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MCP3464 bảng dữ liệu(PDF) 81 Page - Microchip Technology

tên linh kiện MCP3464
Giải thích chi tiết về linh kiện  Two/Four/Eight-Channel, 153.6 ksps, Low Noise, 16-Bit Delta-Sigma ADC
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DS20006180D-page 81
MCP3461/2/4
8.0
INTERNAL REGISTERS
The device has a total of 16 internal registers, which are
made of volatile memory. Table 8-1 shows the summary
of the registers. These registers are accessible
sequentially.
TABLE 8-1:
INTERNAL REGISTERS SUMMARY
Address Register Name
No. of Bits
R/W
Description
0x0
ADCDATA
4/16/32
R
Latest A/D conversion data output value (16 or 32 bits
depending on DATA_FORMAT[1:0]) or modulator output
stream (4-bit wide) in MDAT Output mode.
0x1
CONFIG0
8
R/W
ADC Operating mode, Master Clock mode and Input Bias
Current Source mode.
0x2
CONFIG1
8
R/W
Prescale and OSR settings.
0x3
CONFIG2
8
R/W
ADC boost and gain settings, auto-zeroing settings for
analog multiplexer, voltage reference and ADC.
0x4
CONFIG3
8
R/W
Conversion mode, data and CRC format settings, enable for
CRC on communications, enable for digital offset and gain
error calibrations.
0x5
IRQ
8
R/W
IRQ Status bits and IRQ mode settings, enable for Fast
commands and for conversion start pulse.
0x6
MUX
8
R/W
Analog multiplexer input selection (MUX mode only).
0x7
SCAN
24
R/W
SCAN mode settings.
0x8
TIMER
24
R/W
Delay value for TIMER between each SCAN cycle.
0x9
OFFSETCAL
24
R/W
ADC digital offset calibration value.
0xA
GAINCAL
24
R/W
ADC digital gain calibration value.
0xB
RESERVED
24
R/W
0xC
RESERVED
8
R/W
0xD
LOCK
8
R/W
Password value for SPI Write mode locking.
0xE
RESERVED
16
R/W
0xF
CRCCFG
16
R
CRC checksum for the device configuration.



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