AM186ER-25KCW AMD [Advanced Micro Devices], AM186ER-25KCW Datasheet - Page 28

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

LOGIC SYMBOL—Am186™ER MICROCONTROLLER
Notes:
* These signals are the normal function of a pin that can be used as a PIO. See the pin descriptions beginning on page 30 and
Table 3 on page 36 for information on shared function.
** All PIO signals are shared with other physical pins.
28
Address/Data Buses
Programmable
Timer Control
Address and
Bus Control
I/O Control
Clocks
**
Am186
*
*
*
*
*
*
*
*
*
*
shared
20
16
32
TM
X1
X2
CLKOUTA
CLKOUTB
A19–A0
AD15–AD0
S6/CLKSEL1
UZI/CLKSEL2
ALE
S2
S1/IMDIS
S0/SREN
HOLD
HLDA
RD
WR
DT/R
DEN
ARDY
SRDY
BHE/ADEN
WHB
WLB
TMRIN0
TMROUT0
TMRIN1
TMROUT1
PIO32–PIO0
ER and Am188
TM
ER Microcontrollers Data Sheet
INT3/INTA1/IRQ
SDEN1–SDEN0
INT1/SELECT
MCS2–MCS0
DRQ1–DRQ0
UCS/ONCE1
PCS3–PCS0
MCS3/RFSH
LCS/ONCE0
INT2/INTA0
PCS6/A2
PCS5/A1
SDATA
SCLK
INT4
INT0
RES
RXD
TXD
NMI
3
2
4
2
*
*
*
*
*
*
*
*
*
*
*
*
*
Reset Control and
Interrupt Service
Memory and
Peripheral Control
DMA Control
Asynchronous
Serial Port Control
Synchronous
Serial Port Control