Samsung YP-P10 User Manual Page 440

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S3C2440A RISC MICROPROCESSOR ADC AND TOUCH SCREEN INTERFACE
16-1
16 ADC & TOUCH SCREEN INTERFACE
OVERVIEW
The 10-bit CMOS ADC (Analog to Digital Converter) is a recycling type device with 8-channel analog inputs. It
converts the analog input signal into 10-bit binary digital codes at a maximum conversion rate of 500KSPS with
2.5MHz A/D converter clock. A/D converter operates with on-chip sample-and-hold function and power down mode is
supported.
Touch Screen Interface can control/select pads (XP, XM, YP, YM) of the Touch Screen for X, Y position conversion.
Touch Screen Interface contains Touch Screen Pads control logic and ADC interface logic with an interrupt
generation logic.
FEATURES
Resolution: 10-bit
Differential Linearity Error: ± 1.0 LSB
Integral Linearity Error: ± 2.0 LSB
Maximum Conversion Rate: 500 KSPS
Low Power Consumption
Power Supply Voltage: 3.3V
Analog Input Range: 0 ~ 3.3V
On-chip sample-and-hold function
Normal Conversion Mode
Separate X/Y position conversion Mode
Auto(Sequential) X/Y Position Conversion Mode
Waiting for Interrupt Mode
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