MCP402XEV Microchip Technology, MCP402XEV Datasheet - Page 45

• Manufacturer Part Number: MCP402XEV
• Description: BOARD EVAL FOR MCP402X
• Manufacturer: Microchip Technology

Specifications of MCP402XEV

• Main Purpose: Digital Potentiometer
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MCP4021
• Primary Attributes: 1 Single Pot, 10 kOhm, 64 Tap, Non Volatile
• Secondary Attributes: 2.7 ~ 5.5 V, 150 ppm/°C
• Processor To Be Evaluated: MCP402X
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

TABLE E-1:
© 2005 Microchip Technology Inc.
;************
;
;
;
;
; ex. To create a 250us delay, (250/5)-1 = 49
;
;
;************
; The value in W at the time of the CALL = x.
VAR5TcyDELAY
DLOOP3
;***********************************************************************************************
end
VARIABLE 5 Tcy DELAY UP TO 256*5Tcy+5Tcy
DLYCNT1 = W
DELAY = T(1 + 5 DLYCNT1 - 1) + CALL + RETLW
movlw
call
movwf
nop
decfsz
goto
retlw
clrwdt
.49
VAR5TcyDELAY
DLYCNT1
DLYCNT1,f
DLOOP3
.250
00066_MCP402XEV.ASM SOURCE CODE (CONTINUED)
;or NOP
;load .49 into WREG
;call VAR5TcyDELAY
00066_MCP402XEV.ASM Source Code
; LOADS CONTROLLING DLY # INTO PRIMARY COUNTER
; DECREMENT AND TEST ZERO
; CONTINUE LOOP
; preload W for the next CALL VAR5TcyDELAY
Delay = 5*Tcy + 5Tcy
DS51546B-page 41