NS16C2552

PinoutSpecificationsUARTs2Max Speed (MBaud)5FIFO Buffer16 BytesTemperature Min-40 deg CTemperature Max85 deg CSupply Min2.97 VoltSupply Max5.5 VoltSpecial FeaturesPC26552D REG Set View Using CatalogDescriptionThe NS16C2552 and NS16C2752 are dual channel Universal Asynchronous Receiver/Transmitter ...

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SeekIC No. : 004435435 Detail

NS16C2552: PinoutSpecificationsUARTs2Max Speed (MBaud)5FIFO Buffer16 BytesTemperature Min-40 deg CTemperature Max85 deg CSupply Min2.97 VoltSupply Max5.5 VoltSpecial FeaturesPC26552D REG Set View Using Catalog...

floor Price/Ceiling Price

Part Number:
NS16C2552
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/21

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Product Details

Description



Pinout




Specifications

UARTs2
Max Speed (MBaud)5
FIFO Buffer16 Bytes
Temperature Min-40 deg C
Temperature Max85 deg C
Supply Min2.97 Volt
Supply Max5.5 Volt
Special FeaturesPC26552D REG Set
View Using Catalog



Description

The NS16C2552 and NS16C2752 are dual channel Universal Asynchronous Receiver/Transmitter (DUART). The footprint and the functions are compatible to the PC16552D, while new 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).

In the FIFO mode each channel is capable of buffering 16 bytes (for NS16C2552) or 64 bytes (for NS16C2752) of data in both the transmitter and receiver. 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. The configuration is through Alternate Function Register.

The fundamental function of the UART is converting between parallel and serial data. Serial-to-parallel conversion is done on the UART receiver and parallel-to-serial conversion is done on the transmitter. The CPU can read the complete status of each channel at any time. Status information reported includes the type and condition of the transfer operations being performed by the DUART, as well as any error conditions (parity, overrun, framing, or break interrupt).

The NS16C2552 and NS16C2752 include one programmable baud rate generator for each channel. Each baud rate generator is capable of dividing the clock input by divisors of 1 to (2 16 - 1), and producing a 16X clock for driving the internal transmitter logic and for receiver sampling circuitry. The NS16C2552 and NS16C2752 have complete MODEM-control capability, and a processor-interrupt system. The interrupts can be programmed by the user to minimize the processing required to handle the communications link.




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