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參數(shù)資料
| 型號： | MAX550B |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Power +2.5V to +5.5V 8-Bit Voltage-Output DAC in uMAX |
| 中文描述： | 低功耗2.5V至5.5V的8位電壓輸出數(shù)模轉(zhuǎn)換器的力捷 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大小： | 172K |
| 代理商： | MAX550B |
M
+2.5V to +5.5V, Low-Power, S ingle/Dual,
8-Bit Voltage-Output DACs in μMAX Pac kage
______________________________________________________________________________________
11
Table 3. MAX549A Serial-Interface Programming Commands
DATA BYTE
Loaded Last
D7........D0
UNASSIGNED COMMAND
X
X
COMMANDS LOADING INPUT REGISTER(S) ONLY
X
X
X
X
X
X
0
0
X
X
1
0
0
X
X
X
0
0
1
0
1
0
XXXXXXXX
8-Bit DAC Data
8-Bit DAC Data
Loaded First
C2
UB3
Update both DAC registers with current contents of their
input registers. Both input registers unchanged.
Load DAC A input register. DAC registers unchanged.
Load DAC B input register. DAC registers unchanged.
Load both DAC input registers. DAC registers
unchanged.
X
X
X
0
X
1
X
0
1
X
0
X
1
X
1
0
8-Bit DAC Data
Load DAC A input register and update both DAC
registers. DAC B input register unchanged.
X
1
X
0
X
X
0
1
X
1
X
0
X
1
0
8-Bit DAC Data
Load DAC A input register and power down DAC A.
DAC B input register and both DAC registers unchanged.
X
8-Bit DAC Data
Load DAC B input register and power down DAC B.
DAC A input register and both DAC registers unchanged.
X
X
1
X
0
X
1
1
8-Bit DAC Data
Load both DAC input registers and power down both
DACs. Both DAC registers unchanged.
X
X
0
X
0
X
1
1
8-Bit DAC Data
X
8-Bit DAC Data
Load DAC B input register and update both DAC
registers. DAC A input register unchanged.
X
X
0
X
1
X
1
1
8-Bit DAC Data
Load both DAC input registers and update both DAC
registers.
X
COMMAND
(Commands executed on
CS
’s rising edge)
CONTROL BYTE
UB2
C1
C0
A1
A0
UB1
X
X
0
X
0
0
XXXXXXXX
Unassigned command
COMMANDS UPDATING DAC REGISTER(S)
COMMANDS POWERING DOWN AND LOADING INPUT REGISTER(S) ONLY
X = Don’t care
COMMANDS POWERING DOWN AND UPDATING DAC REGISTER(S)
X
1
X
1
X
0
1
8-Bit DAC Data
Load DAC A input register, power down DAC A, and
update both DAC registers. DAC B input register
unchanged.
X
X
1
X
1
X
1
0
8-Bit DAC Data
Load DAC B input register, power down DAC B, and
update both DAC registers. DAC A input register
unchanged.
X
X
1
X
1
X
1
1
8-Bit DAC Data
Load both DAC input registers, power down both DACs,
and update both DAC registers.
X
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