LTC1291DM datasheet(11/20 Pages) LINER

11 / 20 page

LTC1291

Timing Diagram for Interface to the MC68HC11

LABEL MNEMONIC

OPERAND

COMMENTS

LTC1291 AI07

DOUT FROM LTC1291 STORED IN MC68HC11 RAM

LSB

MSB

#62

#63

B11

B10

CLK

DOUT

ANALOG

INPUTS

SCK

MC68HC11

DIN

MISO

LTC1291

CH0

CH1

BYTE 1

BYTE 2

MOSI

Hardware and Software Interface to Motorola MC68HC11

MC68HC11 CODE

In this example the DIN word configures the input MUX for

a single-ended input to be applied to CH0. The conversion

result is output MSB-first.

CLK

DOUT

MPU

RECEIVED

WORD

LTC1291 AI06

SGL/

DIFF

START

MSBF

B11

B10

DIN

MPU

TRANSMIT

WORD

BYTE 3 (DUMMY)

BYTE 2

SGL/

DIFF

BYTE 1

ODD/

EVEN

MSBF

BYTE 3

BYTE 2

BYTE 1

B11

B10

DON'T CARE

ODD/

EVEN

LABEL MNEMONIC

OPERAND

COMMENTS

LDAA

#$50

CONFIGURATION DATA FOR SPCR

STAA

$1028

LOAD DATA INTO SPCR ($1028)

LDAA

#$1B

CONFIG. DATA FOR PORT D DDR

STAA

$1009

LOAD DATA INTO PORT D DDR

LDAA

#$03

LOAD DIN WORD INTO ACC A

STAA

$50

LOAD DIN DATA INTO $50

LDAA

#$60

LOAD DIN WORD INTO ACC A

STAA

$51

LOAD DIN DATA INTO $51

LDAA

#$00

LOAD DUMMY DIN WORD INTO

ACC A

STAA

$52

LOAD DUMMY DIN DATA INTO $52

LDX

#$1000

LOAD INDEX REGISTER X WITH

$1000

LOOP

BCLR

$08,X,#$01

D0 GOES LOW (CS GOES LOW)

LDAA

$50

LOAD DIN INTO ACC A FROM $50

STAA

$102A

LOAD DIN INTO SPI, START SCK

APPLICATI

I FOR ATIO

LTC1291DM Datasheet(PDF) 11 Page - Linear Technology

LTC1291DM Datasheet(HTML) 11 Page - Linear Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Datasheet Download

Link URL