參數資料
型號: AD5662BRJ-1REEL7
廠商: Analog Devices Inc
文件頁數: 9/24頁
文件大?。?/td> 0K
描述: IC DAC 16BIT BUFF V-OUT SOT23-8
產品培訓模塊: Data Converter Fundamentals
DAC Architectures
設計資源: 4 mA to 20 mA Process Control Loop Using AD5662 (CN0009)
16-Bit Fully Isolated Voltage Output Module Using AD5662, ADuM1401, and External Amplifiers (CN0063)
16-Bit Fully Isolated 4 mA to 20 mA Output Module Using AD5662, ADuM1401, and External Amplifiers (CN0064)
標準包裝: 3,000
系列: nanoDAC™
設置時間: 8µs
位數: 16
數據接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
轉換器數目: 1
電壓電源: 單電源
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: SOT-23-8
供應商設備封裝: SOT-23-8
包裝: 帶卷 (TR)
輸出數目和類型: 1 電壓,單極
AD5662
Rev. A | Page 17 of 24
AD5662 to 80C51/80L51 Interface
AD5662 to MICROWIRE Interface
Figure 39 shows a serial interface between the AD5662 and the
80C51/80L51 microcontroller. The setup for the interface is as
follows. TxD of the 80C51/80L51 drives SCLK of the AD5662,
while RxD drives the serial data line of the part. The SYNC
signal is again derived from a bit-programmable pin on the port.
In this case, port line P3.3 is used. When data is to be transmitted
to the AD5662, P3.3 is taken low. The 80C51/80L51 transmits
data in 8-bit bytes only; thus only eight falling clock edges occur
in the transmit cycle. To load data to the DAC, P3.3 is left low
after the first eight bits are transmitted, and a second write cycle
is initiated to transmit the second byte of data. P3.3 is taken
high following the completion of this cycle. The 80C51/80L51
outputs the serial data in a format that has the LSB first. The
AD5662 must receive data with the MSB first. The 80C51/80L51
transmit routine should take this into account.
Figure 40 shows an interface between the AD5662 and any
MICROWIRE-compatible device. Serial data is shifted out on
the falling edge of the serial clock and is clocked into the AD5662
on the rising edge of the SK.
MICROWIRE*
AD5662*
*ADDITIONAL PINS OMITTED FOR CLARITY
CS
SK
SO
SYNC
SCLK
DIN
04777-030
Figure 40. AD5662 to MICROWIRE Interface
80C51/80L51*
AD5662*
*ADDITIONAL PINS OMITTED FOR CLARITY
P3.3
TxD
RxD
SYNC
SCLK
DIN
04777-029
Figure 39. AD5662 to 80C51/80L51 Interface
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