參數(shù)資料
型號(hào)： SC16C752
廠商： NXP Semiconductors N.V.
英文描述： Dual UART with 64-byte FIFO
中文描述： 雙UART具有64字節(jié)FIFO
文件頁(yè)數(shù)： 15/47頁(yè)
文件大小： 604K
代理商： SC16C752
Philips Semiconductors
SC16C752
Dual UART with 64-byte FIFO
Product data
Rev. 04 — 20 June 2003
15 of 47
9397 750 11635
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
6.6.2
Block DMA transfers (DMA mode 1)
Figure 10
shows TXRDY and RXRDY in DMA mode 1.
Transmitter:
TXRDY is active when there is a trigger level number of spaces
available. It becomes inactive when the FIFO is full.
Receiver:
RXRDY becomes active when the trigger level has been reached, or when
a time-out interrupt occurs. It will go inactive when the FIFO is empty or an error in
the RX FIFO is flagged by LSR[7].
6.7 Sleep mode
Sleep mode is an enhanced feature of the SC16C752 UART. It is enabled when
EFR[4], the enhanced functions bit, is set
and
when IER[4] is set. Sleep mode is
entered when:
The serial data input line, RX, is idle (see
Section 6.8 “Break and time-out
conditions”
).
The TX FIFO and TX shift register are empty.
There are no interrupts pending except THR and time-out interrupts.
Remark:
Sleep mode will
not
be entered if there is data in the RX FIFO.
In sleep mode, the UART clock and baud rate clock are stopped. Since most registers
are clocked using these clocks, the power consumption is greatly reduced. The UART
will wake up when any change is detected on the RX line, when there is any change
in the state of the modem input pins, or if data is written to the TX FIFO.
Remark:
Writing to the divisor latches, DLL and DLH, to set the baud clock, must not
be done during sleep mode. Therefore, it is advisable to disable sleep mode using
IER[4] before writing to DLL or DLH.
Fig 10. TXRDY and RXRDY in DMA mode 1.
TX
wrptr
wrptr
TXRDY
FIFO FULL
TXRDY
RX
rdptr
rdptr
FIFO EMPTY
RXRDY
AT LEAST ONE
LOCATION FILLED
RXRDY
002aaa234
TRIGGER
LEVEL
TRIGGER
LEVEL
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參數(shù)描述
SC16C752B 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.), with 64-byte FIFOs
SC16C752B_10 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:5 V, 2.2 V and 2.5 V dual UART, 5 Mbit/s (max.), with 64-byte FIFOs
SC16C752BIB48 制造商:NXP Semiconductors 功能描述:IC UART DUAL 64BYTE FIFO 16C752 制造商:NXP Semiconductors 功能描述:IC, UART, DUAL, 64BYTE FIFO, 16C752 制造商:NXP Semiconductors 功能描述:IC, UART, DUAL, 64BYTE FIFO, 16C752, No. of Channels:2, Data Rate:5Mbps, Supply Voltage Min:2.25V, Supply Voltage Max:5.5V, Digital IC Case Style:LQFP, No. of Pins:48, Operating Temperature Min:-40C, Operating Temperature Max:85C, , RoHS Compliant: Yes
SC16C752BIB48,128 功能描述:UART 接口集成電路 16CB 2.5V-5V 2CH 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
SC16C752BIB48,151 功能描述:UART 接口集成電路 16CB 2.5V-5V 2CH 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
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