DAC8512GBC Analog Devices, DAC8512GBC Datasheet - Page 19
DAC8512GBC
Manufacturer Part Number
DAC8512GBC
Description
% V/ Serial Input Complete 12-Bit DAC
Manufacturer
Analog Devices
Datasheet
1.DAC8512GBC.pdf
(20 pages)
- Current page: 19 of 20
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REV. A
TFRLP
*
WAIT
*
*
*Update DAC output with contents of DAC register
*
*
LDAA
STAA
LDAA
BPL
INX
CPX
BNE
BCLR
BSET
BSET
PULA When done, restore registers X, Y & A
PULY
PULX
RTS
0,X
SPDR
SPSR
WAIT
#SDI2+1
TFRLP
PORTD,Y
PORTD,Y
PORTC,Y
Get a byte to transfer via SPI
Write SDI data reg to start xfer
Loop to wait for SPIF
SPIF is the MSB of SPSR
(when SPIF is set, SPSR is negated)
Increment counter to next byte for xfer
Are we done yet ?
If not, xfer the second byte
$20 Assert LD/
$20 Latch DAC register
$01 De-assert CS/
** Return to Main Program **
–19–
DAC8512
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