SC16C550BIBS,157 NXP Semiconductors, SC16C550BIBS,157 Datasheet - Page 12

• Manufacturer Part Number: SC16C550BIBS,157
• Description: IC UART SOT617-1
• Manufacturer: NXP Semiconductors

Specifications of SC16C550BIBS,157

• Features: Programmable
• Number Of Channels: 1, UART
• Fifo's: 16 Byte
• Voltage - Supply: 2.5V, 3.3V, 5V
• With Auto Flow Control: Yes
• With False Start Bit Detection: Yes
• With Modem Control: Yes
• With Cmos: Yes
• Mounting Type: Surface Mount
• Package / Case: 32-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935279497157; SC16C550BIBS; SC16C550BIBS

NXP Semiconductors
SC16C550B_5
Product data sheet
Fig 7.
Fig 8.
CTS
RTS
IOR
TX
RX
(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 finishes sending the current byte, but
(3) When CTS goes from HIGH to LOW, the transmitter begins sending data again.
(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
it does not send the next byte.
CTS functional timing waveforms
RTS functional timing waveforms, RX FIFO trigger level = 1, 4, or 8 bytes
Start
6.3.3 Enabling autoflow control and auto-CTS
6.3.4 Auto-CTS and auto-RTS functional timing
Start
byte N
Autoflow control is enabled by setting MCR[5] and MCR[1].
Table 5.
The receiver FIFO trigger level can be set to 1, 4, 8, or 14 bytes. These are described in
Figure 8
bits 0 to 7
MCR[5]
1
1
0
Stop
and
Stop
Enabling autoflow control and auto-CTS
Figure
Start
1
MCR[1]
1
0
X
9.
Rev. 05 — 1 October 2008
Start
byte N + 1
2
bits 0 to 7
Stop
Stop
Selection
auto RTS and CTS
auto CTS
disable
5 V, 3.3 V and 2.5 V UART with 16-byte FIFOs
N
N + 1
Section
Start
SC16C550B
Start
6.3.1.
bits 0 to 7
© NXP B.V. 2008. All rights reserved.
byte
002aaa050
002aaa049
Stop
Stop
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