SC16C550IN40 NXP Semiconductors, SC16C550IN40 Datasheet - Page 31

• Manufacturer Part Number: SC16C550IN40
• Manufacturer: NXP Semiconductors

Specifications of SC16C550IN40

• Transmit Fifo: 16Byte
• Receive Fifo: 16Byte
• Transmitter And Receiver Fifo Counter: Yes
• Package Type: PDIP
• Operating Supply Voltage (max): 5.5V
• Mounting: Through Hole
• Pin Count: 40
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Number Of Channels: 1
• Lead Free Status / RoHS Status: Compliant

Philips Semiconductors
9397 750 11619
Product data
Table 21:
Table 22:
[1]
Bit
5
4
3-0
Cont-3
0
1
0
1
X
X
X
1
0
1
When using a software flow control the Xon/Xoff characters cannot be used for data transfer.
Symbol
EFR[5]
EFR[4]
EFR[3-0] Cont-3-0 Tx, Rx control. Logic 0 or cleared is the default condition.
Cont-2
0
0
1
1
X
X
X
0
1
1
Enhanced Feature Register bits description
Software flow control functions
Description
Special Character Detect.
Enhanced function control bit. The content of IER[7-4], ISR[5-4], FCR[5-4],
and MCR[7-5] can be modified and latched. After modifying any bits in the
enhanced registers, EFR[4] can be set to a logic 0 to latch the new values.
This feature prevents existing software from altering or overwriting the
SC16C550 enhanced functions.
Combinations of software flow control can be selected by programming
these bits. See
Cont-1
X
X
X
X
0
1
0
1
1
1
Rev. 05 — 19 June 2003
Logic 0 = Special character detect disabled (normal default condition).
Logic 1 = Special character detect enabled. The SC16C550 compares
each incoming receive character with Xoff2 data. If a match exists, the
received data will be transferred to FIFO and ISR[4] will be set to
indicate detection of special character. Bit-0 in the X-registers
corresponds with the LSB bit for the receive character. When this feature
is enabled, the normal software flow control must be disabled (EFR[3-0]
must be set to a logic 0).
Logic 0 = Disable (normal default condition).
Logic 1 = Enable.
Cont-0
X
X
X
X
0
0
1
1
1
1
UART with 16-byte FIFO and IrDA encoder/decoder
Table
TX, RX software flow controls
No transmit flow control
Transmit Xon1/Xoff1
Transmit Xon2/Xoff2
Transmit Xon1 and Xon2/Xoff1 and Xoff2
No receive flow control
Receiver compares Xon1/Xoff1
Receiver compares Xon2/Xoff2
Transmit Xon1/Xoff1
Receiver compares Xon1 and Xon2, Xoff1 and Xoff2
Transmit Xon2/Xoff2
Receiver compares Xon1 and Xon2/Xoff1 and Xoff2
Transmit Xon1 and Xon2/Xoff1 and Xoff2
Receiver compares Xon1 and Xon2/Xoff1 and Xoff2
22.
[1]
…continued
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
SC16C550
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