AM186ES Advanced Micro Devices, AM186ES Datasheet - Page 16

• Manufacturer Part Number: AM186ES
• Description: microcontrollers provide a low-cost/ high-performance solution for embedded system designers who wish to use the x86 architecture.
• Manufacturer: Advanced Micro Devices

1.2
1-2
DISTINCTIVE CHARACTERISTICS
A block diagram of each microcontroller is shown in Figure 1-1 and Figure 1-2. The
Am186ES microcontroller uses a 16-bit external bus, while the Am188ES microcontroller
has an 8-bit external bus.
The Am186ES and Am188ES microcontrollers include the following features:
E86
interface
— Lower system cost with higher performance
High performance
— 20-, 25-, 33-, and 40-MHz operating frequencies
— Supports zero-wait-state operation at 40 MHz with 70-ns static memory
— 1-Mbyte memory address space
— 64-Kbyte I/O space
Enhanced features provide improved memory access and remove the requirement for
a 2x clock input
— Nonmultiplexed address bus
— Processor operates at the clock input frequency
— On the Am186ES microcontroller, 8-bit or 16-bit memory and I/O static bus option
Enhanced integrated peripherals provide increased functionality, while reducing system
cost
— Thirty-two programmable I/O (PIO) pins
— Two full-featured asynchronous serial ports allow full-duplex, 7-bit, 8-bit, or 9-bit data
— Serial port hardware handshaking with CTS, RTS, ENRX, and RTR selectable for each
— Multidrop 9-bit serial port protocol
— Independent serial port baud rate generators
— DMA to and from the serial ports
— Watchdog timer can generate NMI or reset
— A pulse width demodulation option
— A data strobe, true asynchronous bus interface option included for DEN
— Pseudo Static RAM (PSRAM) controller includes auto refresh capability
— Reset configuration register
Familiar 80C186 peripherals
— Two independent DMA channels
— Programmable interrupt controller with up to eight external and eight internal
— Three programmable 16-bit timers
transfers
port
interrupts
family 80C186- and 80C188-compatible microcontrollers with enhanced bus
Features and Performance