L9803 STMicroelectronics, L9803 Datasheet - Page 108

• Manufacturer Part Number: L9803
• Description: Super Smart Power Motor Driver With 8-bit Mcu, Ram, Eeprom, Adc, Wdg, Timers, Pwm And H-bridge Driver
• Manufacturer: STMicroelectronics

Instruction Set
108/126
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 which follows the opcode.
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.
Indexed (long):
The offset is a word, thus allowing 64Kb addressing space and requires 2 bytes after the
opcode.
No Offset, Long and Short Indexed
Instruction
LD
CP
AND, OR, XOR
ADC, ADD, SUB, SBC
BCP
No Offset and Short Indexed Instructions
Only
CLR
INC, DEC
TNZ
CPL, NEG
BSET, BRES
BTJT, BTJF
SLL, SRL, SRA, RLC, RRC
SWAP
CALL, JP
1 or 2’s Complement
Function
Clear
Increment/Decrement
Test Negative or Zero
Bit Operations
Bit Test and Jump Operations
Shift and Rotate Operations
Swap Nibbles
Call or Jump subroutine
Function
Load
Compare
Logical Operations
Arithmetic Additions/Substructions operations
Bit Compare
L9803