and SIZE pins are con-
tion of an M~m2
MOTOROU
14
MC68882/MC6801
MC68882
operation
data bus. The MC68882 is configured
netted
data bu~i,~k~WC68882
and. t~e ~0 pin is connected
s~~k~?arit
~.e., connect
The DSACK pins of the two devices are directly con-
8-Bit Data Bus Coprocessor Connection
16-Bit Data Bus @+@oce&sor Connection
16-bit,@~d~~ bus when the SIZE pin is connected
nected, although it is not necessary to connect the DSACKO
pin since the MC68882
ration.
MC68020/MC68030
MAIN PROCESSOR
The following
Figure
Figure 12 ill.y~~~#’the
Figure 13 illustrates the connect of an MC68882 to an
~
~
8
z
E
0
~
0
z
z
CLOCK
to VCC.
11
A20-A31
A16-A19
A13-A15
016-D23
DSACKO
DSACK1
FCO-FC2
D24-031
is configured to operate over a 16-bit data bus
to an MC68020
via an 8-, 16-, or 32-bit data bus,
A5-A12
D8-D15
A1-A4
DO-D7
d ata
illustrates
R~
E
E
DO to D16, DI to D17, . . . and D15 to D31).
AO
INTERFACING METHODS
pins
paragraphs
a-
—
—
~
O OR MC68030 INTERFACING
to an MC68020/MC68030
as a coprocessor over an 8-bit data
(DO-D15) must be connected
./,:, ,,. .
the coprocessor
,,,,,$:/;
never asserts it in this configu-
OECODE
is configured
SELECT
data pins (D1 6-D31 ) when the
CHIP
coprocessor
or MC68030
describe how to connect the
to GND. The sixteen
Freescale Semiconductor, Inc.
Vcc
For More Information On This Product,
to operate
to operate
interface
interface
E
A1-A4
D24-D31
D16-D23
DO-D?
for coprocessor
SIZE
D8-D15
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via a 32-bit
via a 16-bit
connec-
connec-
to VCC,
over a
over a
to the
least-
,,
twenty-four
connected to the eight most-significant
bus. The MC68882 is configured to operate over an 8-bit
data bus when the SIZE pin is connected to GND. The
MAIN PROCESSOR
figure 13. 8-Bit Data Bus Coprocessor
CLOCK
+
FCO-FC2
A16-A19 ~
=H
D16-D23
D24-D31
08-015
DO-D7 m
least-significant
J
DEcoDE I
data pins (DO-D23) must be
-
I
\
SIZE
v.
D24-D31
D16-D23
Da-D15
DO-07
DSACKO
OSACK1
data pins (D24-
COPROCESSOR
Connection
BRW/Rav.
CLOCK
?
. .
MC-
. . ....,,,. . . .. . .. ,,. -
3