參數(shù)資料
型號: SC16C754IA68
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: Quad UART with 64-byte FIFO
中文描述: 4 CHANNEL(S), 5M bps, SERIAL COMM CONTROLLER, PQCC68
封裝: PLASTIC, MS-018, SOT-188-2, LCC-68
文件頁數(shù): 16/49頁
文件大?。?/td> 622K
代理商: SC16C754IA68
Philips Semiconductors
SC16C754
Quad UART with 64-byte FIFO
Product data
Rev. 04 — 19 June 2003
16 of 49
9397 750 11618
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
6.6 DMA operation
There are two modes of DMA operation, DMA mode 0 or DMA mode 1, selected by
FCR[3].
In DMA mode 0 or FIFO disable (FCR[0] = 0) DMA occurs in single character
transfers. In DMA mode 1, multi-character (or block) DMA transfers are managed to
relieve the processor for longer periods of time.
6.6.1
Single DMA transfers (DMA mode 0/FIFO disable)
Figure 10
shows TXRDY and RXRDY in DMA mode 0/FIFO disable.
Transmitter:
When empty, the TXRDY signal becomes active. TXRDY will go inactive
after one character has been loaded into it.
Receiver:
RXRDY is active when there is at least one character in the FIFO. It
becomes inactive when the receiver is empty.
Fig 10. TXRDY and RXRDY in DMA mode 0/FIFO disable.
TX
wrptr
wrptr
FIFO EMPTY
TXRDY
AT LEAST ONE
LOCATION FILLED
TXRDY
RX
rdptr
rdptr
FIFO EMPTY
RXRDY
AT LEAST ONE
LOCATION FILLED
RXRDY
002aaa232
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SC16C754IA68,512 功能描述:UART 接口集成電路 16C 2.5V-5V 4CH UART 64B FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)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
SC16C754IA68,518 功能描述:UART 接口集成電路 16C 2.5V-5V 4CH UART 64B FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)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
SC16C754IA68,529 功能描述:UART 接口集成電路 16C 2.5V-5V 4CH UART 64B FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)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
SC16C754IB80 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Quad UART with 64-byte FIFO
SC16C754IB80,528 功能描述:UART 接口集成電路 16C 2.5V-5V 4CH UART 64B FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)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