AM186EM-20KC/W AMD [Advanced Micro Devices], AM186EM-20KC/W Datasheet - Page 24

• Manufacturer Part Number: AM186EM-20KC/W
• Description: High Performance, 80C186-/80C188-Compatible and 80L186-/80L188-Compatible, 16-Bit Embedded Microcontrollers
• Manufacturer: AMD [Advanced Micro Devices]

LOGIC SYMBOL—Am188EM 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 25 and
Table 2 on page 30 for information on shared function.
** All PIO signals are shared with other physical pins.
24
Address/Data Buses
Programmable
Timer Control
Address and
Bus Control
I/O Control
Clocks
**
*
*
*
*
*
*
*
*
*
*
shared
Am186/188EM and Am186/188EMLV Microcontrollers
32
20
3
8
8
X1
X2
CLKOUTA
CLKOUTB
A19–A0
AO15–AO8
AD7–AD0
S6/CLKDIV2
UZI
ALE
S2–S0
HOLD
HLDA
RD
WR
DT/R
DEN
ARDY
SRDY
RFSH2/ADEN
WB
TMRIN0
TMROUT0
TMRIN1
TMROUT1
PIO31–PIO0
P R E L I M I N A R Y
INT3/INTA1/IRQ
SDEN1–SDEN0
INT1/SELECT
DRQ1
MCS2–MCS0
UCS/ONCE1
PCS3–PCS0
MCS3/RFSH
LCS/ONCE0
INT2/INTA0
PCS6/A2
PCS5/A1
–
SDATA
DRQ0
SCLK
INT4
INT0
RXD
RES
TXD
NMI
3
4
2
2
*
*
*
*
*
*
*
*
*
*
*
*
*
Reset Control and
Interrupt Service
Memory and
Peripheral Control
DMA Control
Asynchronous
Serial Port Control
Synchronous
Serial Port Control