M16C28 Datasheet, PDF(278/423 Page) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

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M16C28 Datasheet, PDF (278/423 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

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M16C/28 Group (M16C/28, M16C/28B)

16. MULTI-MASTER I2C bus INTERFACE

I2C0 Start/stop Condition Control Register

b7 b6 b5 b4 b3 b2 b1 b0

Symbol

S2D0

Address

02E516

After Reset

000110102

Bit Symbol

SSC0

SSC1

Bit Name

START/STOP Condition

Setting Bits(1)

SSC2

SSC3

SSC4

Function

RW

Setting for detection condition

of START/STOP condition.

RW

See Table 16.2.

RW

RW

RW

RW

SIP

SCL/SDA Interrupt Pin Polarity 0: Active in falling edge

RW

Select Bit

1: Active in rising edge

SIS

SCL/SDA Interrupt Pin Select

Bit

0: SDA enabled

1: SCL enabled

RW

STSP

SEL

START/STOP Condition

Generation Select Bit

0: Short setup/hold time mode

1: Long setup/hold time mode RW

NOTES:

1. Do not set "000002" or odd values.

Figure 16.8 S2D0 Register

Table 16.2 Recommended setting (SSC4-SSC0) start/stop condition at each oscillation frequency

Oscillation I2C bus system I2C bus system SSC4-SSC0(1) SCL release Setup time

Hold time

f1 (MHz)

10

8

8

4

clock select

1 / 2f1(2)

1 / 2f1(2)

1 / 8f1(2)

1 / 2f1(2)

clock(MHz)

5

4

1

2

XXX11110

XXX11010

XXX11000

XXX00100

XXX01100

time (cycle)

6.2 Âµs (31)

6.75 Âµs(27)

6.25 Âµs(25)

5.0 Âµs (5)

6.5 Âµs (13)

(cycle)

3.2 Âµs (16)

3.5 Âµs (14)

3.25 Âµs (13)

3.0 Âµs (3)

3.5 Âµs (7)

(cycle)

3.0 Âµs (15)

3.25 Âµs(13)

3.0 Âµs (12)

2.0 Âµs (2)

3.0 Âµs (6)

XXX01010

5.5 Âµs (11)

3.0 Âµs (6) 2.5 Âµs (5)

2

1 / 2f1(2)

1

XXX00100

5.0 Âµs (5)

3.0 Âµs (3) 2.0 Âµs (2)

NOTES:

1. Do not set odd values or â000002â to START/STOP condition setting bits(SSC4 to SSC0)

2. When the PCLK0 bit in the PCLKR register is set to "1".

Rev. 2.00 Jan. 31, 2007 page 258 of 385

REJ09B0047-0200

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