MC68EC000EI16 Freescale Semiconductor, MC68EC000EI16 Datasheet - Page 299
MC68EC000EI16
Manufacturer Part Number
MC68EC000EI16
Description
IC MPU 32BIT 16MHZ 68-PLCC
Manufacturer
Freescale Semiconductor
Specifications of MC68EC000EI16
Processor Type
M680x0 32-Bit
Speed
16MHz
Voltage
3.3V, 5V
Mounting Type
Surface Mount
Package / Case
68-PLCC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
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UNPK
Operation:
Assembler
Syntax:
Attributes:
Description: Places the two binary-coded decimal digits in the source operand byte into the
MOTOROLA
15
15
15
15
u
0
v
lower four bits of two bytes and places zero bits in the upper four bits of both bytes.
Adds the adjustment value to this unpacked value. Condition codes are not altered.
When both operands are data registers, the instruction unpacks the source register
contents, adds the extension word, and places the result in the destination register.
The high word of the destination register is unaffected.
Source:
Intermediate Expansion:
Add Adjustment Word:
Destination:
14
14
14
14
u
0
v
13
13
13
13
u
0
v
12
12
12
12
u
0
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
v
Source (Packed BCD) + Adjustment
UNPACK – (Ax), – (Ay),# < adjustment >
UNPK Dx,Dy,# < adjustment >
Unsized
11
11
11
11
a’
u
a
(MC68020, MC68030, MC68040)
10
10
10
10
b’
u
b
c’
9
u
9
c
9
9
Unpack BCD
16-BIT EXTENSION
d’
8
8
8
8
u
d
Dx
Dy
w
7
a
7
0
7
7
w
6
b
6
0
6
6
w
5
5
0
5
5
c
Destination (Unpacked BCD)
w
4
d
4
0
4
4
e’
3
3
3
3
e
e
Integer Instructions
2
2
2
2
f’
f
f
UNPK
g’
1
g
1
g
1
1
4-195
h’
0
h
0
h
0
0
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