參數(shù)資料
型號: AD664SD-BIP
廠商: ANALOG DEVICES INC
元件分類: DAC
英文描述: Monolithic 12-Bit Quad DAC
中文描述: QUAD, PARALLEL, WORD INPUT LOADING, 10 us SETTLING TIME, 12-BIT DAC, CDIP28
封裝: HERMETIC SEALED, CERAMIC, DIP-28
文件頁數(shù): 18/20頁
文件大小: 566K
代理商: AD664SD-BIP
AD664
REV. C
–18–
Simple AD664 to MC68000 Interface
Figure 28 shows an AD664 connected to an MC68000. In this
memory-mapped I/O scheme, the “l(fā)eft-justified” data is written
in one 12-bit input word. Four address bits are used to perform
the on-chip D/A selection as well as the various operating fea-
tures. The R/
W
signal controls the
RD
function and system
reset controls
RST
.
This scheme can be converted to write “right-justified’’ data by
connecting the data inputs to DATA bits D0 through D11
respectively. Other options include controlling the
QS0
,
QS1
and
QS2
pins with
UDS
and
LDS
to provide a way to write
8-bit input and read 8-bit output words.
Figure 28. AD664 to MC68000 Interface
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