IMP16C552
IMP16C552 is Dual Universal Asynchronous Receiver/Transmitter (UART) with 16-BYTE FIFO & Parallel Printer Port manufactured by IMP Inc.
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 munications link fault isolation for each UART Line break generation and detection for each UART plete 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 patible 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
408-432-9100/.impweb.
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 39 40 41 42 43
SOUT1 DTR1- RTS1- DSR1- D0 D1 D2 D3 D4 D5 D6 D7 TXRdy0- VCC RTS0- DTR0- SOUT0
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
IMP 16C552
DSR- D INT2 SLIN- + INIT- + AFD- + STB- + VSS PD0 PD1 PD2 PD3 PD4 PD5 PD6 PD7 INT0 BDO
© 2002 IMP, Inc.
Description
The low power S IMP16C522 is a single device solution for serving two serial input/output ports simultaneously and one fully bi-directional parallel port for the IBM PC ATM PS/2 and patible systems. The parallel port is full patible to the Centronics printer port and IBM serial parallel Adapter. Each Universal Asynchronous Receiver and transmitter (UART) is fully...
