EI68C681 Ver la hoja de datos (PDF) - IMP, Inc

Número de pieza

componentes Descripción

Lista de partido

EI68C681

DUAL UART

IMP, Inc 

Semiconductor, Inc.

The DUART provides a flow control capability to inhibit

transmission from a remote device when the buffer of

the receiving DUART is full, thus preventing loss of

data. The DUART also provides a general purpose 16-

bit counter/timer (which may also be used as a

programmable bit rate generator), a multipurpose input

port and a multipurpose output port.

Ei68C681

Ei88C681

DUAL UART

These ports can be used as general purpose I/O ports

or can be assigned specific functions such as clock

inputs or status/interrupt outputs under program control.

The Ei68C681 are fabricated using Epic’s advanced

CMOS process to provide high performance and low

power consumption.

BLOCK DIAGRAM

D0-D7

8

R/W•

DTACK•

CE•

A0-A3 4

RESET•

INTR•

IACK•

BUS BUFFER

OPERATION

CONTROL

ADDRESS

DECODE

R/W CONTROL

INTERRUPT

CONTROL

IMR

ISR

IVR

X1/CLK

X2

TIMING

AND

CONTROL

LOGIC

14

CHANNEL

TRANSMIT

LOGIC

RECEIVE

LOGIC

TxDA

RxDA

CHANNEL B

(AS ABOVE)

INPUT PORT

IPCR

ACR

TxDB

RxDB

6 IP0-IP6

OUTPUT PORT

8

OPCR

OPR

VCC

GND

Share Link: