Features: · Compatible with 16550 and 16450 devices· Extended UART mode· Sharp-IR with selectable internal or external modulation· IrDA 1.0 SIR with up to 115.2 Kbaud data rate· IrDA 1.1 MIR and FIR with 0.576, 1.152 and 4.0 Mbps data rates· Consumer Electronics IR mode· UART mode data rates up to...
PC87109: Features: · Compatible with 16550 and 16450 devices· Extended UART mode· Sharp-IR with selectable internal or external modulation· IrDA 1.0 SIR with up to 115.2 Kbaud data rate· IrDA 1.1 MIR and FIR...
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Supply Voltage (VDD) . . . . . . . . . .-0.5V to + 7.0V
Input Voltage (VI) . . . . . . . . . -0.5 to VDD + 0.5V
Output Voltage (VO) . . . . . . . ..-0.5 to VDD + 0.5V
Storage Temperature (TSTG) . . -65ºC to + 165ºC
Power Dissipation (PD) . . . . . . . . . . . . . . .. . . .1W
Lead Temperature (TL)
(Soldering, 10 seconds) . . . . . . . . . . . . .. .+260ºC
ESD Tolerance (Note 2) . . . . . . . . . . . .1500V min.
CZAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100 pF
RZAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5 k•
Note 1: Absolute maximum ratings indicate limits beyond which permanent damage may occur. Continuous operation at these limits are not intended; operation should be limited to those conditions specified under electrical characteristics.
Note 2: Value based on test complying with NSC SOP5-028 human body model ESD testing using the ETS-910 tester.
Note 3: Unless otherwise specified all voltages are referenced to ground.
The PC87109 is a serial communication device with infrared capability. It supports 6 modes of operation and is backward compatible with the 16550 and 16450 (except for the MODEM control functions). The operational modes are: UART, Sharp-IR, IrDA 1.0 SIR, IrDA 1.1 MIR and FIR, and Consumer Electronics IR (also referred to as TV Remote or Consumer Remote Control).
In order to support existing legacy software based upon the 16550 UART, the PC87109 provides a special fallback mechanism that automatically switches the device to 16550 compatibility mode when the baud generator divisor is accessed through the legacy ports in bank 1.
PC87109 architecture has been optimized to meet the requirements of a variety of UART and infrared based applications. DMA support for all operational modes has been incorporated into the architecture.
PC87109 uses one DMA channel. One channel is required for infrared based applications since infrared communications work in half duplex fashion.
To further ease driver design of PC87109 and simplify the implementation of infrared protocols, a 12-bit timer with 125ms resolution has also been included.