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ST90E158 Datasheet(PDF) 25 Page - STMicroelectronics

Part # ST90E158
Description  8/16-BIT MCU FAMILY WITH UP TO 64K ROM/OTP/EPROM AND UP TO 2K RAM
PDF  190 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST90E158 Datasheet(HTML) 25 Page - STMicroelectronics

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ST90158 - DEVICE ARCHITECTURE
SYSTEM REGISTERS (Cont’d)
Figure 9. Pointing to a single group of 16
registers
Figure 10. Pointing to two groups of 8 registers
31
30
29
28
27
26
25
9
8
7
6
5
4
3
2
1
0
F
E
D
4
3
2
1
0
BLOCK
NUMBER
REGISTER
GROUP
REGIST ER
FILE
REGISTER
POINTER 0
srp #2
set by:
instruction
points to:
GROUP 1
addressed by
BLOCK 2
r15
r0
31
30
29
28
27
26
25
9
8
7
6
5
4
3
2
1
0
F
E
D
4
3
2
1
0
BLOCK
NUMBER
REGIST ER
GROUP
REGISTER
FILE
REGISTER
POINTE R 0
srp0 #2
set by:
instructions
point to:
GROUP 1
addressed by
BLOCK 2
&
REGIST ER
POINTE R 1
srp1 #7
&
GROUP 3
addressed by
BLOCK 7
r7
r0
r15
r8
9



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