MPXM2102AS datasheet(378/670 Pages) MOTOROLA

378 / 670 page

AN1305

3–232

Motorola Sensor Device Data

www.motorola.com/semiconductors

09E1 A1 40

CMP

#$40

09E3 26 06

BNE

$09EB

09E5 3F 59

CLR

$59

slope = 63;

09E7 A6 3F

LDA

#$3F

09E9 B7 5A

STA

$5A

/* else both jumpers are removed or installed... don’t change the slope */

09EB CD 08 37

JSR

$0837

atodtemp = read_a2d();

/* atodtemp = raw a/d ( 0..255 ) */

09EE 3F 55

CLR

$55

09F0 B7 56

STA

$56

09F2 B0 5D

SUB

$5D

if ( atodtemp <= xdcr_offset )

09F4 B7 58

STA

$58

09F6 B6 5C

LDA

$5C

09F8 A8 80

EOR

#$80

09FA B7 57

STA

$57

09FC B6 55

LDA

$55

09FE A8 80

EOR

#$80

0A00 B2 57

SBC

$57

0A02 BA 58

ORA

$58

0A04 22 08

BHI

$0A0E

0A06 B6 5C

LDA

$5C

atodtemp = xdcr_offset;

0A08 B7 55

STA

$55

0A0A B6 5D

LDA

$5D

0A0C B7 56

STA

$56

0A0E B6 56

LDA

$56

atodtemp –=

xdcr_offset; /* remove the offset */

0A10 B0 5D

SUB

$5D

0A12 B7 56

STA

$56

0A14 B6 55

LDA

$55

0A16 B2 5C

SBC

$5C

0A18 B7 55

STA

$55

0A1A B6 56

LDA

$56

atodtemp *= slope; /* convert to psi */

0A1C B7 58

STA

$58

0A1E B6 55

LDA

$55

0A20 B7 57

STA

$57

0A22 B6 59

LDA

$59

0A24 B7 66

STA

$66

0A26 B6 5A

LDA

$5A

0A28 B7 67

STA

$67

0A2A CD 0A 3F

JSR

$0A3F

0A2D BF 55

STX

$55

0A2F B7 56

STA

$56

0A31 CD 08 FE

JSR

$08FE

cvt_bin_dec( atodtemp ); /* convert to decimal and display */

0A34 20 93

BRA

$09C9

}

0A36 81

RTS

}

/************************************************************************/

main()

{

0A37 CD 08 CE

JSR

$08CE

initio(); /* set–up the processor’s i/o */

0A3A AD 8D

BSR

$09C9

display_psi();

0A3C 20 FE

BRA

$0A3C

while(1);

/* should never get here */

0A3E 81

RTS

}

0A3F BE 58

LDX

$58

0A41 B6 67

LDA

$67

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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