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ST7LITEUS2 Datenblatt(PDF) 24 Page - STMicroelectronics

Teilenummer ST7LITEUS2
Bauteilbeschribung  Interrupt management
PDF  136 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7LITEUS2 Datenblatt(HTML) 24 Page - STMicroelectronics

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Obsolete
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Central processing unit
ST7LITEUS2, ST7LITEUS5
24/136
Figure 7.
CPU registers
1.
X = Undefined value
5.3.4
Condition Code register (CC)
The 8-bit Condition Code register contains the interrupt mask and four flags representative
of the result of the instruction just executed. This register can also be handled by the PUSH
and POP instructions.
These bits can be individually tested and/or controlled by specific instructions.
Reset value: 111x1xxx
ACCUMULATOR
X INDEX REGISTER
Y INDEX REGISTER
STACK POINTER
CONDITION CODE REGISTER
PROGRAM COUNTER
70
1C
1 1 HI
NZ
RESET VALUE = RESET VECTOR @ FFFEh-FFFFh
70
70
70
0
7
15
8
PCH
PCL
15
8
70
RESET VALUE = STACK HIGHER ADDRESS
RESET VALUE = 1X
11 X 1 X X
RESET VALUE = XXh
RESET VALUE = XXh
RESET VALUE = XXh
7
0
111
H
I
N
Z
C
Read/Write
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