MC68EC000EI12 Freescale Semiconductor, MC68EC000EI12 Datasheet - Page 210

• 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: -

Integer Instructions
EXT, EXTB
Operation:
Assembler
Syntax:
Attributes:
Description: Extends a byte in a data register to a word or a long word, or a word in a data
Condition Codes:
Instruction Format:
Instruction Fields:
4-106
15
0
Opmode field—Specifies the size of the sign-extension operation.
register to a long word, by replicating the sign bit to the left. If the operation extends a
byte to a word, bit 7 of the designated data register is copied to bits 15 – 8 of that data
register. If the operation extends a word to a long word, bit 15 of the designated data
register is copied to bits 31 – 16 of the data register. The EXTB form copies bit 7 of the
designated register to bits 31 – 8 of the data register.
Register field—Specifies the data register is to be sign-extended.
X — Not affected.
N — Set if the result is negative; cleared otherwise.
Z — Set if the result is zero; cleared otherwise.
V — Always cleared.
C — Always cleared.
010— Sign-extend low-order byte of data register to word.
011— Sign-extend low-order word of data register to long.
111— Sign-extend low-order byte of data register to long.
14
1
—
X
13
0
N
12
0
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
Destination Sign-Extended
EXT.W Dnextend byte to word
EXT.L Dnextend word to long word
EXTB.L Dnextend byte to long word (MC68020, MC68030
Size = (Word, Long)
Z
MC68040, CPU32)
11
1
V
0
10
0
C
0
9
0
(M68000 Family)
Sign-Extend
8
OPMODE
7
Destination
6
5
0
4
0
EXT, EXTB
3
0
2
REGISTER
MOTOROLA
1
0