参数资料
型号: MCP402XEV
厂商: Microchip Technology
文件页数: 39/46页
文件大小: 0K
描述: BOARD EVAL FOR MCP402X
标准包装: 1
主要目的: 数字电位器
嵌入式: 是,MCU,8 位
已用 IC / 零件: MCP4021
主要属性: 1 个单路电位器,10 千欧,64 抽头,非易失
次要属性: 2.7 ~ 5.5 V,150 ppm/°C
已供物品: 2 板,样品,CD
产品目录页面: 677 (CN2011-ZH PDF)
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00066_MCP402XEV.ASM Source Code
TABLE E-1:
HV_DecrExit
00066_MCP402XEV.ASM SOURCE CODE (CONTINUED)
clrwdt
call
movlw
call
btfss
goto
call
movlw
call
btfss
goto
clrf
retlw
State7
State8
State9
State10
State11
GPIO_TestUP
.10
VAR1000TcyDELAY
UP
HV_DecrExit
GPIO_TestDOWN
.10
VAR1000TcyDELAY
DOWN
HV_DecrExit
State
.6
; make GP1/INCR/UD an input (w/pu enabled)
; add a 10mS delay for settling time
; if UP gets released, exit
; make GP0/DECR/CS an input (w/pu enabled)
; add a 10mS delay for settling time
; if DOWN gets released, exit
; HV Increment w/o WL
call
movlw
call
clrf
retlw
State12
call
movlw
call
clrf
retlw
State13
call
call
clrf
retlw
State14
call
call
clrf
retlw
State15
goto
InitGPIO ; make GP0/DECR/CS & GP1/INCR/UD
.1
HV_Increment_WL_Disable
State
.11
; HV Increment w/o WL
InitGPIO ; make GP0/DECR/CS & GP1/INCR/UD
.1
HV_Decrement_WL_Disable
State
.12
; HV Decrement w/WL
InitGPIO ; make GP0/DECR/CS & GP1/INCR/UD
HV_Increment_WL_Enable
State
.13
; HV Decrement w/WL
InitGPIO ; make GP0/DECR/CS & GP1/INCR/UD
HV_Decrement_WL_Enable
State
.14
StateMachineReset
outputs, block undesired U/D commands
outputs, block undesired U/D commands
outputs, block undesired U/D commands
outputs, block undesired U/D commands
;***********************************************************************************************
; 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
? 2005 Microchip Technology Inc.
DS51546B-page 35
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