ST7260E1 STMicroelectronics, ST7260E1 Datasheet - Page 103

• Manufacturer Part Number: ST7260E1
• Description: LOW SPEED USB 8-BIT MCU FAMILY WITH UP TO 8K FLASH/ROM AND SERIAL COMMUNICATION INTERFACE (SCI)
• Manufacturer: STMicroelectronics

Specifications of ST7260E1

• 4 Or 8 Kbytes Program Memory: high density Flash (HDFlash), or FastROM with readout and write protection

ST7260xx
15.1.2
15.1.3
15.1.4
Table 49.
Immediate
Immediate instructions have two bytes, the first byte contains the opcode, the second byte
contains the operand value.
Table 50.
Direct
In Direct instructions, the operands are referenced by their memory address.
The direct addressing mode consists of two sub-modes:
Direct (short)
The address is a byte, thus requires only one byte after the opcode, but only allows 00 - FF
addressing space.
Direct (long)
The address is a word, thus allowing 64 Kbyte addressing space, but requires 2 bytes after
the opcode.
Indexed (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 sub-modes:
Indexed (no offset)
There is no offset, (no extra byte after the opcode), and allows 00 - FF addressing space.
Indexed (short)
The offset is a byte, thus requires only one byte after the opcode and allows 00 - 1FE
addressing space.
SLL, SRL, SRA, RLC, RRC
SWAP
LD
CP
BCP
AND, OR, XOR
ADC, ADD, SUB, SBC
Inherent instructions
Immediate instructions
Instruction
Instruction
Shift and Rotate Operations
Swap Nibbles
Load
Compare
Bit Compare
Logical Operations
Arithmetic Operations
Function
Function
Instruction set
103/139