IMP16C552-IJ68

IMP16C552 Data Communications Dual Universal Asynchronous Receiver/Transmitter (UART) . with 16-BYTE FIFO & Parallel Printer Port Key Features Two fully programmable serial 1/0 . 512K BAUD ) channels (DC TO Tri-state TTL drive capabilities for bi-directional data bus and control bus on each channel Loopback control for communications link fault isolation for each UART Line break generation and detection for each UART Complete status reporting capabilities Generation and stripping of serial asynchronous data control bits (start ,stop parity ) Programmable baud rate generator and modem control signals for each channel Fully prioritized independent interrupt system controls for each channel 16byte FIFO buffers on both transmit and receive of each channel to reduce number of interrupts presented to the CPU Programmable FIFO threshold loves of 1,4,8,or 14,bytes on each channel Two modes of DMA signaling available for transfer of data characters to and from FIFO buffers Fully bi-directional centronics compatible parallel port direct printer interface Advanced CMOS low power technology with single +5voit supply 68-pin PLCC package Pin Configuration 9 8 7 6 5 4 3 2 1 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 Rxrdy0* RISD1* VSS RI1* DSR1* CLK CSO) VSS LPTOE* ACK PE BUSY SLCT VCC ERROR* STS1 RXRdy1 1 408-432-9100/www.impweb.com VSS DSRO* RLSD0* RI0* DSR* CSO* A2 A1 AO IOW* IOR* CSO* RESET VCC SIN0 TXRDy1* VSS 27 28 29 30 31 32 33 34 35 36 37 38 ...