GENERAL DESCRIPTION
The Am186™ ES/ESLV and Am188™ ES/ESLV microcontrollers are an ideal upgrade for 80C186/188 and 80L186/188 microcontroller designs requiring 80C186/188 and 80L186/188 compatibility, increased performance, serial communications, and a direct bus interface.

DISTINCTIVE CHARACTERISTICS
■E86 family 80C186-/188- and 80L186-/188-compatible microcontrollers with enhanced bus interface
   — Lower system cost with higher performance
   — 3.3-V ±0.3-V operation(Am186ESLV and Am188ESLV microcontrollers)
■ High performance
   — 20-, 25-, 33-, and 40-MHz operating frequencies
   — Supports zero-wait-state operation at 25 MHz with 100-ns static memory (Am186ESLV and Am188ESLV microcontrollers) and 40 MHz with 70-ns static memory (Am186ES and Am188ES microcontrollers)
   — 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/ESLV 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 transfers
   — Serial port hardware handshaking with CTS, RTS, ENRX, and RTR selectable for each port
   — 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 80C186/80L186 peripherals
   — Two independent DMA channels
   — Programmable interrupt controller with up to eight external and eight internal interrupts
   — Three programmable 16-bit timers
   — Programmable memory and peripheral chip-select logic
   — Programmable wait state generator
   — Power-save clock divider
■ Software-compatible with the 80C186/80L186 and 80C188/80L188 microcontrollers with widely available native development tools, applications, and system software
■ A compatible evolution of the Am186EM and Am188EM microcontrollers
■ Available in the following packages:
   — 100-pin, thin quad flat pack (TQFP)
   — 100-pin, plastic quad flat pack (PQFP)