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參數(shù)資料
| 型號： | AD5381BST-5-REEL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | 40-Channel, 3 V/5 V, Single-Supply, 12-Bit, Voltage Output DAC |
| 中文描述： | PARALLEL, WORD INPUT LOADING, 6 us SETTLING TIME, 12-BIT DAC, PQFP100 |
| 封裝： | 14 X 14 MM, MS-026-BED, LQFP-100 |
| 文件頁數(shù)： | 31/36頁 |
| 文件大?。?/td> | 1200K |
| 代理商： | AD5381BST-5-REEL |
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AD5381
MICROPROCESSOR INTERFACING
Parallel Interface
The AD5381 can be interfaced to a variety of 16-bit microcon-
trollers or DSP processors. Figure 35 shows the AD5381 family
interfaced to a generic 16-bit microcontroller/DSP processor.
The lower address lines from the processor are connected to
A0–A5 on the AD5381. The upper address lines are decoded to
provide a CS, LDAC
s
ignal for the AD5381. The fast interface
timing of the AD5381 allows direct interface to a wide variety of
microcontrollers and DSPs, as shown in Figure 35.
AD5381 to MC68HC11
The serial peripheral interface (SPI) on the MC68HC11 is
configured for Master mode (MSTR = 1), Clock Polarity bit
(CPOL) = 0, and the Clock Phase bit (CPHA) = 1. The SPI is
configured by writing to the SPI control register (SPCR)—see
the 68HC11 User Manual. SCK of the 68HC11 drives the SCLK
of the AD5381, the MOSI output drives the serial data line (D
IN
)
of the AD5381, and the MISO input is driven from D
OUT
. The
SYNC signal is derived from a port line (PC7). When data is
Rev. A | Page 31 of 36
being transmitted to the AD5381, the SYNC line is taken low
(PC7). Data appearing on the MOSI output is valid on the
falling edge of SCK. Serial data from the 68HC11 is transmitted
in 8-bit bytes with only eight falling clock edges occurring in
the transmit cycle.
0
MC68HC11
AD5381
MISO
MOSI
SCK
PC7
SDO
DIN
SCLK
SYNC
SPI/I2C
RESET
SER/PAR
DV
DD
Figure 34. AD5381-to-MC68HC11 Interface
0
μ
CONTROLLER/
DSP PROCESSOR*
AD5381
ADDRESS
DECODE
UPPER BITS OF
ADDRESS BUS
DATA
BUS
A5
A4
A3
A2
A1
A0
D15
D0
R/W
A5
A4
A3
A2
A1
A0
WR
REG1
REG0
D11
D0
CS
LDAC
*ADDITIONAL PINS OMITTED FOR CLARITY
Figure 35. AD5381-to-Parallel Interface
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| AD5382BST-3-REEL | CONNECTOR ACCESSORY |
| AD5382 | 32-Channel, 3 V/5 V, Single-Supply, 14-Bit, Voltage Output DAC |
| AD5382BST-3 | 32-Channel, 3 V/5 V, Single-Supply, 14-Bit, Voltage Output DAC |
| AD5382BST-5 | 32-Channel, 3 V/5 V, Single-Supply, 14-Bit, Voltage Output DAC |
| AD5382BST-5-REEL | 32-Channel, 3 V/5 V, Single-Supply, 14-Bit, Voltage Output DAC |
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