AM186ER-25KC

GENERAL DESCRIPTION

The Am186TMER and Am188TMER microcontrollers are par t of the AMD E86™ family of embedded microcontrollers and microprocessors based on the x86 architecture. The Am186ER and Am188ER microcontrollers are the ideal upgrade for designs requiring 80C186/80C188 microcontroller compatibility, increased performance, serial communications, a direct bus interface, and integrated memory.

DISTINCTIVE CHARACTERISTICS

■ E86TM family 80C186- and 80C188-compatible microcontrollers with enhanced bus interface
— Lower system cost with high performance
— 3.3-V ± 0.3-V operation with 5-V tolerant I/O
■ Memory integration
— 32 Kbyte of internal SRAM
— Internal SRAM provides same performance as zero-wait-state external memory
■ High performance
— 25-, 33-, 40- and 50-MHz operating frequencies
— Supports zero-wait-state operation at 50 MHz with 55-ns external memory
— 1-Mbyte memory address space
— 64-Kbyte I/O space
■ Enhanced features provide faster access to memory and various clock input modes
— Nonmultiplexed address bus provides glueless interface to external RAM and ROM
— Phase-locked loop (PLL) enables processor to operate at up to four times clock input frequency
■ Enhanced integrated peripherals
— Thirty-two programmable I/O (PIO) pins
— Asynchronous serial port allows full-duplex, 7-bit or 8-bit data transfers
— DMA to and from asynchronous serial port
— Synchronous serial interface allows half-duplex, bidirectional data transfer to and from ASICs
— Reset configuration register
— Additional external interrupts
— Hardware watchdog timer can generate NMI or system reset
— Pseudo static RAM (PSRAM) controller includes auto refresh capability
■ Familiar 80C186 peripherals with enhanced functionality
— Two independent DMA channels
— Programmable interrupt controller with six external interrupts
— Three programmable 16-bit timers
— Programmable memory and peripheral chip-select logic
— Programmable wait state generator
— Power-save clock mode
■ Software-compatible with the 80C186 and 80C188 microcontrollers
■ Widely available native development tools, applications, and system software
■ Available in the following packages:
— 100-pin, thin quad flat pack (TQFP)
— 100-pin, plastic quad flat pack (PQFP)