s3c2410a Samsung Semiconductor, Inc., s3c2410a Datasheet - Page 414

• Manufacturer Part Number: s3c2410a
• Description: 16/32-bit Risc Arm Microprocessor
• Manufacturer: Samsung Semiconductor, Inc.

ADC AND TOUCH SCREEN INTERFACE
Programming Notes
1. The A/D converted data can be accessed by means of interrupt or polling method. With interrupt method,
2. A/D conversion can be activated in different way: After ADCCON[1] - A/D conversion start-by-read
16-6
the overall conversion time - from A/D converter start to converted data read - may be delayed because of
the return time of interrupt service routine and data access time. With polling method, by checking the
ADCCON[15] - end of conversion flag-bit, the read time from ADCDAT register can be determined.
mode-is set to 1, A/D conversion starts simultaneously whenever converted data is read.
Figure 16-3 Timing Diagram in Auto (Sequential) X/Y Position Conversion Mode
YP
XP
A = D x (1/X-Tal Clock) or A = D x (1/External Clock)
B = D x (1/PCLK)
C = D x (1/PCLK)
D = DELAY value of ADCDLY Register
Stylus Down
X-Conversion
A
B
Y-Conversion
C
Stylus Up
S3C2410A