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ST90158P9C6 Ver la hoja de datos (PDF) - STMicroelectronics

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ST90158P9C6 8/16-BIT MCU FAMILY WITH UP TO 64K ROM/OTP/EPROM AND UP TO 2K RAM ST-Microelectronics
STMicroelectronics ST-Microelectronics
ST90158P9C6 Datasheet PDF : 199 Pages
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ST90158 - DEVICE ARCHITECTURE
SYSTEM REGISTERS (Cont’d)
Figure 9. Pointing to a single group of 16
registers
BLOCK
NUMBER
31
30
29
28
27
26
25
REGISTER
GROUP
REGISTER
FILE
F
E
D
REGISTER
POINTER 0
set by:
srp #2
instruction
points to:
9
4
8
7
3
6
5
2
4
r15
3
1
2
r0
1
0
0
GROUP 1
addressed by
BLOCK 2
Figure 10. Pointing to two groups of 8 registers
BLOCK
NUMBER
31
30
29
28
27
26
25
addressed by
BLOCK 7
9
8
7
6
5
4
3
2
1
0
REGISTER
GROUP
REGISTER
FILE
F
REGISTER
POINTER 0
&
REGISTER
POINTER 1
E
set by:
srp0 #2
&
srp1 #7
D
instructions
point to:
4
r15
3
r8
GROUP 3
2
1
r7
r0
0
GROUP 1
addressed by
BLOCK 2
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