AM186 Datasheet, PDF (28/112 Pages) Advanced Micro Devices – High-Performance, 80C186- and 80C188-Compatible, 16-Bit Embedded Microcontrollers with RAM

LOGIC SYMBOL—Am186™ER MICROCONTROLLER
Clocks
X1
X2
CLKOUTA
CLKOUTB
Address and
Address/Data Buses
* ²⁰
16
A19–A0
AD15–AD0
*
S6/CLKSEL1
*
UZI/CLKSEL2
Bus Control
*
*
*
D^*
Timer Control ^*
*
*
ALE
S2
S1/IMDIS
S0/SREN
HOLD
HLDA
RD
WR
DT/R
DEN
R^ARDY
SRDY
BHE/ADEN
WHB
WLB
TMRIN0
TMROUT0
TMRIN1
TMROUT1
Programmable
I/O Control
32
shared
**
PIO32–PIO0
RES
INT4
INT3/INTA1/IRQ
INT2/INTA0
INT1/SELECT
INT0
NMI
*
Reset Control and
* Interrupt Service
PCS6/A2
*
PCS5/A1
*
PCS3–PCS0 ⁴ _*
LCS/ONCE0
Memory and
Peripheral Control
MCS3/RFSH
*
3
T ^{MCS2–MCS0}
*
A ^FUCS/ONCE1
2
DRQ1–DRQ0
* ^{DMA Control}
TXD
RXD
* Asynchronous
Serial Port Control
*
2
SDEN1–SDEN0
*
Synchronous
SCLK
* ^{Serial Port Control}
SDATA
*
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.
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Am186^TMER and Am188^TMER Microcontrollers Data Sheet