Features: · Pin to pin compatible to ST16C550, ST16C650A and TL16C750
· Transmit/receive FIFO counters
· 128 bytes of Transmit/Receive FIFO
· RS-485 half duplex direction control
· Automatic software/hardware flow control
· Programmable, selectable transmit/receive trigger levels
· Infrared transmitter and receiver encoder/decoder
· Up to 1.5Mbps data rate
· Sleep mode (100mA standby)
· Small 7x7mm TQFP
· +5 or 3.3 Volts operation
· Windows2 drivers availablePinout
SpecificationsSupply range.................. 7 Volts
Voltage at any pin ...... GND-0.3 V to VCC+0.3 V
Operating temperature ........ -40 to +85
Storage temperature ......... -65to +150
Package dissipation ............. 500 mW
| CH |
1 |
| CPUInterface |
Intel or PC COM Port |
| Data Rate@5/3.3/2.5V |
2.2/1.3/na |
| Tx/RxFIFO(Bytes) |
128/128 |
| Tx/RxFIFOCtrs |
Yes |
| Tx/RxFIFOINT Trig |
Program/ Program |
| AutoRTS/CTS |
Yes |
| IrDaSup |
Yes |
| 5VTolInputs |
Yes |
| Sup V |
2.97-5.5 |
| Pkgs |
PLCC-44, TQFP-48 |
DescriptionThe XR16C850 (850) is a universal asynchronous receiver and transmitter (UART) and is pin compatible with the ST16C650A UART. The 850 is an enhanced UART with 128 byte FIFOs, automatic hardware/soft- ware flow control, and data rates up to 1.5Mbps. It include transmit/receive FIFO counters to increase data loading and unloading from controlling CPU. Onboard status registers provide the user with error indications and operational status.
Modem interface control is included and can be optionally configured to operate with the Infrared (IrDA) encoder/decoder. The system interrupts may be tailored to meet user requirements. An internal loop-back capability allows onboard diagnostics.
The XR16C850 is available in 40 pin PDIP, 44 pin PLCC, 48 TQFP, and 52 pin QFP packages. The 40 pin package does not offer the PC mode. The 44, 48, and 52 pin versions provide both the standard (STD) mode or PC ISA bus (PC) mode. The STD mode is compatible with the ST16C450 and ST16C550 while the PC mode allows connection to the PC ISA bus.
For UART technical support or to obtain an IBIS model for this product, please email Exar's UART Technical Support group.
XR16C850 Data Sheet
