参数资料
| 型号： | SC16C752IB48,128 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 7/47页 |
| 文件大小： | 0K |
| 描述： | IC DUAL UART 64BYTE 48LQFP |
| 标准包装： | 1 |
| 通道数： | 2，DUART |
| 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： | 48-LQFP |
| 供应商设备封装： | 48-LQFP（7x7） |
| 包装： | 标准包装 |
| 其它名称： | 568-5955-6 |
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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 agged 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
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
TXRDY
FIFO FULL
TXRDY
RX
rdptr
FIFO EMPTY
RXRDY
AT LEAST ONE
LOCATION FILLED
RXRDY
002aaa234
TRIGGER
LEVEL
TRIGGER
LEVEL
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| SC16C754 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Quad UART with 64-byte FIFO |
| SC16C754B | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.) with 64-byte FIFOs |
| SC16C754BIA68 | 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 |
| SC16C754BIA68,512 | 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 |
| SC16C754BIA68,518 | 功能描述:UART 接口集成电路 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 |
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