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MCP402XEV датащи(PDF) 39 Page - Microchip Technology

номер детали MCP402XEV
подробное описание детали  Digital Potentiometer Evaluation Board User?셲 Guide
PDF  46 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP402XEV датащи(HTML) 39 Page - Microchip Technology

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00066_MCP402XEV.ASM Source Code
© 2005 Microchip Technology Inc.
DS51546B-page 35
HV_DecrExit clrwdt
call
GPIO_TestUP
; make GP1/INCR/UD an input (w/pu enabled)
movlw
.10
call
VAR1000TcyDELAY
; add a 10mS delay for settling time
btfss
UP
; if UP gets released, exit
goto
HV_DecrExit
call
GPIO_TestDOWN
; make GP0/DECR/CS an input (w/pu enabled)
movlw
.10
call
VAR1000TcyDELAY
; add a 10mS delay for settling time
btfss
DOWN
; if DOWN gets released, exit
goto
HV_DecrExit
clrf
State
retlw
.6
State7
State8
State9
State10
State11
; HV Increment w/o WL
call
InitGPIO
; make GP0/DECR/CS & GP1/INCR/UD outputs, block undesired U/D commands
movlw
.1
call
HV_Increment_WL_Disable
clrf
State
retlw
.11
State12
; HV Increment w/o WL
call
InitGPIO
; make GP0/DECR/CS & GP1/INCR/UD outputs, block undesired U/D commands
movlw
.1
call
HV_Decrement_WL_Disable
clrf
State
retlw
.12
State13
; HV Decrement w/WL
call
InitGPIO
; make GP0/DECR/CS & GP1/INCR/UD outputs, block undesired U/D commands
call
HV_Increment_WL_Enable
clrf
State
retlw
.13
State14
; HV Decrement w/WL
call
InitGPIO
; make GP0/DECR/CS & GP1/INCR/UD outputs, block undesired U/D commands
call
HV_Decrement_WL_Enable
clrf
State
retlw
.14
State15
goto
StateMachineReset
;***********************************************************************************************
; Low Power Mode
;***********************************************************************************************
LowPowerMode
movlw
b’11111000’
; make all I/O pins an output
tris
GPIO
movlw
b’11111111’
movwf
GPIO
; output high
movlw
b’10011111’
; disable Wake-Up on Pin Change,
; enable weak pullups for button inputs
; T0CS must be 0 for GP2 TRIS to be active
; set up for 2.3ms WDT
option
sleep
; put into lowest power setting
goto
Start
; shouldn’t get here
SUBS
CODE
TABLE E-1:
00066_MCP402XEV.ASM
SOURCE CODE (CONTINUED)



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