SX18AC/SO Parallax Inc, SX18AC/SO Datasheet - Page 33

• 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: -

Program Control instruction
CALL addr8
JMP addr9
NOP
RET
RETP
RETI
RETIW
RETW lit
System Control Instructions
BANK addr8
IREAD
PAGE addr12
SLEEP
© 1998 Scenix Semiconductor, Inc. All rights reserved.
Mnemonic,
Operands
Call Subroutine:
top-of-stack = program counter + 1
PC(7:0) = addr8
program counter (8) = 0
program counter (10:9) = PA1:PA0
Jump to Address:
PC(7:0) = addr9(7:0)
program counter (8) = addr9(8)
program counter (10:9) = PA1:PA0
No Operation
Return from Subroutine
(program counter = top-of-stack)
Return from Subroutine Across Page Boundary
(PA1:PA0 = top-of-stack (10:9) and
program counter = top-of-stack)
Return from Interrupt (restore W, STATUS,
FSR, and program counter from shadow regis-
ters)
Return from Interrupt and Adjust RTCC with W
(restore W, STATUS, FSR, and program
counter from shadow registers; and subtract W
from RTCC register)
Return from Subroutine with Literal in W
(W = lit and program counter = top-of-stack)
Load Bank Number into FSR(7:5)
FSR(7:5) = addr8(7:5)
Read Word from Instruction Memory
MODE:W = data at (MODE:W)
Load Page Number into STATUS(7:5)
STATUS(7:5) = addr12(11:9)
Power Down Mode
WDT = 00h, TO = 1, PD = 1, stop oscillator
Table 16-1. The SX Instruction Set (Continued)
Description
- 33 -
(Compatible)
Cycles
2
2
1
2
2
2
2
2
1
1
1
1
(Turbo)
Cycles
3
3
1
3
3
3
3
3
1
4
1
1
1001 kkkk kkkk
101k kkkk kkkk
0000 0000 0000
0000 0000 1100
0000 0000 1101
0000 0000 1110 all STA-
0000 0000 1111 all STA-
1000 kkkk kkkk
0000 0001 1nnn
0000 0100 0001
0000 0001 0nnn
0000 0000 0011 TO, PD
SX18AC / SX20AC / SX28AC
Opcode
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Affected
Flags
none
none
none
none
none
none
none
none
none
TUS
TUS