L9663 datasheet(82/104 Pages) STMICROELECTRONICS

номер детали	L9663

подробное описание детали	PSI5 Transceiver IC

PDF	104 Pages

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производитель	STMICROELECTRONICS [STMicroelectronics]

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82 / 104 page

Communication interface

L9663

82/104

DocID028693 Rev 1

MISO

This output signal is used to transfer data serially out of the device. Data is shifted out on the

falling edge of Serial Clock (SCLK). MISO is in high impedance under POR condition.

5.2.2

Clock and data characteristics

A microcontroller with its SPI peripheral running in the following mode can drive the SPI:

CPOL = '0' and CPHA = '1'.

The communication frame starts with the falling edge of the CS (Communication Start).

SCLK has to be low.

The MOSI data are then latched on all following falling SCLK edges into the internal shift

registers.

After Communication Start, the MISO will leave tri-state and shift the MSB of the output data

on MISO. On all following rising SCLK edges data are shifted out through the internal shift

registers to MISO.

The communication frame is finished with the rising edge of CS. If a valid communication

took place (e.g. correct number of SCLK cycles), the operation requested will be performed

(Write or Clear operation).

L9663 датащи(PDF) 82 Page - STMicroelectronics