LTC2408C datasheet(30/36 Pages) LINER

部件名	LTC2408C

功能描述	4-/8-Channel 24-Bit uPower No Latency ADCs

Download	36 Pages

Scroll/Zoom	100%

制造商	LINER [Linear Technology]

网页	http://www.linear.com

标志

30 / 36 page

30

LTC2404/LTC2408

APPLICATIONS INFORMATION

DIN1

EQU

$00

This memory location holds the LTC2408’s bits 31 - 24

DIN2

EQU

$01

This memory location holds the LTC2408’s bits 23 - 16

DIN3

EQU

$02

This memory location holds the LTC2408’s bits 15 - 08

DIN4

EQU

$03

This memory location holds the LTC2408’s bits 07 - 00

MUX

EQU

$04

This memory location holds the MUX address data

*

***************************************

* Start GETDATA Routine

*

***************************************

*

ORG

$C000

Program start location

*

LDS

$CFFF

Top of C page RAM, beginning location of stack

INIT1

LDAA

#$2F

-,-,1,0;1,1,1,1

*

-, -, SS*-Hi, SCK-Lo, MOSI-Hi, MISO-Hi, X, X

STAA

PORTD

Keeps SS* a logic high when DDRD, bit 5 is set

LDAA

#$38

-,-,1,1;1,0,0,0

STAA

DDRD

SS* , SCK, MOSI are configured as Outputs

*

MISO, TxD, RxD are configured as Inputs

* DDRD’s bit 5 is a 1 so that port D’s SS* pin is a general output

LDAA

#$50

STAA

SPCR

The SPI is configured as Master, CPHA = 0, CPOL = 0

*

and the clock rate is E/2

*

(This assumes an E-Clock frequency of 4MHz. For higher

*

E-Clock frequencies, change the above value of $50 to a

*

value that ensures the SCK frequency is 2MHz or less.)

GETDATA PSHX

PSHY

PSHA

LDX

#$0

The X register is used as a pointer to the memory

*

locations that hold the conversion data

LDY

#$1000

*

*******************************

* The next routine sends data to the *

* LTC2408 an sets its MUX channel

*

*******************************

*

LDAA

$MUX

Retrieve MUX address

ORAA

#$08

Set the MUX’s ENABLE bit

STAA

SPDR

Transfer Accum. A contents to SPI register to initiate

*

serial transfer

WAITMUX LDAA

SPSR

Get SPI transfer status

BPL

WAITMUX If the transfer is not finished, read status

*

***************************************

* Enable the LTC2408

*

***************************************

*

BCLR

PORTD,Y %00100000 This sets the SS* output bit to a logic

*

low, selecting the LTC2408

*

***************************************

* The next short loop waits for the

*

* LTC2408’s conversion to finish before

*

* starting the SPI data transfer

*

***************************************

*

CONVEND LDAA

PORTD

Retrieve the contents of port D

ANDA

#%00000100

Look at bit 2

*

Bit 2 = Hi; the LTC2408’s conversion is not

*

complete

*

Bit 2 = Lo; the LTC2408’s conversion is complete

BNE

CONVEND

Branch to the loop’s beginning while bit 2 remains

*

high

类似零件编号 - LTC2408C

制造商	部件名	数据表	功能描述
Linear Technology	LTC2408	370Kb / 36P	4-/8-Channel 24-Bit Power No Latency ADCs

More results

类似说明 - LTC2408C

制造商	部件名	数据表	功能描述
Linear Technology	LTC2424	317Kb / 28P	4-/8-Channel 20-Bit uPower No Latency ADCs
	LTC2408	370Kb / 36P	4-/8-Channel 24-Bit Power No Latency ADCs
	LTC2404	370Kb / 36P	4-/8-Channel 24-Bit Power No Latency ADCs
	LTC2414	802Kb / 48P	8-/16-Channel 24-Bit No Latency ADCs
	LTC2418	802Kb / 48P	8-/16-Channel 24-Bit No Latency ADCs
	LTC2400	455Kb / 40P	24-Bit uPower No Latency ADC in SO-8
	LTC2414	792Kb / 48P	8-/16-Channel 24-Bit No Latency TM ADCs
	LTC2428	426Kb / 36P	4-/8-Channel 20-Bit mPower No Latency ADCs
	LTC2424	426Kb / 36P	4-/8-Channel 20-Bit mPower No Latency ADCs
	LTC2421	368Kb / 32P	1-/2-Channel 20-Bit UPower No Latency ADCs in MSOP-10

More results

LTC2408C 数据表(PDF) 30 Page - Linear Technology

LTC2408C 数据表(HTML) 30 Page - Linear Technology

类似零件编号 - LTC2408C

类似说明 - LTC2408C

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

数据表下载

链接网址

LTC2408C 数据表(PDF) 30 Page - Linear Technology

LTC2408C 数据表(HTML) 30 Page - Linear Technology

类似零件编号 - LTC2408C

类似说明 - LTC2408C

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

数据表 下载

链接网址

数据表下载