MC68EC000EI20 Freescale Semiconductor, MC68EC000EI20 Datasheet - Page 326

• Manufacturer Part Number: MC68EC000EI20
• Description: IC MPU 32BIT 20MHZ 68-PLCC
• Manufacturer: Freescale Semiconductor

Specifications of MC68EC000EI20

• Processor Type: M680x0 32-Bit
• Speed: 20MHz
• Voltage: 3.3V, 5V
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

Floating Point Instructions
FBcc
Instruction Format:
Instruction Fields:
5-24
15
1
Size field—Specifies the size of the signed displacement.
Conditional Predicate field—Specifies one of 32 conditional tests as defined in Table
If Format = 0, then the displacement is 16 bits and is sign- extended before use.
If Format = 1, then the displacement is 32 bits.
14
1
3-23 Floating-Point Conditional Tests.
13
When a BSUN exception occurs, the main processor takes a
preinstruction exception. If the exception handler returns without
modifying the image of the program counter on the stack frame
(to point to the instruction following the FBcc), then it must clear
the cause of the exception (by clearing the NAN bit or disabling
the BSUN trap), or the exception will occur again immediately
upon return to the routine that caused the exception.
1
16-BIT DISPLACEMENT OR MOST SIGNIFICANT WORD OF 32-BITDISPLACEMENT
12
1
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
LEAST SIGNIFICANT WORD OF 32-BIT DISPLACEMENT (IF NEEDED)
Floating-Point Branch Conditionally
11
COPROCESSOR
10
ID
(MC6888X, MC68040)
9
8
0
NOTE
7
1
SIZE
6
5
CONDITIONAL PREDICATE
4
3
2
FBcc
MOTOROLA
1
0