參數(shù)資料
型號: SC16C550BIB48,157
廠商: NXP Semiconductors
文件頁數(shù): 4/48頁
文件大小: 0K
描述: IC UART SINGLE W/FIFO 48-LQFP
標準包裝: 1,250
特點: 可編程
通道數(shù): 1,UART
FIFO's: 16 字節(jié)
電源電壓: 2.5V,3.3V,5V
帶自動流量控制功能:
帶故障啟動位檢測功能:
帶調制解調器控制功能:
帶CMOS:
安裝類型: 表面貼裝
封裝/外殼: 48-LQFP
供應商設備封裝: 48-LQFP(7x7)
包裝: 管件
其它名稱: 935274388157
SC16C550BIB48
SC16C550BIB48-ND
SC16C550B_5
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 05 — 1 October 2008
12 of 48
NXP Semiconductors
SC16C550B
5 V, 3.3 V and 2.5 V UART with 16-byte FIFOs
6.3.3 Enabling autoow control and auto-CTS
Autoow control is enabled by setting MCR[5] and MCR[1].
6.3.4 Auto-CTS and auto-RTS functional timing
The receiver FIFO trigger level can be set to 1, 4, 8, or 14 bytes. These are described in
Table 5.
Enabling autoow control and auto-CTS
MCR[5]
MCR[1]
Selection
1
auto RTS and CTS
1
0
auto CTS
0
X
disable
(1) When CTS is LOW, the transmitter keeps sending serial data out.
(2) If CTS goes HIGH before the middle of the last stop bit of the current byte, the transmitter nishes sending the current byte, but
it does not send the next byte.
(3) When CTS goes from HIGH to LOW, the transmitter begins sending data again.
Fig 7.
CTS functional timing waveforms
Start
bits 0 to 7
Stop
TX
CTS
002aaa049
Start
bits 0 to 7
Stop
Start
bits 0 to 7
Stop
(1) N = RX FIFO trigger level (1, 4, or 8 bytes).
(2) The two blocks in dashed lines cover the case where an additional byte is sent as described in Section 6.3.1.
Fig 8.
RTS functional timing waveforms, RX FIFO trigger level = 1, 4, or 8 bytes
Start
byte N
Start
byte N + 1
Start
byte
Stop
RX
RTS
IOR
N
N + 1
12
002aaa050
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