AMD Am186TMER, Am188TMER System Overview 3-20, Figure 3-3 Am188ER Microcontroller Address BusNormal Read and Write Operation, Figure 3-4 Am188ER MicrocontrollerRead and Write with Address Bus Disable In Effect

System Overview
3-20
Figure 3-3 Am188ER Microcontroller Address Bus—Normal Read and Write Operation
Figure 3-4 Am188ER Microcontroller—Read and Write with Address Bus Disable In Effect
CLKOUTA
t1t2t3t4
AD7–AD0
(Read) Data
AO15–AO8
(Read or Write)
AD7–AD0
(Write)
Address
Address
DataAddress
Address
Phase Data Phase
A19–A0 Address
LCS or UCS
MCSx, PCSx
CLKOUTA
t1t2t3t4
AD7–AD0
(Read) Data
Address
AO15–AO8
LCS, UCS
AD7–AD0
(Write) Data
Address
Phase Data Phase
A19–A0 Address