CHAPTER 4 BUS CONTROL FUNCTION
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User’s Manual U14359EJ4V0UM
(2) SRAM (when written, three idle states inserted)
T1
T2
Undefined
IOWR (output)
Note 3
IORD (output)
LWR/LCAS (output)
UWR/UCAS (output)
WE (output)
OE (output)
RD (output)
CSn/RASm (output)
BCYST (output)
HLDRQ (input)
HLDAK (output)
A0 to A25 (output)
CLKOUT (input)
TH
TH
TI
Note 1
TI
Note 1
TI
Note 1
TI
Note 2
TI
Note 2
LBE (output)
WAIT (input)
D0 to D15 (I/O)
UBE (output)
Address
Data
Notes 1.
This idle state (TI) is inserted by means of a BCC register setting.
2.
This idle state (TI) is independent of the BCC register setting.
3.
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