參數資料
型號: TL16C554I
廠商: Texas Instruments, Inc.
英文描述: ASYNCHRONOUS COMMUNICATIONS ELEMENT
中文描述: 異步通信元
文件頁數: 30/33頁
文件大?。?/td> 478K
代理商: TL16C554I
TL16C554, TL16C554I
ASYNCHRONOUS COMMUNICATIONS ELEMENT
SLLS165D – JANUARY 1994 – REVISED JULY 1998
30
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
scratchpad register
The scratch register is an 8-bit read/write register that has no affect on either channel in the ACE. It is intended
to be used by the programmer to hold data temporarily.
TXRDY operation
In mode 0, TXRDY is asserted (low) when the transmit FIFO is empty; it is released (high) when the FIFO
contains at least one byte. In this way, the FIFO is written with 16 bytes when TXRDY is asserted (low).
In mode 1, TXRDY is asserted (low) when the transmit FIFO is not full; in this mode, the transmit FIFO is written
with another byte when TXRDY is asserted (low).
Driver
Optional
Driver
External
Clock
Optional
Clock
Output
Oscillator Clock
to Baud
Generator Logic
VCC
Crystal
Oscillator Clock
to Baud
Generator Logic
RX2
VCC
C1
RP
C2
XTAL1
XTAL1
XTAL2
XTAL2
TYPICAL CRYSTAL OSCILLATOR NETWORK
CRYSTAL
RP
1 M
1 M
RX2
1.5 k
1.5 k
C1
C2
3.1 MHz
10–30 pF
40–60 pF
1.8 MHz
10–30 pF
40–60 pF
Figure 17. Typical Clock Circuits
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相關代理商/技術參數
參數描述
TL16C554IFN 功能描述:UART 接口集成電路 Quad UART with 16-Byte FIFOs 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
TL16C554IFNG4 功能描述:UART 接口集成電路 Quad UART w/16-Byte FIFOs 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
TL16C554IFNR 功能描述:UART 接口集成電路 Quad UART with 16-Byte FIFOs 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
TL16C554IFNRG4 功能描述:UART 接口集成電路 Quad UART w/16-Byte FIFOs 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
TL16C554IPN 功能描述:UART 接口集成電路 Qd UART w/16b FIFO 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