參數(shù)資料
型號(hào)： MCP4728EV
廠商： Microchip Technology
文件頁(yè)數(shù)： 17/33頁(yè)
文件大?。?/td> 0K
描述： BOARD EVAL 12BIT 4CH DAC MCP4728
視頻文件： MCP4728 Evaluation Board Demo
標(biāo)準(zhǔn)包裝： 1
DAC 的數(shù)量： 4
位數(shù)： 12
數(shù)據(jù)接口： I²C
設(shè)置時(shí)間： 6µs
DAC 型： 電壓
工作溫度： -40°C ~ 125°C
已供物品： 板
已用 IC / 零件： MCP4728
產(chǎn)品目錄頁(yè)面： 673 (CN2011-ZH PDF)
相關(guān)產(chǎn)品： MCP4728T-E/UN-ND - IC DAC 12BIT W/I2C 10-MSOP
MCP4728-E/UN-ND - IC DAC 12BIT W/I2C 10-MSOP
MCP4728
DS22187E-page 24
2010 Microchip Technology Inc.
4.4
DAC Input Registers and
Non-Volatile EEPROM Memory
Each channel has its own volatile DAC input register
and EEPROM. The details of the input registers and
EEPROM are shown in Table 4-1 and Table 4-2,
respectively.
TABLE 4-1:
INPUT REGISTER MAP (VOLATILE)
Configuration Bits
DAC Input Data (12 bits)
Bit
Name
RDY
/BSY
A2 A1 A0
VREF
DAC1 DAC0 PD1
PD0
GX
D11 D10 D9 D8 D7 D6 D5
D4 D3 D2 D1 D0
Bit
Function
I2C
Address Bits
Ref.
Select
(Note 2)
DAC Channel
(Note 2)
Power-Down
Select
(Note 2)
Gain
Select
(Note 2)
CH. A
CH. B
CH. C
CH. D
Note 1:
EEPROM write status indication bit (flag).
2:
Loaded from EEPROM during power-up, or can be updated by the user.
TABLE 4-2:
EEPROM MEMORY MAP AND FACTORY DEFAULT SETTINGS
Configuration Bits
DAC Input Data (12 bits)
Bit Name
A2
A1
A0
VREF
PD1
PD0
GX
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Bit
Function
I2C Address Bits
Ref.
Select
Power-Down
Select
Gain
Select
CH. A
0
1
0
000
0
00
CH. B
1
0
000
0
00
CH. C
1
0
000
0
00
CH. D
1
0
000
0
00
Note 1:
Device I2C address bits. The user can also specify these bits during the device ordering process. The
factory default setting is “000”. These bits can be reprogrammed by the user using the I2C Address Write
command.
2:
Voltage Reference Select:
0 = External V
REF (VDD), 1 = Internal VREF (2.048V).
3:
Gain Select:
0 = Gain of 1, 1 = Gain of 2.
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