P R E L I M I N A R Y
LOGIC SYMBOL—Am186ED/EDLV MICROCONTROLLERS
RES
X1
DRQ1/INT6
DRQ0/INT5
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/CLKDIV2
UZI
*
*
PCS6/A2
PCS5/A1
*
*
ALE
PCS3/RTS1/RTR1
PCS2/CTS1/ENRX1
S2/BTSEL
*
*
2
S1–S0
HOLD
2
PCS1–PCS0
*
Memory and
Peripheral Control
HLDA
RD
LCS/ONCE0/RAS0
MCS3/RAS1
*
WR
MCS2/LCAS
*
*
*
Bus Control
DT/R
MCS1/UCAS
MCS0
*
*
DEN/DS
ARDY
SRDY
BHE/ADEN
WHB
UCS/ONCE1
*
DRQ1/INT6
DRQ0/INT5
*
*
DMA Control
WLB
TXD0
RXD0
*
*
TMRIN0
*
*
TMROUT0
TMRIN1
Timer Control
CTS0/ENRX0
*
*
*
*
*
*
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 21 and
Table 2 on page 29 for information on shared function.
** All PIO signals are shared with other physical pins.
20
Am186ED/EDLV Microcontrollers
AMD [ AMD ]
