P R E L I M I N A R Y
LOGIC SYMBOL—Am186ES MICROCONTROLLER
RES
DRQ1/INT6
DRQ0/INT5
X1
X2
Clocks
CLKOUTA
CLKOUTB
INT4
*
*
INT3/INTA1/IRQ
INT2/INTA0/PWD
INT1/SELECT
INT0
Reset Control and
Interrupt Service
*
20
16
A19–A0
Address and
Address/Data Buses
AD15–AD0
NMI
*
*
S6/LOCK/CLKDIV2
UZI
PCS6/A2
PCS5/A1
*
*
ALE
3
PCS3/RTS1/RTR1
PCS2/CTS1/ENRX1
*
*
S2–S0
HOLD
HLDA
RD
2
3
PCS1–PCS0
Memory and
Peripheral Control
*
LCS/ONCE0
MCS3/RFSH
MCS2–MCS0
UCS/ONCE1
*
*
WR
Bus Control
*
*
DT/R
DEN/DS
ARDY
SRDY
BHE/ADEN
WHB
*
DRQ1/INT6
DRQ0/INT5
*
*
DMA Control
WLB
TXD0
RXD0
*
*
*
*
TMRIN0
TMROUT0
TMRIN1
CTS0/ENRX0
*
*
*
*
Timer Control
*
*
RTS0/RTR0
TXD1
Asynchronous
Serial Port Control
TMROUT1
RXD1
32
shared
PCS2/CTS1/ENRX1
PCS3/RTS1/RTR1
*
*
Programmable
I/O Control
**
PIO32–PIO0
Notes:
* These signals are the normal function of a pin that can be used as a PIO. See Pin Descriptions beginning on page 27 and
Table 2 on page 34 for information on shared function.
** All PIO signals are shared with other physical pins.
Am186/188ES and Am186/188ESLV Microcontrollers
25
AMD [ AMD ]
