External Memory Controller (EMC) 60 May 03, 2004
Philips Semiconductors Preliminary User Manual
LPC2119/2129/2194/2292/2294ARM-based Microcontroller
Figure 8: 16 Bit Bank External Memory Interfaces
Figure 9: 8 Bit Bank External Memory Interface
OE
CS
BLS[1]
D[15:8]
CE
OE
WE
IO[7:0]
A[a_m:0]
BLS[0]
D[7:0]
CE
OE
WE
IO[7:0]
A[a_m:0]
A[a_b:1]
OE
CS
WE
CE
OE
WE
UB
LB
IO[15:0]
A[a_m:0]
D[15:0]
BLS[0]
A[a_b:1]
BLS[1]
a) 16 bit wide memory bank interfaced
to 8 bit memory chips
a) 16 bit wide memory bank interfaced
to 16 bit memory chips
OE
CS
BLS[0]
D[7:0]
CE
OE
WE
IO[7:0]
A[a_m:0]
A[a_b:0]