NS16C2552 Overview
Key Specifications
Package: TQFP
Mount Type: Surface Mount
Pins: 48
Operating Voltage: 5 V
Key Features
- are added to the UART device
- These features include low voltage support, 5V tolerant inputs, enhanced features, enhanced register set, and higher data rate
- The two serial channels are completely independent of each other, except for a common CPU interface and crystal input
- On power-up both channels are functionally identical to the PC16552D
- Each channel can operate with on-chip transmitter and receiver FIFO’s (in FIFO mode)
- The receiver FIFO also has additional 3 bits of error data per location
- All FIFO control logic is on-chip to minimize system software overhead and maximize system efficiency
- To improve the CPU processing bandwidth, the data transfers between the DUART and the CPU can be done using DMA controller
- Signaling for DMA transfers is done through two pins per channel (TXRDY and RXRDY)
- The RXRDY function is multiplexed on one pin with the OUT2 and BAUDOUT functions
