NXP Semiconductors SCN2651
The SCN2651 accepts programmed instructions from the microprocessor and supports many serial data communication disciplines, synchronous and asynchronous, in the full or half-duplex mode. The PCI serializes parallel data characters received from the microprocessor for transmission. The SCN2651 contains a baud rate generator which can be programmed to either accept an external clock or to generate internal transmit or receive clocks.DESCRIPTION
The Philips Semiconductors SCN2651 PCI is a universal synchronous/asynchronous data communications controller chip designed for microcomputer systems. It interfaces directly to the Philips Semiconductors SCN2650 microprocessor and may be used in a polled or interrupt driven system environment. Simultaneously, it can receive serial data and convert it into parallel data characters for input to the microcomputer. Sixteen different baud rates can be selected under program control when operating in the internal clock mode. The PCI is constructed using Philips Semiconductors n-channel silicon gate depletion load technology and is packaged in a 28-pin DIP. PIN CONFIGURATIONS D2 D3 RxD GND D4 D5 D6 D7 TxC A1 CE 1 2 3 4 5 6 7 DIP 8 9 10 11 28 D1 27 D0 26 VCC 25 RxC 24 DTR 23 RTS 22 DSR 21 RESET 20 BRCLK 19 TxD 18 TxEMT/DSCHG 17 CTS 16 DCD 15 TxRDY TOP VIEW A0 12 R/W 13 RxRDY 14FEATURES
● Synchronous operation – 5- to 8-bit characters – Single or double SYN operation – Internal cha...