SDA5523 Micronas Semiconductor, SDA5523 Datasheet - Page 26

• Manufacturer Part Number: SDA5523
• Description: SDA55xx TVText Pro
• Manufacturer: Micronas Semiconductor

SDA 55xx
2.2.10. Instruction Set
The assembly language uses the same instruction set
and the same instruction opcodes as the 8051 micro-
computer family.
2.2.10.1. Notes on Data Addressing Modes
Rn
direct
@Ri
#data
#data 16 – 16-bit constant included as Bytes 2 & 3
bit
Operations
(MOVX …) are used to access the extended internal
data RAM (XRAM).
2.2.10.2. Notes on Program Addressing Modes
addr 16
addr 11
rel
26
– Working register R0 - R7.
– 128 internal RAM-locations, any I/O-
– Indirect
– 8-bit constant included in instruction.
– 128 software flags, any I/O-pin, control
– Destination address for LCALL & LJMP
– Destination address for ACALL & AJMP
– SJMP and all conditional jumps include
working
port, control or status register.
addressed by register R0 or R1.
of instruction.
or status bit in special function registers.
may be anywhere within the program
memory address space.
will be within the same 2 KByte of the
following instruction.
an 8-bit offset Byte. Range is +127/-128
Bytes relative to first Byte of the follow-
ing instruction.
on
internal
external
data
RAM-location
Sept. 10, 2004; 6251-556-3DS
memory
DATA SHEET
Micronas