SC16C752BIB48,151 NXP Semiconductors, SC16C752BIB48,151 Datasheet - Page 28

• Manufacturer Part Number: SC16C752BIB48,151
• Description: IC DUAL UART 64BYTE 48LQFP
• Manufacturer: NXP Semiconductors

Specifications of SC16C752BIB48,151

• Number Of Channels: 2, DUART
• Package / Case: 48-LFQFP
• Fifo's: 64 Byte
• Voltage - Supply: 2.5V, 3.3V, 5V
• With Auto Flow Control: Yes
• With False Start Bit Detection: Yes
• With Modem Control: Yes
• Mounting Type: Surface Mount
• Voltage: 2.25 V ~ 5.5 V
• Data Rate: 5 Mbps
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.25 V
• Supply Current: 4.5 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 2.5 V or 3.3 V or 5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 935274411151; SC16C752BIB48-S; SC16C752BIB48-S

NXP Semiconductors
SC16C752B
Product data sheet
7.10 Enhanced Feature Register (EFR)
7.9 Interrupt Identification Register (IIR)
The IIR is a read-only 8-bit register which provides the source of the interrupt in a
prioritized manner.
Table 17.
The interrupt priority list is shown in
Table 18.
This 8-bit register enables or disables the enhanced features of the UART.
shows the Enhanced Feature Register bit settings.
Table 19.
Bit
7:6
5
4
3:1
0
Priority
level
1
2
2
3
4
5
6
Bit
7
6
Symbol
EFR[7]
EFR[6]
Symbol
IIR[7:6]
IIR[5]
IIR[4]
IIR[3:1]
IIR[0]
IIR[5]
0
0
0
0
0
0
1
Interrupt Identification Register bits description
Interrupt priority list
Enhanced Feature Register bits description
Description
CTS flow control enable.
RTS flow control enable.
All information provided in this document is subject to legal disclaimers.
Description
Mirror the contents of FCR[0]
RTSn/CTSn LOW-to-HIGH change of state
1 = Xoff/Special character has been detected
3-bit encoded interrupt. See
Interrupt status.
logic 0 = CTS flow control is disabled (normal default condition)
logic 1 = CTS flow control is enabled. Transmission will stop when a HIGH
signal is detected on the CTSn pin.
logic 0 = RTS flow control is disabled (normal default condition)
logic 1 = RTS flow control is enabled. The RTSn pin goes HIGH when the
receiver FIFO halt trigger level TCR[3:0] is reached, and goes LOW when the
receiver FIFO resume transmission trigger level TCR[7:4] is reached.
IIR[4]
0
0
0
0
0
1
0
5 V, 2.2 V and 2.5 V dual UART, 5 Mbit/s (max.), with 64-byte FIFOs
logic 0 = an interrupt is pending
logic 1 = no interrupt is pending
Table 17
Rev. 6 — 30 November 2010
IIR[3]
0
1
0
0
0
0
0
shows Interrupt Identification Register bit settings.
IIR[2]
1
1
1
0
0
0
0
Table
IIR[1]
1
0
0
1
0
0
0
18.
Table
18.
IIR[0]
0
0
0
0
0
0
0
Source of the interrupt
Receiver Line Status error
Receiver time-out interrupt
RHR interrupt
THR interrupt
Modem interrupt
Received Xoff signal/ special
character
CTSn, RTSn change of state from
active (LOW) to inactive (HIGH)
SC16C752B
© NXP B.V. 2010. All rights reserved.
Table 19
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