參數資料
型號： MCP3424EV
廠商： Microchip Technology
文件頁數： 10/58頁
文件大小： 0K
描述： EVALUATION BOARD FOR MCP3424
產品培訓模塊： MCP3901 Analog Front End
標準包裝： 1
ADC 的數量： 1
位數： 18
采樣率（每秒）： 3.75 ~ 240
數據接口： I²C
輸入范圍： ±2.048 V
在以下條件下的電源（標準）： 135µA @ 240sps
工作溫度： -55°C ~ 125°C
已用 IC / 零件： MCP3424
已供物品： 板
產品目錄頁面： 672 (CN2011-ZH PDF)
相關產品： MCP3424T-E/STTR-ND - IC ADC 18BIT 3.75SPS 4CH 14TSSOP
MCP3424T-E/SLTR-ND - IC ADC 18BIT 3.75SPS 4CH 14-SOIC
MCP3424-E/ST-ND - IC ADC 18BIT 3.75SPS 4CH 14TSSOP
MCP3424-E/SL-ND - IC ADC 18BIT 3.75SPS 4CH 14-SOIC
MCP3422/3/4
DS22088C-page 18
2009 Microchip Technology Inc.
5.2
Configuration Register
The device has an 8-bit wide configuration register to
select for: input channel, conversion mode, conversion
rate, and PGA gain. This register allows the user to
change the operating condition of the device and check
the status of the device operation.
The user can rewrite the configuration byte any time
during the device operation. Register 5-1 shows the
configuration register bits.
REGISTER 5-1:
CONFIGURATION REGISTER
R/W-1
R/W-0
R/W-1
R/W-0
RDY
C1
C0
O/C
S1
S0
G1
G0
1 *
0 *
1 *
0 *
bit 7
bit 0
* Default Configuration after Power-On Reset
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7
RDY: Ready Bit
This bit is the data ready flag. In read mode, this bit indicates if the output register has been updated
with a latest conversion result. In One-Shot Conversion mode, writing this bit to “1” initiates a new
conversion.
Reading RDY bit with the read command:
1
= Output register has not been updated
0
= Output register has been updated with the latest conversion result
Writing RDY bit with the write command:
Continuous Conversion mode: No effect
One-Shot Conversion mode:
1
= Initiate a new conversion
0
= No effect
bit 6-5
C1-C0: Channel Selection Bits
00
=
Select Channel 1 (Default)
01
=
Select Channel 2
10
=
Select Channel 3 (MCP3424 only, treated as “00” by the MCP3422/MCP3423)
11
=
Select Channel 4 (MCP3424 only, treated as “01” by the MCP3422/MCP3423)
bit 4
O/C: Conversion Mode Bit
1
= Continuous Conversion Mode (Default). The device performs data conversions continuously
0
= One-Shot Conversion Mode. The device performs a single conversion and enters a low power
standby mode until it receives another write or read command
bit 3-2
S1-S0: Sample Rate Selection Bit
00
=
240 SPS (12 bits) (Default)
01
=
60 SPS (14 bits)
10
=
15 SPS (16 bits)
11
=
3.75 SPS (18 bits)
bit 1-0
G1-G0: PGA Gain Selection Bits
00
=x1 (Default)
01
=x2
10
=x4
11
=x8
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