MC68EC000 Motorola, MC68EC000 Datasheet - Page 25

• Manufacturer Part Number: MC68EC000
• Description: Core Processor (SCM 68000)
• Manufacturer: Motorola

Overview
1-12
n + 10
n + 10
n + 2
n + 2
n + 4
n + 2
n + 4
n + 6
n + 8
n + 2
n + 4
n + 6
n + 8
n
n
n
n
INTEGER DATA:
ADDRESSES:
DECIMAL DATA:
MSD = MOST SIGNIFICANT DIGIT
LSD = LEAST SIGNIFICANT DIGIT
BIT DATA:
MSB = MOST SIGNIFICANT BIT
LSB = LEAST SIGNIFICANT BIT
MSB
MSB
MSB
MSB
MSD
15
15
15
15
15
14
14
14
14
14
BCD 4
BCD 0
13
13
13
13
13
Figure 1-6. Data Organization in Memory
12
12
12
12
12
Freescale Semiconductor, Inc.
EC000 CORE PROCESSOR USER’S MANUAL
BYTE 0
BYTE 2
For More Information On This Product,
11
11
11
11
11
2 BINARY CODED DECIMAL DIGITS = 1 BYTE
10
10
10
10
10
BCD 5
BCD 1
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1 LONG WORD = 32 BITS
9
9
9
9
9
1 ADDRESS = 32 BITS
1 WORD = 16 BITS
1 BYTE = 8 BITS
HIGH ORDER
LONG WORD 0
LOW ORDER
LONG WORD 1
LONG WORD 2
LSB
HIGH ORDER
LSD
ADDRESS 0
ADDRESS 1
ADDRESS 2
LOW ORDER
8
8
8
8
8
WORD 0
WORD 1
WORD 2
7
7
7
7
7
7
6
6
6
6
6
6
BCD 2
BCD 6
5
5
5
5
5
5
1 BYTE = 8 BITS
4
4
4
4
4
4
BYTE 1
BYTE 3
3
3
3
3
3
3
2
2
2
2
2
2
BCD 3
BCD 7
1
1
1
1
1
1
LSB
LSB
LSB
0
0
0
0
0
0
MOTOROLA
n + 1
n + 3