EI16C554 데이터 시트보기 (PDF) - IMP, Inc

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EI16C554

QUAD UART

IMP, Inc 

Semiconductor, Inc.

FEATURES

•

5V Operation

•

Pin to pin and functional compatible to

16C454

•

16 byte transmit FIFO

•

16 byte receive FIFO with error flags

•

Modem control signals ( CTSÔ, RTSÔ,

DSRÔ, DTRÔ, RIÔ, CDÔ)

•

Programmable character lengths (5, 6, 7, 8)

•

Even, odd, or no parity bit generation and

detection

•

Status report register

•

Independent transmit and receive control

•

TTL compatible inputs, outputs

•

Software compatible with 8250 and

Ei16C550

•

460.8 kHz transmit/receive operation with

7.372 MHz crystal or external clock source

Ei16C554

QUAD UART

DESCRIPTION

The Ei16C554 is Universal Asynchronous Receiver

and Transmitter with 16 byte transmit and receive

FIFO. A programmable baud rate generator is provided

to select transmit and receive clock rates from 50 Hz to

1.5MHz.

The Ei16C554 is an improved version of the Ei16C550

UART with higher operating speed and lower access

time. The Ei16C554 on board status registers provides

the error conditions, type and status of the transfer

operation being performed. Included is complete

MODEM control capability, and a processor interrupt

system that may be software tailored to the user?s

requirements. The Ei16C554 provides internal loop-

back capability for on board diagnostic testing.

The Ei16C554 is fabricated in an advanced CMOS

process to achieve low drain power and high speed

requirements.

PIN CONFIGURATION

DSRAÔ 10

CTSAÔ 11

DTRAÔ 12

VCC 13

RTSAÔ 14

INTA 15

CSAÔ 16

TXA 17

IOWÔ 18

TXB 19

CSBÔ 20

INTB 21

RTSBÔ 22

GND 23

DTRB 24

CTSDÔ 25

DSRBÔ 26

Ei16C554

60 DSRDÔ

59 CTSDÔ

58 DTRDÔ

57 GND

56 RTSDÔ

55 INTD

54 CSDÔ

53 TXD

52 IORÔ

51 TXC

50 CSCÔ

49 INTC

48 RTSCÔ

47 VCC

46 DTRCÔ

45 CTSCÔ

44 DSRCÔ

68-PIN PLCC

DSRA* 1

CTSA* 2

DTRA* 3

VCC 4

RTSA* 5

INTA 6

CSA* 7

TXA 8

IOW* 9

TXB 10

CSB* 11

INTB 12

RTSB* 13

GND 14

DTRB 15

CTSD* 16

Ei16C554

48 DSRD*

47 CTSD*

46 DTRD*

45 GND

44 RTSD*

43 INTD

42 CSD*

41 TXD

40 IOR*

39 TXC

38 CSC*

37 INTC

36 RTSC*

35 VCC

34 DTRC*

33 CTSC*

64-PIN TQFP

11

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