- 您現在的位置：買賣IC網 > PDF目錄384931 > ST16C454 (Exar Corporation) QUAD UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART) PDF資料下載
參數資料
| 型號： | ST16C454 |
| 廠商： | Exar Corporation |
| 英文描述： | QUAD UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART) |
| 中文描述： | 四通用異步接收/發(fā)送器（UART） |
| 文件頁數： | 4/30頁 |
| 文件大?。?/td> | 378K |
| 代理商： | ST16C454 |
第1頁第2頁第3頁當前第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁
ST16C454/68C454
4
Rev. 3.20
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 UARTs (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 UARTs (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
-CS C-D
16,20
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
Pin
Signal
type
Pin Description
SYMBOL DESCRIPTION
相關PDF資料 |
PDF描述 |
|---|---|
| ST16C454CJ68 | QUAD UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART) |
| ST16C454IJ68 | QUAD UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART) |
| ST68C454 | QUAD UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART) |
| ST16C550CQ48 | UART WITH 16-BYTE FIFO’s |
| ST16C550IJ44 | UART WITH 16-BYTE FIFO’s |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ST16C454_05 | 制造商:EXAR 制造商全稱:EXAR 功能描述:QUAD UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART) |
| ST16C454CJ | 制造商:Exar Corporation 功能描述: |
| ST16C454CJ-0A-EVB | 功能描述:界面開發(fā)工具 Supports C454 68 ld PLCC, ISA Interface RoHS:否 制造商:Bourns 產品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| ST16C454CJ68 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| ST16C454CJ68-F | 功能描述:UART 接口集成電路 QUAD UART RoHS:否 制造商:Texas Instruments 通道數量:2 數據速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復。