3886 datasheet(215/380 Pages) RENESAS

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3886 Datasheet(PDF) 215 Page - Renesas Technology Corp

Part #	3886

Description	8-BIT SINGLE-CHIP MICROCOMPUTER

PDF	380 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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215 / 380 page

2-98

3886 Group User’s Manual

APPLICATION

2.5 Multi-master I2C-BUS interface

➁ Reception of command

Confirm correct completion of the command reception in the interrupt after receiving the command.

After confirming correct command from the host, write dummy data to the I2C data shift register

to wait for reception of the next slave address.

Fig. 2.5.27 Reception process of command

End

S0(address 1216)

← 111111112

Error end

Receive data buffer

← S0(address 1216)

S2(address 1616)

← 100001012

Judgment of receive command

PIN (address 1416), bit 4 ?

1(stop condition)

0(command received)

S1(address 1416)

← 000100002

• Judgment of bus hold

• “ACK clock is used” select and “ACK is returned” set

• Slave receive mode set

• Dummy data write to I2C data shift register

• Receive data read and save

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