AM186EM Datasheet, PDF (80/98 Pages) List of Unclassifed Manufacturers – MICROCONTROLLER BLOCK DIAGRAM

PRELIMINARY
Interrupt Acknowledge Cycle Waveforms
CLKOUTA
A19–A0
S6
AD15–AD0*,
AD7–AD0**
t₁
68
S6
12
15
t₂
t₃
t_W
Address
7
S6
1
Ptr
AO15–AO8**
ALE
BHE*
Address
23
9
10
11
BHE
INTA1–INTA0
DEN
DT/R
S2–S0
20
22
19 ^(c)
3
Status
22
4 ^(a)
t₄
8
2 ^(b)
31
21
22 ^(d)
Notes:
* _{Am186EM microcontroller only}
** _{Am188EM microcontroller only}
a The status bits become inactive in the state preceding t₄.
b The data hold time lasts only until the interrupt acknowledge signal deasserts, even if the interrupt acknowledge
transition occurs prior to t_CLDX (min).
c This parameter applies for an interrupt acknowledge cycle that follows a write cycle.
d If followed by a write cycle, this change occurs in the state preceding that write cycle.
80
Am186/188EM and Am186/188EMLV Microcontrollers