S3C4510B Datasheet, PDF (169/422 Pages) Samsung semiconductor – Samsungs S3C4510B 16/32-bit RISC microcontroller is a cost-effective, high-performance microcontroller solution for Ethernet-based systems.

S3C4510B
SYSTEM MANAGER
SCLK
MCLKO
nECS
nOE
Address
Data
tNECS
tNROE
tADDRh
tACC
tNECS
tNROE
Addr
Data
nEWAIT
Data
Fetch
tACS = 0 (0 cycle)
tCOS = 0 (0 cycle)
tACC = 4 (5 cycles)
tCOH = 0 (0 cycle)
Figure 4-11. External I/O Read Timing 1
When nEWAIT is asserted for external I/O banks, the tCOS and tCOH should not be zero. When ROM banks,
except ROM bank 5, are selected, the nEWAIT can not be asserted.
Even if you does not use nEWAIT, nEWAIT pin should be connected pull-up for safe operation.
4-27