AM186 Datasheet, PDF (86/112 Pages) Advanced Micro Devices – High-Performance, 80C186- and 80C188-Compatible, 16-Bit Embedded Microcontrollers with RAM

PSRAM Refresh Cycle Waveforms
t₁
t₂
CLKOUTA
t₃
t₄
t₁
t_W *
A19–A0
Address
9
11
ALE
RD
27
10
28
26
80
LCS
RFSH
25
79
82
85
86
Note:
D ^{R A * The period tw is fixed at three wait states for PSRAM auto refresh only.}
27
F
T⁸¹
86
Am186^TMER and Am188^TMER Microcontrollers Data Sheet