CHAPTER 5 MEMORY ACCESS CONTROL FUNCTION
148
User’s Manual U14359EJ4V0UM
Figure 5-2. SRAM, External ROM, External I/O Access Timing (5/6)
(e) For read
→
→
→
→
write operation
T1
T2
Address
Address
Data
Data
WAIT (input)
D0 to D15 (I/O)
IOWR (output)
Note
LWR/LCAS (output)
IORD (output)
Note
UWR/UCAS (output)
WE (output)
OE (output)
RD (output)
BCYST (output)
A0 to A25 (output)
CLKOUT (output)
T2
T1
CSn/RASm (output)
LBE (output)
UBE (output)
Note
When the IOEN bit of the BCP register is set to 1.
Remarks 1.
The
circle
{
indicates the sampling timing.
2.
The broken lines indicate the high-impedance state.
3.
n = 0 to 7, m = 1, 3, 4, 6