參數(shù)資料
型號(hào)： ST16C654D
廠商： Exar Corporation
英文描述： Voltage Regulator IC; Package/Case:8-MSOP; Output Current:300mA; Output Voltage:3.3V; Supply Voltage Max:6V; Current Rating:300mA; Leaded Process Compatible:No; Output Current Max:300mA; Output Voltage Max:3.3V RoHS Compliant: No
中文描述： 2.97V至5.5V四路UART的64字節(jié)FIFO
文件頁(yè)數(shù)： 16/51頁(yè)
文件大?。?/td> 968K
代理商： ST16C654D
ST16C654/654D
2.97V TO 5.5V QUAD UART WITH 64-BYTE FIFO
REV. 5.0.0
16
2.11
Automatic RTS hardware flow control is used to prevent data overrun to the local receiver FIFO. The RTS#
output is used to request remote unit to suspend/resume data transmission. The auto RTS flow control features
is enabled to fit specific application requirement (see
Figure 11
):
Enable auto RTS flow control using EFR bit-6.
The auto RTS function must be started by asserting RTS# output pin (MCR bit-1 to logic 1 after it is enabled).
If needed, the RTS interrupt can be enabled through IER bit-6 (after setting EFR bit-4). The UART issues an
interrupt when the RTS# pin makes a transition from low to high: ISR bit-5 will be set to logic 1.
2.12
Auto CTS Flow Control
Automatic CTS flow control is used to prevent data overrun to the remote receiver FIFO. The CTS# input is
monitored to suspend/restart the local transmitter. The auto CTS flow control feature is selected to fit specific
application requirement (see Figure 11):
Enable auto CTS flow control using EFR bit-7.
If needed, the CTS interrupt can be enabled through IER bit-7 (after setting EFR bit-4). The UART issues an
interrupt when the CTS# pin is de-asserted (logic 1): ISR bit-5 will be set to 1, and UART will suspend
transmission as soon as the stop bit of the character in process is shifted out. Transmission is resumed after
the CTS# input is re-asserted (logic 0), indicating more data may be sent.
Auto RTS Hardware Flow Control
F
IGURE
10. R
ECEIVER
O
PERATION
IN
FIFO
AND
A
UTO
RTS F
LOW
C
ONTROL
M
ODE
Receive Data Shift
Register (RSR)
16X Clock
E
(
E
L
64 bytes by 11-bit
wide
FIFO
Receive Data Characters
FIFO
Trigger=16
Example
:
- RX FIFO trigger level selected at 16 bytes
Data fills to
56
Data falls to
8
Data Bit
Validation
Receive
Data FIFO
Receive
Data
Receive Data
Byte and Errors
RHR Interrupt (ISR bit-2) programmed for
desired FIFO trigger level.
FIFO is Enabled by FCR bit-0=1
RTS# de-asserts when data fills above the flow
control trigger level to suspend remote transmitter.
Enable by EFR bit-6=1, MCR bit-1.
RTS# re-asserts when data falls below the flow
control trigger level to restart remote transmitter.
Enable by EFR bit-6=1, MCR bit-1.
相關(guān)PDF資料
PDF描述
ST16C654DIQ64 2.97V TO 5.5V QUAD UART WITH 64-BYTE FIFO
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST16C654DCQ64 制造商:Exar Corporation 功能描述:
ST16C654DCQ64-0A-EB 功能描述:界面開(kāi)發(fā)工具 Supports C654D 64 ld TQFP, ISA Interface RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類(lèi)型:RS-485 工具用于評(píng)估:ADM3485E 接口類(lèi)型:RS-485 工作電源電壓:3.3 V
ST16C654DCQ64-F 功能描述:UART 接口集成電路 QUAD UARTW/64BYTE 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
ST16C654DCQ64-F 制造商:Exar Corporation 功能描述:IC QUAD UART 1.5MBPS 5.5V 64-LQFP
ST16C654DCQ64TR 功能描述:UART 接口集成電路 QUAD UARTW/64BYTE 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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