Features: Added features in top mark date code of "HC YYWW" and newer:
2.90 to 5.5 Volt Operation
5 Volt Tolerant Inputs
Automatic RS485 Half-Duplex Control Output
Programmable Infrared Encoder Pulse Width
Sleep Mode with Wake-up Indicator
Device ID & Revision
Up to 3.125 Mbps Data Rate at 5 Volts Added feature in top mark date code of "I2 YYWW "and newer:
0 ns address hold time
Intel or PC Mode 8-bit Bus Interface
32-byte Transmit and Receive FIFOs
Automatic Hardware (RTS/CTS) Flow Control
Hardware Flow Control Hysteresis
Automatic Software (Xon/Xoff) Flow Control
ApplicationBattery Operated Electronics
Handheld Terminal
Personal Digital Assistants
Cellular Phones DataPort
Wireless Infrared Data Communications SystemsPinout
Specifications
| CH |
1 |
| CPUInterface |
Intel or PC COM Port |
| Data Rate@5/3.3/2.5V |
3.1/2.0/na |
| Tx/RxFIFO(Bytes) |
32/32 |
| Tx/RxFIFOCtrs |
No |
| Tx/RxFIFOINT Trig |
4 Levels/ 4 Levels |
| AutoRTS/CTS |
Yes |
| IrDaSup |
Yes |
| 5VTolInputs |
Yes |
| Sup V |
2.97-5.5 |
| Pkgs |
PLCC-44, TQFP-48 |
DescriptionThe ST16C650A
1 is a universal asynchronous receiver and transmitter (UART) and is pin compatible with the ST16C550 UART. The 650A is an enhanced UART with 32 byte FIFO's, automatic hardware/software flow control, and data rates up to 1.5Mbps. 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 of the ST16C650A may be tailored to meet user requirements. An internal loop-back capability allows onboard diagnostics. The 650A is available in 40 pin PDIP, 44 pin PLCC, and 48 pin TQFP packages. The 40 pin package does not offer the PC mode. The 44 and 48 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.
NOTE: 1 Covered by US Patent #5,649,122.
For UART technical support or to obtain an IBIS model for this product, please email Exar's UART Technical Support group.
ST16C650A Data Sheet
