SC16IS752IBS,151 NXP Semiconductors, SC16IS752IBS,151 Datasheet - Page 15

• Manufacturer Part Number: SC16IS752IBS,151
• Description: IC UART DUAL I2C/SPI 32-HVQFN
• Manufacturer: NXP Semiconductors
• Type: IrDA or RS- 232 or RS- 485r

Specifications of SC16IS752IBS,151

• Number Of Channels: 2, DUART
• Package / Case: 32-VFQFN Exposed Pad
• Features: Low Current
• Fifo's: 64 Byte
• Protocol: RS232, RS485
• Voltage - Supply: 2.5V, 3.3V
• With Auto Flow Control: Yes
• With Irda Encoder/decoder: Yes
• With False Start Bit Detection: Yes
• With Modem Control: Yes
• Mounting Type: Surface Mount
• Data Rate: 5 Mbps
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.3 V
• Supply Current: 6 mA
• Maximum Operating Temperature: + 95 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 2.5 V or 3.3 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 568-4000 - DEMO BOARD SPI/I2C TO DUAL UART568-3510 - DEMO BOARD SPI/I2C TO UART
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-2236; 935279288151; SC16IS752IBS-S

NXP Semiconductors
SC16IS752_SC16IS762_7
Product data sheet
7.5.1 Interrupt mode operation
7.5.2 Polled mode operation
In Interrupt mode (if any bit of IER[3:0] is 1) the host is informed of the status of the
receiver and transmitter by an interrupt signal, IRQ. Therefore, it is not necessary to
continuously poll the Line Status Register (LSR) to see if any interrupt needs to be
serviced.
In Polled mode (IER[3:0] = 0000) the status of the receiver and transmitter can be
checked by polling the Line Status Register (LSR). This mode is an alternative to the FIFO
Interrupt mode of operation where the status of the receiver and transmitter is
automatically known by means of interrupts sent to the CPU.
mode operation.
Fig 8.
Fig 9.
Interrupt mode operation
FIFO Polled mode operation
Figure 8
HOST
HOST
shows Interrupt mode operation.
Dual UART with I
Rev. 07 — 19 May 2008
read LSR
read IIR
IRQ
2
SC16IS752/SC16IS762
C-bus/SPI interface, 64-byte FIFOs, IrDA SIR
THR
THR
LSR
IER
IER
IIR
Figure 9
1
0
1
0
RHR
RHR
1
002aab042
0
002aab043
shows FIFO Polled
1
0
© NXP B.V. 2008. All rights reserved.
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