MCP402XEV Datasheet, PDF (34/46 Pages) Microchip Technology – Digital Potentiometer Evaluation Board User’s Guide

00066_MCP402XEV.ASM Source Code
TABLE E-1: 00066_MCP402XEV.ASM SOURCE CODE (CONTINUED)
;**********************************************************************************************
; Connections/Schematic
;**********************************************************************************************
;
; MCP pin MCP4021 MCP4022 MCP4023 MCP4024
; _______ _______ _______ _______ _______
;1
Vdd
Vdd
Vdd
Vdd
;2
Vss
Vss
Vss
Vss
;3
A
U/D
U/D
U/D
;4
W
CS
CS
CS
;5
CS
W
W
W
;6
B
A
A
-
;7
-
-
-
-
;8
U/D
-
-
-
;
; MCP402x PIC10F206
Ext Components
; _______ _________
______________
; Vdd
Vdd
0.1uF - Vss
; Vss
Vss
-
;A
-
2.5k - Vdd
;W
-
-
;B
-
2.5k - Vss
; CS
GP0/ICSPDAT (int pu)
2.5k - DECR - Vss, 7.5k - CS & BAV99
; U/D
GP1/ICSPCLK (int pu)
2.5k - INCR - Vss
;-
GP2/OSCOUT
0.01uF - BAV99 - 0.01uF - Vss
;-
GP3/Vpp (int pu)
optional SW or Jumper put on BFMP header pins 4 & 6
;
;**********************************************************************************************
; Assemble Time Variables
SaveWiper equ 1 ; comment this line prevent LV commands from Saving the Wiper
;
;**********************************************************************************************
; Configure the PIC
;**********************************************************************************************
list
p=10F206 ; list directive to define processor
#include <p10F206.inc> ; processor specific variable definitions
__CONFIG _MCLRE_OFF & _CP_OFF & _WDT_ON
ERRORLEVEL -302
© 2005 Microchip Technology Inc.
DS51546B-page 30