AM186ER-25KCW AMD [Advanced Micro Devices], AM186ER-25KCW Datasheet - Page 100

• Manufacturer Part Number: AM186ER-25KCW
• Description: High-Performance, 80C186- and 80C188-Compatible, 16-Bit Embedded Microcontrollers with RAM
• Manufacturer: AMD [Advanced Micro Devices]

Reset Waveforms
Signals Related to Reset Waveforms
100
RES
S6/CLKSEL1***,
UZI/CLKSEL2***
CLKOUTA
BHE/ADEN*,
RFSH2/ADEN*,
S6/CLKSEL1* **,
UZI/CLKSEL2**
S1/IMDIS*,
and S0/SREN*
AD15–AD0 (186)
AO15–AO8,
AD7–AD0 (188)
Notes:
* Because BHE, RFSH2, S6, UZI, S1, and S0 are not driven for 6.5 clocks after reset, their alternate functions can be
** In Divide by Two mode and Times One mode, S6/CLKSEL1 and UZI/CLKSEL2 must be held for 3 clock cycles after
***In Times Four mode, S6/CLKSEL1 and UZI/CLKSEL2 must be held for 5 clock cycles after reset negates.
X1
RES
CLKOUTA
Note:
RES must be held Low for 1 ms during power-up to ensure proper device initialization. Activating the PLL will require 1 ms
to achieve a stable clock.
asserted with external pulldown resistors.
reset negates.
Divide by Two and Times One Modes
Am186
TM
Times Four Mode
ER and Am188
Three-State
TM
ER Microcontrollers Data Sheet
57
Three-State
57
Three-State