CP3BT23_14 Datasheet, PDF (108/324 Pages) Texas Instruments – CP3BT23 Reprogrammable Connectivity Processor with Bluetooth and Dual CAN Interfaces

CP3BT23
SNOSCX3A – JULY 2013 – REVISED JANUARY 2014
16 12-Bit Analog to Digital Converter
The integrated 12-bit ADC provides the following features:
• 8-input analog multiplexer
• 8 single-ended channels or 4 differential channels
• External filtering capability
• 12-bit resolution with 11-bit accuracy
• Sign bit
• 15-microsecond conversion time
• Support for resistive touchscreen interface
• Internal or external start trigger
• Programmable start delay after start trigger
• Poll or interrupt on done
MUXOUT0 MUXOUT1ADCIN
VREFP AVCC ADC0 ADC1 AGND ADC2 ADC3
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ADC0/TSX+
ADC1/TSY-
ADC2/TSX-
ADC3/TSY+
ADC4
Pen-Down Detector
DRV
DRV
DRV
DRV
Input
Multi-
+
plexer ^-
ADC7
TOUCH_CFG
MUX_CFG
ADC_DIV
PREF_CFG
NREF_CFG
Int/Ext
Multi-
plexer
ADCIN
VREFP
+
12-BIT ADC
-
Clock
Control
VREFN
Result
12
Pen Down
Wake-Up
(WUI30)
ADC Clock
Start
ADC
SEQUENCER
Done
Interrupt
(IRQ13)
ASYNC
TRIGGER
DELAY1
CLKDIV
DELAY2
4-Word
FIFO
ADC_CONTROL
ADC_DELAY1
CLKSEL
ADC_DELAY2
ADCRESLT
System Auxiliary
Clock Clock 2
Figure 16-1. Analog to Digital Converter Block Diagram
System
Bus
Interface
DS183
108 12-Bit Analog to Digital Converter
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