参数资料
型号: MCP402XEV
厂商: Microchip Technology
文件页数: 45/46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)
相关产品: MCP4021T-503E/MCDKR-ND - IC DGTL POT 50K 1CH 8DFN
MCP4021T-502E/MCDKR-ND - IC DGTL POT 5K 1CH 8DFN
MCP4021T-202E/MCDKR-ND - IC DGTL POT 2.1K 1CH 8DFN
MCP4021T-103E/MCDKR-ND - IC DGTL POT 10K 1CH 8DFN
MCP4021T-502E/MS-ND - IC DGTL POT 5K 1CH 8MSOP
MCP4021T-202E/MS-ND - IC DGTL POT 2.1K 1CH 8MSOP
MCP4021T-503E/MS-ND - IC DGTL POT 50K 1CH 8MSOP
MCP4021T-103E/MS-ND - IC DGTL POT 10K 1CH 8MSOP
MCP4021T-103E/SN-ND - IC DGTL POT 10K 1CH 8SOIC
MCP4021T-202E/SN-ND - IC DGTL POT 2.1K 1CH 8SOIC
更多...
00066_MCP402XEV.ASM Source Code
TABLE E-1:
00066_MCP402XEV.ASM SOURCE CODE (CONTINUED)
;************
; VARIABLE 5 Tcy DELAY UP TO 256*5Tcy+5Tcy
; DLYCNT1 = W
; DELAY = T(1 + 5 DLYCNT1 - 1) + CALL + RETLW
;
; ex. To create a 250us delay, (250/5)-1 = 49
; movlw .49 ;load .49 into WREG
; call VAR5TcyDELAY ;call VAR5TcyDELAY
;************
; The value in W at the time of the CALL = x. Delay = 5*Tcy + 5Tcy
VAR5TcyDELAY
movwf DLYCNT1 ; LOADS CONTROLLING DLY # INTO PRIMARY COUNTER
DLOOP3 clrwdt ;or NOP
nop
decfsz DLYCNT1,f ; DECREMENT AND TEST ZERO
goto DLOOP3 ; CONTINUE LOOP
retlw .250 ; preload W for the next CALL VAR5TcyDELAY
;***********************************************************************************************
end
? 2005 Microchip Technology Inc.
DS51546B-page 41
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