MC68EC000EI16 Freescale Semiconductor, MC68EC000EI16 Datasheet - Page 147

• 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: -

BFFFO
Operation:
Assembler
Syntax:
Attributes:
Description: Searches the source operand for the most significant bit that is set to a value
Condition Codes:
Instruction Format:
MOTOROLA
15
1
0
of one. The bit offset of that bit (the bit offset in the instruction plus the offset of the first
one bit) is placed in Dn. If no bit in the bit field is set to one, the value in Dn is the field
offset plus the field width. The instruction sets the condition codes according to the bit
field value. The field offset and field width select the field. The field offset specifies the
starting bit of the field. The field width determines the number of bits in the field.
X — Not affected.
N — Set if the most significant bit of the field is set; cleared otherwise.
Z — Set if all bits of the field are zero; cleared otherwise.
V — Always cleared.
C — Always cleared.
14
1
—
X
REGISTER
13
1
N
*
12
0
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
BFFFO < ea > {offset:width},Dn
Unsized
Z
*
< bit offset > of Source Bit Scan
Do
11
1
V
0
(MC68020, MC68030, MC68040)
Find First One in Bit Field
10
0
C
0
9
0
OFFSET
8
1
7
1
6
1
Dn
Dw
5
MODE
4
EFFECTIVE ADDRESS
3
Integer Instructions
WIDTH
BFFFO
2
REGISTER
1
4-43
0