ST6369 datasheet(42/71 Pages) STMICROELECTRONICS

Numer części	ST6369

Szczegółowy opis	8-BIT HCMOS MCU FOR DIGITAL CONTROLLED MULTI FREQUENCYMONITOR

PDF	71 Pages

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Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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42 / 71 page

SERIAL PERIPHERAL INTERFACE (Continued)

Figure 47.Sofware Bus (Hardware Bus Disabled) Timing Diagram

STD SPI Protocol (Shift Register)

This protocol is similar to the I

2CBUS with the ex-

ception that there is no acknowledge pulse and

there are no stop or start bits. The clock cannot be

slowed down by the external peripherals.

In this case all three outputs should be high in or-

der not to lock the software I/Os from functioning.

SPI Standard Bus Protocol: The standard bus

protocol is selected by loading the SPI Control

must be set at one and bit 1 named STD mut be re-

set. When the standard bus protocol is selected bit

2 of the SCR1 is meaningless.

This bit named STOP bit is used only in I

2CBUS or

SBUS. However take care thet THE STOP BIT

MUST BE RESET WHEN THE STANDARD PRO-

TOCOL IS USED. This bit is set to ZERO after RE-

SET.

ST6369

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ST6369 Arkusz danych(PDF) 42 Page - STMicroelectronics