Samsung S3C2440A - Manual (Page 528)

ELECTRICAL DATA S3C2440A RISC MICROPROCESSOR
27-10
HCLK
(internal)
SCLK
CLKOUT
(HCLK)
t HC2CK
t HC2SCLK
Figure 27-5 HCLK/CLKOUT/SCLK in case when EXTCLK is used
EXTCLK
t RESW
nRESET
Figure 27-6 Manual Reset Input Timing Diagram