Quick Detail:

8-Bit/16-Bit Microcontrollers

Description:

The Innovasic Semiconductor IA186EB and IA188EB microcontrollers are an upgrade for the 80C186EB/80C188EB microcontroller designs with integrated peripherals to provide increased functionality and reduce system costs. The IA186EB and IA188EB devices are designed to satisfy requirements of embedded products designed for telecommunications, office automation and storage, and industrial controls.

The IA186EB and IA188EB microcontrollers have a set of base peripherals beneficial to many embedded applications and include a standard numeric interface, an interrupt control unit, a chipselect unit, a DRAM refresh control unit, a power management unit, and three 16-bit timer/counters.

The IA186EB and IA188EB microcontrollers are capable of operating at 5.0 or 3.3 volts. This datasheet discusses both modes of operation. Where applicable, characteristics specific to either 3.3 or 5.0 volt operation are identified separately throughout this datasheet.

Additionally, the IA186EB and IA188EB include two integrated serial ports that support both synchronous and asynchronous communications, simplifying inter-processor and display communications. The IA186EB and IA188EB also have an enhanced chip-select unit and two multiplexed I/O ports. The enhanced chip-select unit offers 10 general chip selects, each with the ability to address up to 1 Mbyte. This enhanced unit enablesmemory-bank switching to expand the IA186EB/IA188EB 1 Mbyte address space. The I/O ports allow for basic functions such as scanning keypads for input. The ports can also be used to control system power consumption, disabling unneeded components.

The serial ports, I/O capabilities, and enhanced chip selects make the IA186EB/IA188EB an excellent processor for portable data acquisition or communication applications

Applications:

Low-Power Operating Modes

– Idle (freezes CPU clocks; peripherals are kept active)

– Power-Down (freezes all internal clocks)

Low-Power CPU Core (static)

Direct Addressing Capability

– Memory: 1 Mbyte

– I/O: 64 Kbyte

I/O Ports

– 2 each, 8-Bit

– Multiplexed

Clock Generator

Chip Selects

– 10 each, Programmable

– Integral Wait-State Generator

Memory Refresh Control Unit

Interrupt Controller, Programmable

Counter/Timers

– 3 each, 16-Bit

– Programmable

Serial Channels

– 2 each, UARTs

– Integral Baud Rate Generator

Operating Frequency (system clock input)

– 50 MHz @ 5V

– 32 MHz @ 3.3V

Specifications:

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