ST16C454_05 datasheet(4/29 Pages) EXAR

tên linh kiện	ST16C454

Giải thích chi tiết về linh kiện	QUAD UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART)

Download	29 Pages

Scroll/Zoom	100%

nhà sản xuất	EXAR [Exar Corporation]

Trang chủ	http://www.exar.com

Logo

4 / 29 page

ST16C454

4

Rev. 3.31

16/-68

31

I

16/68 Interface Type Select (input with internal pull-up). - This input

provides the 16 (Intel) or 68 (Motorola) bus interface type select. The

functions of -IOR, -IOW, INT A-D, and -CS A-D are re-assigned with

the logical state of this pin. When this pin is a logic 1, the 16 mode

interface ST16C454 is selected. When this pin is a logic 0, the 68

mode interface (ST68C454) is selected. When this pin is a logic 0,

-IOW is re-assigned to R/-W, RESET is re-assigned to -RESET, -

IOR is not used, and INT A-D(s) are connected in a WIRE-OR”

configuration. The WIRE-OR outputs are connected internally to the

open source IRQ signal output.

A0

34

I

Address-0 Select Bit. Internal registers address selection in 16 and

68 modes.

A1

33

I

Address-1 Select Bit. Internal registers address selection in 16 and

68 modes.

A2

32

I

Address-2 Select Bit. - Internal registers address selection in 16

and 68 modes.

A3-A4

20,50

I

Address 3-4 Select Bits. - When the 68 mode is selected, these

pins are used to address or select individual UART’s (providing -

CS is a logic 0). In the 16 mode, these pins are reassigned as chip

selects, see -CSB and -CSC.

-CS

16

I

Chip Select. (active low) - In the 68 mode, this pin functions as a

multiple channel chip enable. In this case, all four UART’s (A-D)

are enabled when the -CS pin is a logic 0. An individual UART

channel is selected by the data contents of address bits A3-A4.

When the 16 mode is selected, this pin functions as -CSA, see

definition under -CS A-B.

-CS A-B

16,20

-CS C-D

50,54

I

Chip Select A, B, C, D (active low) - This function is associated with

the 16 mode only, and for individual channels, “A” through “D.”

When in 16 Mode, these pins enable data transfers between the

user CPU and the ST16C454 for the channel(s) addressed.

Individual UART sections (A, B, C, D) are addressed by providing

a logic 0 on the respective -CS A-D pin. When the 68 mode is

selected, the functions of these pins are reassigned. 68 mode

functions are described under the their respective name/pin

headings.

Symbol

Signal

Pin Description

type

SYMBOL DESCRIPTION

Số phần tương tự - ST16C454_05

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Exar Corporation	ST16C454CJ68	378Kb / 30P	QUAD UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART)
Exar Corporation	ST16C454IJ68	378Kb / 30P	QUAD UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART)

More results

Mô tả tương tự - ST16C454_05

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Exar Corporation	ST16C454	378Kb / 30P	QUAD UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART)
Intersil Corporation	IM7332	1Mb / 36P	Universal Asynchronous Receiver Transmitter(UART)
A1 PROs co., Ltd.	EI16C450	1Mb / 1P	Universal Asynchronous Receiver Transmitter(UART) 06/15/99
Exar Corporation	ST16C450	182Kb / 28P	UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART)
List of Unclassifed Man...	COM8017	553Kb / 8P	UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER UART
NXP Semiconductors	SCC2691	168Kb / 24P	Universal asynchronous receiver/transmitter UART 1998 Sep 04
IMP, Inc	IMP16C554	510Kb / 20P	Quad Universal Asynchronous Receiver/Transmitter (UART) with FIFOs
Intersil Corporation	CDP1854A	95Kb / 21P	Programmable Universal Asynchronous Receiver/Transmitter (UART) March 1997
Intersil Corporation	HD-6402	154Kb / 7P	CMOS Universal Asynchronous Receiver Transmitter (UART)
Harris Corporation	HD6402	100Kb / 6P	CMOS Universal Asynchronous Receiver Transmitter (UART)

More results

ST16C454 bảng dữ liệu(PDF) 4 Page - Exar Corporation

ST16C454 bảng dữ liệu(HTML) 4 Page - Exar Corporation

Số phần tương tự - ST16C454_05

Mô tả tương tự - ST16C454_05

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

bảng dữ liệu tải về

Link URL