MC68EC000EI10 Freescale Semiconductor, MC68EC000EI10 Datasheet - Page 260

• Manufacturer Part Number: MC68EC000EI10
• Description: IC MPU 32BIT 10MHZ 68-PLCC
• Manufacturer: Freescale Semiconductor

Specifications of MC68EC000EI10

• Processor Type: M680x0 32-Bit
• Speed: 10MHz
• Voltage: 3.3V, 5V
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

Integer Instructions
PACK
Operation:
Assembler
Syntax:
Attributes:
Description: Adjusts and packs the lower four bits of each of two bytes into a single byte.
4-156
15
15
15
15
x’
u
x
When both operands are data registers, the adjustment is added to the value contained
in the source register. Bits 11 – 8 and 3 – 0 of the intermediate result are concatenated
and placed in bits 7 – 0 of the destination register. The remainder of the destination
register is unaffected.
Source:
Add Adjustment Word:
Resulting in:
Destination:
When the predecrement addressing mode is specified, two bytes from the source are
fetched and concatenated. The adjustment word is added to the concatenated bytes.
Bits 3 – 0 of each byte are extracted. These eight bits are concatenated to form a new
byte which is then written to the destination.
14
14
14
x’
x
u
13
13
13
x’
u
x
12
12
12
x’
x
u
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
Source (Unpacked BCD) + Adjustment
PACK – (Ax), – (Ay),# < adjustment >
PACK Dx,Dy,# < adjustment >
Unsized
11
11
11
a’
a
u
(MC68020, MC68030, MC68040)
10
10
10
b’
b
u
c’
9
c
9
9
u
16-BIT EXTENSION
Pack
d’
8
d
8
8
u
Dx
Dy
x’
a’
7
x
7
7
b’
x’
6
x
6
6
x’
c’
5
5
5
x
Destination (Packed BCD)
d’
x’
4
x
4
4
e’
e’
3
e
3
3
2
2
f’
2
f’
f
PACK
MOTOROLA
g’
g’
1
g
1
1
h’
h’
0
h
0
0
0