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ST16C554DCQ64 Datasheet(PDF) 1 Page - Exar Corporation |
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ST16C554DCQ64 Datasheet(HTML) 1 Page - Exar Corporation |
1 / 40 page EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 • (510) 668-7000 • FAX (510) 668-7017 ST16C554/554D ST68C554 Rev. 3.10 PLCC Package QUAD UART WITH 16-BYTE FIFOS DESCRIPTION The ST16C554D is a universal asynchronous receiver and transmitter (UART) with a dual foot print interface. The 554D is an enhanced UART with 16 byte FIFOs, receive trigger levels and data rates up to 1.5Mbps. Onboard status registers provide the user with error indications and operational status, modem interface control. System interrupts may be tailored to meet user requirements. An internal loopback capability allows onboard diagnostics. The 554D is available in 64 pin TQFP, and 68 pin PLCC packages. The 68 pin PLCC package offer an additional 68 mode which allows easy integration with Motorola, and other popu- lar microprocessors. The ST16C554CQ64 (64 pin) offers three state interrupt control while the ST16C554DCQ64 provides constant active interrupt outputs. The 64 pin devices do not offer TXRDY/ RXRDY outputs. The 554D combines the package interface modes of the 16C554 and 68C554 series on a single integrated chip. FEATURES • Compatibility with the Industry Standard ST16C454, ST68C454, ST68C554, TL16C554 • 1.5 Mbps transmit/receive operation (24MHz) • 16 byte transmit FIFO • 16 byte receive FIFO with error flags • Independent transmit and receive control • Software selectable Baud Rate Generator • Four selectable Receive FIFO interrupt trigger levels • Standard modem interface ORDERING INFORMATION Part number Pins Package Operatingtemperature ST16C554DCJ68 68 PLCC 0° C to + 70° C ST16C554DCQ64 64 TQFP 0° C to + 70° C ST16C554CQ64 64 TQFP 0° C to + 70° C ST16C554DIJ68 68 PLCC -40° C to + 85° C ST16C554DIQ64 64 TQFP -40° C to + 85° C 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 -DSRA -CTSA -DTRA VCC -RTSA INTA -CSA TXA -IOW TXB -CSB INTB -RTSB GND -DTRB -CTSB -DSRB -DSRD -CTSD -DTRD GND -RTSD INTD -CSD TXD -IOR TXC -CSC INTC -RTSC VCC -DTRC -CTSC -DSRC ST16C554DCJ68 16 MODE |
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