MC68EC000EI12 Freescale Semiconductor, MC68EC000EI12 Datasheet - Page 299

• Manufacturer Part Number: MC68EC000EI12
• Description: IC MPU 32BIT 12MHZ 68-PLCC
• Manufacturer: Freescale Semiconductor
• Series: 68K - M680X0r

Specifications of MC68EC000EI12

• Processor Type: M680x0 32-Bit
• Speed: 12MHz
• Voltage: 3.3V, 5V
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Core Size: 32 Bit
• Cpu Speed: 12MHz
• Digital Ic Case Style: PLCC
• No. Of Pins: 68
• Supply Voltage Range: 3V To 3.6V
• Operating Temperature Range: 0°C To +70°C
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Clock Frequency: 12MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

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