45300 Parallax Inc, 45300 Datasheet - Page 40
![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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6 The Device Window
NOTE: To select an SX20 device, click on the SX18 selection. SX18 devices are no longer manufactured
by Ubicom
The Oscillator section specifies the fuse settings for the various clock sources, and oscillator modes that
are available in the SX devices, similar to the directives that can be given in the source code. Please note
that any fuse settings defined in the source code will be overwritten by the options selected here when
the SX controller is programmed from the Device window. See Table 4 - SX Clock Options, below, for a
summary of the available clock options.
In the Brownout section, you can specify the threshold voltage for a brownout reset or you may also turn
off brownout detection completely.
The Reset Timer section (SX48/52 devices only) should be set to the desired reset delay. The reset delay
is the amount of time the SX48/52 waits after a reset condition before executing the first program
instruction. This setting is useful for enabling a faster response after a sleep operation. It is critical to
test this with your final circuit since the reset delay is intended to make sure the external oscillator
(crystal, resonator, R/C circuit, etc) is running and stabilized before the first instruction executes.
The Options section allows you to set various fuse options. Turbo mode and enhanced Stack + OPTION
can only be selected for SX20/28 devices because SX48/52 devices always have these options active,
whereas the Sleep Clock option can only be selected for SX48/52 devices.
When you activate the Code Protect feature, the contents of the SX chip (except for the ID) cannot be read
back once it is programmed. Actually, when you read a code-protected device, meaningless data will be
read back instead.
The ID and E
memory) respectively.
The Program button initiates programming the SX chip with the assembled source code or the object
code loaded into the Device window.
Use the Verify and Read buttons to verify the code in the SX against that shown in the Device window or
to simply read the SX’s code into the Device window. These options are valuable should the code in an
SX chip be questionable or unknown. Note that verifies will fail and reads will not reveal the true code
Page 40 SX-Key/Blitz Development System Manual 2.0 Parallax, Inc.
32 KHz…4 MHz
External RC
Setting
Internal
HS1…3
XT1…2
LP1…2
2
Flash sections display the values contained in the ID and E
Description
Specifies the oscillator drive capacity for high speed, medium speed crystal/resonator, and low power
crystal/resonator clocks.
Specifies special drive for external resistor-capacitor clock circuits.
Specifies internal clock at indicated frequency.
Table 4 - SX Clock Options
2
Flash memory (the program
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