45181 Parallax Inc, 45181 Datasheet - Page 152

• 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
– SX48/52 Register Map demonstrate the structure of the registers for the SX20/28 and the SX48/52,
respectively. In all SX instructions, bit 4 of the register address operand determines whether the global
registers are accessed or whether a bank of general-purpose registers is accessed.
Page 152 SX-Key/Blitz Development System Manual 2.0 Parallax, Inc.
*Port C is available as general-purpose RAM in the SX20.
* Bank 0 is available only when using semi-direct addressing.
$0A-
$0C-
$0D-
$0A-
$0C-
$0D-
$0B-
$0E-
$0B-
$0E-
$00-
$01-
$02-
$03-
$04-
$05-
$06-
$07-
$08-
$09-
$0F-
$00-
$01-
$02-
$03-
$04-
$05-
$06-
$07-
$08-
$09-
$0F-
Global
Global
Port C*
Port A
Port A
Port C
Port D
RTCC
Status
Port B
RTCC
Status
Port B
Port E
IND
IND
$0A
$0D
$0A
$0D
FSR
$0C
FSR
$0C
$08
$09
$0B
$0E
$0F
$0B
$0E
$0F
PC
PC
Figure 21 - SX20/28 Register Map
Figure 22 - SX48/52 Register Map
$1A-
$1C-
$1D-
$1A-
$1C-
$1D-
$1B-
$1E-
$1B-
$1E-
$10-
$11-
$12-
$13-
$14-
$15-
$16-
$17-
$18-
$19-
$1F-
$10-
$11-
$12-
$13-
$14-
$15-
$16-
$17-
$18-
$19-
$1F-
SX20/28 Register Map
SX48/52 Register Map
Bank 0* Bank 1
Bank 0
$A
$C
$D
$A
$C
$D
$B
$E
$F
$B
$E
$F
$0
$1
$2
$3
$4
$5
$6
$7
$8
$9
$0
$1
$2
$3
$4
$5
$6
$7
$8
$9
Bank 1
$A
$C
$D
$A
$C
$D
$B
$E
$F
$B
$E
$F
$0
$1
$2
$3
$4
$5
$6
$7
$8
$9
$0
$1
$2
$3
$4
$5
$6
$7
$8
$9
Bank 2
Bank 2
$A
$D
$A
$D
$B
$C
$E
$B
$C
$E
$0
$1
$2
$3
$4
$5
$6
$7
$8
$9
$F
$0
$1
$2
$3
$4
$5
$6
$7
$8
$9
$F
———
———
Bank 15
Bank 7
$A
$C
$D
$A
$C
$D
$0
$1
$2
$3
$4
$5
$6
$7
$8
$9
$B
$E
$F
$0
$1
$2
$3
$4
$5
$6
$7
$8
$9
$B
$E
$F