SC16C752B
5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.), with
64-byte FIFOs
Rev. 03 鈥?14 December 2004
Product data
1. Description
The SC16C752B is a dual universal asynchronous receiver/transmitter (UART) with
64-byte FIFOs, automatic hardware/software 铿俹w control, and data rates up to
5 Mbit/s (3.3 V and 5 V). The SC16C752B offers enhanced features. It has a
transmission control register (TCR) that stores receiver FIFO threshold levels to
start/stop transmission during hardware and software 铿俹w 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 over铿俹w, and parity errors. The transmitter can
detect FIFO under铿俹w. The UART also contains a software interface for modem
control operations, and has software 铿俹w control and hardware 铿俹w control
capabilities.
The SC16C752B is available in plastic LQFP48 and HVQFN32 packages.
2. Features
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Dual channel
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Pin compatible with SC16C2550 with additional enhancements
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Up to 5 Mbit/s baud rate (at 3.3 V and 5 V; at 2.5 V maximum baud rate is
3 Mbit/s)
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64-byte transmit FIFO
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64-byte receive FIFO with error 铿俛gs
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Programmable and selectable transmit and receive FIFO trigger levels for DMA
and interrupt generation
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Software/hardware 铿俹w control
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Programmable Xon/Xoff characters
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Programmable auto-RTS and auto-CTS
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Optional data 铿俹w resume by Xon any character
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DMA signalling capability for both received and transmitted data
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Supports 5 V, 3.3 V and 2.5 V operation
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5 V tolerant inputs