MC68EC000EI8 Freescale Semiconductor, MC68EC000EI8 Datasheet - Page 159

• Manufacturer Part Number: MC68EC000EI8
• Description: IC MPU 32BIT 85MHZ 68-PLCC
• Manufacturer: Freescale Semiconductor
• Series: M68000r

Specifications of MC68EC000EI8

• Processor Type: M680x0 32-Bit
• Speed: 8MHz
• Voltage: 3.3V, 5V
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Core Size: 32 Bit
• Cpu Speed: 8MHz
• 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: 8MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

BRA
Operation:
Assembler
Syntax:
Attributes:
Description: Program execution continues at location (PC) + displacement. The program
Condition Codes:
Instruction Format:
Instruction Fields:
MOTOROLA
15
0
Not affected.
8-Bit Displacement field—Twos complement integer specifying the number of bytes
counter contains the address of the instruction word of the BRA instruction plus two.
The displacement is a twos complement integer that represents the relative distance in
bytes from the current program counter to the destination program counter. If the 8-bit
displacement field in the instruction word is zero, a 16-bit displacement (the word
immediately following the instruction) is used. If the 8-bit displacement field in the
instruction word is all ones ($FF), the 32-bit displacement (long word immediately
following the instruction) is used.
16-Bit Displacement field—Used for a larger displacement when the 8-bit displacement
32-Bit Displacement field—Used for a larger displacement when the 8-bit displacement
14
1
between the branch instruction and the next instruction to be executed.
is equal to $00.
is equal to $FF.
13
A branch to the immediately following instruction automatically
uses the 16-bit displacement format because the 8-bit
displacement field contains $00 (zero offset).
1
12
0
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
PC + d
BRA < label >
Size = (Byte, Word, Long*)
*(MC68020, MC68030, MC68040 only)
11
0
32-BIT DISPLACEMENT IF 8-BIT DISPLACEMENT = $FF
16-BIT DISPLACEMENT IF 8-BIT DISPLACEMENT = $00
n
10
0
PC
Branch Always
9
0
(M68000 Family)
8
0
NOTE
7
6
5
8-BIT DISPLACEMENT
4
3
Integer Instructions
2
BRA
1
4-55
0