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| 型号： | 935270057551 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 4 CHANNEL(S), 5M bps, SERIAL COMM CONTROLLER, PQFP80 |
| 封装： | 12 X 12 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-315-1, LQFP-80 |
| 文件页数： | 1/52页 |
| 文件大小： | 680K |
| 代理商： | 935270057551 |
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SC16C754
Quad UART with 64-byte FIFO
Rev. 02 — 14 March 2003
Product data
1.
Description
The SC16C754 is a quad universal asynchronous receiver/transmitter (UART) with
64-byte FIFOs, automatic hardware/software ow control, and data rates up to
5 Mbits/s (3.3 V and 5 V). The SC16C754 offers enhanced features. It has a
transmission control register (TCR) that stores receiver FIFO threshold levels to
start/stop transmission during hardware and software ow control. With the FIFO
RDY register, the software gets the status of TXRDY/RXRDY for all four ports in one
access. On-chip status registers provide the user with error indications, operational
status, and modem interface control. System interrupts may be tailored to meet user
requirements. An internal loop-back capability allows on-board diagnostics.
The UART transmits data, sent to it over the peripheral 8-bit bus, on the TX signal and
receives characters on the RX signal. Characters can be programmed to be 5, 6, 7, or
8 bits. The UART has a 64-byte receive FIFO and transmit FIFO and can be
programmed to interrupt at different trigger levels. The UART generates its own
desired baud rate based upon a programmable divisor and its input clock. It can
transmit even, odd, or no parity and 1, 1.5, or 2 stop bits. The receiver can detect
break, idle, or framing errors, FIFO overow, and parity errors. The transmitter can
detect FIFO underow. The UART also contains a software interface for modem
control operations, and has software ow control and hardware ow control
capabilities.
The SC16C754 is available in plastic LQFP80 and PLCC68 packages.
2.
Features
s Pin compatible with SC16C654IA68 and SC16C554IA68 with additional
enhancements
s Up to 5 Mbits/s baud rate (at 3.3 V and 5 V; at 2.5 V maximum baud rate is
3 Mbits/s)
s 64-byte transmit FIFO
s 64-byte receive FIFO with error ags
s Programmable and selectable transmit and receive FIFO trigger levels for DMA
and interrupt generation
s Software/hardware ow control
x Programmable Xon/Xoff characters
x Programmable auto-RTS and auto-CTS
s Optional data ow resume by Xon any character
s DMA signalling capability for both received and transmitted data
s Supports 5 V, 3.3 V and 2.5 V operation
s Software selectable baud rate generator
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