SX28AC/SS Parallax Inc, SX28AC/SS Datasheet - Page 36

• 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
© Parallax Inc.
ADD fr,W
ADD W,fr
CLR fr
CLR W
CLR !WDT
DEC fr
DECSZ fr
INC fr
INCSZ fr
RL fr
RR fr
SUB fr,W
SWAP fr
CLRB fr.bit
SB fr.bit
SETB fr.bit
SNB fr.bit
Mnemonic,
Mnemonic,
Operands
Operands
Add W to fr (fr = fr + W); carry bit is added if CF
bit in FUSEX register is cleared to 0
Add fr to W (W = W +fr); carry bit is added if CF
bit in FUSEX register is cleared to 0
Clear fr (fr = 0)
Clear W (W = 0)
Clear Watchdog Timer, clear prescaler if
assigned to the Watchdog (TO = 1, PD = 1)
Decrement fr (fr = fr – 1)
Decrement fr and Skip if Zero (fr = fr – 1 and skip
next instruction if result is zero)
Increment fr (fr = fr +1)
Increment fr and Skip if Zero (fr = fr +1 and skip
next instruction if result is zero)
Rotate fr Left through Carry (fr = << fr)
Rotate fr Right through Carry (fr = >> fr)
Subtract W from fr (fr = fr – W); complement of
the carry bit is subtracted if CF bit in FUSEX
register is cleared to 0
Swap high/low nibbles so fr xy = yx (fr = <> fr)
Clear Bit in fr (fr.bit = 0)
Test Bit in fr and Skip if set (test fr.bit and skip
next instruction if bit is 1)
Set Bit in fr (fr.bit = 1)
Test Bit in fr and Skip if clear ( test fr.bit and skip
next instruction if bit is 0)
Table 16-2:
Table 16-3:
Native
Description
Description
Native
SX Instruction Set: Arithmetic and Shift Operations
SX Instruction Set: Bitwise Operations
Page 36 of 51
Clock Cycles
Clock Cycles
(Slow Mode)
(Slow Mode)
4 or 8 (skip)
4 or 8 (skip)
4 or 8 (skip)
4 or 8 (skip)
4
4
4
4
4
4
4
4
4
4
4
4
4
Clock Cycles
Clock Cycles
1 or 2 (skip)
1 or 2 (skip)
1 or 2 (skip)
1 or 2 (skip)
(Turbo)
(Turbo)
1
1
1
1
1
1
1
1
1
1
1
1
1
0001 111f ffff
0001 110f ffff
0000 011f ffff
0000 0100 0000
0000 0000 0100
0000 111f ffff
0010 111f ffff
0010 101f ffff
0011 111f ffff
0011 011f ffff
0011 001f ffff
0000 101f ffff
0011 101f ffff
0100 bbbf ffff
0111 bbbf ffff
0101 bbbf ffff
0110 bbbf ffff
Opcode
Opcode
Rev 1.6 11/20/2006
www.parallax.com
Affected
C, DC, Z
C, DC, Z
C, DC, Z
Affected
TO, PD
none
none
none
none
none
none
none
Bits
Bits
C
C
Z
Z
Z
Z