參數(shù)資料
型號(hào): AD7303BR
廠商: ANALOG DEVICES INC
元件分類: DAC
英文描述: +2.7 V to +5.5 V, Serial Input, Dual Voltage Output 8-Bit DAC
中文描述: SERIAL INPUT LOADING, 1.2 us SETTLING TIME, 8-BIT DAC, PDSO8
封裝: SOIC-8
文件頁(yè)數(shù): 15/16頁(yè)
文件大?。?/td> 361K
代理商: AD7303BR
AD7303
–15–
REV. 0
LDAA
#$18
0, 0, 0, 1, 1, 0, 0, 0
SCLK and DIN enabled as outputs
*
LDAA
STAA
#$53
SPCR
SPI on, Master mode, CPOL=0, CPHA=0, Clock rate =E/32
*
BSR
JMP
UPDATE
#$E000
Update AD7303 output.
Restart.
*
UPDATE
PSHX
PSHY
PSHA
Save relevant registers.
*
LDAA
STAA
#$00
DIN 1
Control Word "0, 0, 0, 0, 0, 0, 0, 0"
Load both DAC A and DAC B DAC registers from shift register
with internal reference selected.
Data Word "1, 0, 1, 0, 1, 0, 1, 0"
LDAA
STAA
#$AA
DIN 2
*
LDX
LDY
#DIN1
#$1000
Stack pointer at first first byte to send via DIN 1.
Stack pointer at on chip registers.
*
BCLR
LDAA
STAA
PORTC,Y $80
0,X
SPDR
Assert SYNC.
Get BYTE to transfer via SPI.
Write to DIN register to start transfer.
TRANSFER
*
WAIT
LDAA
BPL
SPSR
WAIT
Wait for SPIF to be set to indicate that transfer has been completed.
SPIF is the MSB of the SPCR. SPIF is automatically reset if in a set
state when the status register is read.
*
INX
CPX
BNE
Increment counter for transfer of second byte.
16 bits transferred
If not, transfer second BYTE.
#DIN 2+1
TRANSFER
*Execute instruction
BSET
PULA
PULY
PULX
RTS
PORTC,Y $80
Bring SYNC back high.
Restore registers.
Return to main program.
相關(guān)PDF資料
PDF描述
AD7303BRM +2.7 V to +5.5 V, Serial Input, Dual Voltage Output 8-Bit DAC
AD7305YR +3 V/+5 V, Rail-to-Rail Quad, 8-Bit DAC
AD7304 ECONOLINE: REC2.2-S_DR/H1 - 2.2W DIP Package- 1kVDC Isolation- Regulated Output- UL94V-0 Package Material- Continuous Short Circiut Protection- Internal SMD design- 100% Burned In- Efficiency to 75%
AD7304BN ECONOLINE: REC2.2-S_DRW(Z)/H* - 2.2W DIP Package- 1kVDC Isolation- Regulated Output- 4.5-9V, 9-18V, 18-36V, 36-72V Wide Input Range 2 : 1- UL94V-0 Package Material- Continuous Short Circiut Protection- Cost Effective- 100% Burned In- Efficiency to 84%
AD7304BR +3 V/+5 V, Rail-to-Rail Quad, 8-Bit DAC
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