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DAC8512FSZ 数据表(PDF) 19 Page - Analog Devices

部件名 DAC8512FSZ
功能描述  5 V, Serial Input Complete 12-Bit DAC
PDF  20 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

DAC8512FSZ 数据表(HTML) 19 Page - Analog Devices

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DAC8512
–19–
REV. A
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 DAC output with contents of DAC register
*
BCLR
PORTD,Y
$20 Assert LD/
BSET
PORTD,Y
$20 Latch DAC register
*
BSET
PORTC,Y
$01 De-assert CS/
PULA When done, restore registers X, Y & A
PULY
PULX
RTS
** Return to Main Program **



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