AMD Am186TMER, Am188TMER System Overview 3-19, Figure 3-1 Am186ER Microcontroller Address BusNormal Read and Write Operation, Figure 3-2 Am186ER MicrocontrollerRead and Write with Address Bus Disable In Effect

System Overview 3-19
Figure 3-1 Am186ER Microcontroller Address Bus—Normal Read and Write Operation
Figure 3-2 Am186ER Microcontroller—Read and Write with Address Bus Disable In Effect
CLKOUTA
t1t2t3t4
AD15–AD0
(Read) Data
AD15–AD0
(Write)
LCS or UCS
Address
DataAddress
Address
Phase Data Phase
A19–A0 Address
MCSx, PCSx
CLKOUTA
t1t2t3t4
AD15–AD0
(Write) Data
LCS, UCS
AD15–AD8
(Read)
AD7–AD0
(Read)
Address
Phase
Data
Data
Phase
Data
A19–A0 Address