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ST7LITEUS5 Datasheet(PDF) 86 Page - STMicroelectronics

Part # ST7LITEUS5
Description  Interrupt management
PDF  136 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7LITEUS5 Datasheet(HTML) 86 Page - STMicroelectronics

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Instruction set
ST7LITEUS2, ST7LITEUS5
86/136
11.1.2
Immediate
Immediate instructions have 2 bytes, the first byte contains the opcode, the second byte
contains the operand value.
11.1.3
Direct
In Direct instructions, the operands are referenced by their memory address.
The direct addressing mode consists of two submodes:
Direct (short) addressing mode
the address is a byte, thus requires only 1 byte after the opcode, but only allows 00 - FF
addressing space.
Direct (long) addressing mode
The address is a word, thus allowing 64 Kbyte addressing space, but requires 2 bytes after
the opcode.
11.1.4
Indexed mode (no offset, short, long)
In this mode, the operand is referenced by its memory address, which is defined by the
unsigned addition of an index register (X or Y) with an offset.
The indirect addressing mode consists of three submodes:
Indexed mode (no offset)
There is no offset (no extra byte after the opcode), and allows 00 - FF addressing space.
Indexed mode (short)
The offset is a byte, thus requires only 1 byte after the opcode and allows 00 - 1FE
addressing space.
Indexed mode (long)
The offset is a word, thus allowing 64 Kbyte addressing space and requires 2 bytes after the
opcode.
Table 38.
Instructions supporting inherent immediate addressing mode
Immediate instruction
Function
LD
Load
CP
Compare
BCP
Bit compare
AND, OR, XOR
Logical operations
ADC, ADD, SUB, SBC
Arithmetic operations
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