C. Electrical Characteristics - Samsung S3C2416 User Manual

S3C2416X RISC MICROPROCESSOR ELECTRICAL DATA
4 A.C. ELECTRICAL CHARACTERISTICS
t
XTALCYC
1/2 VDD_OP1
1/2 VDD_OP1
The clock input from the X pin.
NOTE:
TIpll
Figure 26-1. XTIpll Clock Timing
t
EXTCYC
t t
EXTHIGH EXTLOW
V
IH
V
IH
1/2 VDD_OP1
1/2 VDD_OP1
V
V
IL
IL
NOTE: The clock input from the EXTCLK pin.
Figure 26-2. EXTCLK Clock Input Timing
EXTCLK
t
EX2HC
HCLK
(internal)
Figure 26-3. EXTCLK/HCLK in case that EXTCLK is used without the PLL
26-7