The TL16C752B is a dual universal asynchronous receiver/transmitter (UART) with 64-byte FIFOs, automatic hardware/software flow control, and data rates up to 3.125 Mbps. The TL16C752B offers enhanced features. It has a transmission control register (TCR) that stores received FIFO threshold level to start/stop transmission during hardware and sofware flow control. With the FIFO RDY register, the software gets the status of TXRDY/RXRDY for all four ports in one access.
Pin Compatible With ST16C2550 With Additional Enhancements
Up to 1.5 Mbps Baud Rate When Using Crystal (24 MHz Input Clock)
Up to 2.25 Mbps Baud Rate When Using Oscillator or Clock Source (36 MHz Input Clock)
64-Byte Transmit FIFO
64-Byte Receive FIFO With Error Flags
Programmable and Selectable Transmit and
Receive FIFO Trigger Levels for DMA and Interrupt Generation
Programmable Receive FIFO Trigger Levels for Software/Hardware Flow Control
Software/Hardware Flow Control
– Programmable Xon/Xoff Characters
– Programmable Auto-RTSand Auto-CTS
Optional Data Flow Resume by Xon Any Character
DMA Signalling Capability for Both Received and Transmitted Data
Supports 3.3-V Operation
Software Selectable Baud Rate Generator
Prescaler Provides Additional Divide By 4 Function
Fast Access Time 2 Clock Cycle IOR/IOW Pulse Width
Programmable Sleep Mode
Programmable Serial Interface Characteristics
– 5, 6, 7, or 8 Bit Characters
– Even, Odd, or No Parity Bit Generation and Detection
– 1, 1.5, or 2 Stop Bit Generation
False Start Bit Detection
Complete Status Reporting Capabilities in Both Normal and Sleep Mode
Line Break Generation and Detection
Internal Test and Loopback Capabilities
Fully Prioritized Interrupt System Controls
Modem Control Functions (CTS, RTS, DSR, DTR, RI, and CD)
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