Samsung S3C2440A - Manual (Page 189)

NAND FLASH CONTROLLER S3C2440A RISC MICROPROCESSOR
6-4
NAND FLASH MEMORY TIMING
HCLK
CLE / ALE
nWE
TACLS TWRPH0 TWRPH1
DATA COMMAND / ADDRESS
Figure 6-3. CLE & ALE Timing (TACLS=1, TWRPH0=0, TWRPH1=0)
HCLK
nWE / nRE
DATA DATA
TWRPH0 TWRPH1
Figure 6-4 nWE & nRE Timing (TWRPH0=0, TWRPH1=0)