AMD Am188TMER, Am186TMER user manual Features and Performance, KEY Features and Benefits

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1 FEATURES AND PERFORMANCE

Compared to the 80C186/188 microcontrollers, the Am186™ER and Am188™ER microcontrollers enable designers to increase performance and functionality, while reducing the cost, size, and power consumption of embedded systems. The Am186ER and Am188ER microcontrollers are cost-effective, enhanced versions of the AMD 80C186/188 devices.

The Am186ER and Am188ER microcontrollers deliver 80C186/188 compatibility plus 32 Kbyte of integrated memory, increased performance, reduced power consumption, serial communications, and a glueless bus interface. Developed exclusively for the embedded marketplace, the Am186ER and Am188ER microcontrollers increase the performance of existing 80C186/188 systems while decreasing their cost.

Because the Am186ER and Am188ER microcontrollers integrate memory, on-chip peripherals, and system logic and offer up to twice the performance of an 80C186/188, they are ideal solutions for customers who need to enhance and cost-reduce their present x86 designs.

1.1KEY FEATURES AND BENEFITS

The Am186ER and Am188ER microcontrollers extend the AMD family of microcontrollers based on the industry-standard x86 architecture. Upgrading to the Am186ER or Am188ER microcontrollers is attractive for the following reasons:

νMinimized total system cost—The new on-chip RAM, peripherals, and system-interface logic nearly eliminate the need for external devices, reducing the overall system cost of new or existing 80C186/188 designs.

νIntegrated RAM—32 Kbyte of internal RAM ensures a low-cost supply of memory and also a smaller form factor and lower power consumption for system designs. The internal memory provides the same performance as external zero-wait-state RAM devices.

νEnhanced performance—The Am186ER and Am188ER microcontrollers offer up to 40-MHz operation, which requires only a 10-MHz input clock. The nonmultiplexed address bus offers faster, unbuffered access to memory.

νZero-wait-stateoperation—Enhanced bus timing permits zero-wait-state operation at 40 MHz with internal RAM or inexpensive 70-ns memories.

ν3.3-V supply voltage with 5-V-tolerant I/O—The Am186ER and Am188ER microcontrollers use a 3.3-V supply over the entire range of operating frequencies, increasing the performance of one-supply3.3-V systems while preserving much lower power consumption when compared to 5-V operation. The 5-V-tolerant I/O accommodates existing 5-V designs.

νEnhanced functionality—The new and enhanced on-chip peripherals include an asynchronous serial port, a virtual watchdog timer, an additional interrupt pin, a high- speed synchronous serial interface, a PSRAM controller, a 16-bit Reset Configuration Register, enhanced chip-select functionality, and 32 programmable I/Os.

νx86 software compatibility—The Am186ER and Am188ER microcontrollers are 80C186/188-compatible and upward-compatible with the AMD E86 family.

Features and Performance 1-1