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| 型号： | SC16C754BIB80,557 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 26/50页 |
| 文件大小： | 0K |
| 描述： | IC UART QUAD W/FIFO 80-LQFP |
| 产品培训模块： | Stand-Alone UARTs |
| 标准包装： | 595 |
| 通道数： | 4，QUART |
| FIFO's： | 64 字节 |
| 电源电压： | 2.5V，3.3V，5V |
| 带自动流量控制功能： | 是 |
| 带故障启动位检测功能： | 是 |
| 带调制解调器控制功能： | 是 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 80-LQFP |
| 供应商设备封装： | 80-LQFP（12x12） |
| 包装： | 管件 |
| 产品目录页面： | 828 (CN2011-ZH PDF) |
| 其它名称： | 568-1207 935274939557 SC16C754BIB80 |
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SC16C754B_4
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 04 — 6 October 2008
32 of 51
NXP Semiconductors
SC16C754B
5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.) with 64-byte FIFOs
7.12 Transmission Control Register (TCR)
This 8-bit register is used to store the RX FIFO threshold levels to stop/start transmission
during hardware/software ow control. Table 20 shows transmission control register bit
settings.
TCR trigger levels are available from 0 to 60 bytes with a granularity of four.
Remark: TCR can only be written to when EFR[4] = 1 and MCR[6] = 1. The programmer
must program the TCR such that TCR[3:0] > TCR[7:4]. There is no built-in hardware
check to make sure this condition is met. Also, the TCR must be programmed with this
condition before auto-RTS or software ow control is enabled to avoid spurious operation
of the device.
7.13 Trigger Level Register (TLR)
This 8-bit register is used to store the transmit and received FIFO trigger levels used for
DMA and interrupt generation. Trigger levels from 4 to 60 can be programmed with a
granularity of 4. Table 21 shows trigger level register bit settings.
Remark: TLR can only be written to when EFR[4] = 1 and MCR[6] = 1. If TLR[3:0] or
TLR[7:4] are logic 0, the selectable trigger levels via the FIFO Control Register (FCR) are
used for the transmit and receive FIFO trigger levels. Trigger levels from 4 to 60 bytes are
available with a granularity of four. The TLR should be programmed for N
4, where N is the
desired trigger level.
7.14 FIFO Ready register (FIFO Rdy)
The FIFO Rdy register provides real-time status of the transmit and receive FIFOs of both
channels.
Table 20.
Transmission control register bits description
Bit
Symbol
Description
7:4
TCR[7:4]
RX FIFO trigger level to resume transmission [(0 to 60) bytes].
3:0
TCR[3:0]
RX FIFO trigger level to halt transmission [(0 to 60) bytes].
Table 21.
Trigger level register bits description
Bit
Symbol
Description
7:4
TLR[7:4]
RX FIFO trigger levels (4 to 60), number of characters available.
3:0
TLR[3:0]
TX FIFO trigger levels (4 to 60), number of spaces available.
Table 22.
FIFO ready register bits description
Bit
Symbol
Description
7:4
FIFO Rdy[7:4]
0 = there are less than a RX trigger level number of characters in the
RX FIFO
1 = the RX FIFO has more than a RX trigger level number of characters
available for reading or a time-out condition has occurred
3:0
FIFO Rdy[3:0]
0 = there are less than a TX trigger level number of spaces available in
the TX FIFO
1 = there are at least a TX trigger level number of spaces available in the
TX FIFO
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SC16C754BIB80-T | 功能描述:UART 接口集成电路 16CB 2.5V-5V 4CH UART 64B FIFO RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| SC16C754BIBM | 功能描述:UART 接口集成电路 16CB 2.5V-5V 4CH UART 64B FIFO RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| SC16C754BIBM,128 | 功能描述:UART 接口集成电路 16CB 2.5V-5V 4CH RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| SC16C754BIBM,151 | 功能描述:UART 接口集成电路 16CB 2.5V-5V 4CH RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| SC16C754BIBM,157 | 功能描述:UART 接口集成电路 16CB 2.5V-5V 4CH RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
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