AM186EM-20KC/W AMD [Advanced Micro Devices], AM186EM-20KC/W Datasheet - Page 2

• 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]

Am186EM MICROCONTROLLER BLOCK DIAGRAM
Note:
* All PIO signals are shared with other physical pins. See the pin descriptions beginning on page 25 and Table 2 on page 30 for
information on shared functions.
2
CLKDIV2
RES
S2–S0
ARDY
SRDY
HOLD
HLDA
GND
DT/R
DEN
V
UZI
S6/
CC
A19–A0
AD15–AD0
X1
Management
CLKOUTA
Clock and
Registers
X2
Registers
Control
Control
Power
Unit
Interface
ALE
CLKOUTB
Bus
Unit
INT3/INTA1/IRQ
BHE/ADEN
WR
Am186/188EM and Am186/188EMLV Microcontrollers
Refresh
Control
WLB
INT4
Unit
WHB
Control Unit
INT2/INTA0
Registers
RD
Interrupt
Control
Execution
INT1/SELECT
Unit
P R E L I M I N A R Y
LCS/ONCE0
INT0
MCS3/RFSH
NMI
MCS2–MCS0
PSRAM
Control
TMRIN0
Unit
Max Count B
0
Registers
Chip-Select
UCS/ONCE1
Timer Control
TMROUT0
Max Count A
16-Bit Count
Registers
Registers
Registers
Unit
1 (WDT)
Control
Registers
Unit
Control
TMRIN1
PCS3–PCS0
PCS5/A1
TMROUT1
PCS6/A2
2
SCLK
Synchronous Serial
SDEN0 SDEN1
20-Bit Destination
DRQ0
Registers
Interface
20-Bit Source
16-Bit Count
Control
0
Asynchronous
Registers
Registers
Pointers
Pointers
Control
Serial Port
DMA
Unit
Registers
Control
DRQ1
1
SDATA
Unit
PIO
PIO31–
PIO0*
TXD
RXD