Samsung S3C2451X User Manual page 338

Real Time Clock
14.3.6 32.768 KHz X-TAL Connection EXAMPLE
The Figure 14-3 shows a circuit of the RTC unit oscillation at 32.768 Khz.
15~22pF
32768Hz
15~22pF
14.4 External Interface
Name Direction
XTI Input
XTO Input
14-6
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
5Mohm
A) RTC Block is used
Figure 14-3. Main Oscillator Circuit Example
Description
32 KHz RTC Oscillator Clock Input
32 KHz RTC Oscillator Clock output
VDD_RTC
XTIRTC
XTORTC
B) RTC Block is not used
S3C2451
RISC MICROPROCESSOR
XTIRTC
XTORTC