Datasheet

TMS320F28027, TMS320F28026, TMS320F28023, TMS320F28022

TMS320F28021, TMS320F28020, TMS320F280200

SPRS523J –NOVEMBER 2008–REVISED OCTOBER 2013

www.ti.com

3.2.20 Serial Port Peripherals

The devices support the following serial communication peripherals:

SPI: The SPI is a high-speed, synchronous serial I/O port that allows a serial bit stream

of programmed length (one to sixteen bits) to be shifted into and out of the device

at a programmable bit-transfer rate. Normally, the SPI is used for communications

between the MCU and external peripherals or another processor. Typical

applications include external I/O or peripheral expansion through devices such as

shift registers, display drivers, and ADCs. Multi-device communications are

supported by the master/slave operation of the SPI. The SPI contains a 4-level

receive and transmit FIFO for reducing interrupt servicing overhead.

SCI: The serial communications interface is a two-wire asynchronous serial port,

commonly known as UART. The SCI contains a 4-level receive and transmit FIFO

for reducing interrupt servicing overhead.

C: The inter-integrated circuit (I

C) module provides an interface between a MCU and

other devices compliant with Philips Semiconductors Inter-IC bus ( I

C-bus

)

specification version 2.1 and connected by way of an I

C-bus. External

components attached to this 2-wire serial bus can transmit/receive up to 8-bit data

to/from the MCU through the I

C module. The I

C contains a 4-level receive and

transmit FIFO for reducing interrupt servicing overhead.

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Product Folder Links: TMS320F28027 TMS320F28026 TMS320F28023 TMS320F28022 TMS320F28021

TMS320F28020 TMS320F280200