參數(shù)資料
型號(hào): AD8803ARZ
廠商: Analog Devices Inc
文件頁數(shù): 6/16頁
文件大小: 0K
描述: IC DAC 8BIT OCTAL W/SD 16-SOIC
產(chǎn)品培訓(xùn)模塊: Data Converter Fundamentals
DAC Architectures
標(biāo)準(zhǔn)包裝: 48
系列: TrimDAC®
設(shè)置時(shí)間: 600ns
位數(shù): 8
數(shù)據(jù)接口: 串行
轉(zhuǎn)換器數(shù)目: 8
電壓電源: 單電源
功率耗散(最大): 27.5mW
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 16-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 16-SOIC
包裝: 管件
輸出數(shù)目和類型: 8 電壓,單極
采樣率(每秒): 1.7M
產(chǎn)品目錄頁面: 785 (CN2011-ZH PDF)
REV. A
–14–
AD8801/AD8803
PSHY
PSHA
*
* Enter Contents of SDI1 Data Register
*
LDAA
$0000
Hi-byte data loaded from memory
STAA
SDI1
SDI1 = data in location 0000H
*
* Enter Contents of SDI2 Data Register
*
LDAA
$0001
Low-byte data loaded from memory
STAA
SDI2
SDI2 = Data in location 0001H
*
LDX
#SDI1
Stack pointer at 1st byte to send via SDI
LDY
#$1000
Stack pointer at on-chip registers
*
* Reset AD8801 to one-half scale (AD8803 does not have a Reset input)
*
BCLR
PORTC,Y $02
Assert /RS
BSET
PORTC,Y $02
De-assert /RS
*
* Get AD8801/03 ready for data input
*
BCLR
PORTD,Y $20
Assert /CS
*
TFRLP
LDAA
0,X
Get a byte to transfer via SPI
STAA
SPDR
Write SDI data reg to start xfer
*
WAIT
LDAA
SPSR
Loop to wait for SPIF
BPL
WAIT
SPIF is the MSB of SPSR
*
(when SPIF is set, SPSR is negated)
INX
Increment counter to next byte for xfer
CPX
#SDI2+1
Are we done yet ?
BNE
TFRLP
If not, xfer the second byte
*
* Update AD8801 output
*
BSET
PORTD,Y $20
Latch register & update AD8801
*
PULA
When done, restore registers X, Y & A
PULY
PULX
RTS
** Return to Main Program **
Listing 3. AD8801/AD8803 to MC68HC11 Interface Program Source Code
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