參數資料
型號： SC16C751BIBS
廠商： NXP Semiconductors N.V.
元件分類： 收發(fā)器
英文描述： 5 V, 3.3 V and 2.5 V UART with 64-byte FIFOs
封裝： SC16C751BIBS<SOT616-3 (HVQFN24)|<<http://www.nxp.com/packages/SOT616-3.html<1<Always Pb-free,;SC16C751BIBS<SOT616-3 (HVQFN24)|<<http://www.nxp.com/packages/SOT616-3.html&
文件頁數： 20/32頁
文件大小： 150K
代理商： SC16C751BIBS
SC16C751B_2
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 — 10 October 2008
20 of 32
NXP Semiconductors
SC16C751B
5 V, 3.3 V and 2.5 V UART with 64-byte FIFOs
7.8 Modem Status Register (MSR)
This register provides the current state of the control interface signals from the modem, or
other peripheral device to which the SC16C751B is connected. Four bits of this register
are used to indicate the changed information. These bits are set to a logic 1 whenever a
control input from the modem changes state. These bits are set to a logic 0 whenever the
CPU reads this register.
[1]
Whenever any MSR[0] is set to logic 1, a Modem Status Interrupt will be generated if modem status
interrupt is enabled.
7.9 Scratchpad Register (SPR)
The SC16C751B provides a temporary data register to store 8 bits of user information.
7.10 SC16C751B external reset conditions
Table 19.
Bit
7:5
4
Modem Status Register bits description
Symbol
Description
MSR[7:5]
reserved
MSR[4]
Clear To Send. CTS. CTS functions as hardware flow control signal input if it
is enabled via MCR[5]. Flow control (when enabled) allows starting and
stopping the transmissions based on the external modem CTS signal. A
logic 1 at the CTS pin will stop SC16C751B transmissions as soon as current
character has finished transmission. Normally MSR[4] is the complement of
the CTS input. However, in the Loopback mode, this bit is equivalent to the
RTS bit in the MCR register.
MSR[3:1]
reserved
MSR[0]
CTS
[1]
logic 0 = no CTS change (normal default condition)
logic 1 = the CTS input to the SC16C751B has changed state since the last
time it was read. A modem Status Interrupt will be generated.
3:1
0
Table 20.
Register
IER
ISR
LCR
MCR
LSR
MSR
FCR
Reset state for registers
Reset state
IER[7:0] = 0
ISR[7:1] = 0; ISR[0] = 1
LCR[7:0] = 0
MCR[7:0] = 0
LSR[7] = 0; LSR[6:5] = 1; LSR[4:0] = 0
MSR[7:4] = input signals; MSR[3:0] = 0
FCR[7:0] = 0
Table 21.
Output
TX
RTS
INT
Reset state for outputs
Reset state
HIGH
HIGH
LOW
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相關代理商/技術參數
參數描述
SC16C751BIBS,128 功能描述:UART 接口集成電路 16CB 2.5-5V 3MBPS 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
SC16C751BIBS,151 功能描述:UART 接口集成電路 16CB 2.5-5V 3MBPS 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
SC16C751BIBS,157 功能描述:UART 接口集成電路 16CB 2.5-5V 3MBPS 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
SC16C751BIBS-F 功能描述:UART 接口集成電路 16CB 2.5-5V 3MBPS UART 64BFIFO 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
SC16C751BIBS-S 功能描述:UART 接口集成電路 16CB 2.5-5V 3MBPS UART 64BFIFO 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
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