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MCP4728EV bảng dữ liệu(PDF) 48 Page - Microchip Technology

tên linh kiện MCP4728EV
Giải thích chi tiết về linh kiện  Evaluation Board User’s Guide
PDF  50 Pages
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Trang chủ  http://www.microchip.com
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MCP4728EV bảng dữ liệu(HTML) 48 Page - Microchip Technology

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MCP4728 Evaluation Board User’s Guide
DS51837A-page 44
© 2009 Microchip Technology Inc.
Write V
REF, Gain, and Power-Down Select Bits (Note 4)
1
0
0
Not Used
Write Reference
(VREF) selection
bits to Input Regis-
ters
This command writes reference (VREF) selection bits of each
channel.
1
1
0
Not Used
Write Gain selec-
tion bit to Input
Registers
This command writes Gain selection bits of each channel.
1
0
1
Not Used
Write Power-Down
bits to Input Regis-
ters
This command writes Power-Down bits of each channel.
TABLE C-1:
WRITE COMMAND TYPES (CONTINUED)
Command Field
Write
Function
Command Name
Function
C2
C1
C0
W1
W0
Note 1:
The analog output is updated when LDAC pin is (or changes to) “Low”. UDAC bit is not used for this
command.
2:
The DAC output is updated when LDAC pin or UDAC bit is “Low”.
3:
The device starts writing to the EEPROM on the acknowledge clock pulse of the last channel. The device
does not execute any command until RDY/BSY bit comes back to “High”.
4:
The input and output registers are updated at the acknowledge clock pulse of the last byte. The update
does not require LDAC pin or UDAC bit conditions. EEPROM is not affected.



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