ST7263BE6 STMicroelectronics, ST7263BE6 Datasheet - Page 133
ST7263BE6
Manufacturer Part Number
ST7263BE6
Description
LOW SPEED USB 8-BIT MCU FAMILY WITH UP TO 32K FLASH/ROM, DFU CAPABILITY, 8-BIT ADC, WDG, TIMER, SCI and I2C
Manufacturer
STMicroelectronics
Datasheet
1.ST7263BH6.pdf
(186 pages)
Specifications of ST7263BE6
4, 8, 16 Or 32 Kbytes Program Memory
high density Flash (HDFlash), FastROM or ROM with Read-Out and Write protection
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ST7263Bxx
12.1.5
12.1.6
Indexed (Short)
The offset is a byte, thus requires only one byte after the opcode and allows 00 - 1FE
addressing space.
Indexed (long)
The offset is a word, thus allowing 64 Kbyte addressing space and requires 2 bytes after the
opcode.
Indirect (Short, Long)
The required data byte to do the operation is found by its memory address, located in
memory (pointer).
The pointer address follows the opcode. The indirect addressing mode consists of two sub-
modes:
Indirect (short)
The pointer address is a byte, the pointer size is a byte, thus allowing 00 - FF addressing
space, and requires 1 byte after the opcode.
Indirect (long)
The pointer address is a byte, the pointer size is a word, thus allowing 64 Kbyte addressing
space, and requires 1 byte after the opcode.
Indirect Indexed (Short, Long)
This is a combination of indirect and short indexed addressing modes. The operand is
referenced by its memory address, which is defined by the unsigned addition of an index
register value (X or Y) with a pointer value located in memory. The pointer address follows
the opcode.
The indirect indexed addressing mode consists of two sub-modes:
Indirect Indexed (Short)
The pointer address is a byte, the pointer size is a byte, thus allowing 00 - 1FE addressing
space, and requires 1 byte after the opcode.
Indirect Indexed (Long)
The pointer address is a byte, the pointer size is a word, thus allowing 64 Kbyte addressing
space, and requires 1 byte after the opcode.
Table 51.
Long and Short instructions
ADC, ADD, SUB, SBC
Instructions supporting Direct, Indexed, Indirect and Indirect Indexed
addressing modes
AND, OR, XOR
CP
LD
Doc ID 7516 Rev 8
Arithmetic Addition/subtraction operations
Logical Operations
Function
Compare
Load
Instruction set
133/186
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