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ST7FOXU0 bảng dữ liệu(PDF) 21 Page - STMicroelectronics

tên linh kiện ST7FOXU0
Giải thích chi tiết về linh kiện  1 additional output line
PDF  123 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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ST7FOXU0 bảng dữ liệu(HTML) 21 Page - STMicroelectronics

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ST7FOXU0
Central processing unit
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5
Central processing unit
5.1
Introduction
This CPU has a full 8-bit architecture and contains six internal registers allowing efficient 8-
bit data manipulation.
5.2
Main features
●
63 basic instructions
●
Fast 8-bit by 8-bit multiply
●
17 main addressing modes
●
Two 8-bit index registers
●
16-bit stack pointer
●
Low power modes
●
Maskable hardware interrupts
●
Non-maskable software interrupt
5.3
CPU registers
The six CPU registers shown in Figure 5. They are not present in the memory mapping and
are accessed by specific instructions.
Figure 5.
CPU registers
ACCUMULATOR
X INDEX REGISTER
Y INDEX REGISTER
STACK POINTER
CONDITION CODE REGISTER
PROGRAM COUNTER
70
1C
11 H I
N Z
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
11X 1X X
RESET VALUE = XXh
RESET VALUE = XXh
RESET VALUE = XXh
X = Undefined Value



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