45300 Parallax Inc, 45300 Datasheet - Page 56
![BOARD PROTO SX48](/photos/9/25/92507/mfg_45300_sml.jpg)
45300
Manufacturer Part Number
45300
Description
BOARD PROTO SX48
Manufacturer
Parallax Inc
Type
MCUr
Specifications of 45300
Contents
Board
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
SX48
For Use With
130-28029 - KIT PARTS SMART SENSORS45111 - MANUAL FOR SX-KEY/BLITZ VER. 2.028850 - CARRIER BOARD BOARD OF EDU USB
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
453001
Manufacturer:
LITTELFUSE/力特
Quantity:
20 000
Company:
Part Number:
453002
Manufacturer:
LITTELFU
Quantity:
1 000
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7 The SASM Assembler
7.3.15 The IRC_CAL Directive
This directive specifies the calibration value for the internal RC oscillator.
The syntax for the IRC_CAL directive is
IRC_CAL
IRC_SLOW | IRC_4MHZ | IRC_FAST
When the options IRC_SLOW or IRC_FAST are specified, the IRCTRIM bits in the FUSEX device
configuration register are programmed to the minimum or maximum frequency value. When the option
IRC_4MHZ is specified, the SX-Key software performs a calibration procedure whenever a program is
downloaded to the SX chip and adjusts the IRCTRIM bits so that the internally generated clock
frequency comes close as possible to 4 MHz.
If you don’t intend to use the internal RC oscillator, you should include an IRC_CAL IRC_SLOW or
IRC_CAL IRC_FAST directive in your program code in order to de-activate the calibration process,
which takes some extra time during downloading code to the SX device.
7.3.16 The LIST Directive
The LIST directive accepts various parameters to control the format of the list file and other assembler
option.
The various syntax forms of the LIST directive are:
Page 56 SX-Key/Blitz Development System Manual 2.0 Parallax, Inc.
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