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參數(shù)資料
| 型號(hào)： | SC16C754IA68 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Quad UART with 64-byte FIFO |
| 中文描述： | 4 CHANNEL(S), 5M bps, SERIAL COMM CONTROLLER, PQCC68 |
| 封裝： | PLASTIC, MS-018, SOT-188-2, LCC-68 |
| 文件頁數(shù)： | 10/49頁 |
| 文件大?。?/td> | 622K |
| 代理商： | SC16C754IA68 |
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Philips Semiconductors
SC16C754
Quad UART with 64-byte FIFO
Product data
Rev. 04 — 19 June 2003
10 of 49
9397 750 11618
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
6.2.2
Auto-CTS
The transmitter circuitry checks CTS before sending the next data byte. When CTS is
active, the transmitter sends the next byte. To stop the transmitter from sending the
following byte, CTS must be deasserted before the middle of the last stop bit that is
currently being sent. The auto-CTS function reduces interrupts to the host system.
When flow control is enabled, CTS level changes do not trigger host interrupts
because the device automatically controls its own transmitter. Without auto-CTS, the
transmitter sends any data present in the transmit FIFO and a receiver overrun error
may result.
6.3 Software flow control
Software flow control is enabled through the enhanced feature register and the
modem control register. Different combinations of software flow control can be
enabled by setting different combinations of EFR[3:0].
Table 3
shows software flow
control options.
(1) N = receiver FIFO trigger level.
(2) The two blocks in dashed lines cover the case where an additional byte is sent, as described in
Section 6.2.1
.
Fig 5.
RTS functional timing.
START
BYTE N
START
BYTE N + 1
START
STOP
STOP
RX
RTS
IOR
N
N+1
1
2
002aaa226
(1) When CTS is LOW, the transmitter keeps sending serial data out.
(2) When CTS goes HIGH before the middle of the last stop bit of the current byte, the transmitter finishes sending the current
byte, but is does not send the next byte.
(3) When CTS goes from HIGH to LOW, the transmitter begins sending data again.
Fig 6.
CTS functional timing.
START
BYTE 0-7
STOP
TX
CTS
002aaa227
START
BYTE 0-7
STOP
Table 3:
EFR[3]
0
1
0
1
Software flow control options (EFR[0:3])
EFR[2]
EFR[1]
EFR[0]
0
X
X
0
X
X
1
X
X
1
X
X
TX, RX software flow controls
no transmit flow control
transmit Xon1, Xoff1
transmit Xon2, Xoff2
transmit Xon1, Xon2, Xoff1, Xoff2
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| SC16C754IA68,512 | 功能描述:UART 接口集成電路 16C 2.5V-5V 4CH 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 |
| SC16C754IA68,518 | 功能描述:UART 接口集成電路 16C 2.5V-5V 4CH 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 |
| SC16C754IA68,529 | 功能描述:UART 接口集成電路 16C 2.5V-5V 4CH 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 |
| SC16C754IB80 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Quad UART with 64-byte FIFO |
| SC16C754IB80,528 | 功能描述:UART 接口集成電路 16C 2.5V-5V 4CH 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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