mcf5272 Freescale Semiconductor, Inc, mcf5272 Datasheet - Page 74

• Manufacturer Part Number: mcf5272
• Description: Mcf5272 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

Programming Model
2.2.1 User Programming Model
As Figure 2-3 shows, the user programming model consists of the following registers:
2.2.1.1 Data Registers (D0–D7)
Registers D0–D7 are used as data registers for bit, byte (8-bit), word (16-bit), and longword
(32-bit) operations. They may also be used as index registers.
2.2.1.2 Address Registers (A0–A6)
The address registers (A0–A6) can be used as software stack pointers, index registers, or
base address registers and may be used for word and longword operations.
2-6
• 16 general-purpose 32-bit registers, D0–D7 and A0–A7
• 32-bit program counter
• 8-bit condition code register
31
31
31
31
Figure 2-3. ColdFire Programming Model
19
Must be zeros
15
MCF5272 User’s Manual
(CCR)
0
0
0
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
A2
A3
A4
A5
A6
A7
PC
CCR
MACSR
ACC
MASK
SR
VBR
CACR
ACR0
ACR1
ROMBAR
RAMBAR
MBAR
Data registers
Address registers
Stack pointer
Program counter
Condition code register
MAC status register
MAC accumulator
MAC mask register
Status register
Vector base register
Cache control register
Access control register 0
Access control register 1
ROM base address register
RAM base address register
Module base address register
MOTOROLA