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ST162552 bảng dữ liệu(PDF) 1 Page - Exar Corporation |
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ST162552 bảng dữ liệu(HTML) 1 Page - Exar Corporation |
1 / 28 page ST16C2552 PLCC Package DUAL ASYNCHRONOUS RECEIVER/TRANSMITTER WITH FIFOs DESCRIPTION The ST16C2552 is a dual asynchronous receiver and transmitter with 16 byte transmit and receive FIFOs. Independent programmable baud rate generators are provided to select transmit and receive clock rates from 50Hz to 1.5 MHz for each UART. The on board status registers of the ST16C2552 provide the error conditions, type and status of the transfer operation being performed. Complete MO- DEM control capability and a processor interrupt system that may be software tailored to the user’s requirements are included. The ST16C2552 provides internal loop-back capability for on board diagnostic testing. Signalling for DMA transfers is done through two pins per channel ( TXRDY*, RXRDY* ). The RXRDY* function is multiplexed on one pin with the OP2* and BAUDOUT functions. CPU can select these functions through the Alternate Function Register. The ST16C2552 is fabricated in an advanced 0.6 m CMOS process to achieve low power and high speed requirements. FEATURES · Pin to pin and functional compatible to National NS16C552 · 16 byte transmit FIFO · 16 byte receive FIFO with error flags · Modem control signals (CTS*, RTS*, DSR*, DTR*, RI*, CD*) · Programmable character lengths (5, 6, 7, 8) bits · Even, odd, or no parity bit generation and detection · Status report register · TTL compatible inputs, outputs · Independent transmit and receive control · Software compatible with INS8250, NS16C550 · 460.8 kHz transmit/receive operation with 7.372 MHz crystal or external clock source ORDERING INFORMATION Part number Package Operating temperature ST16C2552CJ44 PLCC 0° C to + 70° C ST16C2552IJ44 PLCC -40° C to + 85° C Printed December 17, 1996 7 8 9 10 11 12 13 14 15 16 17 39 38 37 36 35 34 33 32 31 30 29 D5 D6 D7 A0 XTAL1 GND XTAL2 A1 A2 CHSEL INTB RXA TXA DTRA* RTSA* MFA* INTA VCC TXRDYB* RIB* CDB* DSRB* ST16C2552CJ44 STARTECH An Company Rev. 2.0 3-135 1 2 3 4 5 6 7 8 9 10 11 12 36 35 34 33 32 31 30 29 28 27 26 25 ST16C2552CQ48 N.C. D5 D6 D7 A0 XTAL1 GND XTAL2 A1 A2 CHSEL INTB RXA TXA DTRA* RTSA* MFA* INTA VCC TXRDYB* RIB* CDB* DSRB* N.C. |
Số phần tương tự - ST162552 |
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Mô tả tương tự - ST162552 |
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