Electronic Components Datasheet Search |
|
ADC0844 Datasheet(PDF) 17 Page - National Semiconductor (TI) |
|
|
ADC0844 Datasheet(HTML) 17 Page - National Semiconductor (TI) |
17 / 20 page Applications Information (Continued) SAMPLE PROGRAM FOR ADC0844 — INS8039 INTERFACE CONVERTING TWO RATIOMETRIC, DIFFERENTIAL SIGNALS (Continued) 0054 32 53 JB1 LOOP ;IF INTR = 1 GOTO LOOP 0056 81 MOVX A,@R1 ;IF INTR = 0 INPUT A/D DATA 0057 89 01 ORL P1,&01H ;CLEAR THE A/D CHIP SELECT 0059 A0 MOV @R0,A ;STORE THE A/D DATA 005A 83 RET ;RETURN TO MAIN PROGRAM SAMPLE PROGRAM FOR ADC0848 — NSC800 INTERFACE 0008 NCONV EQU 16 000F DEL EQU 15 ;DELAY 50 µsec CONVERSION 001F CS EQU 1FH ;THE BOARD ADDRESS 3C00 ADDTA EQU 003CH ;START OF RAM FOR A/D ;DATA 0000' 08 09 0A 0B MUXDTA: DB 08H,09H,0AH,0BH ;MUX DATA 0004' 0C 0D 0E 0F DB 0CH,0DH,0EH,0FH 0008' 0E 1F START: LD C,CS 000A' 06 16 LD B,NCONV 000C' 21 0000' LD HL,MUXDTA 000F' 11 003C LD DE,ADDTA 0012' ED A3 STCONV: OUTI ;LOAD A/D’S MUX DATA ;AND START A CONVERSION 0014' EB EX DE,HL ;HL=RAM ADDRESS FOR THE ;A/D DATA 0015' 3E 0F LD A,DEL 0017' 3D WAIT: DEC A ;WAIT 50 µsec FOR THE 0018' C2 0013' JP NZ,WAIT ;CONVERSION TO FINISH 001B' ED A2 INI ;STORE THE A/D’S DATA ;CONVERTED ALL INPUTS? 001D' EB EX DE,HL 001E' C2 000E' JP NZ,STCONV ;IF NOT GOTO STCONV END Note 14: This routine sequentially programs the MUX data latch in the signal-ended mode. For CH1-CH8 a conversion is started, then a 50 µs wait for the A/D to complete a conversion and the data is stored at address ADDTA for CH1, ADDTA + 1 for CH2, etc. I/O Interface to NSC800 DS005016-28 www.national.com 17 |
Similar Part No. - ADC0844 |
|
Similar Description - ADC0844 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |