AM186ED Datasheet, PDF (69/88 Pages) Advanced Micro Devices – High Performance, 80C186- and 80C188-Compatible, 16-Bit Embedded Microcontrollers

WRITE CYCLE WAVEFORMS
PRELIMINARY
t₁
t₂
t₃
t₄
t_W
CLKOUTA
65
A19–A0
Address
68
8
S6
S6
INVALID
S6
AD15–AD0^(a),
AD7–AD0^(b)
14
7
Address
6
Data
AD15–AD8^(b)
Address
ALE
23
9
10
WR
WHB, WLB
BHE
67
LCS, UCS
MCS3–MCS0,
D^{PCS6–PCS5,}
PCS3–PCS0
DEN
DS
12
20
87
5
R¹⁶
11
13
20
31
32
31
F_BHE
A⁹⁹
20
20
21
30
T34
33
41
18
17
35
31
98
19
DT/R
S2–S0
UZI
(c)
22
3
Status
(c)
22
4
Notes:
a Am186ED/EDLV microcontrollers in 16-bit mode
b Am186ED/EDLV microcontrollers in 8-bit mode
c Changes in t phase preceding next bus cycle if followed by read, INTA, or halt
Am186ED/EDLV Microcontrollers
69