AM-1  -  系列元器件数据手册
Am186EDLV  -  High Performance,80C186- and 80C188-Compatible,16-Bit Embedded Microcontrollers  -  Advanced Micro Devices, Inc.(AMD)  -  16位嵌入式系统

DISTINCTIVE CHARACTERISTICS
n E86TM family 80C186- and 80C188-compatible microcontroller with enhanced bus interface
– Lower system cost with higher performance
– 3.3-V ± 0.3-V operation (Am186EDLV microcontrollers)
n Programmable DRAM Controller
– Supports zero-wait-state operation with 50-ns DRAM at 40 MHz, 60-ns @ 33 MHz, 70-ns @ 25MHz
– Includes programmable CAS-before-RAS refresh capability
n High performance
– 20-, 25-, 33-, and 40-MHz operating frequencies
– Zero-wait-state operation at 40 MHz with 70-ns static memory
– 1-Mbyte memory address space
– 64-Kbyte I/O space
n 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
– 8-bit or 16-bit programmable bus sizing including 8-bit boot option
n Enhanced integrated peripherals
– 32 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
– Improved serial port operation enhances 9-bit DMA support
– 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
– Reset configuration register
n Familiar 80C186 peripherals
– Two independent DMA channels
– Programmable interrupt controller with up to 8 external and 8 internal interrupts
– Three programmable 16-bit timers
– Programmable memory and peripheral chip-select logic
– Programmable wait state generator
– Power-save clock divider
n Software-compatible with the 80C186 and 80C188 microcontrollers with widely available native development tools, applications, and system software
n A compatible evolution of the Am186EM, Am186ES, and Am186ER microcontrollers
n Available in the following packages:
– 100-pin, thin quad flat pack (TQFP)
– 100-pin, plastic quad flat pack (PQFP)

GENERAL DESCRIPTION
The Am186TMED/EDLV microcontrollers are part of the AMD E86TM family of embedded microcontrollers and microprocessors based on the x86 architecture. The
Am186ED/EDLV microcontrollers are the ideal upgrade for 80C186/188 designs requiring 80C186/188 compatibility, increased performance, serial communications, a
direct bus interface, and more than 64K of memory.
The Am186ED/EDLV microcontrollers integrate a complete DRAM controller to take advantage of low DRAM costs. This reduces memory subsystem costs while maintaining SRAM performance.The Am186ED/EDLV microcontrollers also integrate the functions of a CPU, nonmultiplexed address bus, three timers, watchdog timer, chip selects, interrupt controller, two DMA controllers, two asynchronous serial ports, programmable bus sizing, and programmable I/O (PIO) pins on one chip.
Compared to the 80C186/188 microcontrollers, the Am186ED/EDLV microcontrollers enable designers to reduce the size, power consumption, and cost of embedded systems, while increasing reliability, functionality, and performance.
The Am186ED/EDLV microcontrollers have been designed to meet the most common requirements of embedded products developed for the communications, office automation, mass storage, and general embedded markets. Specific applications include PBXs, multiplexers, modems, disk drives, hand-held and desktop terminals, fax machines, printers, photocopiers, and industrial controls.