L9803 STMicroelectronics, L9803 Datasheet - Page 109

• 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

L9803
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 64Kb addressing
space, and requires 1 byte after the opcode.
Available Long and Short Indirect
Instructions
LD
CP
AND, OR, XOR
ADC, ADD, SUB, SBC
BCP
Short Indirect Instructions Only
CLR
INC, DEC
TNZ
CPL, NEG
BSET, BRES
BTJT, BTJF
SLL, SRL, SRA, RLC, RRC
SWAP
CALL, JP
Bit Operations
Shift and Rotate Operations
Function
Load
Compare
Logical Operations
Arithmetic Additions/Substructions operations
Bit Compare
Function
Clear
Increment/Decrement
Test Negative or Zero
1 or 2’s Complement
Bit Test and Jump Operations
Swap Nibbles
Call or Jump subroutine
Instruction Set
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