MC68030RC25C Freescale Semiconductor, MC68030RC25C Datasheet - Page 51

• Manufacturer Part Number: MC68030RC25C
• Description: IC MPU 32BIT ENHANCED 128-PGA
• Manufacturer: Freescale Semiconductor

Specifications of MC68030RC25C

• Processor Type: M680x0 32-Bit
• Speed: 25MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 128-PGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

2
2-6
A bit operand is specified by a base address that selects one byte in memory
The data types supported in memory by the MC68030 are bit and bit field
2-2. Note that all of these data types can be accessed at any byte address.
Coprocessors can implement any data types and lengths up to 255 bytes.
values).
m o s t
does not require data to be aligned on word boundaries (refer to Figure
2-2), but the most efficient data transfers occur when data is aligned on the
same byte boundary as its operand size. However, instruction words must
data; integer data of 8, 16, or 32 bits; 32-bit addresses; and BCD data (packed
and unpacked). These data types are organized in memory as shown in Figure
For example, the MC68881/MC68882 floating-point coprocessors support
memory accesses for quad-word-sized items (double-precision floating-point
(the base byte) and a bit number that selects the one bit in this byte. The
be aligned on word boundaries.
significant bit of the byte is bit 7.
31
BYTE $OOOOOOO0
BYTE
BYTE $FFFFFFFC
$00000004
WORD $00000004
WORD $OOOOOOOO
Figure 2-1. Memory Operand Address
WORD $FFFFFFFC
•
I
f
I
]
I
23
MC68030 USER'S MANUAL
BYTE $00000005
BYTE $00000001
BYTE $FFFFFFFO
LONG WORD $OOOO00OO
LONG WORD
LONG WORD $FFFFFFFC
I
15
00000004
BYTE $00000002
BYTE
BYTE $FFFFFFFE
$00000006
WORD $00000002
WORD $00000006
WORD $FFFFFFFE
I
1
I
I
I
7
BYTE $00000003
BYTE
BYTE $FFFFFFFF
$O00OOOO7
MOTOROLA