R28 datasheet(329/473 Pages) RENESAS

Part #	R28

Description	RENESAS 16-BIT SINGLE-CHIP MCU R8C FAMILY / R8C/2x SERIES

PDF	473 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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329 / 473 page

R8C/28 Group, R8C/29 Group

16. Clock Synchronous Serial Interface

Rev.2.10

Sep 26, 2008

Page 310 of 441

REJ09B0279-0210

Figure 16.47

Example of Register Setting in Slave Transmit Mode (I2C bus Interface Mode)

End

Write transmit data to ICDRT register

Slave transmit mode

Yes

(1) Set the AAS bit to 0

(2) Set the transmit data (except the last byte)

(3) Wait until the ICRDT register is empty

(4) Set the transmit data of the last byte

(5) Wait until the last byte is transmitted

(6) Set the TEND bit to 0

(7) Set to slave receive mode

(8) Dummy read the ICDRR register to release the

SCL signal

(9) Set the TDRE bit to 0

TDRE = 1 ?

Read TDRE bit in ICSR register

Last byte ?

Write transmit data to ICDRT register

TEND = 1 ?

Read TEND bit in ICSR register

ICSR register

TEND bit

← 0

ICSR register

AAS bit

← 0

ICCR1 register

TRS bit

← 0

ICSR register

TDRE bit

← 0

Yes

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

Dummy read in ICDRR register

R28 Datasheet(PDF) 329 Page - Renesas Technology Corp

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