SX28AC/SS Parallax Inc, SX28AC/SS Datasheet - Page 39

• Manufacturer Part Number: SX28AC/SS
• Description: IC MCU 2K FLASH 50MHZ 28SSOP
• Manufacturer: Parallax Inc
• Series: SXr

Specifications of SX28AC/SS

• Core Processor: RISC
• Core Size: 8-Bit
• Speed: 75MHz
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 20
• Program Memory Size: 3KB (2K x 12)
• Program Memory Type: FLASH
• Ram Size: 136 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-SSOP
• Product: Microcontroller Basic Stamps
• Flash: 2 KBytes
• Timers: 8 bit
• Operating Supply Voltage: 3 to 5.5 V
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: No RoHS Version Available

Parallax SX20AC/SX28AC
16.1.
Some
mnemonics that are special cases of existing instructions
or alternative mnemonics for standard ones. For example,
an assembler might support the mnemonic “CLC” (clear
Note 1: The JMP W and JMP PC+W instructions take 4 cycles in the Slow 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 Slow clocking mode
or 2 cycles in theTurbo clocking mode.
© Parallax Inc.
CLC
CLZ
JMP W
JMP PC+W
MODE imm4
NOT W
SC
SKIP
assemblers
Equivalent Assembler Mnemonics
Syntax
support
Clear Carry bit
Clear Zero bit
Jump Indirect W
Jump Indirect W Relative
Move Immediate to MODE
Register
Complement of W
Skip if Carry bit set
Skip Next Instruction
Table 16-7: SX Equivalent Assembler Mnemonics
additional
Description
instruction
Page 39 of 51
carry), which is interpreted the same as the instruction
“clrb $03.0” (clear bit 0 in the STATUS register). Some
of the commonly supported equivalent assembler
mnemonics are described in Table 16-7.
SNB $02.0 or SB $02.0
XOR W,#$FF
Equivalent
CLRB $03.0
MOV $02,W
CLRB $03.2
ADD $02,W
MOV M,#lit
SB $03.0
4 or 3 (see Note 1)
4 or 3 (see Note 1)
1 or 2 (see Note 2)
4 or 2 (see Note 3)
Cycles
Rev 1.6 11/20/2006
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