參數(shù)資料
型號(hào)： SC16C752BIBS
廠商： NXP Semiconductors N.V.
元件分類： 收發(fā)器
英文描述： 5 V, 2.2 V and 2.5 V dual UART, 5 Mbit-s (max.), with 64-byte FIFOs
封裝： SC16C752BIB48<SOT313-2 (LQFP48)|<<http://www.nxp.com/packages/SOT313-2.html<1<Always Pb-free,;SC16C752BIB48<SOT313-2 (LQFP48)|<<http://www.nxp.com/packages/SOT313-2.html&
文件頁(yè)數(shù)： 16/47頁(yè)
文件大小： 945K
代理商： SC16C752BIBS
SC16C752B
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 6 — 30 November 2010
16 of 47
NXP Semiconductors
SC16C752B
5 V, 2.2 V and 2.5 V dual UART, 5 Mbit/s (max.), with 64-byte FIFOs
6.6.2
Block DMA transfers (DMA mode 1)
Figure 11
shows TXRDYn and RXRDYn in DMA mode 1.
6.6.2.1
Transmitter
TXRDYn is active when there is a trigger level number of spaces available. It becomes
inactive when the FIFO is full.
6.6.2.2
Receiver
RXRDYn 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 receive FIFO
is flagged by LSR[7].
6.7 Sleep mode
Sleep mode is an enhanced feature of the SC16C752B 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, RXn, is idle (see
Section 6.8 “Break and time-out
conditions”
).
The transmit FIFO and transmit 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 receive 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 RXn line, when there is any change in the
state of the modem input pins, or if data is written to the transmit FIFO.
Remark:
Writing to the divisor latches DLL and DLM 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 DLM.
Fig 11. TXRDYn and RXRDYn in DMA mode 1
transmit
wrptr
wrptr
TXRDYn
FIFO full
TXRDYn
receive
rdptr
rdptr
FIFO EMPTY
RXRDYn
RXRDYn
002aaa234
trigger
level
trigger
level
at least one
location filled
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SC16C752BIBS,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
SC16C752BIBS,151 功能描述:UART 接口集成電路 2CH. 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
SC16C752BIBS,157 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
SC16C752BIBS-F 功能描述:UART 接口集成電路 16CB 2.5V-5V 2CH 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
SC16C752BIBS-S 功能描述:UART 接口集成電路 2CH. 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
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