SX18AC/SO Parallax Inc, SX18AC/SO Datasheet - Page 34

• Manufacturer Part Number: SX18AC/SO
• Description: IC MCU 2K FLASH 50MHZ SO-18
• Manufacturer: Parallax Inc
• Series: SXr

Specifications of SX18AC/SO

• Core Processor: RISC
• Core Size: 8-Bit
• Speed: 50MHz
• Number Of I /o: 12
• Program Memory Size: 3KB (2K x 12)
• Program Memory Type: FLASH
• Ram Size: 137 x 8
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 18-SOIC
• Voltage - Supply (vcc/vdd): -
• Eeprom Size: -
• Data Converters: -
• Peripherals: -
• Connectivity: -

SX18AC / SX20AC / SX28AC
16.1 Equivalent Assembler Mnemonics
Some assemblers support additional instruction mne-
monics that are special cases of existing instructions or
alternative mnemonics for standard ones. For example,
an assembler might support the mnemonic “CLC” (clear
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CLC
CLZ
JMP W
JMP PC+W
MODE imm4
NOT W
SC
SKIP
Note 1: The JMP W or JMP PC+W instruction takes 4 cycles in the “compatible” clocking mode or 3 cycles in the
“turbo” clocking mode.
Note 2: The SC instruction takes 1 cycle if the tested condition is false or 2 cycles if the tested condition is true.
Note 3: The assembler converts the SKIP instruction into a SNB or SB instruction that tests the least significant bit
of the program counter, choosing SNB or SB so that the tested condition is always true. The instruction takes 4 cycles
in the “compatible” clocking mode or 2 cycles in the “turbo” clocking mode.
Syntax
Clear Carry Flag
Clear Zero Flag
Jump Indirect W
Jump Indirect W Relative
Move Immediate to MODE
Register
Complement W
Skip if Carry Flag Set
Skip Next Instruction
Table 16-2. Equivalent Assembler Mnemonics
Description
- 34 -
CLRB $03.0
CLRB $03.2
MOV $02,W
ADD $02,W
MOV M,#lit
XOR W,#$FF
SB $03.0
SNB $02.0 or SB $02.0
carry), which is interpreted the same as the instruction
“clrb $03.0” (clear bit 3 in the STATUS register). Some of
the commonly supported equivalent assembler mnemon-
ics are described in
Equivalent
4 or 3 (note 1)
4 or 3 (note 1)
1 or 2 (note 2)
4 or 2 (note 3)
Cycles
1
1
1
1
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