45181 Parallax Inc, 45181 Datasheet - Page 172

• Manufacturer Part Number: 45181
• Description: SX TECH TOOL KIT NO POWER
• Manufacturer: Parallax Inc
• Series: SXr
• Type: Microcontrollerr

Specifications of 45181

• Contents: SX Book, SX Key, SX Tech Board, Samples, Resonators, Cable and Manual
• Product: Microcontroller Basic Stamps
• Operating Supply Voltage: 5 V
• For Use With/related Products: SX MCUs
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

15 Appendix E: SX Data Sheet
Table 32 – SX20/28 Mode Register, below, defines the allowed mode values and their functions for the
SX20/28 devices. The gray areas are undefined at this time.
Page 172 SX-Key/Blitz Development System Manual 2.0 Parallax, Inc.
$07…$00
mov
mov
mov
mov
mov
mov
$0D
$0C
$0A
$0F
$0E
$0B
$09
$08
m
write TRIS_A
write LVL_A
write PLP_A
M, #$0F
!RA, #$03
M, #$0E
!RA, #$01
M, #$0D
!RA, #$02
mov !ra, w
SX20/28 MODE (m) Register and mov !r?, W
Table 32 – SX20/28 Mode Register
; Set up MODE for Direction configuration
; RA3:RA2 = Outputs, RA1:RA0 = Inputs
; Set up MODE for Pull-Up configuration
; RA3:RA1 = Normal, RA0 = Pull-up enabled
; Set up MODE for TTL/CMOS configuration
; RA3, RA2, RA0 = TTL, RA1 = CMOS
swap W with WKPEN_B
swap W with COMP_B
write WKEN_B
write WKED_B
write TRIS_B
write LVL_B
write PLP_B
mov !rb, w
write ST_B
write TRIS_C
write LVL_C
write PLP_C
write ST_C
mov !rc, w