AT91SAM9G45PRE Datasheet, PDF (957/1218 Pages) ATMEL Corporation – DDR2 Controller 4-bank DDR2/LPDDR, SDRAM/LPSDR

• PENDET: Pen Detect Selection
0: Disable the Touch screen pins as analog inputs
1: enable the Touch screen pins as analog inputs
• PRES: Pressure Measurement Selection
0: Disable the pressure measurement function
1: enable the pressure measurement function
• STARTUP: Start Up Time
Startup Time = (STARTUP+1) * 8/ADCCLK
• SHTIM: Sample & Hold Time for ADC Channels
Programming 0 for SHTIM gives a Sample & Hold Time equal to 1/ADCCLK.
Sample & Hold Time = SHTIM/ADCCLK
• PENDBC: Pen Detect debouncing period
Period = 2^PENDBC/ADCCLK
AT91SAM9G45
6438F–ATARM–21-Jun-10
957