
CHAPTER 5 BUS CONTROL FUNCTION
User’s Manual U15905EJ2V1UD
197
Figure 5-6. Multiplexed Bus Write Timing (Bus Size: 16 Bits, 16-Bit Access)
A1
11
00
11
00
11
A2
A3
D1
D2
A3
A2
A1
T2
T3
T1
T2
TW
T3
T1
Programmable
wait
External
wait
CLKOUT
A23 to A16
ASTB
CS3 to CS0
WAIT
AD15 to AD0
WR1, WR0
01
10
8-bit access
AD15 to AD8
AD7 to AD0
Odd address
Active
Undefined
Even address
Undefined
Active
Figure 5-7. Multiplexed Bus Write Timing (Bus Size: 8 Bits)
A1
11
10
11
10
11
A2
A3
D1
D2
A3
A2
A1
T2
T3
T1
T2
TW
T3
T1
Programmable
wait
External
wait
CLKOUT
A23 to A16,
AD15 to AD8
ASTB
CS3 to CS0
WAIT
AD7 to AD0
WR1, WR0