45111 Datasheet, PDF (49/184 Pages) List of Unclassifed Manufacturers – 14-DAY MONEY BACK GUARANTEE

7 The SASM Assembler
Setting
SX18/SX18AC/PINS18
SX20/SX20AC/PINS20
SX28/SX28AC/PINS28
BANKS1
BANKS2
BANKS4
BANKS8
OSCHS3
OSCHS2
OSCHS1
OSCXT2
OSCXT1
OSCLP2
OSCLP1
OSCRC
OSC4MHZ
OSC1MHZ
OSC128KHZ
OSC32KHZ
IFBD
IRC_CAL
BOR42
BOR26
BOR22
BOROFF
TURBO
OPTIONX or
STACKX
CARRYX
SYNC
WATCHDOG
PROTECT
Table 6 - SX20/28 DEVICE Settings
SX20, SX28 DEVICE Settings
Description
Specifies the device type
1 page, 1 bank
2 pages, 1 bank
4 pages, 4 banks
4 pages, 8 banks
High speed crystal/res., 1MHz…75MHz *
High speed crystal/res., 1MHz…50MHz *
High speed crystal/res., 1MHz…50MHz *
Normal crystal/res., 1MHz…24MHz *
Normal crystal/res., 32kHz…10MHz *
Low power crystal/res., 32kHz…1MHz *
Low power crystal/resonator, 32kHz *
External RC circuit
Specifies internal oscillator @ 4MHz
Specifies internal oscillator @ 1 MHz
Specifies internal oscillator @ 128 kHz
Specifies internal oscillator @ 32 kHz
Disables the internal feedback resistor, i.e.
an external feedback resistor is required
between the OSC1 and OSC2 pins
Specifies the calibration value for the
internal RC oscillator, options are
IRC_SLOW, IRC_4MHZ and IRC_FAST
Brownout to trigger at < 4.2 volts
Brownout to trigger at < 2.6 volts
Brownout to trigger at < 2.2 volts
Disable Brownout reset
Specifies turbo mode (1:1 execution)
Option register is extended to 8 bits,
Stack is extended to 8 levels
ADD and SUB instructions use Carry flag as input**
Enable input syncing
Enable the watchdog timer
Enable code protection
Default
SX18
BANKS8
OSCRC
4 MHz
internal feedback
resistor enabled
IRC_SLOW
BOROFF
Turbo off
(1:4 execution)
Option 6 bits
Stack 2 levels
Carry flag ignored
disabled
disabled
disabled
* Any of these OSC settings may be used when an external clock source is connected to OSC1.
** Many instructions are adversely affected by the carry flag when CARRYX is specified. See Appendix B (Chapter 1) and
Appendix C (Chapter 0) for more information.
SX-Key/Blitz Development System Manual 2.0 • Parallax, Inc. • Page 49