SC16C554 - IC 4 CHANNEL(S), 5M bps, SERIAL COMM CONTROLLER, PQFP64, 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-314-2, LQFP-64, Serial IO/Communication Controller
The maximum clock frequency of the SC16C554BIB64,128 is 16 MHz, but it can also operate at lower frequencies down to 300 kHz.
To configure the UART for 9-bit data transmission, set the MCR[7] bit to '1' and the LCR[2] bit to '1'. This enables 9-bit data transmission with a 9th bit that can be used for parity or other purposes.
The XTAL1 and XTAL2 pins are used to connect an external crystal oscillator, which provides the clock signal for the UART. The XTAL1 pin is the input pin, and the XTAL2 pin is the output pin.
The UART can be reset by asserting the RESET pin low for at least 100 ns. This resets the UART to its default state and clears all registers.
The maximum baud rate that the SC16C554BIB64,128 can support is 1.5 Mbps.
SC16C554BIB64,128 datasheet
by NXP Semiconductors
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