45300 Parallax Inc, 45300 Datasheet - Page 154
![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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15 Appendix E: SX Data Sheet
(JMP). This is necessary to achieve computed jumps and subroutine calls across page boundaries in code
memory. Only 11 bits are used in SX20/28 parts. See The Jump Instruction for examples detailing how
the program counter and the STATUS register are used in typical situations.
15.2.8 STATUS Register ($03)
This register holds the arithmetic status of the ALU, the page select bits, and the reset status. The status
register is accessible during run-time but the reset bits, PD and TO, are read only. Care should be used
when writing to the STATUS register as the ALU status bits will be updated upon completion of the
write operation thereby leaving the STATUS register with a result that is different than intended.
Therefore, it is recommended that only SETB, CLRB and PAGE instructions be used on this register.
Bits 7-5:
Bit 4:
Bit 3:
Bit 2:
Page 154 SX-Key/Blitz Development System Manual 2.0 Parallax, Inc.
Page select bits (PA2:PA0) *
000 = Page 0 ($000 - $1FF)
001 = Page 1 ($200 - $3FF)
010 = Page 2 ($400 - $5FF)
011 = Page 3 ($600 - $7FF)
100 = Page 4 ($800 - $9FF)
101 = Page 5 ($A00 - $BFF)
110 = Page 6 ($C00 - $DFF)
111 = Page 7 ($E00 - $FFF)
Time Out bit (TO)
Set (1) after power up, or executing a CLR !WDT or SLEEP instruction.
Cleared (0) after a watchdog time-out has occurred.
Power Down Bit (PD)
Set (1) after power up, or executing a CLR !WDT instruction.
Cleared (0) by a SLEEP instruction.
Zero Bit (Z)
Set (1) when the result of the most recent math operation was zero.
Cleared (0) when the result of the most recent math operation was non-
zero.
*
For devices of less than 4 K code space, unused bits of PA2:PA0 may
be used as general purpose read/write bits.
PA2
7
PA1
6
PA0
5
TO
4
STATUS
PD
3
Z
2
DC
1
C
0
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