参数资料
型号: MSC1210Y3PAGTG4
厂商: TEXAS INSTRUMENTS INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQFP64
封装: GREEN, PLASTIC, TQFP-64
文件页数: 16/94页
文件大小: 913K
代理商: MSC1210Y3PAGTG4
MSC1210
SBAS203J MARCH 2002 REVISED JANUARY 2008
www.ti.com
23
OVERVIEW
The MSC1210 ADC structure is shown in Figure 12. The
figure lists the components that make up the ADC, along
with the corresponding special function register (SFR)
associated with each component.
ADC INPUT MULTIPLEXER
The input multiplexer provides for any combination of
differential inputs to be selected as the input channel, as
shown in Figure 13. If AIN0 is selected as the positive
differential input channel, any other channel can be selected
as the negative differential input channel. With this method,
it is possible to have up to eight fully differential input
channels. It is also possible to switch the polarity of the
differential input pair to negate any offset voltages.
In addition, current sources are supplied that will source or
sink current to detect open or short circuits on the pins.
TEMPERATURE SENSOR
On-chip diodes provide temperature sensing capability.
When the configuration register for the input MUX is set to
all 1s, the diodes are connected to the input of the ADC.
All other channels are open.
Σ
X
Input
Multiplexer
Temperature
Sensor
Buffer
PGA
Sample
and Hold
ADMUX
D7h
REFIN+
REFIN
REFIN+
f
MOD
REFIN
AIN5
AIN6
AIN7
AINCOM
ADCON1
DDh
ADCON2
DEh
ADCON3
DFh
OCR
GCR
ADRES
SUMR
D3h D2h D1h
D6h D5h D4h
DBh DAh D9h
E5h E4h E3h E2h
Offset
Calibration
Register
ADC0N0
DCh
ACLK
F6h
SSCON
E1h
ODAC
E6h
Offset
DAC
Σ ADC
Modulator
FAST
SINC2
SINC3
AUTO
ADC
Result Register
Σ
Summation
Block
V
IN
AIN2
AIN3
AIN4
AIN0
AIN1
f
SAMP
f
DATA
Gain
Calibration
Register
Burnout
Detect
AV
DD
In+
AGND
In
Burnout
Detect
AISTAT.5
A7h
AIE.5
A6h
AISTAT.6
A7h
AIE.6
A6h
Figure 12. MSC1210 ADC Structure
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