MC68EC020FG25 Freescale Semiconductor, MC68EC020FG25 Datasheet - Page 56
MC68EC020FG25
Manufacturer Part Number
MC68EC020FG25
Description
IC MPU 32 BIT 25MHZ 100-QFP
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68EC020AA16.pdf
(306 pages)
Specifications of MC68EC020FG25
Processor Type
M680x0 32-Bit
Speed
25MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
100-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Features
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Table 5-5 lists the combinations of SIZ1, SIZ0, A1, and A0 and the corresponding pattern
of the data transfer for write cycles from the internal multiplexer of the MC68020/EC020 to
the external data bus.
MOTOROLA
*
x = Don't care
NOTE: The OP tables on the external data bus refer to a particular byte of the operand that
is written on that section of the data bus.
Table 5-5. MC68020/EC020 Internal to External Data Bus
Due to the current implementation, this byte is output but never used.
Byte
Word
3 Bytes
Long Word
Transfer
Size
SIZ1
0
0
0
0
0
1
1
1
1
1
1
Size
SIZ0
Multiplexer—Write Cycles
1
1
1
1
1
0
0
0
0
0
0
M68020 USER’S MANUAL
A1
Address
0
0
1
1
0
0
1
1
x
x
x
A0
0
1
0
1
0
1
0
1
0
1
x
D31–D24
OP3
OP2
OP2
OP1
OP1
OP1
OP1
OP0
OP0
OP0
OP0
External Data Bus
D23–D16
OP3
OP3
OP2
OP2
OP1
OP2
OP1
OP1
OP0
OP1
OP0
Connection
D15–D8
OP2
OP1
OP3
OP2
OP3
OP3
OP2
OP1
OP2
OP1
OP0
*
*
D7–D0
OP0
OP3
OP3
OP2
OP3
OP2
OP1
OP3
OP2
OP1
OP0
*
5- 9
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